Support Ubuntu 22.04 (#411)

* Fix toolchain url

* Add 22.04 os script

* Update centos-9 stream

* Update zlib

* Upgrade dotnet version

* Add libipt

* Update toolchain extension

* Add release container

* Remove CentOS 8

* Enable arm packaging

* Add centos 9 container

* Ignore missing python virtualenv

* Add virtualenvwrapper

* Rearrange order

* Install virtualenv without user

* Run virtualenv via python

* Add logrotate dependency

* Bump up checkout action version

.clang-tidy

@@ -6,7 +6,6 @@ Checks: '*,
          -altera-unroll-loops,
          -android-*,
          -cert-err58-cpp,
-         -cert-str34-c,
          -cppcoreguidelines-avoid-c-arrays,
          -cppcoreguidelines-avoid-goto,
          -cppcoreguidelines-avoid-magic-numbers,
@@ -50,7 +49,6 @@ Checks: '*,
          -misc-non-private-member-variables-in-classes,
          -modernize-avoid-c-arrays,
          -modernize-concat-nested-namespaces,
-         -modernize-loop-convert,
          -modernize-pass-by-value,
          -modernize-use-equals-default,
          -modernize-use-nodiscard,
@@ -63,9 +61,7 @@ Checks: '*,
          -readability-magic-numbers,
          -readability-named-parameter,
          -misc-no-recursion,
-         -concurrency-mt-unsafe,
-         -bugprone-easily-swappable-parameters'
-
+         -concurrency-mt-unsafe'
 WarningsAsErrors: ''
 HeaderFilterRegex: 'src/.*'
 AnalyzeTemporaryDtors: false

.github/pull_request_template.md

@@ -3,9 +3,7 @@
 - [ ] Update [changelog](https://docs.memgraph.com/memgraph/changelog)
 - [ ] Write E2E tests
 - [ ] Compare the [benchmarking results](https://bench-graph.memgraph.com/) between the master branch and the Epic branch
-- [ ] Provide the full content or a guide for the final git message
 
 [master < Task] PR
 - [ ] Check, and update documentation if necessary
 - [ ] Update [changelog](https://docs.memgraph.com/memgraph/changelog)
-- [ ] Provide the full content or a guide for the final git message

.github/workflows/diff.yaml

@@ -1,7 +1,4 @@
 name: Diff
-concurrency:
-  group: ${{ github.head_ref || github.sha }}
-  cancel-in-progress: true
 
 on:
   push:
@@ -70,11 +67,6 @@ jobs:
           # branches and tags. (default: 1)
           fetch-depth: 0
 
-        # This is also needed if we want do to comparison against other branches
-        # See https://github.community/t/checkout-code-fails-when-it-runs-lerna-run-test-since-master/17920
-      - name: Fetch all history for all tags and branches
-        run: git fetch
-
       - name: Build combined ASAN, UBSAN and coverage binaries
         run: |
           # Activate toolchain.
@@ -115,22 +107,12 @@ jobs:
           name: "Code coverage"
           path: tools/github/generated/code_coverage.tar.gz
 
-      - name: Set base branch
-        if: ${{ github.event_name == 'pull_request' }}
-        run: |
-          echo "BASE_BRANCH=origin/${{ github.base_ref }}" >> $GITHUB_ENV
-
-      - name: Set base branch # if we manually dispatch or push to master
-        if: ${{ github.event_name != 'pull_request' }}
-        run: |
-          echo "BASE_BRANCH=origin/master" >> $GITHUB_ENV
-
       - name: Run clang-tidy
         run: |
           source /opt/toolchain-v4/activate
 
           # Restrict clang-tidy results only to the modified parts
-          git diff -U0 ${{ env.BASE_BRANCH }}... -- src | ./tools/github/clang-tidy/clang-tidy-diff.py -p 1 -j $THREADS -extra-arg="-DMG_CLANG_TIDY_CHECK" -path build | tee ./build/clang_tidy_output.txt
+          git diff -U0 master... -- src | ./tools/github/clang-tidy/clang-tidy-diff.py -p 1 -j $THREADS -path build | tee ./build/clang_tidy_output.txt
 
           # Fail if any warning is reported
           ! cat ./build/clang_tidy_output.txt | ./tools/github/clang-tidy/grep_error_lines.sh > /dev/null
@@ -171,7 +153,7 @@ jobs:
 
           # Run leftover CTest tests (all except unit and benchmark tests).
           cd build
-          ctest -E "(memgraph__unit|memgraph__benchmark|memgraph__simulation)" --output-on-failure
+          ctest -E "(memgraph__unit|memgraph__benchmark)" --output-on-failure
 
       - name: Run drivers tests
         run: |
@@ -262,15 +244,6 @@ jobs:
           cd build
           ctest -R memgraph__unit --output-on-failure -j$THREADS
 
-      - name: Run simulation tests
-        run: |
-          # Activate toolchain.
-          source /opt/toolchain-v4/activate
-
-          # Run unit tests.
-          cd build
-          ctest -R memgraph__simulation --output-on-failure -j$THREADS
-
       - name: Run e2e tests
         run: |
           # TODO(gitbuda): Setup mgclient and pymgclient properly.

.github/workflows/full_clang_tidy.yaml

@@ -39,7 +39,7 @@ jobs:
           source /opt/toolchain-v4/activate
 
           # The results are also written to standard output in order to retain them in the logs
-          ./tools/github/clang-tidy/run-clang-tidy.py -p build -j $THREADS -extra-arg="-DMG_CLANG_TIDY_CHECK" -clang-tidy-binary=/opt/toolchain-v4/bin/clang-tidy "$PWD/src/*" |
+          ./tools/github/clang-tidy/run-clang-tidy.py -p build -j $THREADS -clang-tidy-binary=/opt/toolchain-v4/bin/clang-tidy "$PWD/src/*" |
             tee ./build/full_clang_tidy_output.txt
 
       - name: Summarize clang-tidy results

.github/workflows/package_all.yaml

@@ -174,5 +174,5 @@ jobs:
       - name: "Upload package"
         uses: actions/upload-artifact@v2
         with:
-          name: debian-11-arm
-          path: build/output/debian-11-arm/memgraph*.deb
+          name: debian-11
+          path: build/output/debian-11/memgraph*.deb

.github/workflows/release_docker.yaml

@@ -4,12 +4,8 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: "Memgraph binary version to publish on DockerHub."
+        description: "Memgraph binary version to publish on Dockerhub."
         required: true
-      force_release:
-        type: boolean
-        required: false
-        default: false
 
 jobs:
   docker_publish:
@@ -40,22 +36,6 @@ jobs:
           curl -L https://download.memgraph.com/memgraph/v${{ github.event.inputs.version }}/debian-11/memgraph_${{ github.event.inputs.version }}-1_amd64.deb > memgraph-amd64.deb
           curl -L https://download.memgraph.com/memgraph/v${{ github.event.inputs.version }}/debian-11-aarch64/memgraph_${{ github.event.inputs.version }}-1_arm64.deb > memgraph-arm64.deb
 
-      - name: Check if specified version is already pushed
-        run: |
-          EXISTS=$(docker manifest inspect $DOCKER_ORGANIZATION_NAME/$DOCKER_REPOSITORY_NAME:${{ github.event.inputs.version }} > /dev/null; echo $?)
-          echo $EXISTS
-          if [[ ${EXISTS} -eq 0 ]]; then
-              echo 'The specified version has been already released to DockerHub.'
-              if [[ ${{ github.event.inputs.force_release }} = true ]]; then
-                echo 'Forcing the release!'
-              else
-                echo 'Stopping the release!'
-                exit 1
-              fi
-          else
-              echo 'All good the specified version has not been release to DockerHub.'
-          fi
-
       - name: Build & push docker images
         run: |
           cd release/docker

.gitignore

@@ -23,8 +23,6 @@ cmake-build-*
 cmake/DownloadProject/
 dist/
 src/query/frontend/opencypher/generated/
-src/query/v2/frontend/opencypher/generated/
-src/parser/opencypher/generated
 tags
 ve/
 ve3/
@@ -52,25 +50,15 @@ src/distributed/pull_produce_rpc_messages.hpp
 src/distributed/storage_gc_rpc_messages.hpp
 src/distributed/token_sharing_rpc_messages.hpp
 src/distributed/updates_rpc_messages.hpp
-src/query/v2/frontend/ast/ast.hpp
 src/query/frontend/ast/ast.hpp
-src/storage/v3/bindings/ast/ast.hpp
 src/query/distributed/frontend/ast/ast_serialization.hpp
-src/query/v2/distributed/frontend/ast/ast_serialization.hpp
 src/durability/distributed/state_delta.hpp
 src/durability/single_node/state_delta.hpp
 src/durability/single_node_ha/state_delta.hpp
 src/query/frontend/semantic/symbol.hpp
-src/query/v2/frontend/semantic/symbol.hpp
-src/expr/semantic/symbol.hpp
 src/query/distributed/frontend/semantic/symbol_serialization.hpp
-src/query/v2/distributed/frontend/semantic/symbol_serialization.hpp
 src/query/distributed/plan/ops.hpp
-src/query/v2/distributed/plan/ops.hpp
 src/query/plan/operator.hpp
-src/query/v2/plan/operator.hpp
-src/parser/opencypher/generated
-src/expr/semantic/symbol.hpp
 src/raft/log_entry.hpp
 src/raft/raft_rpc_messages.hpp
 src/raft/snapshot_metadata.hpp

CMakeLists.txt

@@ -54,7 +54,7 @@ option(MG_ENTERPRISE "Build Memgraph Enterprise Edition" ON)
 # Set the current version here to override the automatic version detection. The
 # version must be specified as `X.Y.Z`. Primarily used when building new patch
 # versions.
-set(MEMGRAPH_OVERRIDE_VERSION "")
+set(MEMGRAPH_OVERRIDE_VERSION "2.3.1")
 
 # Custom suffix that this version should have. The suffix can be any arbitrary
 # string. Primarily used when building a version for a specific customer.

CODEOWNERS

@@ -0,0 +1 @@
+* @antaljanosbenjamin @kostasrim

environment/os/centos-7.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "centos-7"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc gcc-c++ make # generic build tools
     wget # used for archive download

environment/os/centos-9.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "centos-9"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils-common gcc gcc-c++ make # generic build tools
     wget # used for archive download

environment/os/debian-10.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "debian-10"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # used for archive download

environment/os/debian-11-arm.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "debian-11"
-check_architecture "arm64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # used for archive download

environment/os/debian-11.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "debian-11"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # used for archive download

environment/os/template.sh

@@ -5,8 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "todo-os-name"
-
 TOOLCHAIN_BUILD_DEPS=(
     pkg
 )

environment/os/ubuntu-18.04.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "ubuntu-18.04"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # archive download

environment/os/ubuntu-20.04.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "ubuntu-20.04"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # used for archive download

environment/os/ubuntu-22.04.sh

@@ -5,9 +5,6 @@ set -Eeuo pipefail
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 source "$DIR/../util.sh"
 
-check_operating_system "ubuntu-22.04"
-check_architecture "x86_64"
-
 TOOLCHAIN_BUILD_DEPS=(
     coreutils gcc g++ build-essential make # generic build tools
     wget # used for archive download

environment/util.sh

@@ -5,28 +5,10 @@ operating_system() {
     sort | cut -d '=' -f 2- | sed 's/"//g' | paste -s -d '-'
 }
 
-check_operating_system() {
-    if [ "$(operating_system)" != "$1" ]; then
-        echo "Not the right operating system!"
-        exit 1
-    else
-        echo "The right operating system."
-    fi
-}
-
 architecture() {
     uname -m
 }
 
-check_architecture() {
-    if [ "$(architecture)" != "$1" ]; then
-        echo "Not the right architecture!"
-        exit 1
-    else
-        echo "The right architecture."
-    fi
-}
-
 check_all_yum() {
     local missing=""
     for pkg in $1; do

init

@@ -139,6 +139,3 @@ done;
 # Install precommit hook
 python3 -m pip install pre-commit
 python3 -m pre_commit install
-
-# Link `include/mgp.py` with `release/mgp/mgp.py`
-ln -v -f include/mgp.py release/mgp/mgp.py

libs/.gitignore

@@ -5,4 +5,3 @@
 !CMakeLists.txt
 !__main.cpp
 !pulsar.patch
-!antlr4.10.1.patch

libs/CMakeLists.txt

@@ -106,7 +106,6 @@ import_external_library(antlr4 STATIC
              -DWITH_LIBCXX=OFF # because of debian bug
              -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=true
              -DCMAKE_CXX_STANDARD=20
-             -DANTLR_BUILD_CPP_TESTS=OFF
   BUILD_COMMAND $(MAKE) antlr4_static
   INSTALL_COMMAND $(MAKE) install)
 

libs/antlr4.10.1.patch

@@ -1,13 +0,0 @@
-diff --git a/runtime/Cpp/runtime/CMakeLists.txt b/runtime/Cpp/runtime/CMakeLists.txt
-index baf46cac9..2e7756de8 100644
---- a/runtime/Cpp/runtime/CMakeLists.txt
-+++ b/runtime/Cpp/runtime/CMakeLists.txt
-@@ -134,7 +134,7 @@ set_target_properties(antlr4_static
-                                  ARCHIVE_OUTPUT_DIRECTORY ${LIB_OUTPUT_DIR}
-                                  COMPILE_FLAGS "${disabled_compile_warnings} ${extra_static_compile_flags}")
-
--install(TARGETS antlr4_shared
-+install(TARGETS antlr4_shared OPTIONAL
-         EXPORT antlr4-targets
-         ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-         LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}

libs/antlr4.patch

@@ -0,0 +1,43 @@
+diff --git a/runtime/Cpp/runtime/CMakeLists.txt b/runtime/Cpp/runtime/CMakeLists.txt
+index a8503bb..11362cf 100644
+--- a/runtime/Cpp/runtime/CMakeLists.txt
++++ b/runtime/Cpp/runtime/CMakeLists.txt
+@@ -5,8 +5,8 @@ set(THIRDPARTY_DIR ${CMAKE_BINARY_DIR}/runtime/thirdparty)
+ set(UTFCPP_DIR ${THIRDPARTY_DIR}/utfcpp)
+ ExternalProject_Add(
+   utfcpp
+-  GIT_REPOSITORY        "git://github.com/nemtrif/utfcpp"
+-  GIT_TAG               "v3.1.1"
++  GIT_REPOSITORY        "https://github.com/nemtrif/utfcpp"
++  GIT_TAG               "v3.2.1"
+   SOURCE_DIR            ${UTFCPP_DIR}
+   UPDATE_DISCONNECTED   1
+   CMAKE_ARGS            -DCMAKE_INSTALL_PREFIX=${UTFCPP_DIR}/install -Dgtest_force_shared_crt=ON
+@@ -118,7 +118,7 @@ set_target_properties(antlr4_static
+                                  ARCHIVE_OUTPUT_DIRECTORY ${LIB_OUTPUT_DIR}
+                                  COMPILE_FLAGS "${disabled_compile_warnings} ${extra_static_compile_flags}")
+ 
+-install(TARGETS antlr4_shared
++install(TARGETS antlr4_shared OPTIONAL
+         DESTINATION lib
+         EXPORT antlr4-targets)
+ install(TARGETS antlr4_static
+diff --git a/runtime/Cpp/runtime/src/support/Any.h b/runtime/Cpp/runtime/src/support/Any.h
+index 468db98..65a473b 100644
+--- a/runtime/Cpp/runtime/src/support/Any.h
++++ b/runtime/Cpp/runtime/src/support/Any.h
+@@ -122,12 +122,12 @@ private:
+     }
+ 
+   private:
+-    template<int N = 0, typename std::enable_if<N == N && std::is_nothrow_copy_constructible<T>::value, int>::type = 0>
++    template<int N = 0, typename std::enable_if<N == N && std::is_copy_constructible<T>::value, int>::type = 0>
+     Base* clone() const {
+       return new Derived<T>(value);
+     }
+ 
+-    template<int N = 0, typename std::enable_if<N == N && !std::is_nothrow_copy_constructible<T>::value, int>::type = 0>
++    template<int N = 0, typename std::enable_if<N == N && !std::is_copy_constructible<T>::value, int>::type = 0>
+     Base* clone() const {
+       return nullptr;
+     }

libs/setup.sh

@@ -105,7 +105,7 @@ repo_clone_try_double () {
 # Download from primary_urls might fail because the cache is not installed.
 declare -A primary_urls=(
   ["antlr4-code"]="http://$local_cache_host/git/antlr4.git"
-  ["antlr4-generator"]="http://$local_cache_host/file/antlr-4.10.1-complete.jar"
+  ["antlr4-generator"]="http://$local_cache_host/file/antlr-4.9.2-complete.jar"
   ["cppitertools"]="http://$local_cache_host/git/cppitertools.git"
   ["rapidcheck"]="http://$local_cache_host/git/rapidcheck.git"
   ["gbenchmark"]="http://$local_cache_host/git/benchmark.git"
@@ -130,7 +130,7 @@ declare -A primary_urls=(
 # should fail.
 declare -A secondary_urls=(
   ["antlr4-code"]="https://github.com/antlr/antlr4.git"
-  ["antlr4-generator"]="https://www.antlr.org/download/antlr-4.10.1-complete.jar"
+  ["antlr4-generator"]="http://www.antlr.org/download/antlr-4.9.2-complete.jar"
   ["cppitertools"]="https://github.com/ryanhaining/cppitertools.git"
   ["rapidcheck"]="https://github.com/emil-e/rapidcheck.git"
   ["gbenchmark"]="https://github.com/google/benchmark.git"
@@ -152,10 +152,10 @@ declare -A secondary_urls=(
 # antlr
 file_get_try_double "${primary_urls[antlr4-generator]}" "${secondary_urls[antlr4-generator]}"
 
-antlr4_tag="4.10.1" # v4.10.1
+antlr4_tag="4.9.2" # v4.9.2
 repo_clone_try_double "${primary_urls[antlr4-code]}" "${secondary_urls[antlr4-code]}" "antlr4" "$antlr4_tag" true
 pushd antlr4
-git apply ../antlr4.10.1.patch
+git apply ../antlr4.patch
 popd
 
 # cppitertools v2.0 2019-12-23
@@ -199,7 +199,7 @@ git apply ../rocksdb.patch
 popd
 
 # mgclient
-mgclient_tag="v1.4.0" # (2022-06-14)
+mgclient_tag="96e95c6845463cbe88948392be58d26da0d5ffd3" # (2022-02-08)
 repo_clone_try_double "${primary_urls[mgclient]}" "${secondary_urls[mgclient]}" "mgclient" "$mgclient_tag"
 sed -i 's/\${CMAKE_INSTALL_LIBDIR}/lib/' mgclient/src/CMakeLists.txt
 

licenses/BSL.txt

@@ -36,7 +36,7 @@ ADDITIONAL USE GRANT:   You may use the Licensed Work in accordance with the
                         3. using the Licensed Work to create a work or solution
                         which competes (or might reasonably be expected to
                         compete) with the Licensed Work.
-CHANGE DATE:            2026-27-04
+CHANGE DATE:            2026-16-06
 CHANGE LICENSE:         Apache License, Version 2.0
 
 For information about alternative licensing arrangements, please visit: https://memgraph.com/legal.

release/mgp/.gitignore

@@ -1,3 +0,0 @@
-.venv
-dist
-mgp.py

release/mgp/LICENSE

@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
-      exercising permissions granted by this License.
-
-      "Source" form shall mean the preferred form for making modifications,
-      including but not limited to software source code, documentation
-      source, and configuration files.
-
-      "Object" form shall mean any form resulting from mechanical
-      transformation or translation of a Source form, including but
-      not limited to compiled object code, generated documentation,
-      and conversions to other media types.
-
-      "Work" shall mean the work of authorship, whether in Source or
-      Object form, made available under the License, as indicated by a
-      copyright notice that is included in or attached to the work
-      (an example is provided in the Appendix below).
-
-      "Derivative Works" shall mean any work, whether in Source or Object
-      form, that is based on (or derived from) the Work and for which the
-      editorial revisions, annotations, elaborations, or other modifications
-      represent, as a whole, an original work of authorship. For the purposes
-      of this License, Derivative Works shall not include works that remain
-      separable from, or merely link (or bind by name) to the interfaces of,
-      the Work and Derivative Works thereof.
-
-      "Contribution" shall mean any work of authorship, including
-      the original version of the Work and any modifications or additions
-      to that Work or Derivative Works thereof, that is intentionally
-      submitted to Licensor for inclusion in the Work by the copyright owner
-      or by an individual or Legal Entity authorized to submit on behalf of
-      the copyright owner. For the purposes of this definition, "submitted"
-      means any form of electronic, verbal, or written communication sent
-      to the Licensor or its representatives, including but not limited to
-      communication on electronic mailing lists, source code control systems,
-      and issue tracking systems that are managed by, or on behalf of, the
-      Licensor for the purpose of discussing and improving the Work, but
-      excluding communication that is conspicuously marked or otherwise
-      designated in writing by the copyright owner as "Not a Contribution."
-
-      "Contributor" shall mean Licensor and any individual or Legal Entity
-      on behalf of whom a Contribution has been received by Licensor and
-      subsequently incorporated within the Work.
-
-   2. Grant of Copyright License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      copyright license to reproduce, prepare Derivative Works of,
-      publicly display, publicly perform, sublicense, and distribute the
-      Work and such Derivative Works in Source or Object form.
-
-   3. Grant of Patent License. Subject to the terms and conditions of
-      this License, each Contributor hereby grants to You a perpetual,
-      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
-      (except as stated in this section) patent license to make, have made,
-      use, offer to sell, sell, import, and otherwise transfer the Work,
-      where such license applies only to those patent claims licensable
-      by such Contributor that are necessarily infringed by their
-      Contribution(s) alone or by combination of their Contribution(s)
-      with the Work to which such Contribution(s) was submitted. If You
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-      file or class name and description of purpose be included on the
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release/mgp/README.md

@@ -1,4 +0,0 @@
-# mgp
-
-PyPi package used for type hinting when creating MAGE modules. The get started
-using MAGE repository checkout the repository here: https://github.com/memgraph/mage.

release/mgp/_mgp.py

@@ -1,255 +0,0 @@
-from typing import Any
-
-
-class MgpIterable:
-    def get() -> Any:
-        pass
-
-    def next() -> Any:
-        pass
-
-
-class Vertex:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-    def underlying_graph_is_mutable() -> bool:  # type: ignore
-        pass
-
-    def iter_properties() -> MgpIterable:  # type: ignore
-        pass
-
-    def get_property(self, property_name: str) -> "Property":  # type: ignore
-        pass
-
-    def set_property(self, property_name: str, value: Any) -> "Property":  # type: ignore
-        pass
-
-    def get_id() -> "VertexId":  # type: ignore
-        pass
-
-    def label_at(self, index: int) -> "Label":  # type: ignore
-        pass
-
-    def labels_count() -> int:  # type: ignore
-        pass
-
-    def add_label(self, label: Any):
-        pass
-
-    def remove_label(self, label: Any):
-        pass
-
-    def iter_in_edges() -> MgpIterable:  # type: ignore
-        pass
-
-    def iter_out_edges() -> MgpIterable:  # type: ignore
-        pass
-
-
-class Edge:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-    def underlying_graph_is_mutable() -> bool:  # type: ignore
-        pass
-
-    def iter_properties() -> MgpIterable:  # type: ignore
-        pass
-
-    def get_property(self, property_name: str) -> "Property":  # type: ignore
-        pass
-
-    def set_property(self, property_name: str, valuse: Any) -> "Property":  # type: ignore
-        pass
-
-    def get_type_name() -> str:  # type: ignore
-        pass
-
-    def get_id() -> "EdgeId":  # type: ignore
-        pass
-
-    def from_vertex() -> Vertex:  # type: ignore
-        pass
-
-    def to_vertex() -> Vertex:  # type: ignore
-        pass
-
-
-class Path:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-    @staticmethod
-    def make_with_start(vertex: Vertex) -> "Path":  # type: ignore
-        pass
-
-
-class Graph:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-
-class CypherType:
-    pass
-
-
-class Message:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-    def source_type() -> str:  # type: ignore
-        pass
-
-    def topic_name() -> str:  # type: ignore
-        pass
-
-    def key() -> bytes:  # type: ignore
-        pass
-
-    def timestamp() -> int:  # type: ignore
-        pass
-
-    def offset() -> int:  # type: ignore
-        pass
-
-    def payload() -> bytes:  # type: ignore
-        pass
-
-
-class Messages:
-    def is_valid() -> bool:  # type: ignore
-        pass
-
-    def message_at(self, id: int) -> Message:  # type: ignore
-        pass
-
-    def total_messages() -> int:  # type: ignore
-        pass
-
-
-class UnknownError(Exception):
-    pass
-
-
-class UnableToAllocateError(Exception):
-    pass
-
-
-class InsufficientBufferError(Exception):
-    pass
-
-
-class OutOfRangeError(Exception):
-    pass
-
-
-class LogicErrorError(Exception):
-
-    pass
-
-
-class DeletedObjectError(Exception):
-    pass
-
-
-class InvalidArgumentError(Exception):
-    pass
-
-
-class KeyAlreadyExistsError(Exception):
-    pass
-
-
-class ImmutableObjectError(Exception):
-    pass
-
-
-class ValueConversionError(Exception):
-    pass
-
-
-class SerializationError(Exception):
-    pass
-
-
-def type_nullable(elem: Any):
-    pass
-
-
-def type_list(elem: Any):
-    pass
-
-
-def type_bool():
-    pass
-
-
-def type_string():
-    pass
-
-
-def type_int():
-    pass
-
-
-def type_float():
-    pass
-
-
-def type_number():
-    pass
-
-
-def type_map():
-    pass
-
-
-def type_node():
-    pass
-
-
-def type_relationship():
-    pass
-
-
-def type_path():
-    pass
-
-
-def type_date():
-    pass
-
-
-def type_local_time():
-    pass
-
-
-def type_local_date_time():
-    pass
-
-
-def type_duration():
-    pass
-
-
-def type_any():
-    pass
-
-
-class _MODULE:
-    @staticmethod
-    def add_read_procedure(wrapper):
-        pass
-
-    @staticmethod
-    def add_write_procedure(wrapper):
-        pass
-
-    @staticmethod
-    def add_transformation(wrapper):
-        pass
-
-    @staticmethod
-    def add_function(wrapper):
-        pass

release/mgp/instructions.md

@@ -1,22 +0,0 @@
-# How to publish new versions
-## Prerequisites
-1. Installed poetry
-```
-pip install poetry
-```
-2. Set up [API tokens](https://pypi.org/help/#apitoken)
-3. Be a collaborator on [pypi](https://pypi.org/project/mgp/)
-
-## Making changes
-1. Make changes to the package
-2. Bump version in `pyproject.tml`
-3. `poetry build`
-4. `poetry publish`
-
-## Why is this not automatized?
-
-Because someone always has to manually bump up the version in `pyproject.toml`
-
-## Why does `_mgp.py` exists?
-Because we are mocking here all the types that are created by Memgraph
-in order to fix typing errors in `mgp.py`.

release/mgp/pyproject.toml

@@ -1,23 +0,0 @@
-[tool.poetry]
-name = "mgp"
-version = "1.0.0"
-description = "Memgraph's module for developing MAGE modules. Used only for type hinting!"
-authors = [
-    "MasterMedo <mislav.vuletic@gmail.com>",
-    "jbajic <jure.bajic@memgraph.io>",
-    "katarinasupe <katarina.supe@memgraph.io>",
-    "antejavor <ante.javor@memgraph.io>",
-    "antaljanosbenjamin <benjamin.antal@memgraph.io>",
-]
-license = "Apache-2.0"
-readme = "README.md"
-include = ["mgp.py", "_mgp.py"]
-
-[tool.poetry.dependencies]
-python = "^3.7"
-
-[tool.poetry.dev-dependencies]
-
-[build-system]
-requires = ["poetry-core>=1.0.0"]
-build-backend = "poetry.core.masonry.api"

src/CMakeLists.txt

@@ -5,22 +5,16 @@ add_subdirectory(lisp)
 add_subdirectory(utils)
 add_subdirectory(requests)
 add_subdirectory(io)
-add_subdirectory(io/simulator)
 add_subdirectory(kvstore)
 add_subdirectory(telemetry)
 add_subdirectory(communication)
 add_subdirectory(memory)
 add_subdirectory(storage/v2)
-add_subdirectory(storage/v3)
 add_subdirectory(integrations)
 add_subdirectory(query)
-add_subdirectory(query/v2)
 add_subdirectory(slk)
 add_subdirectory(rpc)
 add_subdirectory(auth)
-add_subdirectory(parser)
-add_subdirectory(expr)
-add_subdirectory(coordinator)
 
 if (MG_ENTERPRISE)
   add_subdirectory(audit)

src/auth/models.cpp

@@ -37,7 +37,7 @@ const std::vector<Permission> kPermissionsAll = {
     Permission::CONSTRAINT, Permission::DUMP,      Permission::AUTH,        Permission::REPLICATION,
     Permission::DURABILITY, Permission::READ_FILE, Permission::FREE_MEMORY, Permission::TRIGGER,
     Permission::CONFIG,     Permission::STREAM,    Permission::MODULE_READ, Permission::MODULE_WRITE,
-    Permission::WEBSOCKET,  Permission::SCHEMA};
+    Permission::WEBSOCKET};
 }  // namespace
 
 std::string PermissionToString(Permission permission) {
@@ -84,8 +84,6 @@ std::string PermissionToString(Permission permission) {
       return "MODULE_WRITE";
     case Permission::WEBSOCKET:
       return "WEBSOCKET";
-    case Permission::SCHEMA:
-      return "SCHEMA";
   }
 }
 

src/auth/models.hpp

@@ -38,8 +38,7 @@ enum class Permission : uint64_t {
   STREAM       = 1U << 17U,
   MODULE_READ  = 1U << 18U,
   MODULE_WRITE = 1U << 19U,
-  WEBSOCKET    = 1U << 20U,
-  SCHEMA       = 1U << 21U
+  WEBSOCKET    = 1U << 20U
 };
 // clang-format on
 

src/common/types.hpp

@@ -1,19 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <cstdint>
-
-namespace memgraph::common {
-enum class SchemaType : uint8_t { BOOL, INT, STRING, DATE, LOCALTIME, LOCALDATETIME, DURATION };
-
-}  // namespace memgraph::common

src/coordinator/CMakeLists.txt

@@ -1,9 +0,0 @@
-set(coordinator_src_files
-    coordinator.cpp
-    shard_map.cpp)
-
-find_package(fmt REQUIRED)
-find_package(Threads REQUIRED)
-
-add_library(mg-coordinator STATIC ${coordinator_src_files})
-target_link_libraries(mg-coordinator stdc++fs Threads::Threads fmt::fmt mg-utils mg-storage-v3)

src/coordinator/coordinator.cpp

@@ -1,129 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include <coordinator/coordinator.hpp>
-
-namespace memgraph::coordinator {
-
-CoordinatorWriteResponses Coordinator::ApplyWrite(HeartbeatRequest &&heartbeat_request) {
-  spdlog::info("Coordinator handling HeartbeatRequest");
-
-  // add this storage engine to any under-replicated shards that it is not already a part of
-
-  auto initializing_rsms_for_shard_manager =
-      shard_map_.AssignShards(heartbeat_request.from_storage_manager, heartbeat_request.initialized_rsms);
-
-  return HeartbeatResponse{
-      .shards_to_initialize = initializing_rsms_for_shard_manager,
-  };
-}
-
-CoordinatorWriteResponses Coordinator::ApplyWrite(HlcRequest &&hlc_request) {
-  HlcResponse res{};
-
-  auto hlc_shard_map = shard_map_.GetHlc();
-
-  MG_ASSERT(!(hlc_request.last_shard_map_version.logical_id > hlc_shard_map.logical_id));
-
-  res.new_hlc = Hlc{
-      .logical_id = ++highest_allocated_timestamp_,
-      // TODO(tyler) probably pass some more context to the Coordinator here
-      // so that we can use our wall clock and enforce monotonicity.
-      // .coordinator_wall_clock = io_.Now(),
-  };
-
-  // Allways return fresher shard_map for now.
-  res.fresher_shard_map = std::make_optional(shard_map_);
-
-  return res;
-}
-
-CoordinatorWriteResponses Coordinator::ApplyWrite(AllocateEdgeIdBatchRequest &&ahr) {
-  AllocateEdgeIdBatchResponse res{};
-
-  uint64_t low = highest_allocated_edge_id_;
-
-  highest_allocated_edge_id_ += ahr.batch_size;
-
-  uint64_t high = highest_allocated_edge_id_;
-
-  res.low = low;
-  res.high = high;
-
-  return res;
-}
-
-/// This splits the shard immediately beneath the provided
-/// split key, keeping the assigned peers identical for now,
-/// but letting them be gradually migrated over time.
-CoordinatorWriteResponses Coordinator::ApplyWrite(SplitShardRequest &&split_shard_request) {
-  SplitShardResponse res{};
-
-  if (split_shard_request.previous_shard_map_version != shard_map_.shard_map_version) {
-    res.success = false;
-  } else {
-    res.success = shard_map_.SplitShard(split_shard_request.previous_shard_map_version, split_shard_request.label_id,
-                                        split_shard_request.split_key);
-  }
-
-  return res;
-}
-
-/// This adds the provided storage engine to the standby storage engine pool,
-/// which can be used to rebalance storage over time.
-CoordinatorWriteResponses Coordinator::ApplyWrite(
-    RegisterStorageEngineRequest && /* register_storage_engine_request */) {
-  RegisterStorageEngineResponse res{};
-  // TODO
-
-  return res;
-}
-
-/// This begins the process of draining the provided storage engine from all raft
-/// clusters that it might be participating in.
-CoordinatorWriteResponses Coordinator::ApplyWrite(
-    DeregisterStorageEngineRequest && /* register_storage_engine_request */) {
-  DeregisterStorageEngineResponse res{};
-  // TODO
-
-  return res;
-}
-
-CoordinatorWriteResponses Coordinator::ApplyWrite(InitializeLabelRequest &&initialize_label_request) {
-  InitializeLabelResponse res{};
-
-  std::optional<LabelId> new_label_id = shard_map_.InitializeNewLabel(
-      initialize_label_request.label_name, initialize_label_request.schema, initialize_label_request.replication_factor,
-      initialize_label_request.last_shard_map_version);
-
-  if (new_label_id) {
-    res.new_label_id = new_label_id.value();
-    res.fresher_shard_map = std::nullopt;
-    res.success = true;
-  } else {
-    res.fresher_shard_map = shard_map_;
-    res.success = false;
-  }
-
-  return res;
-}
-
-CoordinatorWriteResponses Coordinator::ApplyWrite(AllocatePropertyIdsRequest &&allocate_property_ids_request) {
-  AllocatePropertyIdsResponse res{};
-
-  auto property_ids = shard_map_.AllocatePropertyIds(allocate_property_ids_request.property_names);
-
-  res.property_ids = property_ids;
-
-  return res;
-}
-
-}  // namespace memgraph::coordinator

src/coordinator/coordinator.hpp

@@ -1,196 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <optional>
-#include <set>
-#include <string>
-#include <unordered_set>
-#include <variant>
-#include <vector>
-
-#include <boost/uuid/uuid.hpp>
-
-#include <coordinator/hybrid_logical_clock.hpp>
-#include <coordinator/shard_map.hpp>
-#include <io/simulator/simulator.hpp>
-#include <io/time.hpp>
-#include <io/transport.hpp>
-#include <storage/v3/id_types.hpp>
-#include <storage/v3/schemas.hpp>
-
-namespace memgraph::coordinator {
-
-using memgraph::io::Address;
-using memgraph::storage::v3::LabelId;
-using memgraph::storage::v3::PropertyId;
-using memgraph::storage::v3::SchemaProperty;
-using SimT = memgraph::io::simulator::SimulatorTransport;
-using PrimaryKey = std::vector<PropertyValue>;
-
-struct HlcRequest {
-  Hlc last_shard_map_version;
-};
-
-struct HlcResponse {
-  Hlc new_hlc;
-  std::optional<ShardMap> fresher_shard_map;
-};
-
-struct GetShardMapRequest {
-  // No state
-};
-
-struct GetShardMapResponse {
-  ShardMap shard_map;
-};
-
-struct AllocateHlcBatchRequest {
-  Hlc low;
-  Hlc high;
-};
-
-struct AllocateHlcBatchResponse {
-  bool success;
-  Hlc low;
-  Hlc high;
-};
-
-struct AllocateEdgeIdBatchRequest {
-  size_t batch_size;
-};
-
-struct AllocateEdgeIdBatchResponse {
-  uint64_t low;
-  uint64_t high;
-};
-
-struct AllocatePropertyIdsRequest {
-  std::vector<std::string> property_names;
-};
-
-struct AllocatePropertyIdsResponse {
-  std::map<std::string, PropertyId> property_ids;
-};
-
-struct SplitShardRequest {
-  Hlc previous_shard_map_version;
-  LabelId label_id;
-  PrimaryKey split_key;
-};
-
-struct SplitShardResponse {
-  bool success;
-};
-
-struct RegisterStorageEngineRequest {
-  Address address;
-};
-
-struct RegisterStorageEngineResponse {
-  bool success;
-};
-
-struct DeregisterStorageEngineRequest {
-  Address address;
-};
-
-struct DeregisterStorageEngineResponse {
-  bool success;
-};
-
-struct InitializeLabelRequest {
-  std::string label_name;
-  std::vector<SchemaProperty> schema;
-  size_t replication_factor;
-  Hlc last_shard_map_version;
-};
-
-struct InitializeLabelResponse {
-  bool success;
-  LabelId new_label_id;
-  std::optional<ShardMap> fresher_shard_map;
-};
-
-struct HeartbeatRequest {
-  Address from_storage_manager;
-  std::set<boost::uuids::uuid> initialized_rsms;
-};
-
-struct HeartbeatResponse {
-  std::vector<ShardToInitialize> shards_to_initialize;
-};
-
-using CoordinatorWriteRequests =
-    std::variant<HlcRequest, AllocateEdgeIdBatchRequest, SplitShardRequest, RegisterStorageEngineRequest,
-                 DeregisterStorageEngineRequest, InitializeLabelRequest, AllocatePropertyIdsRequest, HeartbeatRequest>;
-using CoordinatorWriteResponses = std::variant<HlcResponse, AllocateEdgeIdBatchResponse, SplitShardResponse,
-                                               RegisterStorageEngineResponse, DeregisterStorageEngineResponse,
-                                               InitializeLabelResponse, AllocatePropertyIdsResponse, HeartbeatResponse>;
-
-using CoordinatorReadRequests = std::variant<GetShardMapRequest>;
-using CoordinatorReadResponses = std::variant<GetShardMapResponse>;
-
-class Coordinator {
- public:
-  explicit Coordinator(ShardMap sm) : shard_map_{std::move(sm)} {}
-
-  // NOLINTNEXTLINE(readability-convert-member-functions-to-static
-  CoordinatorReadResponses Read(CoordinatorReadRequests requests) {
-    return std::visit([&](auto &&request) { return HandleRead(std::forward<decltype(request)>(request)); },
-                      std::move(requests));  // NOLINT(hicpp-move-const-arg,performance-move-const-arg)
-  }
-
-  // NOLINTNEXTLINE(readability-convert-member-functions-to-static
-  CoordinatorWriteResponses Apply(CoordinatorWriteRequests requests) {
-    return std::visit([&](auto &&request) mutable { return ApplyWrite(std::forward<decltype(request)>(request)); },
-                      std::move(requests));
-  }
-
- private:
-  ShardMap shard_map_;
-  uint64_t highest_allocated_timestamp_;
-
-  /// Query engines need to periodically request batches of unique edge IDs.
-  uint64_t highest_allocated_edge_id_;
-
-  CoordinatorReadResponses HandleRead(GetShardMapRequest && /* get_shard_map_request */) {
-    GetShardMapResponse res;
-    res.shard_map = shard_map_;
-    return res;
-  }
-
-  CoordinatorWriteResponses ApplyWrite(HeartbeatRequest &&heartbeat_request);
-
-  CoordinatorWriteResponses ApplyWrite(HlcRequest &&hlc_request);
-
-  CoordinatorWriteResponses ApplyWrite(AllocateEdgeIdBatchRequest &&ahr);
-
-  /// This splits the shard immediately beneath the provided
-  /// split key, keeping the assigned peers identical for now,
-  /// but letting them be gradually migrated over time.
-  CoordinatorWriteResponses ApplyWrite(SplitShardRequest &&split_shard_request);
-
-  /// This adds the provided storage engine to the standby storage engine pool,
-  /// which can be used to rebalance storage over time.
-  static CoordinatorWriteResponses ApplyWrite(RegisterStorageEngineRequest && /* register_storage_engine_request */);
-
-  /// This begins the process of draining the provided storage engine from all raft
-  /// clusters that it might be participating in.
-  static CoordinatorWriteResponses ApplyWrite(DeregisterStorageEngineRequest && /* register_storage_engine_request */);
-
-  CoordinatorWriteResponses ApplyWrite(InitializeLabelRequest &&initialize_label_request);
-
-  CoordinatorWriteResponses ApplyWrite(AllocatePropertyIdsRequest &&allocate_property_ids_request);
-};
-
-}  // namespace memgraph::coordinator

src/coordinator/coordinator_client.hpp

@@ -1,24 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include "coordinator/coordinator.hpp"
-#include "io/rsm/rsm_client.hpp"
-
-namespace memgraph::coordinator {
-
-using memgraph::io::rsm::RsmClient;
-
-template <typename IoImpl>
-using CoordinatorClient = RsmClient<IoImpl, CoordinatorWriteRequests, CoordinatorWriteResponses,
-                                    CoordinatorReadRequests, CoordinatorReadResponses>;
-}  // namespace memgraph::coordinator

src/coordinator/coordinator_rsm.hpp

@@ -1,23 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include "coordinator/coordinator.hpp"
-#include "io/rsm/raft.hpp"
-
-namespace memgraph::coordinator {
-
-template <typename IoImpl>
-using CoordinatorRsm = memgraph::io::rsm::Raft<IoImpl, Coordinator, CoordinatorWriteRequests, CoordinatorWriteResponses,
-                                               CoordinatorReadRequests, CoordinatorReadResponses>;
-
-}  // namespace memgraph::coordinator

src/coordinator/hybrid_logical_clock.hpp

@@ -1,36 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <compare>
-
-#include "io/time.hpp"
-
-namespace memgraph::coordinator {
-
-using Time = memgraph::io::Time;
-
-/// Hybrid-logical clock
-struct Hlc {
-  uint64_t logical_id;
-  Time coordinator_wall_clock;
-
-  auto operator<=>(const Hlc &other) const { return logical_id <=> other.logical_id; }
-
-  bool operator==(const Hlc &other) const = default;
-  bool operator<(const Hlc &other) const = default;
-  bool operator==(const uint64_t other) const { return logical_id == other; }
-  bool operator<(const uint64_t other) const { return logical_id < other; }
-  bool operator>=(const uint64_t other) const { return logical_id >= other; }
-};
-
-}  // namespace memgraph::coordinator

src/coordinator/shard_map.cpp

@@ -1,90 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "coordinator/shard_map.hpp"
-#include "storage/v3/temporal.hpp"
-
-namespace memgraph::coordinator {
-
-using memgraph::common::SchemaType;
-using memgraph::storage::v3::TemporalData;
-using memgraph::storage::v3::TemporalType;
-
-PrimaryKey SchemaToMinKey(const std::vector<SchemaProperty> &schema) {
-  PrimaryKey ret{};
-
-  const int64_t min_int = std::numeric_limits<int64_t>::min();
-
-  const TemporalData date{TemporalType::Date, min_int};
-  const TemporalData local_time{TemporalType::LocalTime, min_int};
-  const TemporalData local_date_time{TemporalType::LocalDateTime, min_int};
-  const TemporalData duration{TemporalType::Duration, min_int};
-
-  for (const auto &schema_property : schema) {
-    switch (schema_property.type) {
-      case SchemaType::BOOL:
-        ret.emplace_back(PropertyValue(false));
-        break;
-      case SchemaType::INT:
-        ret.emplace_back(PropertyValue(min_int));
-        break;
-      case SchemaType::STRING:
-        ret.emplace_back(PropertyValue(""));
-        break;
-      case SchemaType::DATE:
-        ret.emplace_back(PropertyValue(date));
-        break;
-      case SchemaType::LOCALTIME:
-        ret.emplace_back(PropertyValue(local_time));
-        break;
-      case SchemaType::LOCALDATETIME:
-        ret.emplace_back(PropertyValue(local_date_time));
-        break;
-      case SchemaType::DURATION:
-        ret.emplace_back(PropertyValue(duration));
-        break;
-    }
-  }
-
-  return ret;
-}
-
-std::optional<LabelId> ShardMap::InitializeNewLabel(std::string label_name, std::vector<SchemaProperty> schema,
-                                                    size_t replication_factor, Hlc last_shard_map_version) {
-  if (shard_map_version != last_shard_map_version || labels.contains(label_name)) {
-    return std::nullopt;
-  }
-
-  const LabelId label_id = LabelId::FromUint(++max_label_id);
-
-  labels.emplace(std::move(label_name), label_id);
-
-  PrimaryKey initial_key = SchemaToMinKey(schema);
-  Shard empty_shard = {};
-
-  Shards shards = {
-      {initial_key, empty_shard},
-  };
-
-  LabelSpace label_space{
-      .schema = std::move(schema),
-      .shards = shards,
-      .replication_factor = replication_factor,
-  };
-
-  label_spaces.emplace(label_id, label_space);
-
-  IncrementShardMapVersion();
-
-  return label_id;
-}
-
-}  // namespace memgraph::coordinator

src/coordinator/shard_map.hpp

@@ -1,276 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <limits>
-#include <map>
-#include <set>
-#include <vector>
-
-#include <boost/uuid/uuid.hpp>
-#include <boost/uuid/uuid_generators.hpp>
-
-#include "common/types.hpp"
-#include "coordinator/hybrid_logical_clock.hpp"
-#include "io/address.hpp"
-#include "storage/v3/config.hpp"
-#include "storage/v3/id_types.hpp"
-#include "storage/v3/property_value.hpp"
-#include "storage/v3/schemas.hpp"
-#include "storage/v3/temporal.hpp"
-
-namespace memgraph::coordinator {
-
-using memgraph::io::Address;
-using memgraph::storage::v3::Config;
-using memgraph::storage::v3::LabelId;
-using memgraph::storage::v3::PropertyId;
-using memgraph::storage::v3::PropertyValue;
-using memgraph::storage::v3::SchemaProperty;
-
-enum class Status : uint8_t {
-  CONSENSUS_PARTICIPANT,
-  INITIALIZING,
-  // TODO(tyler) this will possibly have more states,
-  // depending on the reconfiguration protocol that we
-  // implement.
-};
-
-struct AddressAndStatus {
-  memgraph::io::Address address;
-  Status status;
-  friend bool operator<(const AddressAndStatus &lhs, const AddressAndStatus &rhs) { return lhs.address < rhs.address; }
-};
-
-using PrimaryKey = std::vector<PropertyValue>;
-using Shard = std::vector<AddressAndStatus>;
-using Shards = std::map<PrimaryKey, Shard>;
-using LabelName = std::string;
-using PropertyName = std::string;
-using PropertyMap = std::map<PropertyName, PropertyId>;
-
-struct ShardToInitialize {
-  boost::uuids::uuid uuid;
-  LabelId label_id;
-  PrimaryKey min_key;
-  std::optional<PrimaryKey> max_key;
-  Config config;
-};
-
-PrimaryKey SchemaToMinKey(const std::vector<SchemaProperty> &schema);
-
-struct LabelSpace {
-  std::vector<SchemaProperty> schema;
-  std::map<PrimaryKey, Shard> shards;
-  size_t replication_factor;
-};
-
-struct ShardMap {
-  Hlc shard_map_version;
-  uint64_t max_property_id;
-  std::map<PropertyName, PropertyId> properties;
-  uint64_t max_label_id;
-  std::map<LabelName, LabelId> labels;
-  std::map<LabelId, LabelSpace> label_spaces;
-  std::map<LabelId, std::vector<SchemaProperty>> schemas;
-
-  Shards GetShards(const LabelName &label) {
-    const auto id = labels.at(label);
-    auto &shards = label_spaces.at(id).shards;
-    return shards;
-  }
-
-  // TODO(gabor) later we will want to update the wallclock time with
-  // the given Io<impl>'s time as well
-  Hlc IncrementShardMapVersion() noexcept {
-    ++shard_map_version.logical_id;
-    return shard_map_version;
-  }
-
-  Hlc GetHlc() const noexcept { return shard_map_version; }
-
-  // Returns the shard UUIDs that have been assigned but not yet acknowledged for this storage manager
-  std::vector<ShardToInitialize> AssignShards(Address storage_manager, std::set<boost::uuids::uuid> initialized) {
-    std::vector<ShardToInitialize> ret{};
-
-    bool mutated = false;
-
-    for (auto &[label_id, label_space] : label_spaces) {
-      for (auto &[low_key, shard] : label_space.shards) {
-        // TODO(tyler) avoid these triple-nested loops by having the heartbeat include better info
-        bool machine_contains_shard = false;
-
-        for (auto &aas : shard) {
-          if (initialized.contains(aas.address.unique_id)) {
-            spdlog::info("marking shard as full consensus participant: {}", aas.address.unique_id);
-            aas.status = Status::CONSENSUS_PARTICIPANT;
-            machine_contains_shard = true;
-          } else {
-            const bool same_machine = aas.address.last_known_ip == storage_manager.last_known_ip &&
-                                      aas.address.last_known_port == storage_manager.last_known_port;
-            if (same_machine) {
-              machine_contains_shard = true;
-              ret.push_back(ShardToInitialize{
-                  .uuid = aas.address.unique_id,
-                  .label_id = label_id,
-                  .min_key = low_key,
-                  .max_key = std::nullopt,
-                  .config = Config{},
-              });
-            }
-          }
-        }
-
-        if (!machine_contains_shard && shard.size() < label_space.replication_factor) {
-          Address address = storage_manager;
-
-          // TODO(tyler) use deterministic UUID so that coordinators don't diverge here
-          address.unique_id = boost::uuids::uuid{boost::uuids::random_generator()()},
-
-          ret.push_back(ShardToInitialize{
-              .uuid = address.unique_id,
-              .label_id = label_id,
-              .min_key = low_key,
-              .max_key = std::nullopt,
-              .config = Config{},
-          });
-
-          AddressAndStatus aas = {
-              .address = address,
-              .status = Status::INITIALIZING,
-          };
-
-          shard.emplace_back(aas);
-        }
-      }
-    }
-
-    if (mutated) {
-      IncrementShardMapVersion();
-    }
-
-    return ret;
-  }
-
-  bool SplitShard(Hlc previous_shard_map_version, LabelId label_id, const PrimaryKey &key) {
-    if (previous_shard_map_version != shard_map_version) {
-      return false;
-    }
-
-    auto &label_space = label_spaces.at(label_id);
-    auto &shards_in_map = label_space.shards;
-
-    MG_ASSERT(!shards_in_map.empty());
-    MG_ASSERT(!shards_in_map.contains(key));
-    MG_ASSERT(label_spaces.contains(label_id));
-
-    // Finding the Shard that the new PrimaryKey should map to.
-    auto prev = std::prev(shards_in_map.upper_bound(key));
-    Shard duplicated_shard = prev->second;
-
-    // Apply the split
-    shards_in_map[key] = duplicated_shard;
-
-    return true;
-  }
-
-  std::optional<LabelId> InitializeNewLabel(std::string label_name, std::vector<SchemaProperty> schema,
-                                            size_t replication_factor, Hlc last_shard_map_version);
-
-  void AddServer(Address server_address) {
-    // Find a random place for the server to plug in
-  }
-
-  LabelId GetLabelId(const std::string &label) const { return labels.at(label); }
-
-  Shards GetShardsForRange(const LabelName &label_name, const PrimaryKey &start_key, const PrimaryKey &end_key) const {
-    MG_ASSERT(start_key <= end_key);
-    MG_ASSERT(labels.contains(label_name));
-
-    LabelId label_id = labels.at(label_name);
-
-    const auto &label_space = label_spaces.at(label_id);
-
-    const auto &shards_for_label = label_space.shards;
-
-    MG_ASSERT(shards_for_label.begin()->first <= start_key,
-              "the ShardMap must always contain a minimal key that is less than or equal to any requested key");
-
-    auto it = std::prev(shards_for_label.upper_bound(start_key));
-    const auto end_it = shards_for_label.upper_bound(end_key);
-
-    Shards shards{};
-
-    std::copy(it, end_it, std::inserter(shards, shards.end()));
-
-    return shards;
-  }
-
-  Shard GetShardForKey(const LabelName &label_name, const PrimaryKey &key) const {
-    MG_ASSERT(labels.contains(label_name));
-
-    LabelId label_id = labels.at(label_name);
-
-    const auto &label_space = label_spaces.at(label_id);
-
-    MG_ASSERT(label_space.shards.begin()->first <= key,
-              "the ShardMap must always contain a minimal key that is less than or equal to any requested key");
-
-    return std::prev(label_space.shards.upper_bound(key))->second;
-  }
-
-  Shard GetShardForKey(const LabelId &label_id, const PrimaryKey &key) const {
-    MG_ASSERT(label_spaces.contains(label_id));
-
-    const auto &label_space = label_spaces.at(label_id);
-
-    MG_ASSERT(label_space.shards.begin()->first <= key,
-              "the ShardMap must always contain a minimal key that is less than or equal to any requested key");
-
-    return std::prev(label_space.shards.upper_bound(key))->second;
-  }
-
-  PropertyMap AllocatePropertyIds(const std::vector<PropertyName> &new_properties) {
-    PropertyMap ret{};
-
-    bool mutated = false;
-
-    for (const auto &property_name : new_properties) {
-      if (properties.contains(property_name)) {
-        auto property_id = properties.at(property_name);
-        ret.emplace(property_name, property_id);
-      } else {
-        mutated = true;
-
-        const PropertyId property_id = PropertyId::FromUint(++max_property_id);
-        ret.emplace(property_name, property_id);
-        properties.emplace(property_name, property_id);
-      }
-    }
-
-    if (mutated) {
-      IncrementShardMapVersion();
-    }
-
-    return ret;
-  }
-
-  std::optional<PropertyId> GetPropertyId(const std::string &property_name) const {
-    if (properties.contains(property_name)) {
-      return properties.at(property_name);
-    }
-
-    return std::nullopt;
-  }
-};
-
-}  // namespace memgraph::coordinator

src/expr/CMakeLists.txt

@@ -1,20 +0,0 @@
-define_add_lcp(add_lcp_expr lcp_expr_cpp_files generated_lcp_expr_files)
-
-add_lcp_expr(semantic/symbol.lcp)
-
-add_custom_target(generate_lcp_expr DEPENDS ${generated_lcp_expr_files})
-
-set(mg_expr_sources
-    ${lcp_expr_cpp_files}
-    parsing.cpp)
-
-find_package(Boost REQUIRED)
-
-add_library(mg-expr STATIC ${mg_expr_sources})
-add_dependencies(mg-expr generate_lcp_expr)
-target_include_directories(mg-expr PUBLIC ${CMAKE_SOURCE_DIR}/include)
-target_include_directories(mg-expr PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
-target_include_directories(mg-expr PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/ast)
-target_include_directories(mg-expr PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/interpret)
-target_include_directories(mg-expr PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/semantic)
-target_link_libraries(mg-expr cppitertools Boost::headers mg-utils mg-parser)

src/expr/ast.hpp

@@ -1,35 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-#pragma once
-
-#ifndef MG_AST_INCLUDE_PATH
-#ifdef MG_CLANG_TIDY_CHECK
-// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define MG_AST_INCLUDE_PATH "query/v2/frontend/ast/ast.hpp"
-#else
-#error Missing AST include path
-#endif
-#endif
-
-#ifndef MG_INJECTED_NAMESPACE_NAME
-#ifdef MG_CLANG_TIDY_CHECK
-// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define MG_INJECTED_NAMESPACE_NAME memgraph::query::v2
-#else
-#error Missing AST namespace
-#endif
-#endif
-
-#include MG_AST_INCLUDE_PATH
-
-namespace memgraph::expr {
-using namespace MG_INJECTED_NAMESPACE_NAME;  // NOLINT(google-build-using-namespace)
-}  // namespace memgraph::expr

src/expr/ast/ast_visitor.hpp

@@ -1,135 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include "utils/visitor.hpp"
-
-namespace MG_INJECTED_NAMESPACE_NAME {
-
-// Forward declares for Tree visitors.
-class CypherQuery;
-class SingleQuery;
-class CypherUnion;
-class NamedExpression;
-class Identifier;
-class PropertyLookup;
-class LabelsTest;
-class Aggregation;
-class Function;
-class Reduce;
-class Coalesce;
-class Extract;
-class All;
-class Single;
-class Any;
-class None;
-class ParameterLookup;
-class CallProcedure;
-class Create;
-class Match;
-class Return;
-class With;
-class Pattern;
-class NodeAtom;
-class EdgeAtom;
-class PrimitiveLiteral;
-class ListLiteral;
-class MapLiteral;
-class OrOperator;
-class XorOperator;
-class AndOperator;
-class NotOperator;
-class AdditionOperator;
-class SubtractionOperator;
-class MultiplicationOperator;
-class DivisionOperator;
-class ModOperator;
-class UnaryPlusOperator;
-class UnaryMinusOperator;
-class IsNullOperator;
-class NotEqualOperator;
-class EqualOperator;
-class LessOperator;
-class GreaterOperator;
-class LessEqualOperator;
-class GreaterEqualOperator;
-class InListOperator;
-class SubscriptOperator;
-class ListSlicingOperator;
-class IfOperator;
-class Delete;
-class Where;
-class SetProperty;
-class SetProperties;
-class SetLabels;
-class RemoveProperty;
-class RemoveLabels;
-class Merge;
-class Unwind;
-class AuthQuery;
-class ExplainQuery;
-class ProfileQuery;
-class IndexQuery;
-class InfoQuery;
-class ConstraintQuery;
-class RegexMatch;
-class DumpQuery;
-class ReplicationQuery;
-class LockPathQuery;
-class LoadCsv;
-class FreeMemoryQuery;
-class TriggerQuery;
-class IsolationLevelQuery;
-class CreateSnapshotQuery;
-class StreamQuery;
-class SettingQuery;
-class VersionQuery;
-class Foreach;
-class SchemaQuery;
-
-using TreeCompositeVisitor = memgraph::utils::CompositeVisitor<
-    SingleQuery, CypherUnion, NamedExpression, OrOperator, XorOperator, AndOperator, NotOperator, AdditionOperator,
-    SubtractionOperator, MultiplicationOperator, DivisionOperator, ModOperator, NotEqualOperator, EqualOperator,
-    LessOperator, GreaterOperator, LessEqualOperator, GreaterEqualOperator, InListOperator, SubscriptOperator,
-    ListSlicingOperator, IfOperator, UnaryPlusOperator, UnaryMinusOperator, IsNullOperator, ListLiteral, MapLiteral,
-    PropertyLookup, LabelsTest, Aggregation, Function, Reduce, Coalesce, Extract, All, Single, Any, None, CallProcedure,
-    Create, Match, Return, With, Pattern, NodeAtom, EdgeAtom, Delete, Where, SetProperty, SetProperties, SetLabels,
-    RemoveProperty, RemoveLabels, Merge, Unwind, RegexMatch, LoadCsv, Foreach>;
-
-using TreeLeafVisitor = memgraph::utils::LeafVisitor<Identifier, PrimitiveLiteral, ParameterLookup>;
-
-class HierarchicalTreeVisitor : public TreeCompositeVisitor, public TreeLeafVisitor {
- public:
-  using TreeCompositeVisitor::PostVisit;
-  using TreeCompositeVisitor::PreVisit;
-  using TreeLeafVisitor::Visit;
-  using typename TreeLeafVisitor::ReturnType;
-};
-
-template <class TResult>
-class ExpressionVisitor
-    : public memgraph::utils::Visitor<
-          TResult, NamedExpression, OrOperator, XorOperator, AndOperator, NotOperator, AdditionOperator,
-          SubtractionOperator, MultiplicationOperator, DivisionOperator, ModOperator, NotEqualOperator, EqualOperator,
-          LessOperator, GreaterOperator, LessEqualOperator, GreaterEqualOperator, InListOperator, SubscriptOperator,
-          ListSlicingOperator, IfOperator, UnaryPlusOperator, UnaryMinusOperator, IsNullOperator, ListLiteral,
-          MapLiteral, PropertyLookup, LabelsTest, Aggregation, Function, Reduce, Coalesce, Extract, All, Single, Any,
-          None, ParameterLookup, Identifier, PrimitiveLiteral, RegexMatch> {};
-
-template <class TResult>
-class QueryVisitor
-    : public memgraph::utils::Visitor<TResult, CypherQuery, ExplainQuery, ProfileQuery, IndexQuery, AuthQuery,
-                                      InfoQuery, ConstraintQuery, DumpQuery, ReplicationQuery, LockPathQuery,
-                                      FreeMemoryQuery, TriggerQuery, IsolationLevelQuery, CreateSnapshotQuery,
-                                      StreamQuery, SettingQuery, VersionQuery, SchemaQuery> {};
-
-}  // namespace MG_INJECTED_NAMESPACE_NAME

src/expr/ast/pretty_print.hpp

@@ -1,271 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <iostream>
-#include <type_traits>
-
-#include "expr/ast.hpp"
-#include "expr/typed_value.hpp"
-#include "utils/algorithm.hpp"
-#include "utils/logging.hpp"
-#include "utils/string.hpp"
-
-namespace memgraph::expr {
-namespace detail {
-template <typename T>
-void PrintObject(std::ostream *out, const T &arg) {
-  static_assert(!std::is_convertible<T, Expression *>::value,
-                "This overload shouldn't be called with pointers convertible "
-                "to Expression *. This means your other PrintObject overloads aren't "
-                "being called for certain AST nodes when they should (or perhaps such "
-                "overloads don't exist yet).");
-  *out << arg;
-}
-
-inline void PrintObject(std::ostream *out, const std::string &str) { *out << utils::Escape(str); }
-
-inline void PrintObject(std::ostream *out, Aggregation::Op op) { *out << Aggregation::OpToString(op); }
-
-inline void PrintObject(std::ostream *out, Expression *expr);
-
-inline void PrintObject(std::ostream *out, Identifier *expr) { PrintObject(out, static_cast<Expression *>(expr)); }
-
-template <typename T>
-void PrintObject(std::ostream *out, const std::vector<T> &vec) {
-  *out << "[";
-  utils::PrintIterable(*out, vec, ", ", [](auto &stream, const auto &item) { PrintObject(&stream, item); });
-  *out << "]";
-}
-
-template <typename T>
-void PrintObject(std::ostream *out, const std::vector<T, utils::Allocator<T>> &vec) {
-  *out << "[";
-  utils::PrintIterable(*out, vec, ", ", [](auto &stream, const auto &item) { PrintObject(&stream, item); });
-  *out << "]";
-}
-
-template <typename K, typename V>
-void PrintObject(std::ostream *out, const std::map<K, V> &map) {
-  *out << "{";
-  utils::PrintIterable(*out, map, ", ", [](auto &stream, const auto &item) {
-    PrintObject(&stream, item.first);
-    stream << ": ";
-    PrintObject(&stream, item.second);
-  });
-  *out << "}";
-}
-
-template <typename T>
-void PrintObject(std::ostream *out, const utils::pmr::map<utils::pmr::string, T> &map) {
-  *out << "{";
-  utils::PrintIterable(*out, map, ", ", [](auto &stream, const auto &item) {
-    PrintObject(&stream, item.first);
-    stream << ": ";
-    PrintObject(&stream, item.second);
-  });
-  *out << "}";
-}
-
-template <typename T1, typename T2, typename T3>
-inline void PrintObject(std::ostream *out, const TypedValueT<T1, T2, T3> &value) {
-  using TypedValue = TypedValueT<T1, T2, T3>;
-  switch (value.type()) {
-    case TypedValue::Type::Null:
-      *out << "null";
-      break;
-    case TypedValue::Type::String:
-      PrintObject(out, value.ValueString());
-      break;
-    case TypedValue::Type::Bool:
-      *out << (value.ValueBool() ? "true" : "false");
-      break;
-    case TypedValue::Type::Int:
-      PrintObject(out, value.ValueInt());
-      break;
-    case TypedValue::Type::Double:
-      PrintObject(out, value.ValueDouble());
-      break;
-    case TypedValue::Type::List:
-      PrintObject(out, value.ValueList());
-      break;
-    case TypedValue::Type::Map:
-      PrintObject(out, value.ValueMap());
-      break;
-    case TypedValue::Type::Date:
-      PrintObject(out, value.ValueDate());
-      break;
-    case TypedValue::Type::Duration:
-      PrintObject(out, value.ValueDuration());
-      break;
-    case TypedValue::Type::LocalTime:
-      PrintObject(out, value.ValueLocalTime());
-      break;
-    case TypedValue::Type::LocalDateTime:
-      PrintObject(out, value.ValueLocalDateTime());
-      break;
-    default:
-      MG_ASSERT(false, "PrintObject(std::ostream *out, const TypedValue &value) should not reach here");
-  }
-}
-
-template <typename T>
-void PrintOperatorArgs(std::ostream *out, const T &arg) {
-  *out << " ";
-  PrintObject(out, arg);
-  *out << ")";
-}
-
-template <typename T, typename... Ts>
-void PrintOperatorArgs(std::ostream *out, const T &arg, const Ts &...args) {
-  *out << " ";
-  PrintObject(out, arg);
-  PrintOperatorArgs(out, args...);
-}
-
-template <typename... Ts>
-void PrintOperator(std::ostream *out, const std::string &name, const Ts &...args) {
-  *out << "(" << name;
-  PrintOperatorArgs(out, args...);
-}
-}  // namespace detail
-
-class ExpressionPrettyPrinter : public ExpressionVisitor<void> {
- public:
-  explicit ExpressionPrettyPrinter(std::ostream *out) : out_(out) {}
-
-  // Unary operators
-  // NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define UNARY_OPERATOR_VISIT(OP_NODE, OP_STR)      \
-  /* NOLINTNEXTLINE(bugprone-macro-parentheses) */ \
-  void Visit(OP_NODE &op) override { detail::PrintOperator(out_, OP_STR, op.expression_); }
-
-  UNARY_OPERATOR_VISIT(NotOperator, "Not");
-  UNARY_OPERATOR_VISIT(UnaryPlusOperator, "+");
-  UNARY_OPERATOR_VISIT(UnaryMinusOperator, "-");
-  UNARY_OPERATOR_VISIT(IsNullOperator, "IsNull");
-
-#undef UNARY_OPERATOR_VISIT
-
-  // Binary operators
-// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define BINARY_OPERATOR_VISIT(OP_NODE, OP_STR)     \
-  /* NOLINTNEXTLINE(bugprone-macro-parentheses) */ \
-  void Visit(OP_NODE &op) override { detail::PrintOperator(out_, OP_STR, op.expression1_, op.expression2_); }
-
-  BINARY_OPERATOR_VISIT(OrOperator, "Or");
-  BINARY_OPERATOR_VISIT(XorOperator, "Xor");
-  BINARY_OPERATOR_VISIT(AndOperator, "And");
-  BINARY_OPERATOR_VISIT(AdditionOperator, "+");
-  BINARY_OPERATOR_VISIT(SubtractionOperator, "-");
-  BINARY_OPERATOR_VISIT(MultiplicationOperator, "*");
-  BINARY_OPERATOR_VISIT(DivisionOperator, "/");
-  BINARY_OPERATOR_VISIT(ModOperator, "%");
-  BINARY_OPERATOR_VISIT(NotEqualOperator, "!=");
-  BINARY_OPERATOR_VISIT(EqualOperator, "==");
-  BINARY_OPERATOR_VISIT(LessOperator, "<");
-  BINARY_OPERATOR_VISIT(GreaterOperator, ">");
-  BINARY_OPERATOR_VISIT(LessEqualOperator, "<=");
-  BINARY_OPERATOR_VISIT(GreaterEqualOperator, ">=");
-  BINARY_OPERATOR_VISIT(InListOperator, "In");
-  BINARY_OPERATOR_VISIT(SubscriptOperator, "Subscript");
-
-#undef BINARY_OPERATOR_VISIT
-
-  // Other
-  void Visit(ListSlicingOperator &op) override {
-    detail::PrintOperator(out_, "ListSlicing", op.list_, op.lower_bound_, op.upper_bound_);
-  }
-
-  void Visit(IfOperator &op) override {
-    detail::PrintOperator(out_, "If", op.condition_, op.then_expression_, op.else_expression_);
-  }
-
-  void Visit(ListLiteral &op) override { detail::PrintOperator(out_, "ListLiteral", op.elements_); }
-
-  void Visit(MapLiteral &op) override {
-    std::map<std::string, Expression *> map;
-    for (const auto &kv : op.elements_) {
-      map[kv.first.name] = kv.second;
-    }
-    detail::PrintObject(out_, map);
-  }
-
-  void Visit(LabelsTest &op) override { detail::PrintOperator(out_, "LabelsTest", op.expression_); }
-
-  void Visit(Aggregation &op) override { detail::PrintOperator(out_, "Aggregation", op.op_); }
-
-  void Visit(Function &op) override { detail::PrintOperator(out_, "Function", op.function_name_, op.arguments_); }
-
-  void Visit(Reduce &op) override {
-    detail::PrintOperator(out_, "Reduce", op.accumulator_, op.initializer_, op.identifier_, op.list_, op.expression_);
-  }
-
-  void Visit(Coalesce &op) override { detail::PrintOperator(out_, "Coalesce", op.expressions_); }
-
-  void Visit(Extract &op) override { detail::PrintOperator(out_, "Extract", op.identifier_, op.list_, op.expression_); }
-
-  void Visit(All &op) override {
-    detail::PrintOperator(out_, "All", op.identifier_, op.list_expression_, op.where_->expression_);
-  }
-
-  void Visit(Single &op) override {
-    detail::PrintOperator(out_, "Single", op.identifier_, op.list_expression_, op.where_->expression_);
-  }
-
-  void Visit(Any &op) override {
-    detail::PrintOperator(out_, "Any", op.identifier_, op.list_expression_, op.where_->expression_);
-  }
-
-  void Visit(None &op) override {
-    detail::PrintOperator(out_, "None", op.identifier_, op.list_expression_, op.where_->expression_);
-  }
-
-  void Visit(Identifier &op) override { detail::PrintOperator(out_, "Identifier", op.name_); }
-
-  void Visit(PrimitiveLiteral &op) override { detail::PrintObject(out_, op.value_); }
-
-  void Visit(PropertyLookup &op) override {
-    detail::PrintOperator(out_, "PropertyLookup", op.expression_, op.property_.name);
-  }
-
-  void Visit(ParameterLookup &op) override { detail::PrintOperator(out_, "ParameterLookup", op.token_position_); }
-
-  void Visit(NamedExpression &op) override { detail::PrintOperator(out_, "NamedExpression", op.name_, op.expression_); }
-
-  void Visit(RegexMatch &op) override { detail::PrintOperator(out_, "=~", op.string_expr_, op.regex_); }
-
- private:
-  std::ostream *out_;
-};
-
-namespace detail {
-inline void PrintObject(std::ostream *out, Expression *expr) {
-  if (expr) {
-    ExpressionPrettyPrinter printer{out};
-    expr->Accept(printer);
-  } else {
-    *out << "<null>";
-  }
-}
-}  // namespace detail
-
-inline void PrintExpression(Expression *expr, std::ostream *out) {
-  ExpressionPrettyPrinter printer{out};
-  expr->Accept(printer);
-}
-
-inline void PrintExpression(NamedExpression *expr, std::ostream *out) {
-  ExpressionPrettyPrinter printer{out};
-  expr->Accept(printer);
-}
-}  // namespace memgraph::expr

src/expr/exceptions.hpp

@@ -1,52 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include "utils/exceptions.hpp"
-
-namespace memgraph::expr {
-
-class SyntaxException : public utils::BasicException {
- public:
-  using utils::BasicException::BasicException;
-  SyntaxException() : SyntaxException("") {}
-};
-
-class SemanticException : public utils::BasicException {
- public:
-  using utils::BasicException::BasicException;
-  SemanticException() : BasicException("") {}
-};
-
-class ExpressionRuntimeException : public utils::BasicException {
- public:
-  using utils::BasicException::BasicException;
-};
-
-class RedeclareVariableError : public SemanticException {
- public:
-  explicit RedeclareVariableError(const std::string &name) : SemanticException("Redeclaring variable: " + name + ".") {}
-};
-
-class UnboundVariableError : public SemanticException {
- public:
-  explicit UnboundVariableError(const std::string &name) : SemanticException("Unbound variable: " + name + ".") {}
-};
-
-class TypeMismatchError : public SemanticException {
- public:
-  TypeMismatchError(const std::string &name, const std::string &datum, const std::string &expected)
-      : SemanticException(fmt::format("Type mismatch: {} already defined as {}, expected {}.", name, datum, expected)) {
-  }
-};
-
-}  // namespace memgraph::expr

src/expr/interpret/eval.hpp

@@ -1,826 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-/// @file
-#pragma once
-
-#include <algorithm>
-#include <limits>
-#include <map>
-#include <optional>
-#include <regex>
-#include <type_traits>
-#include <vector>
-
-#include "expr/ast.hpp"
-#include "expr/exceptions.hpp"
-#include "expr/interpret/frame.hpp"
-#include "expr/semantic/symbol_table.hpp"
-#include "utils/exceptions.hpp"
-
-namespace memgraph::expr {
-
-struct StorageTag {};
-struct QueryEngineTag {};
-
-template <typename TypedValue, typename EvaluationContext, typename DbAccessor, typename StorageView, typename LabelId,
-          typename PropertyValue, typename ConvFunctor, typename Error, typename Tag = StorageTag>
-class ExpressionEvaluator : public ExpressionVisitor<TypedValue> {
- public:
-  ExpressionEvaluator(Frame<TypedValue> *frame, const SymbolTable &symbol_table, const EvaluationContext &ctx,
-                      DbAccessor *dba, StorageView view)
-      : frame_(frame), symbol_table_(&symbol_table), ctx_(&ctx), dba_(dba), view_(view) {}
-
-  using ExpressionVisitor<TypedValue>::Visit;
-
-  utils::MemoryResource *GetMemoryResource() const { return ctx_->memory; }
-
-  TypedValue Visit(NamedExpression &named_expression) override {
-    const auto &symbol = symbol_table_->at(named_expression);
-    auto value = named_expression.expression_->Accept(*this);
-    frame_->at(symbol) = value;
-    return value;
-  }
-
-  TypedValue Visit(Identifier &ident) override {
-    return TypedValue(frame_->at(symbol_table_->at(ident)), ctx_->memory);
-  }
-
-  // NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define BINARY_OPERATOR_VISITOR(OP_NODE, CPP_OP, CYPHER_OP)                                                         \
-  /* NOLINTNEXTLINE(bugprone-macro-parentheses) */                                                                  \
-  TypedValue Visit(OP_NODE &op) override {                                                                          \
-    auto val1 = op.expression1_->Accept(*this);                                                                     \
-    auto val2 = op.expression2_->Accept(*this);                                                                     \
-    try {                                                                                                           \
-      return val1 CPP_OP val2;                                                                                      \
-    } catch (const TypedValueException &) {                                                                         \
-      throw ExpressionRuntimeException("Invalid types: {} and {} for '{}'.", val1.type(), val2.type(), #CYPHER_OP); \
-    }                                                                                                               \
-  }
-
-  // NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define UNARY_OPERATOR_VISITOR(OP_NODE, CPP_OP, CYPHER_OP)                                   \
-  /* NOLINTNEXTLINE(bugprone-macro-parentheses) */                                           \
-  TypedValue Visit(OP_NODE &op) override {                                                   \
-    auto val = op.expression_->Accept(*this);                                                \
-    try {                                                                                    \
-      return CPP_OP val;                                                                     \
-    } catch (const TypedValueException &) {                                                  \
-      throw ExpressionRuntimeException("Invalid type {} for '{}'.", val.type(), #CYPHER_OP); \
-    }                                                                                        \
-  }
-
-  BINARY_OPERATOR_VISITOR(OrOperator, ||, OR);
-  BINARY_OPERATOR_VISITOR(XorOperator, ^, XOR);
-  BINARY_OPERATOR_VISITOR(AdditionOperator, +, +);
-  BINARY_OPERATOR_VISITOR(SubtractionOperator, -, -);
-  BINARY_OPERATOR_VISITOR(MultiplicationOperator, *, *);
-  BINARY_OPERATOR_VISITOR(DivisionOperator, /, /);
-  BINARY_OPERATOR_VISITOR(ModOperator, %, %);
-  BINARY_OPERATOR_VISITOR(NotEqualOperator, !=, <>);
-  BINARY_OPERATOR_VISITOR(EqualOperator, ==, =);
-  BINARY_OPERATOR_VISITOR(LessOperator, <, <);
-  BINARY_OPERATOR_VISITOR(GreaterOperator, >, >);
-  BINARY_OPERATOR_VISITOR(LessEqualOperator, <=, <=);
-  BINARY_OPERATOR_VISITOR(GreaterEqualOperator, >=, >=);
-
-  UNARY_OPERATOR_VISITOR(NotOperator, !, NOT);
-  UNARY_OPERATOR_VISITOR(UnaryPlusOperator, +, +);
-  UNARY_OPERATOR_VISITOR(UnaryMinusOperator, -, -);
-
-#undef BINARY_OPERATOR_VISITOR
-#undef UNARY_OPERATOR_VISITOR
-
-  TypedValue Visit(AndOperator &op) override {
-    auto value1 = op.expression1_->Accept(*this);
-    if (value1.IsBool() && !value1.ValueBool()) {
-      // If first expression is false, don't evaluate the second one.
-      return value1;
-    }
-    auto value2 = op.expression2_->Accept(*this);
-    try {
-      return value1 && value2;
-    } catch (const TypedValueException &) {
-      throw ExpressionRuntimeException("Invalid types: {} and {} for AND.", value1.type(), value2.type());
-    }
-  }
-
-  TypedValue Visit(IfOperator &if_operator) override {
-    auto condition = if_operator.condition_->Accept(*this);
-    if (condition.IsNull()) {
-      return if_operator.else_expression_->Accept(*this);
-    }
-    if (condition.type() != TypedValue::Type::Bool) {
-      // At the moment IfOperator is used only in CASE construct.
-      throw ExpressionRuntimeException("CASE expected boolean expression, got {}.", condition.type());
-    }
-    if (condition.ValueBool()) {
-      return if_operator.then_expression_->Accept(*this);
-    }
-    return if_operator.else_expression_->Accept(*this);
-  }
-
-  TypedValue Visit(InListOperator &in_list) override {
-    auto literal = in_list.expression1_->Accept(*this);
-    auto _list = in_list.expression2_->Accept(*this);
-    if (_list.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    // Exceptions have higher priority than returning nulls when list expression
-    // is not null.
-    if (_list.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("IN expected a list, got {}.", _list.type());
-    }
-    const auto &list = _list.ValueList();
-
-    // If literal is NULL there is no need to try to compare it with every
-    // element in the list since result of every comparison will be NULL. There
-    // is one special case that we must test explicitly: if list is empty then
-    // result is false since no comparison will be performed.
-    if (list.empty()) return TypedValue(false, ctx_->memory);
-    if (literal.IsNull()) return TypedValue(ctx_->memory);
-
-    auto has_null = false;
-    for (const auto &element : list) {
-      auto result = literal == element;
-      if (result.IsNull()) {
-        has_null = true;
-      } else if (result.ValueBool()) {
-        return TypedValue(true, ctx_->memory);
-      }
-    }
-    if (has_null) {
-      return TypedValue(ctx_->memory);
-    }
-    return TypedValue(false, ctx_->memory);
-  }
-
-  TypedValue Visit(SubscriptOperator &list_indexing) override {
-    auto lhs = list_indexing.expression1_->Accept(*this);
-    auto index = list_indexing.expression2_->Accept(*this);
-    if (!lhs.IsList() && !lhs.IsMap() && !lhs.IsVertex() && !lhs.IsEdge() && !lhs.IsNull())
-      throw ExpressionRuntimeException(
-          "Expected a list, a map, a node or an edge to index with '[]', got "
-          "{}.",
-          lhs.type());
-    if (lhs.IsNull() || index.IsNull()) return TypedValue(ctx_->memory);
-    if (lhs.IsList()) {
-      if (!index.IsInt())
-        throw ExpressionRuntimeException("Expected an integer as a list index, got {}.", index.type());
-      auto index_int = index.ValueInt();
-      // NOTE: Take non-const reference to list, so that we can move out the
-      // indexed element as the result.
-      auto &list = lhs.ValueList();
-      if (index_int < 0) {
-        index_int += static_cast<int64_t>(list.size());
-      }
-      if (index_int >= static_cast<int64_t>(list.size()) || index_int < 0) return TypedValue(ctx_->memory);
-      // NOTE: Explicit move is needed, so that we return the move constructed
-      // value and preserve the correct MemoryResource.
-      return std::move(list[index_int]);
-    }
-
-    if (lhs.IsMap()) {
-      if (!index.IsString())
-        throw ExpressionRuntimeException("Expected a string as a map index, got {}.", index.type());
-      // NOTE: Take non-const reference to map, so that we can move out the
-      // looked-up element as the result.
-      auto &map = lhs.ValueMap();
-      auto found = map.find(index.ValueString());
-      if (found == map.end()) return TypedValue(ctx_->memory);
-      // NOTE: Explicit move is needed, so that we return the move constructed
-      // value and preserve the correct MemoryResource.
-      return std::move(found->second);
-    }
-
-    if (lhs.IsVertex()) {
-      if (!index.IsString())
-        throw ExpressionRuntimeException("Expected a string as a property name, got {}.", index.type());
-      return TypedValue(GetProperty(lhs.ValueVertex(), index.ValueString()), ctx_->memory);
-    }
-
-    if (lhs.IsEdge()) {
-      if (!index.IsString())
-        throw ExpressionRuntimeException("Expected a string as a property name, got {}.", index.type());
-      return TypedValue(GetProperty(lhs.ValueEdge(), index.ValueString()), ctx_->memory);
-    }
-
-    // lhs is Null
-    return TypedValue(ctx_->memory);
-  }
-
-  TypedValue Visit(ListSlicingOperator &op) override {
-    // If some type is null we can't return null, because throwing exception
-    // on illegal type has higher priority.
-    auto is_null = false;
-    auto get_bound = [&](Expression *bound_expr, int64_t default_value) {
-      if (bound_expr) {
-        auto bound = bound_expr->Accept(*this);
-        if (bound.type() == TypedValue::Type::Null) {
-          is_null = true;
-        } else if (bound.type() != TypedValue::Type::Int) {
-          throw ExpressionRuntimeException("Expected an integer for a bound in list slicing, got {}.", bound.type());
-        }
-        return bound;
-      }
-      return TypedValue(default_value, ctx_->memory);
-    };
-    auto _upper_bound = get_bound(op.upper_bound_, std::numeric_limits<int64_t>::max());
-    auto _lower_bound = get_bound(op.lower_bound_, 0);
-
-    auto _list = op.list_->Accept(*this);
-    if (_list.type() == TypedValue::Type::Null) {
-      is_null = true;
-    } else if (_list.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("Expected a list to slice, got {}.", _list.type());
-    }
-
-    if (is_null) {
-      return TypedValue(ctx_->memory);
-    }
-    const auto &list = _list.ValueList();
-    auto normalise_bound = [&](int64_t bound) {
-      if (bound < 0) {
-        bound = static_cast<int64_t>(list.size()) + bound;
-      }
-      return std::max(static_cast<int64_t>(0), std::min(bound, static_cast<int64_t>(list.size())));
-    };
-    auto lower_bound = normalise_bound(_lower_bound.ValueInt());
-    auto upper_bound = normalise_bound(_upper_bound.ValueInt());
-    if (upper_bound <= lower_bound) {
-      return TypedValue(typename TypedValue::TVector(ctx_->memory), ctx_->memory);
-    }
-    return TypedValue(
-        typename TypedValue::TVector(list.begin() + lower_bound, list.begin() + upper_bound, ctx_->memory));
-  }
-
-  TypedValue Visit(IsNullOperator &is_null) override {
-    auto value = is_null.expression_->Accept(*this);
-    return TypedValue(value.IsNull(), ctx_->memory);
-  }
-
-  TypedValue Visit(PropertyLookup &property_lookup) override {
-    auto expression_result = property_lookup.expression_->Accept(*this);
-    auto maybe_date = [this](const auto &date, const auto &prop_name) -> std::optional<TypedValue> {
-      if (prop_name == "year") {
-        return TypedValue(date.year, ctx_->memory);
-      }
-      if (prop_name == "month") {
-        return TypedValue(date.month, ctx_->memory);
-      }
-      if (prop_name == "day") {
-        return TypedValue(date.day, ctx_->memory);
-      }
-      return std::nullopt;
-    };
-    auto maybe_local_time = [this](const auto &lt, const auto &prop_name) -> std::optional<TypedValue> {
-      if (prop_name == "hour") {
-        return TypedValue(lt.hour, ctx_->memory);
-      }
-      if (prop_name == "minute") {
-        return TypedValue(lt.minute, ctx_->memory);
-      }
-      if (prop_name == "second") {
-        return TypedValue(lt.second, ctx_->memory);
-      }
-      if (prop_name == "millisecond") {
-        return TypedValue(lt.millisecond, ctx_->memory);
-      }
-      if (prop_name == "microsecond") {
-        return TypedValue(lt.microsecond, ctx_->memory);
-      }
-      return std::nullopt;
-    };
-    auto maybe_duration = [this](const auto &dur, const auto &prop_name) -> std::optional<TypedValue> {
-      if (prop_name == "day") {
-        return TypedValue(dur.Days(), ctx_->memory);
-      }
-      if (prop_name == "hour") {
-        return TypedValue(dur.SubDaysAsHours(), ctx_->memory);
-      }
-      if (prop_name == "minute") {
-        return TypedValue(dur.SubDaysAsMinutes(), ctx_->memory);
-      }
-      if (prop_name == "second") {
-        return TypedValue(dur.SubDaysAsSeconds(), ctx_->memory);
-      }
-      if (prop_name == "millisecond") {
-        return TypedValue(dur.SubDaysAsMilliseconds(), ctx_->memory);
-      }
-      if (prop_name == "microsecond") {
-        return TypedValue(dur.SubDaysAsMicroseconds(), ctx_->memory);
-      }
-      if (prop_name == "nanosecond") {
-        return TypedValue(dur.SubDaysAsNanoseconds(), ctx_->memory);
-      }
-      return std::nullopt;
-    };
-    switch (expression_result.type()) {
-      case TypedValue::Type::Null:
-        return TypedValue(ctx_->memory);
-      case TypedValue::Type::Vertex:
-        return GetProperty(expression_result.ValueVertex(), property_lookup.property_);
-      case TypedValue::Type::Edge:
-        return GetProperty(expression_result.ValueEdge(), property_lookup.property_);
-      case TypedValue::Type::Map: {
-        // NOTE: Take non-const reference to map, so that we can move out the
-        // looked-up element as the result.
-        auto &map = expression_result.ValueMap();
-        auto found = map.find(property_lookup.property_.name.c_str());
-        if (found == map.end()) return TypedValue(ctx_->memory);
-        // NOTE: Explicit move is needed, so that we return the move constructed
-        // value and preserve the correct MemoryResource.
-        return std::move(found->second);
-      }
-      case TypedValue::Type::Duration: {
-        const auto &prop_name = property_lookup.property_.name;
-        const auto &dur = expression_result.ValueDuration();
-        if (auto dur_field = maybe_duration(dur, prop_name); dur_field) {
-          return std::move(*dur_field);
-        }
-        throw ExpressionRuntimeException("Invalid property name {} for Duration", prop_name);
-      }
-      case TypedValue::Type::Date: {
-        const auto &prop_name = property_lookup.property_.name;
-        const auto &date = expression_result.ValueDate();
-        if (auto date_field = maybe_date(date, prop_name); date_field) {
-          return std::move(*date_field);
-        }
-        throw ExpressionRuntimeException("Invalid property name {} for Date", prop_name);
-      }
-      case TypedValue::Type::LocalTime: {
-        const auto &prop_name = property_lookup.property_.name;
-        const auto &lt = expression_result.ValueLocalTime();
-        if (auto lt_field = maybe_local_time(lt, prop_name); lt_field) {
-          return std::move(*lt_field);
-        }
-        throw ExpressionRuntimeException("Invalid property name {} for LocalTime", prop_name);
-      }
-      case TypedValue::Type::LocalDateTime: {
-        const auto &prop_name = property_lookup.property_.name;
-        const auto &ldt = expression_result.ValueLocalDateTime();
-        if (auto date_field = maybe_date(ldt.date, prop_name); date_field) {
-          return std::move(*date_field);
-        }
-        if (auto lt_field = maybe_local_time(ldt.local_time, prop_name); lt_field) {
-          return std::move(*lt_field);
-        }
-        throw ExpressionRuntimeException("Invalid property name {} for LocalDateTime", prop_name);
-      }
-      default:
-        throw ExpressionRuntimeException("Only nodes, edges, maps and temporal types have properties to be looked-up.");
-    }
-  }
-
-  template <typename VertexAccessor, typename TTag = Tag,
-            typename TReturnType = std::enable_if_t<std::is_same_v<TTag, StorageTag>, bool>>
-  TReturnType HasLabelImpl(const VertexAccessor &vertex, const LabelIx &label, StorageTag /*tag*/) {
-    auto has_label = vertex.HasLabel(view_, GetLabel(label));
-    if (has_label.HasError() && has_label.GetError() == Error::NONEXISTENT_OBJECT) {
-      // This is a very nasty and temporary hack in order to make MERGE
-      // work. The old storage had the following logic when returning an
-      // `OLD` view: `return old ? old : new`. That means that if the
-      // `OLD` view didn't exist, it returned the NEW view. With this hack
-      // we simulate that behavior.
-      // TODO (mferencevic, teon.banek): Remove once MERGE is
-      // reimplemented.
-      has_label = vertex.HasLabel(StorageView::NEW, GetLabel(label));
-    }
-    if (has_label.HasError()) {
-      switch (has_label.GetError()) {
-        case Error::DELETED_OBJECT:
-          throw ExpressionRuntimeException("Trying to access labels on a deleted node.");
-        case Error::NONEXISTENT_OBJECT:
-          throw ExpressionRuntimeException("Trying to access labels from a node that doesn't exist.");
-        case Error::SERIALIZATION_ERROR:
-        case Error::VERTEX_HAS_EDGES:
-        case Error::PROPERTIES_DISABLED:
-          throw ExpressionRuntimeException("Unexpected error when accessing labels.");
-      }
-    }
-    return *has_label;
-  }
-
-  template <typename VertexAccessor, typename TTag = Tag,
-            typename TReturnType = std::enable_if_t<std::is_same_v<TTag, QueryEngineTag>, bool>>
-  TReturnType HasLabelImpl(const VertexAccessor &vertex, const LabelIx &label_ix, QueryEngineTag /*tag*/) {
-    auto label = typename VertexAccessor::Label{LabelId::FromUint(label_ix.ix)};
-    auto has_label = vertex.HasLabel(label);
-    return !has_label;
-  }
-
-  TypedValue Visit(LabelsTest &labels_test) override {
-    auto expression_result = labels_test.expression_->Accept(*this);
-    switch (expression_result.type()) {
-      case TypedValue::Type::Null:
-        return TypedValue(ctx_->memory);
-      case TypedValue::Type::Vertex: {
-        const auto &vertex = expression_result.ValueVertex();
-        if (std::ranges::all_of(labels_test.labels_, [&vertex, this](const auto label_test) {
-              return this->HasLabelImpl(vertex, label_test, Tag{});
-            })) {
-          return TypedValue(true, ctx_->memory);
-        }
-        return TypedValue(false, ctx_->memory);
-      }
-      default:
-        throw ExpressionRuntimeException("Only nodes have labels.");
-    }
-  }
-
-  TypedValue Visit(PrimitiveLiteral &literal) override {
-    // TODO: no need to evaluate constants, we can write it to frame in one
-    // of the previous phases.
-    return TypedValue(literal.value_, ctx_->memory);
-  }
-
-  TypedValue Visit(ListLiteral &literal) override {
-    typename TypedValue::TVector result(ctx_->memory);
-    result.reserve(literal.elements_.size());
-    for (const auto &expression : literal.elements_) result.emplace_back(expression->Accept(*this));
-    return TypedValue(result, ctx_->memory);
-  }
-
-  TypedValue Visit(MapLiteral &literal) override {
-    typename TypedValue::TMap result(ctx_->memory);
-    for (const auto &pair : literal.elements_) result.emplace(pair.first.name, pair.second->Accept(*this));
-    return TypedValue(result, ctx_->memory);
-  }
-
-  TypedValue Visit(Aggregation &aggregation) override {
-    return TypedValue(frame_->at(symbol_table_->at(aggregation)), ctx_->memory);
-  }
-
-  TypedValue Visit(Coalesce &coalesce) override {
-    auto &exprs = coalesce.expressions_;
-
-    if (exprs.size() == 0) {
-      throw ExpressionRuntimeException("'coalesce' requires at least one argument.");
-    }
-
-    for (int64_t i = 0; i < exprs.size(); ++i) {
-      TypedValue val(exprs[i]->Accept(*this), ctx_->memory);
-      if (!val.IsNull()) {
-        return val;
-      }
-    }
-
-    return TypedValue(ctx_->memory);
-  }
-
-  TypedValue Visit(Function &function) override {
-    FunctionContext function_ctx{dba_, ctx_->memory, ctx_->timestamp, &ctx_->counters, view_};
-    // Stack allocate evaluated arguments when there's a small number of them.
-    if (function.arguments_.size() <= 8) {
-      TypedValue arguments[8] = {TypedValue(ctx_->memory), TypedValue(ctx_->memory), TypedValue(ctx_->memory),
-                                 TypedValue(ctx_->memory), TypedValue(ctx_->memory), TypedValue(ctx_->memory),
-                                 TypedValue(ctx_->memory), TypedValue(ctx_->memory)};
-      for (size_t i = 0; i < function.arguments_.size(); ++i) {
-        arguments[i] = function.arguments_[i]->Accept(*this);
-      }
-      auto res = function.function_(arguments, function.arguments_.size(), function_ctx);
-      MG_ASSERT(res.GetMemoryResource() == ctx_->memory);
-      return res;
-    } else {
-      typename TypedValue::TVector arguments(ctx_->memory);
-      arguments.reserve(function.arguments_.size());
-      for (const auto &argument : function.arguments_) {
-        arguments.emplace_back(argument->Accept(*this));
-      }
-      auto res = function.function_(arguments.data(), arguments.size(), function_ctx);
-      MG_ASSERT(res.GetMemoryResource() == ctx_->memory);
-      return res;
-    }
-  }
-
-  TypedValue Visit(Reduce &reduce) override {
-    auto list_value = reduce.list_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("REDUCE expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &element_symbol = symbol_table_->at(*reduce.identifier_);
-    const auto &accumulator_symbol = symbol_table_->at(*reduce.accumulator_);
-    auto accumulator = reduce.initializer_->Accept(*this);
-    for (const auto &element : list) {
-      frame_->at(accumulator_symbol) = accumulator;
-      frame_->at(element_symbol) = element;
-      accumulator = reduce.expression_->Accept(*this);
-    }
-    return accumulator;
-  }
-
-  TypedValue Visit(Extract &extract) override {
-    auto list_value = extract.list_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("EXTRACT expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &element_symbol = symbol_table_->at(*extract.identifier_);
-    typename TypedValue::TVector result(ctx_->memory);
-    result.reserve(list.size());
-    for (const auto &element : list) {
-      if (element.IsNull()) {
-        result.emplace_back();
-      } else {
-        frame_->at(element_symbol) = element;
-        result.emplace_back(extract.expression_->Accept(*this));
-      }
-    }
-    return TypedValue(result, ctx_->memory);
-  }
-
-  TypedValue Visit(All &all) override {
-    auto list_value = all.list_expression_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("ALL expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &symbol = symbol_table_->at(*all.identifier_);
-    bool has_null_elements = false;
-    bool has_value = false;
-    for (const auto &element : list) {
-      frame_->at(symbol) = element;
-      auto result = all.where_->expression_->Accept(*this);
-      if (!result.IsNull() && result.type() != TypedValue::Type::Bool) {
-        throw ExpressionRuntimeException("Predicate of ALL must evaluate to boolean, got {}.", result.type());
-      }
-      if (!result.IsNull()) {
-        has_value = true;
-        if (!result.ValueBool()) {
-          return TypedValue(false, ctx_->memory);
-        }
-      } else {
-        has_null_elements = true;
-      }
-    }
-    if (!has_value) {
-      return TypedValue(ctx_->memory);
-    }
-    if (has_null_elements) {
-      return TypedValue(false, ctx_->memory);
-    } else {
-      return TypedValue(true, ctx_->memory);
-    }
-  }
-
-  TypedValue Visit(Single &single) override {
-    auto list_value = single.list_expression_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("SINGLE expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &symbol = symbol_table_->at(*single.identifier_);
-    bool has_value = false;
-    bool predicate_satisfied = false;
-    for (const auto &element : list) {
-      frame_->at(symbol) = element;
-      auto result = single.where_->expression_->Accept(*this);
-      if (!result.IsNull() && result.type() != TypedValue::Type::Bool) {
-        throw ExpressionRuntimeException("Predicate of SINGLE must evaluate to boolean, got {}.", result.type());
-      }
-      if (result.type() == TypedValue::Type::Bool) {
-        has_value = true;
-      }
-      if (result.IsNull() || !result.ValueBool()) {
-        continue;
-      }
-      // Return false if more than one element satisfies the predicate.
-      if (predicate_satisfied) {
-        return TypedValue(false, ctx_->memory);
-      } else {
-        predicate_satisfied = true;
-      }
-    }
-    if (!has_value) {
-      return TypedValue(ctx_->memory);
-    } else {
-      return TypedValue(predicate_satisfied, ctx_->memory);
-    }
-  }
-
-  TypedValue Visit(Any &any) override {
-    auto list_value = any.list_expression_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("ANY expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &symbol = symbol_table_->at(*any.identifier_);
-    bool has_value = false;
-    for (const auto &element : list) {
-      frame_->at(symbol) = element;
-      auto result = any.where_->expression_->Accept(*this);
-      if (!result.IsNull() && result.type() != TypedValue::Type::Bool) {
-        throw ExpressionRuntimeException("Predicate of ANY must evaluate to boolean, got {}.", result.type());
-      }
-      if (!result.IsNull()) {
-        has_value = true;
-        if (result.ValueBool()) {
-          return TypedValue(true, ctx_->memory);
-        }
-      }
-    }
-    // Return Null if all elements are Null
-    if (!has_value) {
-      return TypedValue(ctx_->memory);
-    } else {
-      return TypedValue(false, ctx_->memory);
-    }
-  }
-
-  TypedValue Visit(None &none) override {
-    auto list_value = none.list_expression_->Accept(*this);
-    if (list_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (list_value.type() != TypedValue::Type::List) {
-      throw ExpressionRuntimeException("NONE expected a list, got {}.", list_value.type());
-    }
-    const auto &list = list_value.ValueList();
-    const auto &symbol = symbol_table_->at(*none.identifier_);
-    bool has_value = false;
-    for (const auto &element : list) {
-      frame_->at(symbol) = element;
-      auto result = none.where_->expression_->Accept(*this);
-      if (!result.IsNull() && result.type() != TypedValue::Type::Bool) {
-        throw ExpressionRuntimeException("Predicate of NONE must evaluate to boolean, got {}.", result.type());
-      }
-      if (!result.IsNull()) {
-        has_value = true;
-        if (result.ValueBool()) {
-          return TypedValue(false, ctx_->memory);
-        }
-      }
-    }
-    // Return Null if all elements are Null
-    if (!has_value) {
-      return TypedValue(ctx_->memory);
-    } else {
-      return TypedValue(true, ctx_->memory);
-    }
-  }
-
-  TypedValue Visit(ParameterLookup &param_lookup) override {
-    return TypedValue(conv_(ctx_->parameters.AtTokenPosition(param_lookup.token_position_)), ctx_->memory);
-  }
-
-  TypedValue Visit(RegexMatch &regex_match) override {
-    auto target_string_value = regex_match.string_expr_->Accept(*this);
-    auto regex_value = regex_match.regex_->Accept(*this);
-    if (target_string_value.IsNull() || regex_value.IsNull()) {
-      return TypedValue(ctx_->memory);
-    }
-    if (regex_value.type() != TypedValue::Type::String) {
-      throw ExpressionRuntimeException("Regular expression must evaluate to a string, got {}.", regex_value.type());
-    }
-    if (target_string_value.type() != TypedValue::Type::String) {
-      // Instead of error, we return Null which makes it compatible in case we
-      // use indexed lookup which filters out any non-string properties.
-      // Assuming a property lookup is the target_string_value.
-      return TypedValue(ctx_->memory);
-    }
-    const auto &target_string = target_string_value.ValueString();
-    try {
-      std::regex regex(regex_value.ValueString());
-      return TypedValue(std::regex_match(target_string, regex), ctx_->memory);
-    } catch (const std::regex_error &e) {
-      throw ExpressionRuntimeException("Regex error in '{}': {}", regex_value.ValueString(), e.what());
-    }
-  }
-
- private:
-  template <class TRecordAccessor, class TTag = Tag,
-            class TReturnType = std::enable_if_t<std::is_same_v<TTag, QueryEngineTag>, TypedValue>>
-  TReturnType GetProperty(const TRecordAccessor &record_accessor, PropertyIx prop) {
-    auto maybe_prop = record_accessor.GetProperty(prop.name);
-    // Handler non existent property
-    return conv_(maybe_prop);
-  }
-
-  template <class TRecordAccessor, class TTag = Tag,
-            class TReturnType = std::enable_if_t<std::is_same_v<TTag, QueryEngineTag>, TypedValue>>
-  TReturnType GetProperty(const TRecordAccessor &record_accessor, const std::string_view name) {
-    auto maybe_prop = record_accessor.GetProperty(std::string(name));
-    // Handler non existent property
-    return conv_(maybe_prop);
-  }
-
-  template <class TRecordAccessor, class TTag = Tag,
-            class TReturnType = std::enable_if_t<std::is_same_v<TTag, StorageTag>, TypedValue>>
-  TypedValue GetProperty(const TRecordAccessor &record_accessor, PropertyIx prop) {
-    auto maybe_prop = record_accessor.GetProperty(view_, ctx_->properties[prop.ix]);
-    if (maybe_prop.HasError() && maybe_prop.GetError() == Error::NONEXISTENT_OBJECT) {
-      // This is a very nasty and temporary hack in order to make MERGE work.
-      // The old storage had the following logic when returning an `OLD` view:
-      // `return old ? old : new`. That means that if the `OLD` view didn't
-      // exist, it returned the NEW view. With this hack we simulate that
-      // behavior.
-      // TODO (mferencevic, teon.banek): Remove once MERGE is reimplemented.
-      maybe_prop = record_accessor.GetProperty(StorageView::NEW, ctx_->properties[prop.ix]);
-    }
-    if (maybe_prop.HasError()) {
-      switch (maybe_prop.GetError()) {
-        case Error::DELETED_OBJECT:
-          throw ExpressionRuntimeException("Trying to get a property from a deleted object.");
-        case Error::NONEXISTENT_OBJECT:
-          throw ExpressionRuntimeException("Trying to get a property from an object that doesn't exist.");
-        case Error::SERIALIZATION_ERROR:
-        case Error::VERTEX_HAS_EDGES:
-        case Error::PROPERTIES_DISABLED:
-          throw ExpressionRuntimeException("Unexpected error when getting a property.");
-      }
-    }
-    return conv_(*maybe_prop, ctx_->memory);
-  }
-
-  template <class TRecordAccessor, class TTag = Tag,
-            class TReturnType = std::enable_if_t<std::is_same_v<TTag, StorageTag>, TypedValue>>
-  TypedValue GetProperty(const TRecordAccessor &record_accessor, const std::string_view name) {
-    auto maybe_prop = record_accessor.GetProperty(view_, dba_->NameToProperty(name));
-    if (maybe_prop.HasError() && maybe_prop.GetError() == Error::NONEXISTENT_OBJECT) {
-      // This is a very nasty and temporary hack in order to make MERGE work.
-      // The old storage had the following logic when returning an `OLD` view:
-      // `return old ? old : new`. That means that if the `OLD` view didn't
-      // exist, it returned the NEW view. With this hack we simulate that
-      // behavior.
-      // TODO (mferencevic, teon.banek): Remove once MERGE is reimplemented.
-      maybe_prop = record_accessor.GetProperty(view_, dba_->NameToProperty(name));
-    }
-    if (maybe_prop.HasError()) {
-      switch (maybe_prop.GetError()) {
-        case Error::DELETED_OBJECT:
-          throw ExpressionRuntimeException("Trying to get a property from a deleted object.");
-        case Error::NONEXISTENT_OBJECT:
-          throw ExpressionRuntimeException("Trying to get a property from an object that doesn't exist.");
-        case Error::SERIALIZATION_ERROR:
-        case Error::VERTEX_HAS_EDGES:
-        case Error::PROPERTIES_DISABLED:
-          throw ExpressionRuntimeException("Unexpected error when getting a property.");
-      }
-    }
-    return conv_(*maybe_prop, ctx_->memory);
-  }
-
-  LabelId GetLabel(LabelIx label) { return ctx_->labels[label.ix]; }
-
-  Frame<TypedValue> *frame_;
-  const SymbolTable *symbol_table_;
-  const EvaluationContext *ctx_;
-  DbAccessor *dba_;
-  // which switching approach should be used when evaluating
-  StorageView view_;
-  ConvFunctor conv_;
-};
-
-/// A helper function for evaluating an expression that's an int.
-///
-/// @param what - Name of what's getting evaluated. Used for user feedback (via
-///               exception) when the evaluated value is not an int.
-/// @throw ExpressionRuntimeException if expression doesn't evaluate to an int.
-template <typename ExpressionEvaluator>
-int64_t EvaluateInt(ExpressionEvaluator *evaluator, Expression *expr, const std::string &what) {
-  TypedValue value = expr->Accept(*evaluator);
-  try {
-    return value.ValueInt();
-  } catch (TypedValueException &e) {
-    throw ExpressionRuntimeException(what + " must be an int");
-  }
-}
-
-template <typename ExpressionEvaluator>
-std::optional<size_t> EvaluateMemoryLimit(ExpressionEvaluator *eval, Expression *memory_limit, size_t memory_scale) {
-  if (!memory_limit) return std::nullopt;
-  auto limit_value = memory_limit->Accept(*eval);
-  if (!limit_value.IsInt() || limit_value.ValueInt() <= 0)
-    throw ExpressionRuntimeException("Memory limit must be a non-negative integer.");
-  size_t limit = limit_value.ValueInt();
-  if (std::numeric_limits<size_t>::max() / memory_scale < limit)
-    throw ExpressionRuntimeException("Memory limit overflow.");
-  return limit * memory_scale;
-}
-
-}  // namespace memgraph::expr

src/expr/interpret/frame.hpp

@@ -1,45 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <vector>
-
-#include "expr/semantic/symbol_table.hpp"
-#include "utils/logging.hpp"
-#include "utils/memory.hpp"
-#include "utils/pmr/vector.hpp"
-
-namespace memgraph::expr {
-
-template <typename TypedValue>
-class Frame {
- public:
-  /// Create a Frame of given size backed by a utils::NewDeleteResource()
-  explicit Frame(int64_t size) : elems_(size, utils::NewDeleteResource()) { MG_ASSERT(size >= 0); }
-
-  Frame(int64_t size, utils::MemoryResource *memory) : elems_(size, memory) { MG_ASSERT(size >= 0); }
-
-  TypedValue &operator[](const Symbol &symbol) { return elems_[symbol.position()]; }
-  const TypedValue &operator[](const Symbol &symbol) const { return elems_[symbol.position()]; }
-
-  TypedValue &at(const Symbol &symbol) { return elems_.at(symbol.position()); }
-  const TypedValue &at(const Symbol &symbol) const { return elems_.at(symbol.position()); }
-
-  auto &elems() { return elems_; }
-
-  utils::MemoryResource *GetMemoryResource() const { return elems_.get_allocator().GetMemoryResource(); }
-
- private:
-  utils::pmr::vector<TypedValue> elems_;
-};
-
-}  // namespace memgraph::expr

src/expr/parsing.cpp

@@ -1,184 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "expr/parsing.hpp"
-
-#include <cctype>
-#include <codecvt>
-#include <locale>
-#include <stdexcept>
-
-#include "expr/exceptions.hpp"
-#include "utils/logging.hpp"
-#include "utils/string.hpp"
-
-namespace memgraph::expr {
-
-int64_t ParseIntegerLiteral(const std::string &s) {
-  try {
-    // Not really correct since long long can have a bigger range than int64_t.
-    return static_cast<int64_t>(std::stoll(s, 0, 0));
-  } catch (const std::out_of_range &) {
-    throw SemanticException("Integer literal exceeds 64 bits.");
-  }
-}
-
-std::string ParseStringLiteral(const std::string &s) {
-  // These functions is declared as lambda since its semantics is highly
-  // specific for this conxtext and shouldn't be used elsewhere.
-  auto EncodeEscapedUnicodeCodepointUtf32 = [](const std::string &s, int &i) {
-    const int kLongUnicodeLength = 8;
-    int j = i + 1;
-    while (j < static_cast<int>(s.size()) - 1 && j < i + kLongUnicodeLength + 1 && isxdigit(s[j])) {
-      ++j;
-    }
-    if (j - i == kLongUnicodeLength + 1) {
-      char32_t t = stoi(s.substr(i + 1, kLongUnicodeLength), 0, 16);
-      i += kLongUnicodeLength;
-      std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> converter;
-      return converter.to_bytes(t);
-    }
-    throw SyntaxException(
-        "Expected 8 hex digits as unicode codepoint started with \\U. "
-        "Use \\u for 4 hex digits format.");
-  };
-  auto EncodeEscapedUnicodeCodepointUtf16 = [](const std::string &s, int &i) {
-    const int kShortUnicodeLength = 4;
-    int j = i + 1;
-    while (j < static_cast<int>(s.size()) - 1 && j < i + kShortUnicodeLength + 1 && isxdigit(s[j])) {
-      ++j;
-    }
-    if (j - i >= kShortUnicodeLength + 1) {
-      char16_t t = stoi(s.substr(i + 1, kShortUnicodeLength), 0, 16);
-      if (t >= 0xD800 && t <= 0xDBFF) {
-        // t is high surrogate pair. Expect one more utf16 codepoint.
-        j = i + kShortUnicodeLength + 1;
-        if (j >= static_cast<int>(s.size()) - 1 || s[j] != '\\') {
-          throw SemanticException("Invalid UTF codepoint.");
-        }
-        ++j;
-        if (j >= static_cast<int>(s.size()) - 1 || (s[j] != 'u' && s[j] != 'U')) {
-          throw SemanticException("Invalid UTF codepoint.");
-        }
-        ++j;
-        int k = j;
-        while (k < static_cast<int>(s.size()) - 1 && k < j + kShortUnicodeLength && isxdigit(s[k])) {
-          ++k;
-        }
-        if (k != j + kShortUnicodeLength) {
-          throw SemanticException("Invalid UTF codepoint.");
-        }
-        char16_t surrogates[3] = {t, static_cast<char16_t>(stoi(s.substr(j, kShortUnicodeLength), 0, 16)), 0};
-        i += kShortUnicodeLength + 2 + kShortUnicodeLength;
-        std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> converter;
-        return converter.to_bytes(surrogates);
-      } else {
-        i += kShortUnicodeLength;
-        std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> converter;
-        return converter.to_bytes(t);
-      }
-    }
-    throw SyntaxException(
-        "Expected 4 hex digits as unicode codepoint started with \\u. "
-        "Use \\U for 8 hex digits format.");
-  };
-
-  std::string unescaped;
-  bool escape = false;
-
-  // First and last char is quote, we don't need to look at them.
-  for (int i = 1; i < static_cast<int>(s.size()) - 1; ++i) {
-    if (escape) {
-      switch (s[i]) {
-        case '\\':
-          unescaped += '\\';
-          break;
-        case '\'':
-          unescaped += '\'';
-          break;
-        case '"':
-          unescaped += '"';
-          break;
-        case 'B':
-        case 'b':
-          unescaped += '\b';
-          break;
-        case 'F':
-        case 'f':
-          unescaped += '\f';
-          break;
-        case 'N':
-        case 'n':
-          unescaped += '\n';
-          break;
-        case 'R':
-        case 'r':
-          unescaped += '\r';
-          break;
-        case 'T':
-        case 't':
-          unescaped += '\t';
-          break;
-        case 'U':
-          try {
-            unescaped += EncodeEscapedUnicodeCodepointUtf32(s, i);
-          } catch (const std::range_error &) {
-            throw SemanticException("Invalid UTF codepoint.");
-          }
-          break;
-        case 'u':
-          try {
-            unescaped += EncodeEscapedUnicodeCodepointUtf16(s, i);
-          } catch (const std::range_error &) {
-            throw SemanticException("Invalid UTF codepoint.");
-          }
-          break;
-        default:
-          // This should never happen, except grammar changes and we don't
-          // notice change in this production.
-          DLOG_FATAL("can't happen");
-          throw std::exception();
-      }
-      escape = false;
-    } else if (s[i] == '\\') {
-      escape = true;
-    } else {
-      unescaped += s[i];
-    }
-  }
-  return unescaped;
-}
-
-double ParseDoubleLiteral(const std::string &s) {
-  try {
-    return utils::ParseDouble(s);
-  } catch (const utils::BasicException &) {
-    throw SemanticException("Couldn't parse string to double.");
-  }
-}
-
-std::string ParseParameter(const std::string &s) {
-  DMG_ASSERT(s[0] == '$', "Invalid string passed as parameter name");
-  if (s[1] != '`') return s.substr(1);
-  // If parameter name is escaped symbolic name then symbolic name should be
-  // unescaped and leading and trailing backquote should be removed.
-  DMG_ASSERT(s.size() > 3U && s.back() == '`', "Invalid string passed as parameter name");
-  std::string out;
-  for (int i = 2; i < static_cast<int>(s.size()) - 1; ++i) {
-    if (s[i] == '`') {
-      ++i;
-    }
-    out.push_back(s[i]);
-  }
-  return out;
-}
-
-}  // namespace memgraph::expr

src/expr/parsing.hpp

@@ -1,27 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-/// @file
-#pragma once
-
-#include <cstdint>
-#include <string>
-
-namespace memgraph::expr {
-
-// These are the functions for parsing literals and parameter names from
-// opencypher query.
-int64_t ParseIntegerLiteral(const std::string &s);
-std::string ParseStringLiteral(const std::string &s);
-double ParseDoubleLiteral(const std::string &s);
-std::string ParseParameter(const std::string &s);
-
-}  // namespace memgraph::expr

src/expr/semantic/symbol.lcp

@@ -1,87 +0,0 @@
-;; Copyright 2022 Memgraph Ltd.
-;;
-;; Use of this software is governed by the Business Source License
-;; included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-;; License, and you may not use this file except in compliance with the Business Source License.
-;;
-;; As of the Change Date specified in that file, in accordance with
-;; the Business Source License, use of this software will be governed
-;; by the Apache License, Version 2.0, included in the file
-;; licenses/APL.txt.
-
-#>cpp
-#pragma once
-
-#include <string>
-
-#include "utils/typeinfo.hpp"
-cpp<#
-
-(lcp:namespace memgraph)
-(lcp:namespace expr)
-
-(lcp:define-class symbol ()
-  ((name "std::string" :scope :public)
-   (position :int64_t :scope :public)
-   (user-declared :bool :initval "true" :scope :public)
-   (type "Type" :initval "Type::ANY" :scope :public)
-   (token-position :int64_t :initval "-1" :scope :public))
-  (:public
-    ;; This is similar to TypedValue::Type, but this has `Any` type.
-    ;; TODO: Make a better Type structure which can store a generic List.
-    (lcp:define-enum type (any vertex edge path number edge-list)
-      (:serialize))
-    #>cpp
-    // TODO: Generate enum to string conversion from LCP. Note, that this is
-    // displayed to the end user, so we may want to have a pretty name of each
-    // value.
-    static std::string TypeToString(Type type) {
-      const char *enum_string[] = {"Any",  "Vertex", "Edge",
-                                   "Path", "Number", "EdgeList"};
-      return enum_string[static_cast<int>(type)];
-    }
-
-    Symbol() {}
-    Symbol(const std::string &name, int position, bool user_declared,
-           Type type = Type::ANY, int token_position = -1)
-        : name_(name),
-          position_(position),
-          user_declared_(user_declared),
-          type_(type),
-          token_position_(token_position) {}
-
-    bool operator==(const Symbol &other) const {
-      return position_ == other.position_ && name_ == other.name_ &&
-             type_ == other.type_;
-    }
-    bool operator!=(const Symbol &other) const { return !operator==(other); }
-
-    // TODO: Remove these since members are public
-    const auto &name() const { return name_; }
-    int position() const { return position_; }
-    Type type() const { return type_; }
-    bool user_declared() const { return user_declared_; }
-    int token_position() const { return token_position_; }
-    cpp<#)
-  (:serialize (:slk)))
-
-(lcp:pop-namespace) ;; expr
-(lcp:pop-namespace) ;; memgraph
-
-#>cpp
-namespace std {
-
-template <>
-struct hash<memgraph::expr::Symbol> {
-  size_t operator()(const memgraph::expr::Symbol &symbol) const {
-    size_t prime = 265443599u;
-    size_t hash = std::hash<int>{}(symbol.position());
-    hash ^= prime * std::hash<std::string>{}(symbol.name());
-    hash ^= prime * std::hash<int>{}(static_cast<int>(symbol.type()));
-    return hash;
-  }
-};
-
-}  // namespace std
-
-cpp<#

src/expr/semantic/symbol_generator.hpp

@@ -1,712 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-// Copyright 2017 Memgraph
-//
-// Created by Teon Banek on 11-03-2017
-
-#pragma once
-
-#include <algorithm>
-#include <optional>
-#include <ranges>
-#include <unordered_map>
-#include <unordered_set>
-#include <variant>
-#include <vector>
-
-#include "expr/ast.hpp"
-#include "expr/ast/ast_visitor.hpp"
-#include "expr/exceptions.hpp"
-#include "expr/semantic/symbol_table.hpp"
-
-namespace memgraph::expr {
-namespace detail {
-inline std::unordered_map<std::string, Identifier *> GeneratePredefinedIdentifierMap(
-    const std::vector<Identifier *> &predefined_identifiers) {
-  std::unordered_map<std::string, Identifier *> identifier_map;
-  for (const auto &identifier : predefined_identifiers) {
-    identifier_map.emplace(identifier->name_, identifier);
-  }
-
-  return identifier_map;
-}
-}  // namespace detail
-
-/// Visits the AST and generates symbols for variables.
-///
-/// During the process of symbol generation, simple semantic checks are
-/// performed. Such as, redeclaring a variable or conflicting expectations of
-/// variable types.
-class SymbolGenerator : public HierarchicalTreeVisitor {
- public:
-  explicit SymbolGenerator(SymbolTable *symbol_table, const std::vector<Identifier *> &predefined_identifiers)
-      : symbol_table_(symbol_table),
-        predefined_identifiers_{detail::GeneratePredefinedIdentifierMap(predefined_identifiers)},
-        scopes_(1, Scope()) {}
-
-  using HierarchicalTreeVisitor::PostVisit;
-  using HierarchicalTreeVisitor::PreVisit;
-  using HierarchicalTreeVisitor::Visit;
-  using typename HierarchicalTreeVisitor::ReturnType;
-
-  // Query
-  bool PreVisit(SingleQuery & /*unused*/) override {
-    prev_return_names_ = curr_return_names_;
-    curr_return_names_.clear();
-    return true;
-  }
-
-  // Union
-  bool PreVisit(CypherUnion & /*unused*/) override {
-    scopes_.back() = Scope();
-    return true;
-  }
-
-  bool PostVisit(CypherUnion &cypher_union) override {
-    if (prev_return_names_ != curr_return_names_) {
-      throw SemanticException("All subqueries in an UNION must have the same column names.");
-    }
-
-    // create new symbols for the result of the union
-    for (const auto &name : curr_return_names_) {
-      auto symbol = CreateSymbol(name, false);
-      cypher_union.union_symbols_.push_back(symbol);
-    }
-
-    return true;
-  }
-
-  // Clauses
-  bool PreVisit(Create & /*unused*/) override {
-    scopes_.back().in_create = true;
-    return true;
-  }
-
-  bool PostVisit(Create & /*unused*/) override {
-    scopes_.back().in_create = false;
-    return true;
-  }
-
-  bool PreVisit(CallProcedure &call_proc) override {
-    for (auto *expr : call_proc.arguments_) {
-      expr->Accept(*this);
-    }
-    return false;
-  }
-
-  bool PostVisit(CallProcedure &call_proc) override {
-    for (auto *ident : call_proc.result_identifiers_) {
-      if (HasSymbolLocalScope(ident->name_)) {
-        throw RedeclareVariableError(ident->name_);
-      }
-      ident->MapTo(CreateSymbol(ident->name_, true));
-    }
-    return true;
-  }
-
-  bool PreVisit(LoadCsv & /*unused*/) override { return false; }
-
-  bool PostVisit(LoadCsv &load_csv) override {
-    if (HasSymbolLocalScope(load_csv.row_var_->name_)) {
-      throw RedeclareVariableError(load_csv.row_var_->name_);
-    }
-    load_csv.row_var_->MapTo(CreateSymbol(load_csv.row_var_->name_, true));
-    return true;
-  }
-
-  bool PreVisit(Return &ret) override {
-    auto &scope = scopes_.back();
-    scope.in_return = true;
-    VisitReturnBody(ret.body_);
-    scope.in_return = false;
-    return false;  // We handled the traversal ourselves.
-  }
-
-  bool PostVisit(Return & /*unused*/) override {
-    for (const auto &name_symbol : scopes_.back().symbols) curr_return_names_.insert(name_symbol.first);
-    return true;
-  }
-
-  bool PreVisit(With &with) override {
-    auto &scope = scopes_.back();
-    scope.in_with = true;
-    VisitReturnBody(with.body_, with.where_);
-    scope.in_with = false;
-    return false;  // We handled the traversal ourselves.
-  }
-
-  bool PreVisit(Where & /*unused*/) override {
-    scopes_.back().in_where = true;
-    return true;
-  }
-
-  bool PostVisit(Where & /*unused*/) override {
-    scopes_.back().in_where = false;
-    return true;
-  }
-
-  bool PreVisit(Merge & /*unused*/) override {
-    scopes_.back().in_merge = true;
-    return true;
-  }
-
-  bool PostVisit(Merge & /*unused*/) override {
-    scopes_.back().in_merge = false;
-    return true;
-  }
-
-  bool PostVisit(Unwind &unwind) override {
-    const auto &name = unwind.named_expression_->name_;
-    if (HasSymbolLocalScope(name)) {
-      throw RedeclareVariableError(name);
-    }
-    unwind.named_expression_->MapTo(CreateSymbol(name, true));
-    return true;
-  }
-
-  bool PreVisit(Match & /*unused*/) override {
-    scopes_.back().in_match = true;
-    return true;
-  }
-
-  bool PostVisit(Match & /*unused*/) override {
-    auto &scope = scopes_.back();
-    scope.in_match = false;
-    // Check variables in property maps after visiting Match, so that they can
-    // reference symbols out of bind order.
-    for (auto &ident : scope.identifiers_in_match) {
-      if (!HasSymbolLocalScope(ident->name_) && !ConsumePredefinedIdentifier(ident->name_))
-        throw UnboundVariableError(ident->name_);
-      ident->MapTo(scope.symbols[ident->name_]);
-    }
-    scope.identifiers_in_match.clear();
-    return true;
-  }
-
-  bool PreVisit(Foreach &for_each) override {
-    const auto &name = for_each.named_expression_->name_;
-    scopes_.emplace_back(Scope());
-    scopes_.back().in_foreach = true;
-    for_each.named_expression_->MapTo(
-        CreateSymbol(name, true, Symbol::Type::ANY, for_each.named_expression_->token_position_));
-    return true;
-  }
-
-  bool PostVisit(Foreach & /*unused*/) override {
-    scopes_.pop_back();
-    return true;
-  }
-
-  // Expressions
-  ReturnType Visit(Identifier &ident) override {
-    auto &scope = scopes_.back();
-    if (scope.in_skip || scope.in_limit) {
-      throw SemanticException("Variables are not allowed in {}.", scope.in_skip ? "SKIP" : "LIMIT");
-    }
-    Symbol symbol;
-    if (scope.in_pattern && !(scope.in_node_atom || scope.visiting_edge)) {
-      // If we are in the pattern, and outside of a node or an edge, the
-      // identifier is the pattern name.
-      symbol = GetOrCreateSymbolLocalScope(ident.name_, ident.user_declared_, Symbol::Type::PATH);
-    } else if (scope.in_pattern && scope.in_pattern_atom_identifier) {
-      //  Patterns used to create nodes and edges cannot redeclare already
-      //  established bindings. Declaration only happens in single node
-      //  patterns and in edge patterns. OpenCypher example,
-      //  `MATCH (n) CREATE (n)` should throw an error that `n` is already
-      //  declared. While `MATCH (n) CREATE (n) -[:R]-> (n)` is allowed,
-      //  since `n` now references the bound node instead of declaring it.
-      if ((scope.in_create_node || scope.in_create_edge) && HasSymbolLocalScope(ident.name_)) {
-        throw RedeclareVariableError(ident.name_);
-      }
-      auto type = Symbol::Type::VERTEX;
-      if (scope.visiting_edge) {
-        // Edge referencing is not allowed (like in Neo4j):
-        // `MATCH (n) - [r] -> (n) - [r] -> (n) RETURN r` is not allowed.
-        if (HasSymbolLocalScope(ident.name_)) {
-          throw RedeclareVariableError(ident.name_);
-        }
-        type = scope.visiting_edge->IsVariable() ? Symbol::Type::EDGE_LIST : Symbol::Type::EDGE;
-      }
-      symbol = GetOrCreateSymbolLocalScope(ident.name_, ident.user_declared_, type);
-    } else if (scope.in_pattern && !scope.in_pattern_atom_identifier && scope.in_match) {
-      if (scope.in_edge_range && scope.visiting_edge->identifier_->name_ == ident.name_) {
-        // Prevent variable path bounds to reference the identifier which is bound
-        // by the variable path itself.
-        throw UnboundVariableError(ident.name_);
-      }
-      // Variables in property maps or bounds of variable length path during MATCH
-      // can reference symbols bound later in the same MATCH. We collect them
-      // here, so that they can be checked after visiting Match.
-      scope.identifiers_in_match.emplace_back(&ident);
-    } else {
-      // Everything else references a bound symbol.
-      if (!HasSymbol(ident.name_) && !ConsumePredefinedIdentifier(ident.name_)) throw UnboundVariableError(ident.name_);
-      symbol = GetOrCreateSymbol(ident.name_, ident.user_declared_, Symbol::Type::ANY);
-    }
-    ident.MapTo(symbol);
-    return true;
-  }
-
-  ReturnType Visit(PrimitiveLiteral & /*unused*/) override { return true; }
-
-  ReturnType Visit(ParameterLookup & /*unused*/) override { return true; }
-
-  bool PreVisit(Aggregation &aggr) override {
-    auto &scope = scopes_.back();
-    // Check if the aggregation can be used in this context. This check should
-    // probably move to a separate phase, which checks if the query is well
-    // formed.
-    if ((!scope.in_return && !scope.in_with) || scope.in_order_by || scope.in_skip || scope.in_limit ||
-        scope.in_where) {
-      throw SemanticException("Aggregation functions are only allowed in WITH and RETURN.");
-    }
-    if (scope.in_aggregation) {
-      throw SemanticException(
-          "Using aggregation functions inside aggregation functions is not "
-          "allowed.");
-    }
-    if (scope.num_if_operators) {
-      // Neo allows aggregations here and produces very interesting behaviors.
-      // To simplify implementation at this moment we decided to completely
-      // disallow aggregations inside of the CASE.
-      // However, in some cases aggregation makes perfect sense, for example:
-      //    CASE count(n) WHEN 10 THEN "YES" ELSE "NO" END.
-      // TODO: Rethink of allowing aggregations in some parts of the CASE
-      // construct.
-      throw SemanticException("Using aggregation functions inside of CASE is not allowed.");
-    }
-    // Create a virtual symbol for aggregation result.
-    // Currently, we only have aggregation operators which return numbers.
-    auto aggr_name = Aggregation::OpToString(aggr.op_) + std::to_string(aggr.symbol_pos_);
-    aggr.MapTo(CreateSymbol(aggr_name, false, Symbol::Type::NUMBER));
-    scope.in_aggregation = true;
-    scope.has_aggregation = true;
-    return true;
-  }
-
-  bool PostVisit(Aggregation & /*unused*/) override {
-    scopes_.back().in_aggregation = false;
-    return true;
-  }
-
-  bool PreVisit(IfOperator & /*unused*/) override {
-    ++scopes_.back().num_if_operators;
-    return true;
-  }
-
-  bool PostVisit(IfOperator & /*unused*/) override {
-    --scopes_.back().num_if_operators;
-    return true;
-  }
-
-  bool PreVisit(All &all) override {
-    all.list_expression_->Accept(*this);
-    VisitWithIdentifiers(all.where_->expression_, {all.identifier_});
-    return false;
-  }
-
-  bool PreVisit(Single &single) override {
-    single.list_expression_->Accept(*this);
-    VisitWithIdentifiers(single.where_->expression_, {single.identifier_});
-    return false;
-  }
-
-  bool PreVisit(Any &any) override {
-    any.list_expression_->Accept(*this);
-    VisitWithIdentifiers(any.where_->expression_, {any.identifier_});
-    return false;
-  }
-
-  bool PreVisit(None &none) override {
-    none.list_expression_->Accept(*this);
-    VisitWithIdentifiers(none.where_->expression_, {none.identifier_});
-    return false;
-  }
-
-  bool PreVisit(Reduce &reduce) override {
-    reduce.initializer_->Accept(*this);
-    reduce.list_->Accept(*this);
-    VisitWithIdentifiers(reduce.expression_, {reduce.accumulator_, reduce.identifier_});
-    return false;
-  }
-
-  bool PreVisit(Extract &extract) override {
-    extract.list_->Accept(*this);
-    VisitWithIdentifiers(extract.expression_, {extract.identifier_});
-    return false;
-  }
-
-  // Pattern and its subparts.
-  bool PreVisit(Pattern &pattern) override {
-    auto &scope = scopes_.back();
-    scope.in_pattern = true;
-    if ((scope.in_create || scope.in_merge) && pattern.atoms_.size() == 1U) {
-      MG_ASSERT(utils::IsSubtype(*pattern.atoms_[0], NodeAtom::kType), "Expected a single NodeAtom in Pattern");
-      scope.in_create_node = true;
-    }
-    return true;
-  }
-
-  bool PostVisit(Pattern & /*unused*/) override {
-    auto &scope = scopes_.back();
-    scope.in_pattern = false;
-    scope.in_create_node = false;
-    return true;
-  }
-
-  bool PreVisit(NodeAtom &node_atom) override {
-    auto &scope = scopes_.back();
-    auto check_node_semantic = [&node_atom, &scope, this](const bool props_or_labels) {
-      const auto &node_name = node_atom.identifier_->name_;
-      if ((scope.in_create || scope.in_merge) && props_or_labels && HasSymbolLocalScope(node_name)) {
-        throw SemanticException("Cannot create node '" + node_name +
-                                "' with labels or properties, because it is already declared.");
-      }
-      scope.in_pattern_atom_identifier = true;
-      node_atom.identifier_->Accept(*this);
-      scope.in_pattern_atom_identifier = false;
-    };
-
-    scope.in_node_atom = true;
-    if (auto *properties = std::get_if<std::unordered_map<PropertyIx, Expression *>>(&node_atom.properties_)) {
-      bool props_or_labels = !properties->empty() || !node_atom.labels_.empty();
-
-      check_node_semantic(props_or_labels);
-      for (auto kv : *properties) {
-        kv.second->Accept(*this);
-      }
-
-      return false;
-    }
-    auto &properties_parameter = std::get<ParameterLookup *>(node_atom.properties_);
-    bool props_or_labels = !properties_parameter || !node_atom.labels_.empty();
-
-    check_node_semantic(props_or_labels);
-    properties_parameter->Accept(*this);
-    return false;
-  }
-
-  bool PostVisit(NodeAtom & /*unused*/) override {
-    scopes_.back().in_node_atom = false;
-    return true;
-  }
-
-  bool PreVisit(EdgeAtom &edge_atom) override {
-    auto &scope = scopes_.back();
-    scope.visiting_edge = &edge_atom;
-    if (scope.in_create || scope.in_merge) {
-      scope.in_create_edge = true;
-      if (edge_atom.edge_types_.size() != 1U) {
-        throw SemanticException(
-            "A single relationship type must be specified "
-            "when creating an edge.");
-      }
-      if (scope.in_create &&  // Merge allows bidirectionality
-          edge_atom.direction_ == EdgeAtom::Direction::BOTH) {
-        throw SemanticException(
-            "Bidirectional relationship are not supported "
-            "when creating an edge");
-      }
-      if (edge_atom.IsVariable()) {
-        throw SemanticException(
-            "Variable length relationships are not supported when creating an "
-            "edge.");
-      }
-    }
-    if (auto *properties = std::get_if<std::unordered_map<PropertyIx, Expression *>>(&edge_atom.properties_)) {
-      for (auto kv : *properties) {
-        kv.second->Accept(*this);
-      }
-    } else {
-      std::get<ParameterLookup *>(edge_atom.properties_)->Accept(*this);
-    }
-    if (edge_atom.IsVariable()) {
-      scope.in_edge_range = true;
-      if (edge_atom.lower_bound_) {
-        edge_atom.lower_bound_->Accept(*this);
-      }
-      if (edge_atom.upper_bound_) {
-        edge_atom.upper_bound_->Accept(*this);
-      }
-      scope.in_edge_range = false;
-      scope.in_pattern = false;
-      if (edge_atom.filter_lambda_.expression) {
-        VisitWithIdentifiers(edge_atom.filter_lambda_.expression,
-                             {edge_atom.filter_lambda_.inner_edge, edge_atom.filter_lambda_.inner_node});
-      } else {
-        // Create inner symbols, but don't bind them in scope, since they are to
-        // be used in the missing filter expression.
-        auto *inner_edge = edge_atom.filter_lambda_.inner_edge;
-        inner_edge->MapTo(
-            symbol_table_->CreateSymbol(inner_edge->name_, inner_edge->user_declared_, Symbol::Type::EDGE));
-        auto *inner_node = edge_atom.filter_lambda_.inner_node;
-        inner_node->MapTo(
-            symbol_table_->CreateSymbol(inner_node->name_, inner_node->user_declared_, Symbol::Type::VERTEX));
-      }
-      if (edge_atom.weight_lambda_.expression) {
-        VisitWithIdentifiers(edge_atom.weight_lambda_.expression,
-                             {edge_atom.weight_lambda_.inner_edge, edge_atom.weight_lambda_.inner_node});
-      }
-      scope.in_pattern = true;
-    }
-    scope.in_pattern_atom_identifier = true;
-    edge_atom.identifier_->Accept(*this);
-    scope.in_pattern_atom_identifier = false;
-    if (edge_atom.total_weight_) {
-      if (HasSymbolLocalScope(edge_atom.total_weight_->name_)) {
-        throw RedeclareVariableError(edge_atom.total_weight_->name_);
-      }
-      edge_atom.total_weight_->MapTo(GetOrCreateSymbolLocalScope(
-          edge_atom.total_weight_->name_, edge_atom.total_weight_->user_declared_, Symbol::Type::NUMBER));
-    }
-    return false;
-  }
-
-  bool PostVisit(EdgeAtom & /*unused*/) override {
-    auto &scope = scopes_.back();
-    scope.visiting_edge = nullptr;
-    scope.in_create_edge = false;
-    return true;
-  }
-
- private:
-  // Scope stores the state of where we are when visiting the AST and a map of
-  // names to symbols.
-  struct Scope {
-    bool in_pattern{false};
-    bool in_merge{false};
-    bool in_create{false};
-    // in_create_node is true if we are creating or merging *only* a node.
-    // Therefore, it is *not* equivalent to (in_create || in_merge) &&
-    // in_node_atom.
-    bool in_create_node{false};
-    // True if creating an edge;
-    // shortcut for (in_create || in_merge) && visiting_edge.
-    bool in_create_edge{false};
-    bool in_node_atom{false};
-    EdgeAtom *visiting_edge{nullptr};
-    bool in_aggregation{false};
-    bool in_return{false};
-    bool in_with{false};
-    bool in_skip{false};
-    bool in_limit{false};
-    bool in_order_by{false};
-    bool in_where{false};
-    bool in_match{false};
-    bool in_foreach{false};
-    // True when visiting a pattern atom (node or edge) identifier, which can be
-    // reused or created in the pattern itself.
-    bool in_pattern_atom_identifier{false};
-    // True when visiting range bounds of a variable path.
-    bool in_edge_range{false};
-    // True if the return/with contains an aggregation in any named expression.
-    bool has_aggregation{false};
-    // Map from variable names to symbols.
-    std::map<std::string, Symbol> symbols;
-    // Identifiers found in property maps of patterns or as variable length path
-    // bounds in a single Match clause. They need to be checked after visiting
-    // Match. Identifiers created by naming vertices, edges and paths are *not*
-    // stored in here.
-    std::vector<Identifier *> identifiers_in_match;
-    // Number of nested IfOperators.
-    int num_if_operators{0};
-  };
-
-  inline static std::optional<Symbol> FindSymbolInScope(const std::string &name, const Scope &scope,
-                                                        Symbol::Type type) {
-    if (auto it = scope.symbols.find(name); it != scope.symbols.end()) {
-      const auto &symbol = it->second;
-      // Unless we have `ANY` type, check that types match.
-      if (type != Symbol::Type::ANY && symbol.type() != Symbol::Type::ANY && type != symbol.type()) {
-        throw TypeMismatchError(name, Symbol::TypeToString(symbol.type()), Symbol::TypeToString(type));
-      }
-      return symbol;
-    }
-    return std::nullopt;
-  }
-
-  bool HasSymbol(const std::string &name) const {
-    return std::ranges::any_of(scopes_, [&name](const auto &scope) { return scope.symbols.contains(name); });
-  }
-
-  bool HasSymbolLocalScope(const std::string &name) const { return scopes_.back().symbols.contains(name); }
-
-  // @return true if it added a predefined identifier with that name
-  bool ConsumePredefinedIdentifier(const std::string &name) {
-    auto it = predefined_identifiers_.find(name);
-
-    if (it == predefined_identifiers_.end()) {
-      return false;
-    }
-
-    // we can only use the predefined identifier in a single scope so we remove it after creating
-    // a symbol for it
-    auto &identifier = it->second;
-    MG_ASSERT(!identifier->user_declared_, "Predefined symbols cannot be user declared!");
-    identifier->MapTo(CreateSymbol(identifier->name_, identifier->user_declared_));
-    predefined_identifiers_.erase(it);
-    return true;
-  }
-
-  // Returns a freshly generated symbol. Previous mapping of the same name to a
-  // different symbol is replaced with the new one.
-  Symbol CreateSymbol(const std::string &name, bool user_declared, Symbol::Type type = Symbol::Type::ANY,
-                      int token_position = -1) {
-    auto symbol = symbol_table_->CreateSymbol(name, user_declared, type, token_position);
-    scopes_.back().symbols[name] = symbol;
-    return symbol;
-  }
-
-  Symbol GetOrCreateSymbol(const std::string &name, bool user_declared, Symbol::Type type = Symbol::Type::ANY) {
-    // NOLINTNEXTLINE
-    for (auto scope = scopes_.rbegin(); scope != scopes_.rend(); ++scope) {
-      if (auto maybe_symbol = FindSymbolInScope(name, *scope, type); maybe_symbol) {
-        return *maybe_symbol;
-      }
-    }
-    return CreateSymbol(name, user_declared, type);
-  }
-
-  // Returns the symbol by name. If the mapping already exists, checks if the
-  // types match. Otherwise, returns a new symbol.
-  Symbol GetOrCreateSymbolLocalScope(const std::string &name, bool user_declared,
-                                     Symbol::Type type = Symbol::Type::ANY) {
-    auto &scope = scopes_.back();
-    if (auto maybe_symbol = FindSymbolInScope(name, scope, type); maybe_symbol) {
-      return *maybe_symbol;
-    }
-    return CreateSymbol(name, user_declared, type);
-  }
-
-  void VisitReturnBody(ReturnBody &body, Where *where = nullptr) {
-    auto &scope = scopes_.back();
-    for (auto &expr : body.named_expressions) {
-      expr->Accept(*this);
-    }
-    std::vector<Symbol> user_symbols;
-    if (body.all_identifiers) {
-      // Carry over user symbols because '*' appeared.
-      for (const auto &sym_pair : scope.symbols) {
-        if (!sym_pair.second.user_declared()) {
-          continue;
-        }
-        user_symbols.emplace_back(sym_pair.second);
-      }
-      if (user_symbols.empty()) {
-        throw SemanticException("There are no variables in scope to use for '*'.");
-      }
-    }
-    // WITH/RETURN clause removes declarations of all the previous variables and
-    // declares only those established through named expressions. New declarations
-    // must not be visible inside named expressions themselves.
-    bool removed_old_names = false;
-    if ((!where && body.order_by.empty()) || scope.has_aggregation) {
-      // WHERE and ORDER BY need to see both the old and new symbols, unless we
-      // have an aggregation. Therefore, we can clear the symbols immediately if
-      // there is neither ORDER BY nor WHERE, or we have an aggregation.
-      scope.symbols.clear();
-      removed_old_names = true;
-    }
-    // Create symbols for named expressions.
-    std::unordered_set<std::string> new_names;
-    for (const auto &user_sym : user_symbols) {
-      new_names.insert(user_sym.name());
-      scope.symbols[user_sym.name()] = user_sym;
-    }
-    for (auto &named_expr : body.named_expressions) {
-      const auto &name = named_expr->name_;
-      if (!new_names.insert(name).second) {
-        throw SemanticException("Multiple results with the same name '{}' are not allowed.", name);
-      }
-      // An improvement would be to infer the type of the expression, so that the
-      // new symbol would have a more specific type.
-      named_expr->MapTo(CreateSymbol(name, true, Symbol::Type::ANY, named_expr->token_position_));
-    }
-    scope.in_order_by = true;
-    for (const auto &order_pair : body.order_by) {
-      order_pair.expression->Accept(*this);
-    }
-    scope.in_order_by = false;
-    if (body.skip) {
-      scope.in_skip = true;
-      body.skip->Accept(*this);
-      scope.in_skip = false;
-    }
-    if (body.limit) {
-      scope.in_limit = true;
-      body.limit->Accept(*this);
-      scope.in_limit = false;
-    }
-    if (where) where->Accept(*this);
-    if (!removed_old_names) {
-      // We have an ORDER BY or WHERE, but no aggregation, which means we didn't
-      // clear the old symbols, so do it now. We cannot just call clear, because
-      // we've added new symbols.
-      for (auto sym_it = scope.symbols.begin(); sym_it != scope.symbols.end();) {
-        if (new_names.find(sym_it->first) == new_names.end()) {
-          sym_it = scope.symbols.erase(sym_it);
-        } else {
-          sym_it++;
-        }
-      }
-    }
-    scopes_.back().has_aggregation = false;
-  }
-
-  void VisitWithIdentifiers(Expression *expr, const std::vector<Identifier *> &identifiers) {
-    auto &scope = scopes_.back();
-    std::vector<std::pair<std::optional<Symbol>, Identifier *>> prev_symbols;
-    // Collect previous symbols if they exist.
-    for (const auto &identifier : identifiers) {
-      std::optional<Symbol> prev_symbol;
-      auto prev_symbol_it = scope.symbols.find(identifier->name_);
-      if (prev_symbol_it != scope.symbols.end()) {
-        prev_symbol = prev_symbol_it->second;
-      }
-      identifier->MapTo(CreateSymbol(identifier->name_, identifier->user_declared_));
-      prev_symbols.emplace_back(prev_symbol, identifier);
-    }
-    // Visit the expression with the new symbols bound.
-    expr->Accept(*this);
-    // Restore back to previous symbols.
-    for (const auto &prev : prev_symbols) {
-      const auto &prev_symbol = prev.first;
-      const auto &identifier = prev.second;
-      if (prev_symbol) {
-        scope.symbols[identifier->name_] = *prev_symbol;
-      } else {
-        scope.symbols.erase(identifier->name_);
-      }
-    }
-  }
-
-  SymbolTable *symbol_table_;
-
-  // Identifiers which are injected from outside the query. Each identifier
-  // is mapped by its name.
-  std::unordered_map<std::string, Identifier *> predefined_identifiers_;
-  std::vector<Scope> scopes_;
-  std::unordered_set<std::string> prev_return_names_;
-  std::unordered_set<std::string> curr_return_names_;
-};
-
-inline SymbolTable MakeSymbolTable(CypherQuery *query, const std::vector<Identifier *> &predefined_identifiers = {}) {
-  SymbolTable symbol_table;
-  SymbolGenerator symbol_generator(&symbol_table, predefined_identifiers);
-  query->single_query_->Accept(symbol_generator);
-  for (auto *cypher_union : query->cypher_unions_) {
-    cypher_union->Accept(symbol_generator);
-  }
-  return symbol_table;
-}
-
-}  // namespace memgraph::expr

src/expr/semantic/symbol_table.hpp

@@ -1,64 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <map>
-#include <string>
-
-#include "expr/ast.hpp"
-#include "expr/semantic/symbol.hpp"
-#include "utils/logging.hpp"
-
-namespace memgraph::expr {
-
-class SymbolTable final {
- public:
-  SymbolTable() {}
-  const Symbol &CreateSymbol(const std::string &name, bool user_declared, Symbol::Type type = Symbol::Type::ANY,
-                             int32_t token_position = -1) {
-    MG_ASSERT(table_.size() <= std::numeric_limits<int32_t>::max(),
-              "SymbolTable size doesn't fit into 32-bit integer!");
-    auto got = table_.emplace(position_, Symbol(name, position_, user_declared, type, token_position));
-    MG_ASSERT(got.second, "Duplicate symbol ID!");
-    position_++;
-    return got.first->second;
-  }
-
-  // TODO(buda): This is the same logic as in the cypher_main_visitor. During
-  // parsing phase symbol table doesn't exist. Figure out a better solution.
-  const Symbol &CreateAnonymousSymbol(Symbol::Type type = Symbol::Type::ANY) {
-    int id = 1;
-    while (true) {
-      static const std::string &kAnonPrefix = "anon";
-      std::string name_candidate = kAnonPrefix + std::to_string(id++);
-      if (std::find_if(std::begin(table_), std::end(table_), [&name_candidate](const auto &item) -> bool {
-            return item.second.name_ == name_candidate;
-          }) == std::end(table_)) {
-        return CreateSymbol(name_candidate, false, type);
-      }
-    }
-  }
-
-  const Symbol &at(const Identifier &ident) const { return table_.at(ident.symbol_pos_); }
-  const Symbol &at(const NamedExpression &nexpr) const { return table_.at(nexpr.symbol_pos_); }
-  const Symbol &at(const Aggregation &aggr) const { return table_.at(aggr.symbol_pos_); }
-
-  // TODO: Remove these since members are public
-  int32_t max_position() const { return static_cast<int32_t>(table_.size()); }
-
-  const auto &table() const { return table_; }
-
-  int32_t position_{0};
-  std::map<int32_t, Symbol> table_;
-};
-
-}  // namespace memgraph::expr

src/glue/v2/auth.cpp

@@ -1,64 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "glue/v2/auth.hpp"
-
-namespace memgraph::glue::v2 {
-
-auth::Permission PrivilegeToPermission(query::v2::AuthQuery::Privilege privilege) {
-  switch (privilege) {
-    case query::v2::AuthQuery::Privilege::MATCH:
-      return auth::Permission::MATCH;
-    case query::v2::AuthQuery::Privilege::CREATE:
-      return auth::Permission::CREATE;
-    case query::v2::AuthQuery::Privilege::MERGE:
-      return auth::Permission::MERGE;
-    case query::v2::AuthQuery::Privilege::DELETE:
-      return auth::Permission::DELETE;
-    case query::v2::AuthQuery::Privilege::SET:
-      return auth::Permission::SET;
-    case query::v2::AuthQuery::Privilege::REMOVE:
-      return auth::Permission::REMOVE;
-    case query::v2::AuthQuery::Privilege::INDEX:
-      return auth::Permission::INDEX;
-    case query::v2::AuthQuery::Privilege::STATS:
-      return auth::Permission::STATS;
-    case query::v2::AuthQuery::Privilege::CONSTRAINT:
-      return auth::Permission::CONSTRAINT;
-    case query::v2::AuthQuery::Privilege::DUMP:
-      return auth::Permission::DUMP;
-    case query::v2::AuthQuery::Privilege::REPLICATION:
-      return auth::Permission::REPLICATION;
-    case query::v2::AuthQuery::Privilege::DURABILITY:
-      return auth::Permission::DURABILITY;
-    case query::v2::AuthQuery::Privilege::READ_FILE:
-      return auth::Permission::READ_FILE;
-    case query::v2::AuthQuery::Privilege::FREE_MEMORY:
-      return auth::Permission::FREE_MEMORY;
-    case query::v2::AuthQuery::Privilege::TRIGGER:
-      return auth::Permission::TRIGGER;
-    case query::v2::AuthQuery::Privilege::CONFIG:
-      return auth::Permission::CONFIG;
-    case query::v2::AuthQuery::Privilege::AUTH:
-      return auth::Permission::AUTH;
-    case query::v2::AuthQuery::Privilege::STREAM:
-      return auth::Permission::STREAM;
-    case query::v2::AuthQuery::Privilege::MODULE_READ:
-      return auth::Permission::MODULE_READ;
-    case query::v2::AuthQuery::Privilege::MODULE_WRITE:
-      return auth::Permission::MODULE_WRITE;
-    case query::v2::AuthQuery::Privilege::WEBSOCKET:
-      return auth::Permission::WEBSOCKET;
-    case query::v2::AuthQuery::Privilege::SCHEMA:
-      return auth::Permission::SCHEMA;
-  }
-}
-}  // namespace memgraph::glue::v2

src/glue/v2/auth.hpp

@@ -1,23 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "auth/models.hpp"
-#include "query/v2/frontend/ast/ast.hpp"
-
-namespace memgraph::glue::v2 {
-
-/**
- * This function converts query::AuthQuery::Privilege to its corresponding
- * auth::Permission.
- */
-auth::Permission PrivilegeToPermission(query::v2::AuthQuery::Privilege privilege);
-
-}  // namespace memgraph::glue::v2

src/glue/v2/communication.cpp

@@ -1,277 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "glue/v2/communication.hpp"
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "storage/v3/edge_accessor.hpp"
-#include "storage/v3/shard.hpp"
-#include "storage/v3/vertex_accessor.hpp"
-#include "utils/temporal.hpp"
-
-using memgraph::communication::bolt::Value;
-
-namespace memgraph::glue::v2 {
-
-query::v2::TypedValue ToTypedValue(const Value &value) {
-  switch (value.type()) {
-    case Value::Type::Null:
-      return {};
-    case Value::Type::Bool:
-      return query::v2::TypedValue(value.ValueBool());
-    case Value::Type::Int:
-      return query::v2::TypedValue(value.ValueInt());
-    case Value::Type::Double:
-      return query::v2::TypedValue(value.ValueDouble());
-    case Value::Type::String:
-      return query::v2::TypedValue(value.ValueString());
-    case Value::Type::List: {
-      std::vector<query::v2::TypedValue> list;
-      list.reserve(value.ValueList().size());
-      for (const auto &v : value.ValueList()) list.push_back(ToTypedValue(v));
-      return query::v2::TypedValue(std::move(list));
-    }
-    case Value::Type::Map: {
-      std::map<std::string, query::v2::TypedValue> map;
-      for (const auto &kv : value.ValueMap()) map.emplace(kv.first, ToTypedValue(kv.second));
-      return query::v2::TypedValue(std::move(map));
-    }
-    case Value::Type::Vertex:
-    case Value::Type::Edge:
-    case Value::Type::UnboundedEdge:
-    case Value::Type::Path:
-      throw communication::bolt::ValueException("Unsupported conversion from Value to TypedValue");
-    case Value::Type::Date:
-      return query::v2::TypedValue(value.ValueDate());
-    case Value::Type::LocalTime:
-      return query::v2::TypedValue(value.ValueLocalTime());
-    case Value::Type::LocalDateTime:
-      return query::v2::TypedValue(value.ValueLocalDateTime());
-    case Value::Type::Duration:
-      return query::v2::TypedValue(value.ValueDuration());
-  }
-}
-
-storage::v3::Result<communication::bolt::Vertex> ToBoltVertex(const query::v2::VertexAccessor &vertex,
-                                                              const storage::v3::Shard &db, storage::v3::View view) {
-  return ToBoltVertex(vertex.impl_, db, view);
-}
-
-storage::v3::Result<communication::bolt::Edge> ToBoltEdge(const query::v2::EdgeAccessor &edge,
-                                                          const storage::v3::Shard &db, storage::v3::View view) {
-  return ToBoltEdge(edge.impl_, db, view);
-}
-
-storage::v3::Result<Value> ToBoltValue(const query::v2::TypedValue &value, const storage::v3::Shard &db,
-                                       storage::v3::View view) {
-  switch (value.type()) {
-    case query::v2::TypedValue::Type::Null:
-      return Value();
-    case query::v2::TypedValue::Type::Bool:
-      return Value(value.ValueBool());
-    case query::v2::TypedValue::Type::Int:
-      return Value(value.ValueInt());
-    case query::v2::TypedValue::Type::Double:
-      return Value(value.ValueDouble());
-    case query::v2::TypedValue::Type::String:
-      return Value(std::string(value.ValueString()));
-    case query::v2::TypedValue::Type::List: {
-      std::vector<Value> values;
-      values.reserve(value.ValueList().size());
-      for (const auto &v : value.ValueList()) {
-        auto maybe_value = ToBoltValue(v, db, view);
-        if (maybe_value.HasError()) return maybe_value.GetError();
-        values.emplace_back(std::move(*maybe_value));
-      }
-      return Value(std::move(values));
-    }
-    case query::v2::TypedValue::Type::Map: {
-      std::map<std::string, Value> map;
-      for (const auto &kv : value.ValueMap()) {
-        auto maybe_value = ToBoltValue(kv.second, db, view);
-        if (maybe_value.HasError()) return maybe_value.GetError();
-        map.emplace(kv.first, std::move(*maybe_value));
-      }
-      return Value(std::move(map));
-    }
-    case query::v2::TypedValue::Type::Vertex: {
-      auto maybe_vertex = ToBoltVertex(value.ValueVertex(), db, view);
-      if (maybe_vertex.HasError()) return maybe_vertex.GetError();
-      return Value(std::move(*maybe_vertex));
-    }
-    case query::v2::TypedValue::Type::Edge: {
-      auto maybe_edge = ToBoltEdge(value.ValueEdge(), db, view);
-      if (maybe_edge.HasError()) return maybe_edge.GetError();
-      return Value(std::move(*maybe_edge));
-    }
-    case query::v2::TypedValue::Type::Path: {
-      auto maybe_path = ToBoltPath(value.ValuePath(), db, view);
-      if (maybe_path.HasError()) return maybe_path.GetError();
-      return Value(std::move(*maybe_path));
-    }
-    case query::v2::TypedValue::Type::Date:
-      return Value(value.ValueDate());
-    case query::v2::TypedValue::Type::LocalTime:
-      return Value(value.ValueLocalTime());
-    case query::v2::TypedValue::Type::LocalDateTime:
-      return Value(value.ValueLocalDateTime());
-    case query::v2::TypedValue::Type::Duration:
-      return Value(value.ValueDuration());
-  }
-}
-
-storage::v3::Result<communication::bolt::Vertex> ToBoltVertex(const storage::v3::VertexAccessor &vertex,
-                                                              const storage::v3::Shard &db, storage::v3::View view) {
-  // TODO(jbajic) Fix bolt communication
-  auto id = communication::bolt::Id::FromUint(0);
-  auto maybe_labels = vertex.Labels(view);
-  if (maybe_labels.HasError()) return maybe_labels.GetError();
-  std::vector<std::string> labels;
-  labels.reserve(maybe_labels->size());
-  for (const auto &label : *maybe_labels) {
-    labels.push_back(db.LabelToName(label));
-  }
-  auto maybe_properties = vertex.Properties(view);
-  if (maybe_properties.HasError()) return maybe_properties.GetError();
-  std::map<std::string, Value> properties;
-  for (const auto &prop : *maybe_properties) {
-    properties[db.PropertyToName(prop.first)] = ToBoltValue(prop.second);
-  }
-  return communication::bolt::Vertex{id, labels, properties};
-}
-
-storage::v3::Result<communication::bolt::Edge> ToBoltEdge(const storage::v3::EdgeAccessor &edge,
-                                                          const storage::v3::Shard &db, storage::v3::View view) {
-  // TODO(jbajic) Fix bolt communication
-  auto id = communication::bolt::Id::FromUint(0);
-  auto from = communication::bolt::Id::FromUint(0);
-  auto to = communication::bolt::Id::FromUint(0);
-  const auto &type = db.EdgeTypeToName(edge.EdgeType());
-  auto maybe_properties = edge.Properties(view);
-  if (maybe_properties.HasError()) return maybe_properties.GetError();
-  std::map<std::string, Value> properties;
-  for (const auto &prop : *maybe_properties) {
-    properties[db.PropertyToName(prop.first)] = ToBoltValue(prop.second);
-  }
-  return communication::bolt::Edge{id, from, to, type, properties};
-}
-
-storage::v3::Result<communication::bolt::Path> ToBoltPath(const query::v2::Path &path, const storage::v3::Shard &db,
-                                                          storage::v3::View view) {
-  std::vector<communication::bolt::Vertex> vertices;
-  vertices.reserve(path.vertices().size());
-  for (const auto &v : path.vertices()) {
-    auto maybe_vertex = ToBoltVertex(v, db, view);
-    if (maybe_vertex.HasError()) return maybe_vertex.GetError();
-    vertices.emplace_back(std::move(*maybe_vertex));
-  }
-  std::vector<communication::bolt::Edge> edges;
-  edges.reserve(path.edges().size());
-  for (const auto &e : path.edges()) {
-    auto maybe_edge = ToBoltEdge(e, db, view);
-    if (maybe_edge.HasError()) return maybe_edge.GetError();
-    edges.emplace_back(std::move(*maybe_edge));
-  }
-  return communication::bolt::Path(vertices, edges);
-}
-
-storage::v3::PropertyValue ToPropertyValue(const Value &value) {
-  switch (value.type()) {
-    case Value::Type::Null:
-      return {};
-    case Value::Type::Bool:
-      return storage::v3::PropertyValue(value.ValueBool());
-    case Value::Type::Int:
-      return storage::v3::PropertyValue(value.ValueInt());
-    case Value::Type::Double:
-      return storage::v3::PropertyValue(value.ValueDouble());
-    case Value::Type::String:
-      return storage::v3::PropertyValue(value.ValueString());
-    case Value::Type::List: {
-      std::vector<storage::v3::PropertyValue> vec;
-      vec.reserve(value.ValueList().size());
-      for (const auto &value : value.ValueList()) vec.emplace_back(ToPropertyValue(value));
-      return storage::v3::PropertyValue(std::move(vec));
-    }
-    case Value::Type::Map: {
-      std::map<std::string, storage::v3::PropertyValue> map;
-      for (const auto &kv : value.ValueMap()) map.emplace(kv.first, ToPropertyValue(kv.second));
-      return storage::v3::PropertyValue(std::move(map));
-    }
-    case Value::Type::Vertex:
-    case Value::Type::Edge:
-    case Value::Type::UnboundedEdge:
-    case Value::Type::Path:
-      throw communication::bolt::ValueException("Unsupported conversion from Value to PropertyValue");
-    case Value::Type::Date:
-      return storage::v3::PropertyValue(
-          storage::v3::TemporalData(storage::v3::TemporalType::Date, value.ValueDate().MicrosecondsSinceEpoch()));
-    case Value::Type::LocalTime:
-      return storage::v3::PropertyValue(storage::v3::TemporalData(storage::v3::TemporalType::LocalTime,
-                                                                  value.ValueLocalTime().MicrosecondsSinceEpoch()));
-    case Value::Type::LocalDateTime:
-      return storage::v3::PropertyValue(storage::v3::TemporalData(storage::v3::TemporalType::LocalDateTime,
-                                                                  value.ValueLocalDateTime().MicrosecondsSinceEpoch()));
-    case Value::Type::Duration:
-      return storage::v3::PropertyValue(
-          storage::v3::TemporalData(storage::v3::TemporalType::Duration, value.ValueDuration().microseconds));
-  }
-}
-
-Value ToBoltValue(const storage::v3::PropertyValue &value) {
-  switch (value.type()) {
-    case storage::v3::PropertyValue::Type::Null:
-      return {};
-    case storage::v3::PropertyValue::Type::Bool:
-      return {value.ValueBool()};
-    case storage::v3::PropertyValue::Type::Int:
-      return {value.ValueInt()};
-      break;
-    case storage::v3::PropertyValue::Type::Double:
-      return {value.ValueDouble()};
-    case storage::v3::PropertyValue::Type::String:
-      return {value.ValueString()};
-    case storage::v3::PropertyValue::Type::List: {
-      const auto &values = value.ValueList();
-      std::vector<Value> vec;
-      vec.reserve(values.size());
-      for (const auto &v : values) {
-        vec.push_back(ToBoltValue(v));
-      }
-      return {std::move(vec)};
-    }
-    case storage::v3::PropertyValue::Type::Map: {
-      const auto &map = value.ValueMap();
-      std::map<std::string, Value> dv_map;
-      for (const auto &kv : map) {
-        dv_map.emplace(kv.first, ToBoltValue(kv.second));
-      }
-      return {std::move(dv_map)};
-    }
-    case storage::v3::PropertyValue::Type::TemporalData:
-      const auto &type = value.ValueTemporalData();
-      switch (type.type) {
-        case storage::v3::TemporalType::Date:
-          return {utils::Date(type.microseconds)};
-        case storage::v3::TemporalType::LocalTime:
-          return {utils::LocalTime(type.microseconds)};
-        case storage::v3::TemporalType::LocalDateTime:
-          return {utils::LocalDateTime(type.microseconds)};
-        case storage::v3::TemporalType::Duration:
-          return {utils::Duration(type.microseconds)};
-      }
-  }
-}
-
-}  // namespace memgraph::glue::v2

src/glue/v2/communication.hpp

@@ -1,68 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-/// @file Conversion functions between Value and other memgraph types.
-#pragma once
-
-#include "communication/bolt/v1/value.hpp"
-#include "query/v2/bindings/typed_value.hpp"
-#include "storage/v3/property_value.hpp"
-#include "storage/v3/result.hpp"
-#include "storage/v3/view.hpp"
-
-namespace memgraph::storage::v3 {
-class EdgeAccessor;
-class Storage;
-class VertexAccessor;
-}  // namespace memgraph::storage::v3
-
-namespace memgraph::glue::v2 {
-
-/// @param storage::v3::VertexAccessor for converting to
-///        communication::bolt::Vertex.
-/// @param storage::v3::Shard for getting label and property names.
-/// @param storage::v3::View for deciding which vertex attributes are visible.
-///
-/// @throw std::bad_alloc
-storage::v3::Result<communication::bolt::Vertex> ToBoltVertex(const storage::v3::VertexAccessor &vertex,
-                                                              const storage::v3::Shard &db, storage::v3::View view);
-
-/// @param storage::v3::EdgeAccessor for converting to communication::bolt::Edge.
-/// @param storage::v3::Shard for getting edge type and property names.
-/// @param storage::v3::View for deciding which edge attributes are visible.
-///
-/// @throw std::bad_alloc
-storage::v3::Result<communication::bolt::Edge> ToBoltEdge(const storage::v3::EdgeAccessor &edge,
-                                                          const storage::v3::Shard &db, storage::v3::View view);
-
-/// @param query::v2::Path for converting to communication::bolt::Path.
-/// @param storage::v3::Shard for ToBoltVertex and ToBoltEdge.
-/// @param storage::v3::View for ToBoltVertex and ToBoltEdge.
-///
-/// @throw std::bad_alloc
-storage::v3::Result<communication::bolt::Path> ToBoltPath(const query::v2::Path &path, const storage::v3::Shard &db,
-                                                          storage::v3::View view);
-
-/// @param query::v2::TypedValue for converting to communication::bolt::Value.
-/// @param storage::v3::Shard for ToBoltVertex and ToBoltEdge.
-/// @param storage::v3::View for ToBoltVertex and ToBoltEdge.
-///
-/// @throw std::bad_alloc
-storage::v3::Result<communication::bolt::Value> ToBoltValue(const query::v2::TypedValue &value,
-                                                            const storage::v3::Shard &db, storage::v3::View view);
-
-query::v2::TypedValue ToTypedValue(const communication::bolt::Value &value);
-
-communication::bolt::Value ToBoltValue(const storage::v3::PropertyValue &value);
-
-storage::v3::PropertyValue ToPropertyValue(const communication::bolt::Value &value);
-
-}  // namespace memgraph::glue::v2

src/integrations/constants.hpp

@@ -17,7 +17,6 @@
 namespace memgraph::integrations {
 
 inline constexpr int64_t kDefaultCheckBatchLimit{1};
-inline constexpr int64_t kMinimumStartBatchLimit{1};
 inline constexpr std::chrono::milliseconds kDefaultCheckTimeout{30000};
 inline constexpr std::chrono::milliseconds kMinimumInterval{1};
 inline constexpr int64_t kMinimumSize{1};

src/integrations/kafka/consumer.cpp

@@ -74,36 +74,6 @@ utils::BasicResult<std::string, std::vector<Message>> GetBatch(RdKafka::KafkaCon
 
   return std::move(batch);
 }
-
-void CheckAndDestroyLastAssignmentIfNeeded(RdKafka::KafkaConsumer &consumer, const ConsumerInfo &info,
-                                           std::vector<RdKafka::TopicPartition *> &last_assignment) {
-  if (!last_assignment.empty()) {
-    if (const auto err = consumer.assign(last_assignment); err != RdKafka::ERR_NO_ERROR) {
-      throw ConsumerStartFailedException(info.consumer_name,
-                                         fmt::format("Couldn't restore commited offsets: '{}'", RdKafka::err2str(err)));
-    }
-    RdKafka::TopicPartition::destroy(last_assignment);
-  }
-}
-
-void TryToConsumeBatch(RdKafka::KafkaConsumer &consumer, const ConsumerInfo &info,
-                       const ConsumerFunction &consumer_function, const std::vector<Message> &batch) {
-  consumer_function(batch);
-  std::vector<RdKafka::TopicPartition *> partitions;
-  utils::OnScopeExit clear_partitions([&]() { RdKafka::TopicPartition::destroy(partitions); });
-
-  if (const auto err = consumer.assignment(partitions); err != RdKafka::ERR_NO_ERROR) {
-    throw ConsumerCommitFailedException(
-        info.consumer_name, fmt::format("Couldn't get assignment to commit offsets: {}", RdKafka::err2str(err)));
-  }
-  if (const auto err = consumer.position(partitions); err != RdKafka::ERR_NO_ERROR) {
-    throw ConsumerCommitFailedException(info.consumer_name,
-                                        fmt::format("Couldn't get offsets from librdkafka {}", RdKafka::err2str(err)));
-  }
-  if (const auto err = consumer.commitSync(partitions); err != RdKafka::ERR_NO_ERROR) {
-    throw ConsumerCommitFailedException(info.consumer_name, RdKafka::err2str(err));
-  }
-}
 }  // namespace
 
 Message::Message(std::unique_ptr<RdKafka::Message> &&message) : message_{std::move(message)} {
@@ -251,21 +221,10 @@ void Consumer::Start() {
   StartConsuming();
 }
 
-void Consumer::StartWithLimit(const uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const {
-  if (is_running_) {
-    throw ConsumerRunningException(info_.consumer_name);
+void Consumer::StartIfStopped() {
+  if (!is_running_) {
+    StartConsuming();
   }
-  if (limit_batches < kMinimumStartBatchLimit) {
-    throw ConsumerStartFailedException(
-        info_.consumer_name, fmt::format("Batch limit has to be greater than or equal to {}", kMinimumStartBatchLimit));
-  }
-  if (timeout.value_or(kMinimumInterval) < kMinimumInterval) {
-    throw ConsumerStartFailedException(
-        info_.consumer_name,
-        fmt::format("Timeout has to be greater than or equal to {} milliseconds", kMinimumInterval.count()));
-  }
-
-  StartConsumingWithLimit(limit_batches, timeout);
 }
 
 void Consumer::Stop() {
@@ -285,7 +244,7 @@ void Consumer::StopIfRunning() {
   }
 }
 
-void Consumer::Check(std::optional<std::chrono::milliseconds> timeout, std::optional<uint64_t> limit_batches,
+void Consumer::Check(std::optional<std::chrono::milliseconds> timeout, std::optional<int64_t> limit_batches,
                      const ConsumerFunction &check_consumer_function) const {
   // NOLINTNEXTLINE (modernize-use-nullptr)
   if (timeout.value_or(kMinimumInterval) < kMinimumInterval) {
@@ -385,7 +344,13 @@ void Consumer::StartConsuming() {
 
   is_running_.store(true);
 
-  CheckAndDestroyLastAssignmentIfNeeded(*consumer_, info_, last_assignment_);
+  if (!last_assignment_.empty()) {
+    if (const auto err = consumer_->assign(last_assignment_); err != RdKafka::ERR_NO_ERROR) {
+      throw ConsumerStartFailedException(info_.consumer_name,
+                                         fmt::format("Couldn't restore commited offsets: '{}'", RdKafka::err2str(err)));
+    }
+    RdKafka::TopicPartition::destroy(last_assignment_);
+  }
 
   thread_ = std::thread([this] {
     static constexpr auto kMaxThreadNameSize = utils::GetMaxThreadNameSize();
@@ -396,18 +361,33 @@ void Consumer::StartConsuming() {
     while (is_running_) {
       auto maybe_batch = GetBatch(*consumer_, info_, is_running_);
       if (maybe_batch.HasError()) {
-        throw ConsumerReadMessagesFailedException(info_.consumer_name, maybe_batch.GetError());
+        spdlog::warn("Error happened in consumer {} while fetching messages: {}!", info_.consumer_name,
+                     maybe_batch.GetError());
+        break;
       }
       const auto &batch = maybe_batch.GetValue();
 
-      if (batch.empty()) {
-        continue;
-      }
+      if (batch.empty()) continue;
 
       spdlog::info("Kafka consumer {} is processing a batch", info_.consumer_name);
 
       try {
-        TryToConsumeBatch(*consumer_, info_, consumer_function_, batch);
+        consumer_function_(batch);
+        std::vector<RdKafka::TopicPartition *> partitions;
+        utils::OnScopeExit clear_partitions([&]() { RdKafka::TopicPartition::destroy(partitions); });
+
+        if (const auto err = consumer_->assignment(partitions); err != RdKafka::ERR_NO_ERROR) {
+          throw ConsumerCheckFailedException(
+              info_.consumer_name, fmt::format("Couldn't get assignment to commit offsets: {}", RdKafka::err2str(err)));
+        }
+        if (const auto err = consumer_->position(partitions); err != RdKafka::ERR_NO_ERROR) {
+          throw ConsumerCheckFailedException(
+              info_.consumer_name, fmt::format("Couldn't get offsets from librdkafka {}", RdKafka::err2str(err)));
+        }
+        if (const auto err = consumer_->commitSync(partitions); err != RdKafka::ERR_NO_ERROR) {
+          spdlog::warn("Committing offset of consumer {} failed: {}", info_.consumer_name, RdKafka::err2str(err));
+          break;
+        }
       } catch (const std::exception &e) {
         spdlog::warn("Error happened in consumer {} while processing a batch: {}!", info_.consumer_name, e.what());
         break;
@@ -418,44 +398,6 @@ void Consumer::StartConsuming() {
   });
 }
 
-void Consumer::StartConsumingWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const {
-  MG_ASSERT(!is_running_, "Cannot start already running consumer!");
-
-  if (is_running_.exchange(true)) {
-    throw ConsumerRunningException(info_.consumer_name);
-  }
-  utils::OnScopeExit restore_is_running([this] { is_running_.store(false); });
-
-  CheckAndDestroyLastAssignmentIfNeeded(*consumer_, info_, last_assignment_);
-
-  const auto timeout_to_use = timeout.value_or(kDefaultCheckTimeout);
-  const auto start = std::chrono::steady_clock::now();
-
-  for (uint64_t batch_count = 0; batch_count < limit_batches;) {
-    const auto now = std::chrono::steady_clock::now();
-    if (now - start >= timeout_to_use) {
-      throw ConsumerStartFailedException(info_.consumer_name, "Timeout reached");
-    }
-
-    const auto maybe_batch = GetBatch(*consumer_, info_, is_running_);
-    if (maybe_batch.HasError()) {
-      throw ConsumerReadMessagesFailedException(info_.consumer_name, maybe_batch.GetError());
-    }
-    const auto &batch = maybe_batch.GetValue();
-
-    if (batch.empty()) {
-      continue;
-    }
-    ++batch_count;
-
-    spdlog::info("Kafka consumer {} is processing a batch", info_.consumer_name);
-
-    TryToConsumeBatch(*consumer_, info_, consumer_function_, batch);
-
-    spdlog::info("Kafka consumer {} finished processing", info_.consumer_name);
-  }
-}
-
 void Consumer::StopConsuming() {
   is_running_.store(false);
   if (thread_.joinable()) thread_.join();

src/integrations/kafka/consumer.hpp

@@ -113,19 +113,11 @@ class Consumer final : public RdKafka::EventCb {
   /// This method will start a new thread which will poll all the topics for messages.
   ///
   /// @throws ConsumerRunningException if the consumer is already running
-  /// @throws ConsumerStartFailedException if the commited offsets cannot be restored
   void Start();
 
-  /// Starts consuming messages.
+  /// Starts consuming messages if it is not started already.
   ///
-  /// This method will start a new thread which will poll all the topics for messages.
-  ///
-  /// @param limit_batches the consumer will only consume the given number of batches.
-  /// @param timeout the maximum duration during which the command should run.
-  ///
-  /// @throws ConsumerRunningException if the consumer is already running
-  /// @throws ConsumerStartFailedException if the commited offsets cannot be restored
-  void StartWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const;
+  void StartIfStopped();
 
   /// Stops consuming messages.
   ///
@@ -144,9 +136,9 @@ class Consumer final : public RdKafka::EventCb {
   ///                      used.
   /// @param check_consumer_function a function to feed the received messages in, only used during this dry-run.
   ///
-  /// @throws ConsumerRunningException if the consumer is already running.
+  /// @throws ConsumerRunningException if the consumer is alredy running.
   /// @throws ConsumerCheckFailedException if check isn't successful.
-  void Check(std::optional<std::chrono::milliseconds> timeout, std::optional<uint64_t> limit_batches,
+  void Check(std::optional<std::chrono::milliseconds> timeout, std::optional<int64_t> limit_batches,
              const ConsumerFunction &check_consumer_function) const;
 
   /// Returns true if the consumer is actively consuming messages.
@@ -165,7 +157,6 @@ class Consumer final : public RdKafka::EventCb {
   void event_cb(RdKafka::Event &event) override;
 
   void StartConsuming();
-  void StartConsumingWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const;
 
   void StopConsuming();
 
@@ -187,6 +178,7 @@ class Consumer final : public RdKafka::EventCb {
   ConsumerFunction consumer_function_;
   mutable std::atomic<bool> is_running_{false};
   mutable std::vector<RdKafka::TopicPartition *> last_assignment_;  // Protected by is_running_
+  std::optional<int64_t> limit_batches_{std::nullopt};
   std::unique_ptr<RdKafka::KafkaConsumer, std::function<void(RdKafka::KafkaConsumer *)>> consumer_;
   std::thread thread_;
   ConsumerRebalanceCb cb_;

src/integrations/kafka/exceptions.hpp

@@ -64,16 +64,4 @@ class TopicNotFoundException : public KafkaStreamException {
   TopicNotFoundException(const std::string_view consumer_name, const std::string_view topic_name)
       : KafkaStreamException("Kafka consumer {} cannot find topic {}", consumer_name, topic_name) {}
 };
-
-class ConsumerCommitFailedException : public KafkaStreamException {
- public:
-  ConsumerCommitFailedException(const std::string_view consumer_name, const std::string_view error)
-      : KafkaStreamException("Committing offset of consumer {} failed: {}", consumer_name, error) {}
-};
-
-class ConsumerReadMessagesFailedException : public KafkaStreamException {
- public:
-  ConsumerReadMessagesFailedException(const std::string_view consumer_name, const std::string_view error)
-      : KafkaStreamException("Error happened in consumer {} while fetching messages: {}", consumer_name, error) {}
-};
 }  // namespace memgraph::integrations::kafka

src/integrations/pulsar/consumer.cpp

@@ -11,14 +11,13 @@
 
 #include "integrations/pulsar/consumer.hpp"
 
-#include <algorithm>
-#include <chrono>
-#include <thread>
-
 #include <fmt/format.h>
 #include <pulsar/Client.h>
 #include <pulsar/InitialPosition.h>
 
+#include <chrono>
+#include <thread>
+
 #include "integrations/constants.hpp"
 #include "integrations/pulsar/exceptions.hpp"
 #include "utils/concepts.hpp"
@@ -34,10 +33,6 @@ namespace {
 template <typename T>
 concept PulsarConsumer = utils::SameAsAnyOf<T, pulsar_client::Consumer, pulsar_client::Reader>;
 
-template <typename TFunc>
-concept PulsarMessageGetter =
-    std::same_as<const pulsar_client::Message &, std::invoke_result_t<TFunc, const Message &>>;
-
 pulsar_client::Result ConsumeMessage(pulsar_client::Consumer &consumer, pulsar_client::Message &message,
                                      int remaining_timeout_in_ms) {
   return consumer.receive(message, remaining_timeout_in_ms);
@@ -102,26 +97,6 @@ pulsar_client::Client CreateClient(const std::string &service_url) {
   conf.setLogger(new SpdlogLoggerFactory);
   return {service_url, conf};
 }
-
-template <PulsarConsumer TConsumer, PulsarMessageGetter TPulsarMessageGetter>
-void TryToConsumeBatch(TConsumer &consumer, const ConsumerInfo &info, const ConsumerFunction &consumer_function,
-                       pulsar_client::MessageId &last_message_id, const std::vector<Message> &batch,
-                       const TPulsarMessageGetter &message_getter) {
-  consumer_function(batch);
-
-  auto has_message_failed = [&consumer, &info, &last_message_id, &message_getter](const auto &message) {
-    if (const auto result = consumer.acknowledge(message_getter(message)); result != pulsar_client::ResultOk) {
-      spdlog::warn("Acknowledging a message of consumer {} failed: {}", info.consumer_name, result);
-      return true;
-    }
-    last_message_id = message_getter(message).getMessageId();
-    return false;
-  };
-
-  if (std::ranges::any_of(batch, has_message_failed)) {
-    throw ConsumerAcknowledgeMessagesFailedException(info.consumer_name);
-  }
-}
 }  // namespace
 
 Message::Message(pulsar_client::Message &&message) : message_{std::move(message)} {}
@@ -162,24 +137,6 @@ void Consumer::Start() {
   StartConsuming();
 }
 
-void Consumer::StartWithLimit(const uint64_t limit_batches,
-                              const std::optional<std::chrono::milliseconds> timeout) const {
-  if (is_running_) {
-    throw ConsumerRunningException(info_.consumer_name);
-  }
-  if (limit_batches < kMinimumStartBatchLimit) {
-    throw ConsumerStartFailedException(
-        info_.consumer_name, fmt::format("Batch limit has to be greater than or equal to {}", kMinimumStartBatchLimit));
-  }
-  if (timeout.value_or(kMinimumInterval) < kMinimumInterval) {
-    throw ConsumerStartFailedException(
-        info_.consumer_name,
-        fmt::format("Timeout has to be greater than or equal to {} milliseconds", kMinimumInterval.count()));
-  }
-
-  StartConsumingWithLimit(limit_batches, timeout);
-}
-
 void Consumer::Stop() {
   if (!is_running_) {
     throw ConsumerStoppedException(info_.consumer_name);
@@ -197,7 +154,7 @@ void Consumer::StopIfRunning() {
   }
 }
 
-void Consumer::Check(std::optional<std::chrono::milliseconds> timeout, std::optional<uint64_t> limit_batches,
+void Consumer::Check(std::optional<std::chrono::milliseconds> timeout, std::optional<int64_t> limit_batches,
                      const ConsumerFunction &check_consumer_function) const {
   // NOLINTNEXTLINE (modernize-use-nullptr)
   if (timeout.value_or(kMinimumInterval) < kMinimumInterval) {
@@ -283,7 +240,9 @@ void Consumer::StartConsuming() {
       auto maybe_batch = GetBatch(consumer_, info_, is_running_, last_message_id_);
 
       if (maybe_batch.HasError()) {
-        throw ConsumerReadMessagesFailedException(info_.consumer_name, maybe_batch.GetError());
+        spdlog::warn("Error happened in consumer {} while fetching messages: {}!", info_.consumer_name,
+                     maybe_batch.GetError());
+        break;
       }
 
       const auto &batch = maybe_batch.GetValue();
@@ -295,8 +254,18 @@ void Consumer::StartConsuming() {
       spdlog::info("Pulsar consumer {} is processing a batch", info_.consumer_name);
 
       try {
-        TryToConsumeBatch(consumer_, info_, consumer_function_, last_message_id_, batch,
-                          [&](const Message &message) -> const pulsar_client::Message & { return message.message_; });
+        consumer_function_(batch);
+
+        if (std::any_of(batch.begin(), batch.end(), [&](const auto &message) {
+              if (const auto result = consumer_.acknowledge(message.message_); result != pulsar_client::ResultOk) {
+                spdlog::warn("Acknowledging a message of consumer {} failed: {}", info_.consumer_name, result);
+                return true;
+              }
+              last_message_id_ = message.message_.getMessageId();
+              return false;
+            })) {
+          break;
+        }
       } catch (const std::exception &e) {
         spdlog::warn("Error happened in consumer {} while processing a batch: {}!", info_.consumer_name, e.what());
         break;
@@ -308,43 +277,6 @@ void Consumer::StartConsuming() {
   });
 }
 
-void Consumer::StartConsumingWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const {
-  if (is_running_.exchange(true)) {
-    throw ConsumerRunningException(info_.consumer_name);
-  }
-  utils::OnScopeExit restore_is_running([this] { is_running_.store(false); });
-
-  const auto timeout_to_use = timeout.value_or(kDefaultCheckTimeout);
-  const auto start = std::chrono::steady_clock::now();
-
-  for (uint64_t batch_count = 0; batch_count < limit_batches;) {
-    const auto now = std::chrono::steady_clock::now();
-    if (now - start >= timeout_to_use) {
-      throw ConsumerCheckFailedException(info_.consumer_name, "Timeout reached");
-    }
-
-    const auto maybe_batch = GetBatch(consumer_, info_, is_running_, last_message_id_);
-
-    if (maybe_batch.HasError()) {
-      throw ConsumerReadMessagesFailedException(info_.consumer_name, maybe_batch.GetError());
-    }
-
-    const auto &batch = maybe_batch.GetValue();
-
-    if (batch.empty()) {
-      continue;
-    }
-    ++batch_count;
-
-    spdlog::info("Pulsar consumer {} is processing a batch", info_.consumer_name);
-
-    TryToConsumeBatch(consumer_, info_, consumer_function_, last_message_id_, batch,
-                      [](const Message &message) -> const pulsar_client::Message & { return message.message_; });
-
-    spdlog::info("Pulsar consumer {} finished processing", info_.consumer_name);
-  }
-}
-
 void Consumer::StopConsuming() {
   is_running_.store(false);
   if (thread_.joinable()) {

src/integrations/pulsar/consumer.hpp

@@ -58,27 +58,25 @@ class Consumer final {
 
   bool IsRunning() const;
   void Start();
-  void StartWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const;
   void Stop();
   void StopIfRunning();
 
-  void Check(std::optional<std::chrono::milliseconds> timeout, std::optional<uint64_t> limit_batches,
+  void Check(std::optional<std::chrono::milliseconds> timeout, std::optional<int64_t> limit_batches,
              const ConsumerFunction &check_consumer_function) const;
 
   const ConsumerInfo &Info() const;
 
  private:
   void StartConsuming();
-  void StartConsumingWithLimit(uint64_t limit_batches, std::optional<std::chrono::milliseconds> timeout) const;
   void StopConsuming();
 
   ConsumerInfo info_;
   mutable pulsar_client::Client client_;
-  mutable pulsar_client::Consumer consumer_;
+  pulsar_client::Consumer consumer_;
   ConsumerFunction consumer_function_;
 
   mutable std::atomic<bool> is_running_{false};
-  mutable pulsar_client::MessageId last_message_id_{pulsar_client::MessageId::earliest()};  // Protected by is_running_
+  pulsar_client::MessageId last_message_id_{pulsar_client::MessageId::earliest()};
   std::thread thread_;
 };
 }  // namespace memgraph::integrations::pulsar

src/integrations/pulsar/exceptions.hpp

@@ -55,16 +55,4 @@ class TopicNotFoundException : public PulsarStreamException {
   TopicNotFoundException(const std::string &consumer_name, const std::string &topic_name)
       : PulsarStreamException("Pulsar consumer {} cannot find topic {}", consumer_name, topic_name) {}
 };
-
-class ConsumerReadMessagesFailedException : public PulsarStreamException {
- public:
-  ConsumerReadMessagesFailedException(const std::string_view consumer_name, const std::string_view error)
-      : PulsarStreamException("Error happened in consumer {} while fetching messages: {}", consumer_name, error) {}
-};
-
-class ConsumerAcknowledgeMessagesFailedException : public PulsarStreamException {
- public:
-  explicit ConsumerAcknowledgeMessagesFailedException(const std::string_view consumer_name)
-      : PulsarStreamException("Acknowledging a message of consumer {} has failed!", consumer_name) {}
-};
 }  // namespace memgraph::integrations::pulsar

src/io/address.hpp

@@ -1,77 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <compare>
-
-#include <fmt/format.h>
-#include <boost/asio/ip/tcp.hpp>
-#include <boost/uuid/uuid.hpp>
-#include <boost/uuid/uuid_generators.hpp>
-#include <boost/uuid/uuid_io.hpp>
-
-namespace memgraph::io {
-struct Address {
-  // It's important for all participants to have a
-  // unique identifier - IP and port alone are not
-  // enough, and may change over the lifecycle of
-  // the nodes. Particularly storage nodes may change
-  // their IP addresses over time, and the system
-  // should gracefully update its information
-  // about them.
-  boost::uuids::uuid unique_id;
-  boost::asio::ip::address last_known_ip;
-  uint16_t last_known_port;
-
-  static Address TestAddress(uint16_t port) {
-    return Address{
-        .unique_id = boost::uuids::uuid{boost::uuids::random_generator()()},
-        .last_known_port = port,
-    };
-  }
-
-  static Address UniqueLocalAddress() {
-    return Address{
-        .unique_id = boost::uuids::uuid{boost::uuids::random_generator()()},
-    };
-  }
-
-  /// Returns a new ID with the same IP and port but a unique UUID.
-  Address ForkUniqueAddress() {
-    return Address{
-        .unique_id = boost::uuids::uuid{boost::uuids::random_generator()()},
-        .last_known_ip = last_known_ip,
-        .last_known_port = last_known_port,
-    };
-  }
-
-  friend bool operator==(const Address &lhs, const Address &rhs) = default;
-
-  /// unique_id is most dominant for ordering, then last_known_ip, then last_known_port
-  friend bool operator<(const Address &lhs, const Address &rhs) {
-    if (lhs.unique_id != rhs.unique_id) {
-      return lhs.unique_id < rhs.unique_id;
-    }
-
-    if (lhs.last_known_ip != rhs.last_known_ip) {
-      return lhs.last_known_ip < rhs.last_known_ip;
-    }
-
-    return lhs.last_known_port < rhs.last_known_port;
-  }
-
-  std::string ToString() const {
-    return fmt::format("Address {{ unique_id: {}, last_known_ip: {}, last_known_port: {} }}",
-                       boost::uuids::to_string(unique_id), last_known_ip.to_string(), last_known_port);
-  }
-};
-};  // namespace memgraph::io

src/io/errors.hpp

@@ -1,26 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-namespace memgraph::io {
-// Signifies that a retriable operation was unable to
-// complete after a configured number of retries.
-struct RetriesExhausted {};
-
-// Signifies that a request was unable to receive a response
-// within some configured timeout duration. It is important
-// to remember that in distributed systems, a timeout does
-// not signify that a request was not received or processed.
-// It may be the case that the request was fully processed
-// but that the response was not received.
-struct TimedOut {};
-};  // namespace memgraph::io

src/io/future.hpp

@@ -1,256 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <condition_variable>
-#include <memory>
-#include <mutex>
-#include <optional>
-#include <thread>
-#include <utility>
-
-#include "io/errors.hpp"
-#include "utils/logging.hpp"
-
-namespace memgraph::io {
-
-// Shared is in an anonymous namespace, and the only way to
-// construct a Promise or Future is to pass a Shared in. This
-// ensures that Promises and Futures can only be constructed
-// in this translation unit.
-namespace details {
-template <typename T>
-class Shared {
-  mutable std::condition_variable cv_;
-  mutable std::mutex mu_;
-  std::optional<T> item_;
-  bool consumed_ = false;
-  bool waiting_ = false;
-  std::function<bool()> simulator_notifier_ = nullptr;
-
- public:
-  explicit Shared(std::function<bool()> simulator_notifier) : simulator_notifier_(simulator_notifier) {}
-  Shared() = default;
-  Shared(Shared &&) = delete;
-  Shared &operator=(Shared &&) = delete;
-  Shared(const Shared &) = delete;
-  Shared &operator=(const Shared &) = delete;
-  ~Shared() = default;
-
-  /// Takes the item out of our optional item_ and returns it.
-  T Take() {
-    MG_ASSERT(item_, "Take called without item_ being present");
-    MG_ASSERT(!consumed_, "Take called on already-consumed Future");
-
-    T ret = std::move(item_).value();
-    item_.reset();
-
-    consumed_ = true;
-
-    return ret;
-  }
-
-  T Wait() {
-    std::unique_lock<std::mutex> lock(mu_);
-    waiting_ = true;
-
-    while (!item_) {
-      bool simulator_progressed = false;
-      if (simulator_notifier_) [[unlikely]] {
-        // We can't hold our own lock while notifying
-        // the simulator because notifying the simulator
-        // involves acquiring the simulator's mutex
-        // to guarantee that our notification linearizes
-        // with the simulator's condition variable.
-        // However, the simulator may acquire our
-        // mutex to check if we are being awaited,
-        // while determining system quiescence,
-        // so we have to get out of its way to avoid
-        // a cyclical deadlock.
-        lock.unlock();
-        simulator_progressed = std::invoke(simulator_notifier_);
-        lock.lock();
-        if (item_) {
-          // item may have been filled while we
-          // had dropped our mutex while notifying
-          // the simulator of our waiting_ status.
-          break;
-        }
-      }
-      if (!simulator_progressed) [[likely]] {
-        cv_.wait(lock);
-      }
-      MG_ASSERT(!consumed_, "Future consumed twice!");
-    }
-
-    waiting_ = false;
-
-    return Take();
-  }
-
-  bool IsReady() const {
-    std::unique_lock<std::mutex> lock(mu_);
-    return item_.has_value();
-  }
-
-  std::optional<T> TryGet() {
-    std::unique_lock<std::mutex> lock(mu_);
-
-    if (item_) {
-      return Take();
-    }
-
-    return std::nullopt;
-  }
-
-  void Fill(T item) {
-    {
-      std::unique_lock<std::mutex> lock(mu_);
-
-      MG_ASSERT(!consumed_, "Promise filled after it was already consumed!");
-      MG_ASSERT(!item_, "Promise filled twice!");
-
-      item_ = item;
-    }  // lock released before condition variable notification
-
-    cv_.notify_all();
-  }
-
-  bool IsAwaited() const {
-    std::unique_lock<std::mutex> lock(mu_);
-    return waiting_;
-  }
-};
-}  // namespace details
-
-template <typename T>
-class Future {
-  bool consumed_or_moved_ = false;
-  std::shared_ptr<details::Shared<T>> shared_;
-
- public:
-  explicit Future(std::shared_ptr<details::Shared<T>> shared) : shared_(shared) {}
-
-  Future() = delete;
-  Future(Future &&old) noexcept {
-    MG_ASSERT(!old.consumed_or_moved_, "Future moved from after already being moved from or consumed.");
-    shared_ = std::move(old.shared_);
-    consumed_or_moved_ = old.consumed_or_moved_;
-    old.consumed_or_moved_ = true;
-  }
-
-  Future(const Future &) = delete;
-  Future &operator=(const Future &) = delete;
-  ~Future() = default;
-
-  /// Returns true if the Future is ready to
-  /// be consumed using TryGet or Wait (prefer Wait
-  /// if you know it's ready, because it doesn't
-  /// return an optional.
-  bool IsReady() {
-    MG_ASSERT(!consumed_or_moved_, "Called IsReady after Future already consumed!");
-    return shared_->IsReady();
-  }
-
-  /// Non-blocking method that returns the inner
-  /// item if it's already ready, or std::nullopt
-  /// if it is not ready yet.
-  std::optional<T> TryGet() {
-    MG_ASSERT(!consumed_or_moved_, "Called TryGet after Future already consumed!");
-    std::optional<T> ret = shared_->TryGet();
-    if (ret) {
-      consumed_or_moved_ = true;
-    }
-    return ret;
-  }
-
-  /// Block on the corresponding promise to be filled,
-  /// returning the inner item when ready.
-  T Wait() && {
-    MG_ASSERT(!consumed_or_moved_, "Future should only be consumed with Wait once!");
-    T ret = shared_->Wait();
-    consumed_or_moved_ = true;
-    return ret;
-  }
-
-  /// Marks this Future as canceled.
-  void Cancel() {
-    MG_ASSERT(!consumed_or_moved_, "Future::Cancel called on a future that was already moved or consumed!");
-    consumed_or_moved_ = true;
-  }
-};
-
-template <typename T>
-class Promise {
-  std::shared_ptr<details::Shared<T>> shared_;
-  bool filled_or_moved_ = false;
-
- public:
-  explicit Promise(std::shared_ptr<details::Shared<T>> shared) : shared_(shared) {}
-
-  Promise() = delete;
-  Promise(Promise &&old) noexcept {
-    MG_ASSERT(!old.filled_or_moved_, "Promise moved from after already being moved from or filled.");
-    shared_ = std::move(old.shared_);
-    old.filled_or_moved_ = true;
-  }
-
-  Promise &operator=(Promise &&old) noexcept {
-    MG_ASSERT(!old.filled_or_moved_, "Promise moved from after already being moved from or filled.");
-    shared_ = std::move(old.shared_);
-    old.filled_or_moved_ = true;
-  }
-  Promise(const Promise &) = delete;
-  Promise &operator=(const Promise &) = delete;
-
-  ~Promise() { MG_ASSERT(filled_or_moved_, "Promise destroyed before its associated Future was filled!"); }
-
-  // Fill the expected item into the Future.
-  void Fill(T item) {
-    MG_ASSERT(!filled_or_moved_, "Promise::Fill called on a promise that is already filled or moved!");
-    shared_->Fill(item);
-    filled_or_moved_ = true;
-  }
-
-  bool IsAwaited() { return shared_->IsAwaited(); }
-
-  /// Moves this Promise into a unique_ptr.
-  std::unique_ptr<Promise<T>> ToUnique() && {
-    std::unique_ptr<Promise<T>> up = std::make_unique<Promise<T>>(std::move(shared_));
-
-    filled_or_moved_ = true;
-
-    return up;
-  }
-};
-
-template <typename T>
-std::pair<Future<T>, Promise<T>> FuturePromisePair() {
-  std::shared_ptr<details::Shared<T>> shared = std::make_shared<details::Shared<T>>();
-
-  Future<T> future = Future<T>(shared);
-  Promise<T> promise = Promise<T>(shared);
-
-  return std::make_pair(std::move(future), std::move(promise));
-}
-
-template <typename T>
-std::pair<Future<T>, Promise<T>> FuturePromisePairWithNotifier(std::function<bool()> simulator_notifier) {
-  std::shared_ptr<details::Shared<T>> shared = std::make_shared<details::Shared<T>>(simulator_notifier);
-
-  Future<T> future = Future<T>(shared);
-  Promise<T> promise = Promise<T>(shared);
-
-  return std::make_pair(std::move(future), std::move(promise));
-}
-
-};  // namespace memgraph::io

src/io/local_transport/local_system.hpp

@@ -1,35 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <random>
-
-#include "io/address.hpp"
-#include "io/local_transport/local_transport.hpp"
-#include "io/local_transport/local_transport_handle.hpp"
-#include "io/transport.hpp"
-
-namespace memgraph::io::local_transport {
-
-class LocalSystem {
-  std::shared_ptr<LocalTransportHandle> local_transport_handle_ = std::make_shared<LocalTransportHandle>();
-
- public:
-  Io<LocalTransport> Register(Address address) {
-    LocalTransport local_transport(local_transport_handle_);
-    return Io{local_transport, address};
-  }
-
-  void ShutDown() { local_transport_handle_->ShutDown(); }
-};
-
-}  // namespace memgraph::io::local_transport

src/io/local_transport/local_transport.hpp

@@ -1,64 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <chrono>
-#include <memory>
-#include <random>
-#include <utility>
-
-#include "io/address.hpp"
-#include "io/local_transport/local_transport_handle.hpp"
-#include "io/time.hpp"
-#include "io/transport.hpp"
-
-namespace memgraph::io::local_transport {
-
-class LocalTransport {
-  std::shared_ptr<LocalTransportHandle> local_transport_handle_;
-
- public:
-  explicit LocalTransport(std::shared_ptr<LocalTransportHandle> local_transport_handle)
-      : local_transport_handle_(std::move(local_transport_handle)) {}
-
-  template <Message RequestT, Message ResponseT>
-  ResponseFuture<ResponseT> Request(Address to_address, Address from_address, RequestId request_id, RequestT request,
-                                    Duration timeout) {
-    auto [future, promise] = memgraph::io::FuturePromisePair<ResponseResult<ResponseT>>();
-
-    local_transport_handle_->SubmitRequest(to_address, from_address, request_id, std::move(request), timeout,
-                                           std::move(promise));
-
-    return std::move(future);
-  }
-
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) RequestResult<Ms...> Receive(Address receiver_address, Duration timeout) {
-    return local_transport_handle_->template Receive<Ms...>(receiver_address, timeout);
-  }
-
-  template <Message M>
-  void Send(Address to_address, Address from_address, RequestId request_id, M &&message) {
-    return local_transport_handle_->template Send<M>(to_address, from_address, request_id, std::forward<M>(message));
-  }
-
-  Time Now() const { return local_transport_handle_->Now(); }
-
-  bool ShouldShutDown() const { return local_transport_handle_->ShouldShutDown(); }
-
-  template <class D = std::poisson_distribution<>, class Return = uint64_t>
-  Return Rand(D distrib) {
-    std::random_device rng;
-    return distrib(rng);
-  }
-};
-};  // namespace memgraph::io::local_transport

src/io/local_transport/local_transport_handle.hpp

@@ -1,151 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <chrono>
-#include <condition_variable>
-#include <iostream>
-#include <map>
-#include <mutex>
-
-#include "io/errors.hpp"
-#include "io/message_conversion.hpp"
-#include "io/time.hpp"
-#include "io/transport.hpp"
-
-namespace memgraph::io::local_transport {
-
-class LocalTransportHandle {
-  mutable std::mutex mu_{};
-  mutable std::condition_variable cv_;
-  bool should_shut_down_ = false;
-
-  // the responses to requests that are being waited on
-  std::map<PromiseKey, DeadlineAndOpaquePromise> promises_;
-
-  // messages that are sent to servers that may later receive them
-  std::vector<OpaqueMessage> can_receive_;
-
- public:
-  ~LocalTransportHandle() {
-    for (auto &&[pk, promise] : promises_) {
-      std::move(promise.promise).TimeOut();
-    }
-    promises_.clear();
-  }
-
-  void ShutDown() {
-    std::unique_lock<std::mutex> lock(mu_);
-    should_shut_down_ = true;
-    cv_.notify_all();
-  }
-
-  bool ShouldShutDown() const {
-    std::unique_lock<std::mutex> lock(mu_);
-    return should_shut_down_;
-  }
-
-  static Time Now() {
-    auto nano_time = std::chrono::system_clock::now();
-    return std::chrono::time_point_cast<std::chrono::microseconds>(nano_time);
-  }
-
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) RequestResult<Ms...> Receive(Address /* receiver_address */, Duration timeout) {
-    std::unique_lock lock(mu_);
-
-    Time before = Now();
-
-    spdlog::info("can_receive_ size: {}", can_receive_.size());
-
-    while (can_receive_.empty()) {
-      Time now = Now();
-
-      // protection against non-monotonic timesources
-      auto maxed_now = std::max(now, before);
-      auto elapsed = maxed_now - before;
-
-      if (timeout < elapsed) {
-        return TimedOut{};
-      }
-
-      Duration relative_timeout = timeout - elapsed;
-
-      std::cv_status cv_status_value = cv_.wait_for(lock, relative_timeout);
-
-      if (cv_status_value == std::cv_status::timeout) {
-        return TimedOut{};
-      }
-    }
-
-    auto current_message = std::move(can_receive_.back());
-    can_receive_.pop_back();
-
-    auto m_opt = std::move(current_message).Take<Ms...>();
-
-    return std::move(m_opt).value();
-  }
-
-  template <Message M>
-  void Send(Address to_address, Address from_address, RequestId request_id, M &&message) {
-    std::any message_any(std::forward<M>(message));
-    OpaqueMessage opaque_message{.to_address = to_address,
-                                 .from_address = from_address,
-                                 .request_id = request_id,
-                                 .message = std::move(message_any)};
-
-    PromiseKey promise_key{
-        .requester_address = to_address, .request_id = opaque_message.request_id, .replier_address = from_address};
-
-    {
-      std::unique_lock<std::mutex> lock(mu_);
-
-      if (promises_.contains(promise_key)) {
-        spdlog::info("using message to fill promise");
-        // complete waiting promise if it's there
-        DeadlineAndOpaquePromise dop = std::move(promises_.at(promise_key));
-        promises_.erase(promise_key);
-
-        dop.promise.Fill(std::move(opaque_message));
-      } else {
-        spdlog::info("placing message in can_receive_");
-        can_receive_.emplace_back(std::move(opaque_message));
-      }
-    }  // lock dropped
-
-    cv_.notify_all();
-  }
-
-  template <Message RequestT, Message ResponseT>
-  void SubmitRequest(Address to_address, Address from_address, RequestId request_id, RequestT &&request,
-                     Duration timeout, ResponsePromise<ResponseT> promise) {
-    const bool port_matches = to_address.last_known_port == from_address.last_known_port;
-    const bool ip_matches = to_address.last_known_ip == from_address.last_known_ip;
-
-    MG_ASSERT(port_matches && ip_matches);
-    const Time deadline = Now() + timeout;
-
-    {
-      std::unique_lock<std::mutex> lock(mu_);
-
-      PromiseKey promise_key{
-          .requester_address = from_address, .request_id = request_id, .replier_address = to_address};
-      OpaquePromise opaque_promise(std::move(promise).ToUnique());
-      DeadlineAndOpaquePromise dop{.deadline = deadline, .promise = std::move(opaque_promise)};
-      promises_.emplace(std::move(promise_key), std::move(dop));
-    }  // lock dropped
-
-    Send(to_address, from_address, request_id, std::forward<RequestT>(request));
-  }
-};
-
-}  // namespace memgraph::io::local_transport

src/io/message_conversion.hpp

@@ -1,232 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include "io/transport.hpp"
-
-namespace memgraph::io {
-
-using memgraph::io::Duration;
-using memgraph::io::Message;
-using memgraph::io::Time;
-
-struct PromiseKey {
-  Address requester_address;
-  uint64_t request_id;
-  // TODO(tyler) possibly remove replier_address from promise key
-  // once we want to support DSR.
-  Address replier_address;
-
- public:
-  friend bool operator<(const PromiseKey &lhs, const PromiseKey &rhs) {
-    if (lhs.requester_address != rhs.requester_address) {
-      return lhs.requester_address < rhs.requester_address;
-    }
-
-    if (lhs.request_id != rhs.request_id) {
-      return lhs.request_id < rhs.request_id;
-    }
-
-    return lhs.replier_address < rhs.replier_address;
-  }
-};
-
-struct OpaqueMessage {
-  Address to_address;
-  Address from_address;
-  uint64_t request_id;
-  std::any message;
-
-  /// Recursively tries to match a specific type from the outer
-  /// variant's parameter pack against the type of the std::any,
-  /// and if it matches, make it concrete and return it. Otherwise,
-  /// move on and compare the any with the next type from the
-  /// parameter pack.
-  ///
-  /// Return is the full std::variant<Ts...> type that holds the
-  /// full parameter pack without interfering with recursive
-  /// narrowing expansion.
-  template <typename Return, Message Head, Message... Rest>
-  std::optional<Return> Unpack(std::any &&a) {
-    if (typeid(Head) == a.type()) {
-      Head concrete = std::any_cast<Head>(std::move(a));
-      return concrete;
-    }
-
-    if constexpr (sizeof...(Rest) > 0) {
-      return Unpack<Return, Rest...>(std::move(a));
-    } else {
-      return std::nullopt;
-    }
-  }
-
-  /// High level "user-facing" conversion function that lets
-  /// people interested in conversion only supply a single
-  /// parameter pack for the types that they want to compare
-  /// with the any and potentially include in the returned
-  /// variant.
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) std::optional<std::variant<Ms...>> VariantFromAny(std::any &&a) {
-    return Unpack<std::variant<Ms...>, Ms...>(std::move(a));
-  }
-
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) std::optional<RequestEnvelope<Ms...>> Take() && {
-    std::optional<std::variant<Ms...>> m_opt = VariantFromAny<Ms...>(std::move(message));
-
-    if (m_opt) {
-      return RequestEnvelope<Ms...>{
-          .message = std::move(*m_opt),
-          .request_id = request_id,
-          .to_address = to_address,
-          .from_address = from_address,
-      };
-    }
-
-    return std::nullopt;
-  }
-};
-
-class OpaquePromiseTraitBase {
- public:
-  virtual const std::type_info *TypeInfo() const = 0;
-  virtual bool IsAwaited(void *ptr) const = 0;
-  virtual void Fill(void *ptr, OpaqueMessage &&) const = 0;
-  virtual void TimeOut(void *ptr) const = 0;
-
-  virtual ~OpaquePromiseTraitBase() = default;
-  OpaquePromiseTraitBase() = default;
-  OpaquePromiseTraitBase(const OpaquePromiseTraitBase &) = delete;
-  OpaquePromiseTraitBase &operator=(const OpaquePromiseTraitBase &) = delete;
-  OpaquePromiseTraitBase(OpaquePromiseTraitBase &&old) = delete;
-  OpaquePromiseTraitBase &operator=(OpaquePromiseTraitBase &&) = delete;
-};
-
-template <typename T>
-class OpaquePromiseTrait : public OpaquePromiseTraitBase {
- public:
-  const std::type_info *TypeInfo() const override { return &typeid(T); };
-
-  bool IsAwaited(void *ptr) const override { return static_cast<ResponsePromise<T> *>(ptr)->IsAwaited(); };
-
-  void Fill(void *ptr, OpaqueMessage &&opaque_message) const override {
-    T message = std::any_cast<T>(std::move(opaque_message.message));
-    auto response_envelope = ResponseEnvelope<T>{.message = std::move(message),
-                                                 .request_id = opaque_message.request_id,
-                                                 .to_address = opaque_message.to_address,
-                                                 .from_address = opaque_message.from_address};
-    auto promise = static_cast<ResponsePromise<T> *>(ptr);
-    auto unique_promise = std::unique_ptr<ResponsePromise<T>>(promise);
-    unique_promise->Fill(std::move(response_envelope));
-  };
-
-  void TimeOut(void *ptr) const override {
-    auto promise = static_cast<ResponsePromise<T> *>(ptr);
-    auto unique_promise = std::unique_ptr<ResponsePromise<T>>(promise);
-    ResponseResult<T> result = TimedOut{};
-    unique_promise->Fill(std::move(result));
-  }
-};
-
-class OpaquePromise {
-  void *ptr_;
-  std::unique_ptr<OpaquePromiseTraitBase> trait_;
-
- public:
-  OpaquePromise(OpaquePromise &&old) noexcept : ptr_(old.ptr_), trait_(std::move(old.trait_)) {
-    MG_ASSERT(old.ptr_ != nullptr);
-    old.ptr_ = nullptr;
-  }
-
-  OpaquePromise &operator=(OpaquePromise &&old) noexcept {
-    MG_ASSERT(ptr_ == nullptr);
-    MG_ASSERT(old.ptr_ != nullptr);
-    MG_ASSERT(this != &old);
-    ptr_ = old.ptr_;
-    trait_ = std::move(old.trait_);
-    old.ptr_ = nullptr;
-    return *this;
-  }
-
-  OpaquePromise(const OpaquePromise &) = delete;
-  OpaquePromise &operator=(const OpaquePromise &) = delete;
-
-  template <typename T>
-  std::unique_ptr<ResponsePromise<T>> Take() && {
-    MG_ASSERT(typeid(T) == *trait_->TypeInfo());
-    MG_ASSERT(ptr_ != nullptr);
-
-    auto ptr = static_cast<ResponsePromise<T> *>(ptr_);
-
-    ptr_ = nullptr;
-
-    return std::unique_ptr<T>(ptr);
-  }
-
-  template <typename T>
-  explicit OpaquePromise(std::unique_ptr<ResponsePromise<T>> promise)
-      : ptr_(static_cast<void *>(promise.release())), trait_(std::make_unique<OpaquePromiseTrait<T>>()) {}
-
-  bool IsAwaited() {
-    MG_ASSERT(ptr_ != nullptr);
-    return trait_->IsAwaited(ptr_);
-  }
-
-  void TimeOut() {
-    MG_ASSERT(ptr_ != nullptr);
-    trait_->TimeOut(ptr_);
-    ptr_ = nullptr;
-  }
-
-  void Fill(OpaqueMessage &&opaque_message) {
-    MG_ASSERT(ptr_ != nullptr);
-    trait_->Fill(ptr_, std::move(opaque_message));
-    ptr_ = nullptr;
-  }
-
-  ~OpaquePromise() {
-    MG_ASSERT(ptr_ == nullptr, "OpaquePromise destroyed without being explicitly timed out or filled");
-  }
-};
-
-struct DeadlineAndOpaquePromise {
-  Time deadline;
-  OpaquePromise promise;
-};
-
-template <class From>
-std::type_info const &type_info_for_variant(From const &from) {
-  return std::visit([](auto &&x) -> decltype(auto) { return typeid(x); }, from);
-}
-
-template <typename From, typename Return, typename Head, typename... Rest>
-std::optional<Return> ConvertVariantInner(From &&a) {
-  if (typeid(Head) == type_info_for_variant(a)) {
-    Head concrete = std::get<Head>(std::forward<From>(a));
-    return concrete;
-  }
-
-  if constexpr (sizeof...(Rest) > 0) {
-    return ConvertVariantInner<From, Return, Rest...>(std::forward<From>(a));
-  } else {
-    return std::nullopt;
-  }
-}
-
-/// This function converts a variant to another variant holding a subset OR superset of
-/// possible types.
-template <class From, class... Ms>
-requires(sizeof...(Ms) > 0) std::optional<std::variant<Ms...>> ConvertVariant(From &&from) {
-  return ConvertVariantInner<From, std::variant<Ms...>, Ms...>(std::forward<From>(from));
-}
-
-}  // namespace memgraph::io

src/io/messages.hpp

@@ -1,46 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <variant>
-
-#include <coordinator/coordinator.hpp>
-#include <io/rsm/raft.hpp>
-#include "query/v2/requests.hpp"
-#include "utils/concepts.hpp"
-
-namespace memgraph::io::messages {
-
-using memgraph::coordinator::CoordinatorReadRequests;
-using memgraph::coordinator::CoordinatorWriteRequests;
-using memgraph::coordinator::CoordinatorWriteResponses;
-using StorageReadRequest = msgs::ReadRequests;
-using StorageWriteRequest = msgs::WriteRequests;
-
-using memgraph::io::rsm::AppendRequest;
-using memgraph::io::rsm::AppendResponse;
-using memgraph::io::rsm::ReadRequest;
-using memgraph::io::rsm::VoteRequest;
-using memgraph::io::rsm::VoteResponse;
-using memgraph::io::rsm::WriteRequest;
-using memgraph::io::rsm::WriteResponse;
-
-using CoordinatorMessages =
-    std::variant<ReadRequest<CoordinatorReadRequests>, AppendRequest<CoordinatorWriteRequests>, AppendResponse,
-                 WriteRequest<CoordinatorWriteRequests>, VoteRequest, VoteResponse>;
-
-using ShardMessages = std::variant<ReadRequest<StorageReadRequest>, AppendRequest<StorageWriteRequest>, AppendResponse,
-                                   WriteRequest<StorageWriteRequest>, VoteRequest, VoteResponse>;
-
-using ShardManagerMessages = std::variant<WriteResponse<CoordinatorWriteResponses>>;
-
-}  // namespace memgraph::io::messages

src/io/rsm/raft.hpp

@@ -1,926 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-// TODO(tyler) buffer out-of-order Append buffers on the Followers to reassemble more quickly
-// TODO(tyler) handle granular batch sizes based on simple flow control
-
-#pragma once
-
-#include <deque>
-#include <iostream>
-#include <map>
-#include <set>
-#include <thread>
-#include <unordered_map>
-#include <vector>
-
-#include "io/simulator/simulator.hpp"
-#include "io/transport.hpp"
-#include "utils/concepts.hpp"
-
-namespace memgraph::io::rsm {
-
-/// Timeout and replication tunables
-using namespace std::chrono_literals;
-static constexpr auto kMinimumElectionTimeout = 100ms;
-static constexpr auto kMaximumElectionTimeout = 200ms;
-static constexpr auto kMinimumBroadcastTimeout = 40ms;
-static constexpr auto kMaximumBroadcastTimeout = 60ms;
-static constexpr auto kMinimumCronInterval = 1ms;
-static constexpr auto kMaximumCronInterval = 2ms;
-static constexpr auto kMinimumReceiveTimeout = 40ms;
-static constexpr auto kMaximumReceiveTimeout = 60ms;
-static_assert(kMinimumElectionTimeout > kMaximumBroadcastTimeout,
-              "The broadcast timeout has to be smaller than the election timeout!");
-static_assert(kMinimumElectionTimeout < kMaximumElectionTimeout,
-              "The minimum election timeout has to be smaller than the maximum election timeout!");
-static_assert(kMinimumBroadcastTimeout < kMaximumBroadcastTimeout,
-              "The minimum broadcast timeout has to be smaller than the maximum broadcast timeout!");
-static_assert(kMinimumCronInterval < kMaximumCronInterval,
-              "The minimum cron interval has to be smaller than the maximum cron interval!");
-static_assert(kMinimumReceiveTimeout < kMaximumReceiveTimeout,
-              "The minimum receive timeout has to be smaller than the maximum receive timeout!");
-static constexpr size_t kMaximumAppendBatchSize = 1024;
-
-using Term = uint64_t;
-using LogIndex = uint64_t;
-using LogSize = uint64_t;
-
-template <typename WriteOperation>
-struct WriteRequest {
-  WriteOperation operation;
-};
-
-/// WriteResponse is returned to a client after
-/// their WriteRequest was entered in to the raft
-/// log and it reached consensus.
-///
-/// WriteReturn is the result of applying the WriteRequest to
-/// ReplicatedState, and if the ReplicatedState::write
-/// method is deterministic, all replicas will
-/// have the same ReplicatedState after applying
-/// the submitted WriteRequest.
-template <typename WriteReturn>
-struct WriteResponse {
-  bool success;
-  WriteReturn write_return;
-  std::optional<Address> retry_leader;
-  LogIndex raft_index;
-};
-
-template <typename ReadOperation>
-struct ReadRequest {
-  ReadOperation operation;
-};
-
-template <typename ReadReturn>
-struct ReadResponse {
-  bool success;
-  ReadReturn read_return;
-  std::optional<Address> retry_leader;
-};
-
-/// AppendRequest is a raft-level message that the Leader
-/// periodically broadcasts to all Follower peers. This
-/// serves three main roles:
-/// 1. acts as a heartbeat from the Leader to the Follower
-/// 2. replicates new data that the Leader has received to the Follower
-/// 3. informs Follower peers when the commit index has increased,
-///    signalling that it is now safe to apply log items to the
-///    replicated state machine
-template <typename WriteRequest>
-struct AppendRequest {
-  Term term = 0;
-  LogIndex batch_start_log_index;
-  Term last_log_term;
-  std::vector<std::pair<Term, WriteRequest>> entries;
-  LogSize leader_commit;
-};
-
-struct AppendResponse {
-  bool success;
-  Term term;
-  Term last_log_term;
-  // a small optimization over the raft paper, tells
-  // the leader the offset that we are interested in
-  // to send log offsets from for us. This will only
-  // be useful at the beginning of a leader's term.
-  LogSize log_size;
-};
-
-struct VoteRequest {
-  Term term = 0;
-  LogSize log_size;
-  Term last_log_term;
-};
-
-struct VoteResponse {
-  Term term = 0;
-  LogSize committed_log_size;
-  bool vote_granted = false;
-};
-
-template <typename WriteRequest>
-struct CommonState {
-  Term term = 0;
-  std::vector<std::pair<Term, WriteRequest>> log;
-  LogSize committed_log_size = 0;
-  LogSize applied_size = 0;
-};
-
-struct FollowerTracker {
-  LogIndex next_index = 0;
-  LogSize confirmed_log_size = 0;
-};
-
-struct PendingClientRequest {
-  RequestId request_id;
-  Address address;
-  Time received_at;
-};
-
-struct Leader {
-  std::map<Address, FollowerTracker> followers;
-  std::unordered_map<LogIndex, PendingClientRequest> pending_client_requests;
-  Time last_broadcast = Time::min();
-
-  std::string static ToString() { return "\tLeader   \t"; }
-};
-
-struct Candidate {
-  std::map<Address, LogSize> successful_votes;
-  Time election_began = Time::min();
-  std::set<Address> outstanding_votes;
-
-  std::string static ToString() { return "\tCandidate\t"; }
-};
-
-struct Follower {
-  Time last_received_append_entries_timestamp;
-  Address leader_address;
-
-  std::string static ToString() { return "\tFollower \t"; }
-};
-
-using Role = std::variant<Candidate, Leader, Follower>;
-
-template <typename Role>
-concept AllRoles = memgraph::utils::SameAsAnyOf<Role, Leader, Follower, Candidate>;
-
-template <typename Role>
-concept LeaderOrFollower = memgraph::utils::SameAsAnyOf<Role, Leader, Follower>;
-
-template <typename Role>
-concept FollowerOrCandidate = memgraph::utils::SameAsAnyOf<Role, Follower, Candidate>;
-
-/*
-all ReplicatedState classes should have an Apply method
-that returns our WriteResponseValue after consensus, and
-a Read method that returns our ReadResponseValue without
-requiring consensus.
-
-ReadResponse Read(ReadOperation);
-WriteResponseValue ReplicatedState::Apply(WriteRequest);
-
-For example:
-If the state is uint64_t, and WriteRequest is `struct PlusOne {};`,
-and WriteResponseValue is also uint64_t (the new value), then
-each call to state.Apply(PlusOne{}) will return the new value
-after incrementing it. 0, 1, 2, 3... and this will be sent back
-to the client that requested the mutation.
-
-In practice, these mutations will usually be predicated on some
-previous value, so that they are idempotent, functioning similarly
-to a CAS operation.
-*/
-template <typename WriteOperation, typename ReadOperation, typename ReplicatedState, typename WriteResponseValue,
-          typename ReadResponseValue>
-concept Rsm = requires(ReplicatedState state, WriteOperation w, ReadOperation r) {
-  { state.Read(r) } -> std::same_as<ReadResponseValue>;
-  { state.Apply(w) } -> std::same_as<WriteResponseValue>;
-};
-
-/// Parameter           Purpose
-/// --------------------------
-/// IoImpl              the concrete Io provider - SimulatorTransport, ThriftTransport, etc...
-/// ReplicatedState     the high-level data structure that is managed by the raft-backed replicated state machine
-/// WriteOperation      the individual operation type that is applied to the ReplicatedState in identical order
-///                     across each replica
-/// WriteResponseValue  the return value of calling ReplicatedState::Apply(WriteOperation), which is executed in
-///                     identical order across all replicas after an WriteOperation reaches consensus.
-/// ReadOperation       the type of operations that do not require consensus before executing directly
-///                     on a const ReplicatedState &
-/// ReadResponseValue   the return value of calling ReplicatedState::Read(ReadOperation), which is executed directly
-///                     without going through consensus first
-template <typename IoImpl, typename ReplicatedState, typename WriteOperation, typename WriteResponseValue,
-          typename ReadOperation, typename ReadResponseValue>
-requires Rsm<WriteOperation, ReadOperation, ReplicatedState, WriteResponseValue, ReadResponseValue>
-class Raft {
-  CommonState<WriteOperation> state_;
-  Role role_ = Candidate{};
-  Io<IoImpl> io_;
-  std::vector<Address> peers_;
-  ReplicatedState replicated_state_;
-  Time next_cron_;
-
- public:
-  Raft(Io<IoImpl> &&io, std::vector<Address> peers, ReplicatedState &&replicated_state)
-      : io_(std::forward<Io<IoImpl>>(io)),
-        peers_(peers),
-        replicated_state_(std::forward<ReplicatedState>(replicated_state)) {
-    if (peers.empty()) {
-      role_ = Leader{};
-    }
-  }
-
-  /// Periodic protocol maintenance. Returns the time that Cron should be called again
-  /// in the future.
-  Time Cron() {
-    // dispatch periodic logic based on our role to a specific Cron method.
-    std::optional<Role> new_role = std::visit([&](auto &role) { return Cron(role); }, role_);
-
-    if (new_role) {
-      role_ = std::move(new_role).value();
-    }
-    const Duration random_cron_interval = RandomTimeout(kMinimumCronInterval, kMaximumCronInterval);
-
-    return io_.Now() + random_cron_interval;
-  }
-
-  /// Returns the Address for our underlying Io implementation
-  Address GetAddress() { return io_.GetAddress(); }
-
-  using ReceiveVariant = std::variant<ReadRequest<ReadOperation>, AppendRequest<WriteOperation>, AppendResponse,
-                                      WriteRequest<WriteOperation>, VoteRequest, VoteResponse>;
-
-  void Handle(ReceiveVariant &&message_variant, RequestId request_id, Address from_address) {
-    // dispatch the message to a handler based on our role,
-    // which can be specified in the Handle first argument,
-    // or it can be `auto` if it's a handler for several roles
-    // or messages.
-    std::optional<Role> new_role = std::visit(
-        [&](auto &&msg, auto &role) mutable {
-          return Handle(role, std::forward<decltype(msg)>(msg), request_id, from_address);
-        },
-        std::forward<ReceiveVariant>(message_variant), role_);
-
-    // TODO(tyler) (M3) maybe replace std::visit with get_if for explicit prioritized matching, [[likely]] etc...
-    if (new_role) {
-      role_ = std::move(new_role).value();
-    }
-  }
-
-  void Run() {
-    while (!io_.ShouldShutDown()) {
-      const auto now = io_.Now();
-      if (now >= next_cron_) {
-        next_cron_ = Cron();
-      }
-
-      const Duration receive_timeout = RandomTimeout(kMinimumReceiveTimeout, kMaximumReceiveTimeout);
-
-      auto request_result =
-          io_.template ReceiveWithTimeout<ReadRequest<ReadOperation>, AppendRequest<WriteOperation>, AppendResponse,
-                                          WriteRequest<WriteOperation>, VoteRequest, VoteResponse>(receive_timeout);
-      if (request_result.HasError()) {
-        continue;
-      }
-
-      auto request = std::move(request_result.GetValue());
-
-      Handle(std::move(request.message), request.request_id, request.from_address);
-    }
-  }
-
- private:
-  // Raft paper - 5.3
-  // When the entry has been safely replicated, the leader applies the
-  // entry to its state machine and returns the result of that
-  // execution to the client.
-  //
-  // "Safely replicated" is defined as being known to be present
-  // on at least a majority of all peers (inclusive of the Leader).
-  void BumpCommitIndexAndReplyToClients(Leader &leader) {
-    auto confirmed_log_sizes = std::vector<LogSize>{};
-
-    // We include our own log size in the calculation of the log
-    // confirmed log size that is present on at least a majority of all peers.
-    confirmed_log_sizes.push_back(state_.log.size());
-
-    for (const auto &[addr, f] : leader.followers) {
-      confirmed_log_sizes.push_back(f.confirmed_log_size);
-      Log("Follower at port ", addr.last_known_port, " has confirmed log size of: ", f.confirmed_log_size);
-    }
-
-    // reverse sort from highest to lowest (using std::ranges::greater)
-    std::ranges::sort(confirmed_log_sizes, std::ranges::greater());
-
-    // This is a particularly correctness-critical calculation because it
-    // determines the committed log size that will be broadcast in
-    // the next AppendRequest.
-    //
-    // If the following sizes are recorded for clusters of different numbers of peers,
-    // these are the expected sizes that are considered to have reached consensus:
-    //
-    // state           | expected value | (confirmed_log_sizes.size() / 2)
-    // [1]              1                 (1 / 2) => 0
-    // [2, 1]           1                 (2 / 2) => 1
-    // [3, 2, 1]        2                 (3 / 2) => 1
-    // [4, 3, 2, 1]     2                 (4 / 2) => 2
-    // [5, 4, 3, 2, 1]  3                 (5 / 2) => 2
-    const size_t majority_index = confirmed_log_sizes.size() / 2;
-    const LogSize new_committed_log_size = confirmed_log_sizes[majority_index];
-
-    // We never go backwards in history.
-    MG_ASSERT(state_.committed_log_size <= new_committed_log_size,
-              "as a Leader, we have previously set our committed_log_size to {}, but our Followers have a majority "
-              "committed_log_size of {}",
-              state_.committed_log_size, new_committed_log_size);
-
-    state_.committed_log_size = new_committed_log_size;
-
-    // For each size between the old size and the new one (inclusive),
-    // Apply that log's WriteOperation to our replicated_state_,
-    // and use the specific return value of the ReplicatedState::Apply
-    // method (WriteResponseValue) to respond to the requester.
-    for (; state_.applied_size < state_.committed_log_size; state_.applied_size++) {
-      const LogIndex apply_index = state_.applied_size;
-      const auto &write_request = state_.log[apply_index].second;
-      const WriteResponseValue write_return = replicated_state_.Apply(write_request);
-
-      if (leader.pending_client_requests.contains(apply_index)) {
-        const PendingClientRequest client_request = std::move(leader.pending_client_requests.at(apply_index));
-        leader.pending_client_requests.erase(apply_index);
-
-        const WriteResponse<WriteResponseValue> resp{
-            .success = true,
-            .write_return = std::move(write_return),
-            .raft_index = apply_index,
-        };
-
-        io_.Send(client_request.address, client_request.request_id, std::move(resp));
-      }
-    }
-
-    Log("committed_log_size is now ", state_.committed_log_size);
-  }
-
-  // Raft paper - 5.1
-  // AppendEntries RPCs are initiated by leaders to replicate log entries and to provide a form of heartbeat
-  void BroadcastAppendEntries(std::map<Address, FollowerTracker> &followers) {
-    for (auto &[address, follower] : followers) {
-      const LogIndex next_index = follower.next_index;
-
-      const auto missing = state_.log.size() - next_index;
-      const auto batch_size = std::min(missing, kMaximumAppendBatchSize);
-      const auto start_index = next_index;
-      const auto end_index = start_index + batch_size;
-
-      // advance follower's next index
-      follower.next_index += batch_size;
-
-      std::vector<std::pair<Term, WriteOperation>> entries;
-
-      entries.insert(entries.begin(), state_.log.begin() + start_index, state_.log.begin() + end_index);
-
-      const Term previous_term_from_index = PreviousTermFromIndex(start_index);
-
-      Log("sending ", entries.size(), " entries to Follower ", address.last_known_port,
-          " which are above its next_index of ", next_index);
-
-      AppendRequest<WriteOperation> ar{
-          .term = state_.term,
-          .batch_start_log_index = start_index,
-          .last_log_term = previous_term_from_index,
-          .entries = std::move(entries),
-          .leader_commit = state_.committed_log_size,
-      };
-
-      // request_id not necessary to set because it's not a Future-backed Request.
-      static constexpr RequestId request_id = 0;
-
-      io_.Send(address, request_id, std::move(ar));
-    }
-  }
-
-  // Raft paper - 5.2
-  // Raft uses randomized election timeouts to ensure that split votes are rare and that they are resolved quickly
-  Duration RandomTimeout(Duration min, Duration max) {
-    std::uniform_int_distribution time_distrib(min.count(), max.count());
-
-    const auto rand_micros = io_.Rand(time_distrib);
-
-    return Duration{rand_micros};
-  }
-
-  Duration RandomTimeout(int min_micros, int max_micros) {
-    std::uniform_int_distribution time_distrib(min_micros, max_micros);
-
-    const int rand_micros = io_.Rand(time_distrib);
-
-    return std::chrono::microseconds{rand_micros};
-  }
-
-  Term PreviousTermFromIndex(LogIndex index) const {
-    if (index == 0 || state_.log.size() + 1 <= index) {
-      return 0;
-    }
-
-    const auto &[term, data] = state_.log.at(index - 1);
-    return term;
-  }
-
-  Term CommittedLogTerm() {
-    MG_ASSERT(state_.log.size() >= state_.committed_log_size);
-    if (state_.log.empty() || state_.committed_log_size == 0) {
-      return 0;
-    }
-
-    const auto &[term, data] = state_.log.at(state_.committed_log_size - 1);
-    return term;
-  }
-
-  Term LastLogTerm() const {
-    if (state_.log.empty()) {
-      return 0;
-    }
-
-    const auto &[term, data] = state_.log.back();
-    return term;
-  }
-
-  template <typename... Ts>
-  void Log(Ts &&...args) {
-    const Time now = io_.Now();
-    const auto micros = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count();
-    const Term term = state_.term;
-    const std::string role_string = std::visit([&](const auto &role) { return role.ToString(); }, role_);
-
-    std::ostringstream out;
-
-    out << '\t' << static_cast<int>(micros) << "\t" << term << "\t" << io_.GetAddress().last_known_port;
-
-    out << role_string;
-
-    (out << ... << args);
-
-    spdlog::info(out.str());
-  }
-
-  /////////////////////////////////////////////////////////////
-  /// Raft-related Cron methods
-  ///
-  /// Cron + std::visit is how events are dispatched
-  /// to certain code based on Raft role.
-  ///
-  /// Cron(role) takes as the first argument a reference to its
-  /// role, and as the second argument, the message that has
-  /// been received.
-  /////////////////////////////////////////////////////////////
-
-  // Raft paper - 5.2
-  // Candidates keep sending Vote to peers until:
-  // 1. receiving Append with a higher term (become Follower)
-  // 2. receiving Vote with a higher term (become a Follower)
-  // 3. receiving a quorum of responses to our last batch of Vote (become a Leader)
-  std::optional<Role> Cron(Candidate &candidate) {
-    const auto now = io_.Now();
-    const Duration election_timeout = RandomTimeout(kMinimumElectionTimeout, kMaximumElectionTimeout);
-    const auto election_timeout_us = std::chrono::duration_cast<std::chrono::milliseconds>(election_timeout).count();
-
-    if (now - candidate.election_began > election_timeout) {
-      state_.term++;
-      Log("becoming Candidate for term ", state_.term, " after leader timeout of ", election_timeout_us,
-          "ms elapsed since last election attempt");
-
-      const VoteRequest request{
-          .term = state_.term,
-          .log_size = state_.log.size(),
-          .last_log_term = LastLogTerm(),
-      };
-
-      auto outstanding_votes = std::set<Address>();
-
-      for (const auto &peer : peers_) {
-        // request_id not necessary to set because it's not a Future-backed Request.
-        static constexpr auto request_id = 0;
-        io_.template Send<VoteRequest>(peer, request_id, request);
-        outstanding_votes.insert(peer);
-      }
-
-      return Candidate{
-          .successful_votes = std::map<Address, LogIndex>(),
-          .election_began = now,
-          .outstanding_votes = outstanding_votes,
-      };
-    }
-    return std::nullopt;
-  }
-
-  // Raft paper - 5.2
-  // Followers become candidates if we haven't heard from the leader
-  // after a randomized timeout.
-  std::optional<Role> Cron(Follower &follower) {
-    const auto now = io_.Now();
-    const auto time_since_last_append_entries = now - follower.last_received_append_entries_timestamp;
-
-    // randomized follower timeout
-    const Duration election_timeout = RandomTimeout(kMinimumElectionTimeout, kMaximumElectionTimeout);
-
-    if (time_since_last_append_entries > election_timeout) {
-      // become a Candidate if we haven't heard from the Leader after this timeout
-      return Candidate{};
-    }
-
-    return std::nullopt;
-  }
-
-  // Leaders (re)send AppendRequest to followers.
-  std::optional<Role> Cron(Leader &leader) {
-    const Time now = io_.Now();
-    const Duration broadcast_timeout = RandomTimeout(kMinimumBroadcastTimeout, kMaximumBroadcastTimeout);
-
-    if (now - leader.last_broadcast > broadcast_timeout) {
-      BroadcastAppendEntries(leader.followers);
-      leader.last_broadcast = now;
-    }
-
-    return std::nullopt;
-  }
-
-  /////////////////////////////////////////////////////////////
-  /// Raft-related Handle methods
-  ///
-  /// Handle + std::visit is how events are dispatched
-  /// to certain code based on Raft role.
-  ///
-  /// Handle(role, message, ...)
-  /// takes as the first argument a reference
-  /// to its role, and as the second argument, the
-  /// message that has been received.
-  /////////////////////////////////////////////////////////////
-
-  // all roles can receive Vote and possibly become a follower
-  template <AllRoles ALL>
-  std::optional<Role> Handle(ALL & /* variable */, VoteRequest &&req, RequestId request_id, Address from_address) {
-    Log("received VoteRequest from ", from_address.last_known_port, " with term ", req.term);
-    const bool last_log_term_dominates = req.last_log_term >= LastLogTerm();
-    const bool term_dominates = req.term > state_.term;
-    const bool log_size_dominates = req.log_size >= state_.log.size();
-    const bool new_leader = last_log_term_dominates && term_dominates && log_size_dominates;
-
-    if (new_leader) {
-      MG_ASSERT(req.term > state_.term);
-      MG_ASSERT(std::max(req.term, state_.term) == req.term);
-    }
-
-    const VoteResponse res{
-        .term = std::max(req.term, state_.term),
-        .committed_log_size = state_.committed_log_size,
-        .vote_granted = new_leader,
-    };
-
-    io_.Send(from_address, request_id, res);
-
-    if (new_leader) {
-      // become a follower
-      state_.term = req.term;
-      return Follower{
-          .last_received_append_entries_timestamp = io_.Now(),
-          .leader_address = from_address,
-      };
-    }
-
-    if (term_dominates) {
-      Log("received a vote from an inferior candidate. Becoming Candidate");
-      state_.term = std::max(state_.term, req.term) + 1;
-      return Candidate{};
-    }
-
-    return std::nullopt;
-  }
-
-  std::optional<Role> Handle(Candidate &candidate, VoteResponse &&res, RequestId /* variable */, Address from_address) {
-    Log("received VoteResponse");
-
-    if (!res.vote_granted || res.term != state_.term) {
-      Log("received unsuccessful VoteResponse from term ", res.term, " when our candidacy term is ", state_.term);
-      // we received a delayed VoteResponse from the past, which has to do with an election that is
-      // no longer valid. We can simply drop this.
-      return std::nullopt;
-    }
-
-    MG_ASSERT(candidate.outstanding_votes.contains(from_address),
-              "Received unexpected VoteResponse from server not present in Candidate's outstanding_votes!");
-    candidate.outstanding_votes.erase(from_address);
-
-    MG_ASSERT(!candidate.successful_votes.contains(from_address),
-              "Received unexpected VoteResponse from server already in Candidate's successful_votes!");
-    candidate.successful_votes.insert({from_address, res.committed_log_size});
-
-    if (candidate.successful_votes.size() >= candidate.outstanding_votes.size()) {
-      std::map<Address, FollowerTracker> followers{};
-
-      for (const auto &[address, committed_log_size] : candidate.successful_votes) {
-        FollowerTracker follower{
-            .next_index = committed_log_size,
-            .confirmed_log_size = committed_log_size,
-        };
-        followers.insert({address, follower});
-      }
-      for (const auto &address : candidate.outstanding_votes) {
-        FollowerTracker follower{
-            .next_index = state_.log.size(),
-            .confirmed_log_size = 0,
-        };
-        followers.insert({address, follower});
-      }
-
-      Log("becoming Leader at term ", state_.term);
-
-      BroadcastAppendEntries(followers);
-
-      return Leader{
-          .followers = std::move(followers),
-          .pending_client_requests = std::unordered_map<LogIndex, PendingClientRequest>(),
-      };
-    }
-
-    return std::nullopt;
-  }
-
-  template <LeaderOrFollower LOF>
-  std::optional<Role> Handle(LOF & /* variable */, VoteResponse && /* variable */, RequestId /* variable */,
-                             Address /* variable */) {
-    Log("non-Candidate received VoteResponse");
-    return std::nullopt;
-  }
-
-  template <AllRoles ALL>
-  std::optional<Role> Handle(ALL &role, AppendRequest<WriteOperation> &&req, RequestId request_id,
-                             Address from_address) {
-    // log size starts out as state_.committed_log_size and only if everything is successful do we
-    // switch it to the log length.
-    AppendResponse res{
-        .success = false,
-        .term = state_.term,
-        .last_log_term = CommittedLogTerm(),
-        .log_size = state_.log.size(),
-    };
-
-    if constexpr (std::is_same<ALL, Leader>()) {
-      MG_ASSERT(req.term != state_.term, "Multiple leaders are acting under the term ", req.term);
-    }
-
-    const bool is_candidate = std::is_same<ALL, Candidate>();
-    const bool is_failed_competitor = is_candidate && req.term == state_.term;
-    const Time now = io_.Now();
-
-    // Raft paper - 5.2
-    // While waiting for votes, a candidate may receive an
-    // AppendEntries RPC from another server claiming to be leader. If
-    // the leader’s term (included in its RPC) is at least as large as
-    // the candidate’s current term, then the candidate recognizes the
-    // leader as legitimate and returns to follower state.
-    if (req.term > state_.term || is_failed_competitor) {
-      // become follower of this leader, reply with our log status
-      state_.term = req.term;
-
-      io_.Send(from_address, request_id, res);
-
-      Log("becoming Follower of Leader ", from_address.last_known_port, " at term ", req.term);
-      return Follower{
-          .last_received_append_entries_timestamp = now,
-          .leader_address = from_address,
-      };
-    }
-
-    if (req.term < state_.term) {
-      // nack this request from an old leader
-      io_.Send(from_address, request_id, res);
-
-      return std::nullopt;
-    }
-
-    // at this point, we're dealing with our own leader
-    if constexpr (std::is_same<ALL, Follower>()) {
-      // small specialization for when we're already a Follower
-      MG_ASSERT(role.leader_address == from_address, "Multiple Leaders are acting under the same term number!");
-      role.last_received_append_entries_timestamp = now;
-    } else {
-      Log("Somehow entered Follower-specific logic as a non-Follower");
-      MG_ASSERT(false, "Somehow entered Follower-specific logic as a non-Follower");
-    }
-
-    // Handle steady-state conditions.
-    if (req.batch_start_log_index != state_.log.size()) {
-      Log("req.batch_start_log_index of ", req.batch_start_log_index, " does not match our log size of ",
-          state_.log.size());
-    } else if (req.last_log_term != LastLogTerm()) {
-      Log("req.last_log_term differs from our leader term at that slot, expected: ", LastLogTerm(), " but got ",
-          req.last_log_term);
-    } else {
-      // happy path - Apply log
-      Log("applying batch of ", req.entries.size(), " entries to our log starting at index ",
-          req.batch_start_log_index);
-
-      const auto resize_length = req.batch_start_log_index;
-
-      MG_ASSERT(resize_length >= state_.committed_log_size,
-                "Applied history from Leader which goes back in time from our commit_index");
-
-      // possibly chop-off stuff that was replaced by
-      // things with different terms (we got data that
-      // hasn't reached consensus yet, which is normal)
-      state_.log.resize(resize_length);
-
-      if (req.entries.size() > 0) {
-        auto &[first_term, op] = req.entries.at(0);
-        MG_ASSERT(LastLogTerm() <= first_term);
-      }
-
-      state_.log.insert(state_.log.end(), std::make_move_iterator(req.entries.begin()),
-                        std::make_move_iterator(req.entries.end()));
-
-      MG_ASSERT(req.leader_commit >= state_.committed_log_size);
-      state_.committed_log_size = std::min(req.leader_commit, state_.log.size());
-
-      for (; state_.applied_size < state_.committed_log_size; state_.applied_size++) {
-        const auto &write_request = state_.log[state_.applied_size].second;
-        replicated_state_.Apply(write_request);
-      }
-
-      res.success = true;
-    }
-
-    res.last_log_term = LastLogTerm();
-    res.log_size = state_.log.size();
-
-    Log("returning log_size of ", res.log_size);
-
-    io_.Send(from_address, request_id, res);
-
-    return std::nullopt;
-  }
-
-  std::optional<Role> Handle(Leader &leader, AppendResponse &&res, RequestId /* variable */, Address from_address) {
-    if (res.term != state_.term) {
-      Log("received AppendResponse related to a previous term when we (presumably) were the leader");
-      return std::nullopt;
-    }
-
-    // TODO(tyler) when we have dynamic membership, this assert will become incorrect, but we should
-    // keep it in-place until then because it has bug finding value.
-    MG_ASSERT(leader.followers.contains(from_address), "received AppendResponse from unknown Follower");
-
-    // at this point, we know the term matches and we know this Follower
-
-    FollowerTracker &follower = leader.followers.at(from_address);
-
-    if (res.success) {
-      Log("got successful AppendResponse from ", from_address.last_known_port, " with log_size of ", res.log_size);
-      follower.next_index = std::max(follower.next_index, res.log_size);
-    } else {
-      Log("got unsuccessful AppendResponse from ", from_address.last_known_port, " with log_size of ", res.log_size);
-      follower.next_index = res.log_size;
-    }
-
-    follower.confirmed_log_size = std::max(follower.confirmed_log_size, res.log_size);
-
-    BumpCommitIndexAndReplyToClients(leader);
-
-    return std::nullopt;
-  }
-
-  template <FollowerOrCandidate FOC>
-  std::optional<Role> Handle(FOC & /* variable */, AppendResponse && /* variable */, RequestId /* variable */,
-                             Address /* variable */) {
-    // we used to be the leader, and are getting old delayed responses
-    return std::nullopt;
-  }
-
-  /////////////////////////////////////////////////////////////
-  /// RSM-related handle methods
-  /////////////////////////////////////////////////////////////
-
-  // Leaders are able to immediately respond to the requester (with a ReadResponseValue) applied to the ReplicatedState
-  std::optional<Role> Handle(Leader & /* variable */, ReadRequest<ReadOperation> &&req, RequestId request_id,
-                             Address from_address) {
-    Log("handling ReadOperation");
-    ReadOperation read_operation = req.operation;
-
-    ReadResponseValue read_return = replicated_state_.Read(read_operation);
-
-    const ReadResponse<ReadResponseValue> resp{
-        .success = true,
-        .read_return = std::move(read_return),
-        .retry_leader = std::nullopt,
-    };
-
-    io_.Send(from_address, request_id, resp);
-
-    return std::nullopt;
-  }
-
-  // Candidates should respond with a failure, similar to the Candidate + WriteRequest failure below
-  std::optional<Role> Handle(Candidate & /* variable */, ReadRequest<ReadOperation> && /* variable */,
-                             RequestId request_id, Address from_address) {
-    Log("received ReadOperation - not redirecting because no Leader is known");
-    const ReadResponse<ReadResponseValue> res{
-        .success = false,
-    };
-
-    io_.Send(from_address, request_id, res);
-
-    Cron();
-
-    return std::nullopt;
-  }
-
-  // Followers should respond with a redirection, similar to the Follower + WriteRequest response below
-  std::optional<Role> Handle(Follower &follower, ReadRequest<ReadOperation> && /* variable */, RequestId request_id,
-                             Address from_address) {
-    Log("redirecting client to known Leader with port ", follower.leader_address.last_known_port);
-
-    const ReadResponse<ReadResponseValue> res{
-        .success = false,
-        .retry_leader = follower.leader_address,
-    };
-
-    io_.Send(from_address, request_id, res);
-
-    return std::nullopt;
-  }
-
-  // Raft paper - 8
-  // When a client first starts up, it connects to a randomly chosen
-  // server. If the client’s first choice is not the leader, that
-  // server will reject the client’s request and supply information
-  // about the most recent leader it has heard from.
-  std::optional<Role> Handle(Follower &follower, WriteRequest<WriteOperation> && /* variable */, RequestId request_id,
-                             Address from_address) {
-    Log("redirecting client to known Leader with port ", follower.leader_address.last_known_port);
-
-    const WriteResponse<WriteResponseValue> res{
-        .success = false,
-        .retry_leader = follower.leader_address,
-    };
-
-    io_.Send(from_address, request_id, res);
-
-    return std::nullopt;
-  }
-
-  std::optional<Role> Handle(Candidate & /* variable */, WriteRequest<WriteOperation> && /* variable */,
-                             RequestId request_id, Address from_address) {
-    Log("received WriteRequest - not redirecting because no Leader is known");
-
-    const WriteResponse<WriteResponseValue> res{
-        .success = false,
-    };
-
-    io_.Send(from_address, request_id, res);
-
-    Cron();
-
-    return std::nullopt;
-  }
-
-  // only leaders actually handle replication requests from clients
-  std::optional<Role> Handle(Leader &leader, WriteRequest<WriteOperation> &&req, RequestId request_id,
-                             Address from_address) {
-    Log("handling WriteRequest");
-
-    // we are the leader. add item to log and send Append to peers
-    MG_ASSERT(state_.term >= LastLogTerm());
-    state_.log.emplace_back(std::pair(state_.term, std::move(req.operation)));
-
-    LogIndex log_index = state_.log.size() - 1;
-
-    PendingClientRequest pcr{
-        .request_id = request_id,
-        .address = from_address,
-        .received_at = io_.Now(),
-    };
-
-    leader.pending_client_requests.emplace(log_index, pcr);
-
-    if (peers_.empty()) {
-      BumpCommitIndexAndReplyToClients(leader);
-    } else {
-      BroadcastAppendEntries(leader.followers);
-    }
-
-    return std::nullopt;
-  }
-};
-
-};  // namespace memgraph::io::rsm

src/io/rsm/rsm_client.hpp

@@ -1,136 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <iostream>
-#include <optional>
-#include <vector>
-
-#include "io/address.hpp"
-#include "io/rsm/raft.hpp"
-#include "utils/result.hpp"
-
-namespace memgraph::io::rsm {
-
-using memgraph::io::Address;
-using memgraph::io::Duration;
-using memgraph::io::ResponseEnvelope;
-using memgraph::io::ResponseFuture;
-using memgraph::io::ResponseResult;
-using memgraph::io::Time;
-using memgraph::io::TimedOut;
-using memgraph::io::rsm::ReadRequest;
-using memgraph::io::rsm::ReadResponse;
-using memgraph::io::rsm::WriteRequest;
-using memgraph::io::rsm::WriteResponse;
-using memgraph::utils::BasicResult;
-
-template <typename IoImpl, typename WriteRequestT, typename WriteResponseT, typename ReadRequestT,
-          typename ReadResponseT>
-class RsmClient {
-  using ServerPool = std::vector<Address>;
-
-  Io<IoImpl> io_;
-  Address leader_;
-  ServerPool server_addrs_;
-
-  template <typename ResponseT>
-  void PossiblyRedirectLeader(const ResponseT &response) {
-    if (response.retry_leader) {
-      MG_ASSERT(!response.success, "retry_leader should never be set for successful responses");
-      leader_ = response.retry_leader.value();
-      spdlog::debug("client redirected to leader server {}", leader_.ToString());
-    } else if (!response.success) {
-      std::uniform_int_distribution<size_t> addr_distrib(0, (server_addrs_.size() - 1));
-      size_t addr_index = io_.Rand(addr_distrib);
-      leader_ = server_addrs_[addr_index];
-
-      spdlog::debug(
-          "client NOT redirected to leader server despite our success failing to be processed (it probably was sent to "
-          "a RSM Candidate) trying a random one at index {} with address {}",
-          addr_index, leader_.ToString());
-    }
-  }
-
- public:
-  RsmClient(Io<IoImpl> io, Address leader, ServerPool server_addrs)
-      : io_{io}, leader_{leader}, server_addrs_{server_addrs} {}
-
-  RsmClient() = delete;
-
-  BasicResult<TimedOut, WriteResponseT> SendWriteRequest(WriteRequestT req) {
-    WriteRequest<WriteRequestT> client_req;
-    client_req.operation = req;
-
-    const Duration overall_timeout = io_.GetDefaultTimeout();
-    const Time before = io_.Now();
-
-    do {
-      spdlog::debug("client sending WriteRequest to Leader {}", leader_.ToString());
-      ResponseFuture<WriteResponse<WriteResponseT>> response_future =
-          io_.template Request<WriteRequest<WriteRequestT>, WriteResponse<WriteResponseT>>(leader_, client_req);
-      ResponseResult<WriteResponse<WriteResponseT>> response_result = std::move(response_future).Wait();
-
-      if (response_result.HasError()) {
-        spdlog::debug("client timed out while trying to communicate with leader server {}", leader_.ToString());
-        return response_result.GetError();
-      }
-
-      ResponseEnvelope<WriteResponse<WriteResponseT>> &&response_envelope = std::move(response_result.GetValue());
-      WriteResponse<WriteResponseT> &&write_response = std::move(response_envelope.message);
-
-      if (write_response.success) {
-        return std::move(write_response.write_return);
-      }
-
-      PossiblyRedirectLeader(write_response);
-    } while (io_.Now() < before + overall_timeout);
-
-    return TimedOut{};
-  }
-
-  BasicResult<TimedOut, ReadResponseT> SendReadRequest(ReadRequestT req) {
-    ReadRequest<ReadRequestT> read_req;
-    read_req.operation = req;
-
-    const Duration overall_timeout = io_.GetDefaultTimeout();
-    const Time before = io_.Now();
-
-    do {
-      spdlog::debug("client sending ReadRequest to Leader {}", leader_.ToString());
-
-      ResponseFuture<ReadResponse<ReadResponseT>> get_response_future =
-          io_.template Request<ReadRequest<ReadRequestT>, ReadResponse<ReadResponseT>>(leader_, read_req);
-
-      // receive response
-      ResponseResult<ReadResponse<ReadResponseT>> get_response_result = std::move(get_response_future).Wait();
-
-      if (get_response_result.HasError()) {
-        spdlog::debug("client timed out while trying to communicate with leader server {}", leader_.ToString());
-        return get_response_result.GetError();
-      }
-
-      ResponseEnvelope<ReadResponse<ReadResponseT>> &&get_response_envelope = std::move(get_response_result.GetValue());
-      ReadResponse<ReadResponseT> &&read_get_response = std::move(get_response_envelope.message);
-
-      if (read_get_response.success) {
-        return std::move(read_get_response.read_return);
-      }
-
-      PossiblyRedirectLeader(read_get_response);
-    } while (io_.Now() < before + overall_timeout);
-
-    return TimedOut{};
-  }
-};
-
-}  // namespace memgraph::io::rsm

src/io/rsm/shard_rsm.hpp

@@ -1,155 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-/// The ShardRsm is a simple in-memory raft-backed kv store that can be used for simple testing
-/// and implementation of some query engine logic before storage engines are fully implemented.
-///
-/// To implement multiple read and write commands, change the StorageRead* and StorageWrite* requests
-/// and responses to a std::variant of the different options, and route them to specific handlers in
-/// the ShardRsm's Read and Apply methods. Remember that Read is called immediately when the Raft
-/// leader receives the request, and does not replicate anything over Raft. Apply is called only
-/// AFTER the StorageWriteRequest is replicated to a majority of Raft peers, and the result of calling
-/// ShardRsm::Apply(StorageWriteRequest) is returned to the client that submitted the request.
-
-#include <deque>
-#include <iostream>
-#include <map>
-#include <optional>
-#include <set>
-#include <thread>
-#include <vector>
-
-#include "coordinator/hybrid_logical_clock.hpp"
-#include "io/address.hpp"
-#include "io/rsm/raft.hpp"
-#include "storage/v3/id_types.hpp"
-#include "storage/v3/property_value.hpp"
-#include "utils/logging.hpp"
-
-namespace memgraph::io::rsm {
-
-using memgraph::coordinator::Hlc;
-using memgraph::storage::v3::LabelId;
-using memgraph::storage::v3::PropertyValue;
-
-using ShardRsmKey = std::vector<PropertyValue>;
-
-struct StorageWriteRequest {
-  LabelId label_id;
-  Hlc transaction_id;
-  ShardRsmKey key;
-  std::optional<int> value;
-};
-
-struct StorageWriteResponse {
-  bool shard_rsm_success;
-  std::optional<int> last_value;
-  // Only has a value if the given shard does not contain the requested key
-  std::optional<Hlc> latest_known_shard_map_version{std::nullopt};
-};
-
-struct StorageReadRequest {
-  LabelId label_id;
-  Hlc transaction_id;
-  ShardRsmKey key;
-};
-
-struct StorageReadResponse {
-  bool shard_rsm_success;
-  std::optional<int> value;
-  // Only has a value if the given shard does not contain the requested key
-  std::optional<Hlc> latest_known_shard_map_version{std::nullopt};
-};
-
-class ShardRsm {
-  std::map<ShardRsmKey, int> state_;
-  ShardRsmKey minimum_key_;
-  std::optional<ShardRsmKey> maximum_key_{std::nullopt};
-  Hlc shard_map_version_;
-
-  // The key is not located in this shard
-  bool IsKeyInRange(const ShardRsmKey &key) const {
-    if (maximum_key_) [[likely]] {
-      return (key >= minimum_key_ && key <= maximum_key_);
-    }
-    return key >= minimum_key_;
-  }
-
- public:
-  StorageReadResponse Read(StorageReadRequest request) const {
-    StorageReadResponse ret;
-
-    if (!IsKeyInRange(request.key)) {
-      ret.latest_known_shard_map_version = shard_map_version_;
-      ret.shard_rsm_success = false;
-    } else if (state_.contains(request.key)) {
-      ret.value = state_.at(request.key);
-      ret.shard_rsm_success = true;
-    } else {
-      ret.shard_rsm_success = false;
-      ret.value = std::nullopt;
-    }
-    return ret;
-  }
-
-  StorageWriteResponse Apply(StorageWriteRequest request) {
-    StorageWriteResponse ret;
-
-    // Key is outside the prohibited range
-    if (!IsKeyInRange(request.key)) {
-      ret.latest_known_shard_map_version = shard_map_version_;
-      ret.shard_rsm_success = false;
-    }
-    // Key exist
-    else if (state_.contains(request.key)) {
-      auto &val = state_[request.key];
-
-      /*
-       *   Delete
-       */
-      if (!request.value) {
-        ret.shard_rsm_success = true;
-        ret.last_value = val;
-        state_.erase(state_.find(request.key));
-      }
-
-      /*
-       *   Update
-       */
-      // Does old_value match?
-      if (request.value == val) {
-        ret.last_value = val;
-        ret.shard_rsm_success = true;
-
-        val = request.value.value();
-
-      } else {
-        ret.last_value = val;
-        ret.shard_rsm_success = false;
-      }
-    }
-    /*
-     *   Create
-     */
-    else {
-      ret.last_value = std::nullopt;
-      ret.shard_rsm_success = true;
-
-      state_.emplace(request.key, request.value.value());
-    }
-
-    return ret;
-  }
-};
-
-}  // namespace memgraph::io::rsm

src/io/simulator/CMakeLists.txt

@@ -1,8 +0,0 @@
-set(io_simulator_sources
-    simulator_handle.cpp)
-
-find_package(fmt REQUIRED)
-find_package(Threads REQUIRED)
-
-add_library(mg-io-simulator STATIC ${io_simulator_sources})
-target_link_libraries(mg-io-simulator stdc++fs Threads::Threads fmt::fmt mg-utils)

src/io/simulator/simulator.hpp

@@ -1,51 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <memory>
-#include <random>
-
-#include "io/address.hpp"
-#include "io/simulator/simulator_config.hpp"
-#include "io/simulator/simulator_handle.hpp"
-#include "io/simulator/simulator_transport.hpp"
-
-namespace memgraph::io::simulator {
-class Simulator {
-  std::mt19937 rng_;
-  std::shared_ptr<SimulatorHandle> simulator_handle_;
-  uint16_t auto_port_ = 0;
-
- public:
-  explicit Simulator(SimulatorConfig config)
-      : rng_(std::mt19937{config.rng_seed}), simulator_handle_{std::make_shared<SimulatorHandle>(config)} {}
-
-  void ShutDown() { simulator_handle_->ShutDown(); }
-
-  Io<SimulatorTransport> RegisterNew() {
-    Address address = Address::TestAddress(auto_port_++);
-    return Register(address);
-  }
-
-  Io<SimulatorTransport> Register(Address address) {
-    std::uniform_int_distribution<uint64_t> seed_distrib;
-    uint64_t seed = seed_distrib(rng_);
-    return Io{SimulatorTransport{simulator_handle_, address, seed}, address};
-  }
-
-  void IncrementServerCountAndWaitForQuiescentState(Address address) {
-    simulator_handle_->IncrementServerCountAndWaitForQuiescentState(address);
-  }
-
-  SimulatorStats Stats() { return simulator_handle_->Stats(); }
-};
-};  // namespace memgraph::io::simulator

src/io/simulator/simulator_config.hpp

@@ -1,30 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <chrono>
-
-#include "io/time.hpp"
-
-namespace memgraph::io::simulator {
-
-using memgraph::io::Time;
-
-struct SimulatorConfig {
-  uint8_t drop_percent = 0;
-  bool perform_timeouts = false;
-  bool scramble_messages = true;
-  uint64_t rng_seed = 0;
-  Time start_time = Time::min();
-  Time abort_time = Time::max();
-};
-};  // namespace memgraph::io::simulator

src/io/simulator/simulator_handle.cpp

@@ -1,142 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#include "io/simulator/simulator_handle.hpp"
-#include "io/address.hpp"
-#include "io/errors.hpp"
-#include "io/simulator/simulator_config.hpp"
-#include "io/simulator/simulator_stats.hpp"
-#include "io/time.hpp"
-#include "io/transport.hpp"
-
-namespace memgraph::io::simulator {
-
-using memgraph::io::Duration;
-using memgraph::io::Time;
-
-void SimulatorHandle::ShutDown() {
-  std::unique_lock<std::mutex> lock(mu_);
-  should_shut_down_ = true;
-  cv_.notify_all();
-}
-
-bool SimulatorHandle::ShouldShutDown() const {
-  std::unique_lock<std::mutex> lock(mu_);
-  return should_shut_down_;
-}
-
-void SimulatorHandle::IncrementServerCountAndWaitForQuiescentState(Address address) {
-  std::unique_lock<std::mutex> lock(mu_);
-  server_addresses_.insert(address);
-
-  while (true) {
-    const size_t blocked_servers = blocked_on_receive_.size();
-
-    const bool all_servers_blocked = blocked_servers == server_addresses_.size();
-
-    if (all_servers_blocked) {
-      return;
-    }
-
-    cv_.wait(lock);
-  }
-}
-
-bool SimulatorHandle::MaybeTickSimulator() {
-  std::unique_lock<std::mutex> lock(mu_);
-
-  const size_t blocked_servers = blocked_on_receive_.size();
-
-  if (blocked_servers < server_addresses_.size()) {
-    // we only need to advance the simulator when all
-    // servers have reached a quiescent state, blocked
-    // on their own futures or receive methods.
-    return false;
-  }
-
-  stats_.simulator_ticks++;
-
-  cv_.notify_all();
-
-  TimeoutPromisesPastDeadline();
-
-  if (in_flight_.empty()) {
-    // return early here because there are no messages to schedule
-
-    // We tick the clock forward when all servers are blocked but
-    // there are no in-flight messages to schedule delivery of.
-    std::poisson_distribution<> time_distrib(50);
-    Duration clock_advance = std::chrono::microseconds{time_distrib(rng_)};
-    cluster_wide_time_microseconds_ += clock_advance;
-
-    MG_ASSERT(cluster_wide_time_microseconds_ < config_.abort_time,
-              "Cluster has executed beyond its configured abort_time, and something may be failing to make progress "
-              "in an expected amount of time.");
-    return true;
-  }
-
-  if (config_.scramble_messages) {
-    // scramble messages
-    std::uniform_int_distribution<size_t> swap_distrib(0, in_flight_.size() - 1);
-    const size_t swap_index = swap_distrib(rng_);
-    std::swap(in_flight_[swap_index], in_flight_.back());
-  }
-
-  auto [to_address, opaque_message] = std::move(in_flight_.back());
-  in_flight_.pop_back();
-
-  std::uniform_int_distribution<int> drop_distrib(0, 99);
-  const int drop_threshold = drop_distrib(rng_);
-  const bool should_drop = drop_threshold < config_.drop_percent;
-
-  if (should_drop) {
-    stats_.dropped_messages++;
-  }
-
-  PromiseKey promise_key{.requester_address = to_address,
-                         .request_id = opaque_message.request_id,
-                         .replier_address = opaque_message.from_address};
-
-  if (promises_.contains(promise_key)) {
-    // complete waiting promise if it's there
-    DeadlineAndOpaquePromise dop = std::move(promises_.at(promise_key));
-    promises_.erase(promise_key);
-
-    const bool normal_timeout = config_.perform_timeouts && (dop.deadline < cluster_wide_time_microseconds_);
-
-    if (should_drop || normal_timeout) {
-      stats_.timed_out_requests++;
-      dop.promise.TimeOut();
-    } else {
-      stats_.total_responses++;
-      dop.promise.Fill(std::move(opaque_message));
-    }
-  } else if (should_drop) {
-    // don't add it anywhere, let it drop
-  } else {
-    // add to can_receive_ if not
-    const auto &[om_vec, inserted] = can_receive_.try_emplace(to_address, std::vector<OpaqueMessage>());
-    om_vec->second.emplace_back(std::move(opaque_message));
-  }
-
-  return true;
-}
-
-Time SimulatorHandle::Now() const {
-  std::unique_lock<std::mutex> lock(mu_);
-  return cluster_wide_time_microseconds_;
-}
-
-SimulatorStats SimulatorHandle::Stats() {
-  std::unique_lock<std::mutex> lock(mu_);
-  return stats_;
-}
-}  // namespace memgraph::io::simulator

src/io/simulator/simulator_handle.hpp

@@ -1,177 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <any>
-#include <compare>
-#include <iostream>
-#include <map>
-#include <memory>
-#include <optional>
-#include <set>
-#include <utility>
-#include <variant>
-#include <vector>
-
-#include "io/address.hpp"
-#include "io/errors.hpp"
-#include "io/message_conversion.hpp"
-#include "io/simulator/simulator_config.hpp"
-#include "io/simulator/simulator_stats.hpp"
-#include "io/time.hpp"
-#include "io/transport.hpp"
-
-namespace memgraph::io::simulator {
-
-class SimulatorHandle {
-  mutable std::mutex mu_{};
-  mutable std::condition_variable cv_;
-
-  // messages that have not yet been scheduled or dropped
-  std::vector<std::pair<Address, OpaqueMessage>> in_flight_;
-
-  // the responses to requests that are being waited on
-  std::map<PromiseKey, DeadlineAndOpaquePromise> promises_;
-
-  // messages that are sent to servers that may later receive them
-  std::map<Address, std::vector<OpaqueMessage>> can_receive_;
-
-  Time cluster_wide_time_microseconds_;
-  bool should_shut_down_ = false;
-  SimulatorStats stats_;
-  std::set<Address> blocked_on_receive_;
-  std::set<Address> server_addresses_;
-  std::mt19937 rng_;
-  SimulatorConfig config_;
-
-  void TimeoutPromisesPastDeadline() {
-    const Time now = cluster_wide_time_microseconds_;
-    for (auto it = promises_.begin(); it != promises_.end();) {
-      auto &[promise_key, dop] = *it;
-      if (dop.deadline < now) {
-        spdlog::info("timing out request from requester {} to replier {}.", promise_key.requester_address.ToString(),
-                     promise_key.replier_address.ToString());
-        std::move(dop).promise.TimeOut();
-        it = promises_.erase(it);
-
-        stats_.timed_out_requests++;
-      } else {
-        ++it;
-      }
-    }
-  }
-
- public:
-  explicit SimulatorHandle(SimulatorConfig config)
-      : cluster_wide_time_microseconds_(config.start_time), rng_(config.rng_seed), config_(config) {}
-
-  void IncrementServerCountAndWaitForQuiescentState(Address address);
-
-  /// This method causes most of the interesting simulation logic to happen, wrt network behavior.
-  /// It checks to see if all background "server" threads are blocked on new messages, and if so,
-  /// it will decide whether to drop, reorder, or deliver in-flight messages based on the SimulatorConfig
-  /// that was used to create the Simulator.
-  bool MaybeTickSimulator();
-
-  void ShutDown();
-
-  bool ShouldShutDown() const;
-
-  template <Message Request, Message Response>
-  void SubmitRequest(Address to_address, Address from_address, RequestId request_id, Request &&request,
-                     Duration timeout, ResponsePromise<Response> &&promise) {
-    std::unique_lock<std::mutex> lock(mu_);
-
-    const Time deadline = cluster_wide_time_microseconds_ + timeout;
-
-    std::any message(request);
-    OpaqueMessage om{.to_address = to_address,
-                     .from_address = from_address,
-                     .request_id = request_id,
-                     .message = std::move(message)};
-    in_flight_.emplace_back(std::make_pair(to_address, std::move(om)));
-
-    PromiseKey promise_key{.requester_address = from_address, .request_id = request_id, .replier_address = to_address};
-    OpaquePromise opaque_promise(std::move(promise).ToUnique());
-    DeadlineAndOpaquePromise dop{.deadline = deadline, .promise = std::move(opaque_promise)};
-    promises_.emplace(std::move(promise_key), std::move(dop));
-
-    stats_.total_messages++;
-    stats_.total_requests++;
-
-    cv_.notify_all();
-  }
-
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) RequestResult<Ms...> Receive(const Address &receiver, Duration timeout) {
-    std::unique_lock<std::mutex> lock(mu_);
-
-    blocked_on_receive_.emplace(receiver);
-
-    const Time deadline = cluster_wide_time_microseconds_ + timeout;
-
-    while (!should_shut_down_ && (cluster_wide_time_microseconds_ < deadline)) {
-      if (can_receive_.contains(receiver)) {
-        std::vector<OpaqueMessage> &can_rx = can_receive_.at(receiver);
-        if (!can_rx.empty()) {
-          OpaqueMessage message = std::move(can_rx.back());
-          can_rx.pop_back();
-
-          // TODO(tyler) search for item in can_receive_ that matches the desired types, rather
-          // than asserting that the last item in can_rx matches.
-          auto m_opt = std::move(message).Take<Ms...>();
-
-          blocked_on_receive_.erase(receiver);
-
-          return std::move(m_opt).value();
-        }
-      }
-
-      lock.unlock();
-      bool made_progress = MaybeTickSimulator();
-      lock.lock();
-      if (!should_shut_down_ && !made_progress) {
-        cv_.wait(lock);
-      }
-    }
-
-    blocked_on_receive_.erase(receiver);
-
-    return TimedOut{};
-  }
-
-  template <Message M>
-  void Send(Address to_address, Address from_address, RequestId request_id, M message) {
-    std::unique_lock<std::mutex> lock(mu_);
-    std::any message_any(std::move(message));
-    OpaqueMessage om{.to_address = to_address,
-                     .from_address = from_address,
-                     .request_id = request_id,
-                     .message = std::move(message_any)};
-    in_flight_.emplace_back(std::make_pair(std::move(to_address), std::move(om)));
-
-    stats_.total_messages++;
-
-    cv_.notify_all();
-  }
-
-  Time Now() const;
-
-  template <class D = std::poisson_distribution<>, class Return = uint64_t>
-  Return Rand(D distrib) {
-    std::unique_lock<std::mutex> lock(mu_);
-    return distrib(rng_);
-  }
-
-  SimulatorStats Stats();
-};
-};  // namespace memgraph::io::simulator

src/io/simulator/simulator_stats.hpp

@@ -1,25 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <cstdint>
-
-namespace memgraph::io::simulator {
-struct SimulatorStats {
-  uint64_t total_messages = 0;
-  uint64_t dropped_messages = 0;
-  uint64_t timed_out_requests = 0;
-  uint64_t total_requests = 0;
-  uint64_t total_responses = 0;
-  uint64_t simulator_ticks = 0;
-};
-};  // namespace memgraph::io::simulator

src/io/simulator/simulator_transport.hpp

@@ -1,67 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <memory>
-#include <utility>
-
-#include "io/address.hpp"
-#include "io/simulator/simulator_handle.hpp"
-#include "io/time.hpp"
-
-namespace memgraph::io::simulator {
-
-using memgraph::io::Duration;
-using memgraph::io::Time;
-
-class SimulatorTransport {
-  std::shared_ptr<SimulatorHandle> simulator_handle_;
-  const Address address_;
-  std::mt19937 rng_;
-
- public:
-  SimulatorTransport(std::shared_ptr<SimulatorHandle> simulator_handle, Address address, uint64_t seed)
-      : simulator_handle_(simulator_handle), address_(address), rng_(std::mt19937{seed}) {}
-
-  template <Message RequestT, Message ResponseT>
-  ResponseFuture<ResponseT> Request(Address to_address, Address from_address, uint64_t request_id, RequestT request,
-                                    Duration timeout) {
-    std::function<bool()> maybe_tick_simulator = [this] { return simulator_handle_->MaybeTickSimulator(); };
-    auto [future, promise] =
-        memgraph::io::FuturePromisePairWithNotifier<ResponseResult<ResponseT>>(maybe_tick_simulator);
-
-    simulator_handle_->SubmitRequest(to_address, from_address, request_id, std::move(request), timeout,
-                                     std::move(promise));
-
-    return std::move(future);
-  }
-
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) RequestResult<Ms...> Receive(Address receiver_address, Duration timeout) {
-    return simulator_handle_->template Receive<Ms...>(receiver_address, timeout);
-  }
-
-  template <Message M>
-  void Send(Address to_address, Address from_address, uint64_t request_id, M message) {
-    return simulator_handle_->template Send<M>(to_address, from_address, request_id, message);
-  }
-
-  Time Now() const { return simulator_handle_->Now(); }
-
-  bool ShouldShutDown() const { return simulator_handle_->ShouldShutDown(); }
-
-  template <class D = std::poisson_distribution<>, class Return = uint64_t>
-  Return Rand(D distrib) {
-    return distrib(rng_);
-  }
-};
-};  // namespace memgraph::io::simulator

src/io/time.hpp

@@ -1,21 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <chrono>
-
-namespace memgraph::io {
-
-using Duration = std::chrono::microseconds;
-using Time = std::chrono::time_point<std::chrono::system_clock, Duration>;
-
-}  // namespace memgraph::io

src/io/transport.hpp

@@ -1,144 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <chrono>
-#include <concepts>
-#include <random>
-#include <variant>
-
-#include "io/address.hpp"
-#include "io/errors.hpp"
-#include "io/future.hpp"
-#include "io/time.hpp"
-#include "utils/result.hpp"
-
-namespace memgraph::io {
-
-using memgraph::utils::BasicResult;
-
-// TODO(tyler) ensure that Message continues to represent
-// reasonable constraints around message types over time,
-// as we adapt things to use Thrift-generated message types.
-template <typename T>
-concept Message = std::same_as<T, std::decay_t<T>>;
-
-using RequestId = uint64_t;
-
-template <Message M>
-struct ResponseEnvelope {
-  M message;
-  RequestId request_id;
-  Address to_address;
-  Address from_address;
-};
-
-template <Message M>
-using ResponseResult = BasicResult<TimedOut, ResponseEnvelope<M>>;
-
-template <Message M>
-using ResponseFuture = memgraph::io::Future<ResponseResult<M>>;
-
-template <Message M>
-using ResponsePromise = memgraph::io::Promise<ResponseResult<M>>;
-
-template <Message... Ms>
-struct RequestEnvelope {
-  std::variant<Ms...> message;
-  RequestId request_id;
-  Address to_address;
-  Address from_address;
-};
-
-template <Message... Ms>
-using RequestResult = BasicResult<TimedOut, RequestEnvelope<Ms...>>;
-
-template <typename I>
-class Io {
-  I implementation_;
-  Address address_;
-  RequestId request_id_counter_ = 0;
-  Duration default_timeout_ = std::chrono::microseconds{100000};
-
- public:
-  Io(I io, Address address) : implementation_(io), address_(address) {}
-
-  /// Set the default timeout for all requests that are issued
-  /// without an explicit timeout set.
-  void SetDefaultTimeout(Duration timeout) { default_timeout_ = timeout; }
-
-  /// Returns the current default timeout for this Io instance.
-  Duration GetDefaultTimeout() { return default_timeout_; }
-
-  /// Issue a request with an explicit timeout in microseconds provided. This tends to be used by clients.
-  template <Message RequestT, Message ResponseT>
-  ResponseFuture<ResponseT> RequestWithTimeout(Address address, RequestT request, Duration timeout) {
-    const RequestId request_id = ++request_id_counter_;
-    const Address from_address = address_;
-    return implementation_.template Request<RequestT, ResponseT>(address, from_address, request_id, request, timeout);
-  }
-
-  /// Issue a request that times out after the default timeout. This tends
-  /// to be used by clients.
-  template <Message RequestT, Message ResponseT>
-  ResponseFuture<ResponseT> Request(Address to_address, RequestT request) {
-    const RequestId request_id = ++request_id_counter_;
-    const Duration timeout = default_timeout_;
-    const Address from_address = address_;
-    return implementation_.template Request<RequestT, ResponseT>(to_address, from_address, request_id,
-                                                                 std::move(request), timeout);
-  }
-
-  /// Wait for an explicit number of microseconds for a request of one of the
-  /// provided types to arrive. This tends to be used by servers.
-  template <Message... Ms>
-  RequestResult<Ms...> ReceiveWithTimeout(Duration timeout) {
-    return implementation_.template Receive<Ms...>(address_, timeout);
-  }
-
-  /// Wait the default number of microseconds for a request of one of the
-  /// provided types to arrive. This tends to be used by servers.
-  template <Message... Ms>
-  requires(sizeof...(Ms) > 0) RequestResult<Ms...> Receive() {
-    const Duration timeout = default_timeout_;
-    return implementation_.template Receive<Ms...>(address_, timeout);
-  }
-
-  /// Send a message in a best-effort fashion. This is used for messaging where
-  /// responses are not necessarily expected, and for servers to respond to requests.
-  /// If you need reliable delivery, this must be built on-top. TCP is not enough for most use cases.
-  template <Message M>
-  void Send(Address to_address, RequestId request_id, M message) {
-    Address from_address = address_;
-    return implementation_.template Send<M>(to_address, from_address, request_id, std::move(message));
-  }
-
-  /// The current system time. This time source should be preferred over any other,
-  /// because it lets us deterministically control clocks from tests for making
-  /// things like timeouts deterministic.
-  Time Now() const { return implementation_.Now(); }
-
-  /// Returns true if the system should shut-down.
-  bool ShouldShutDown() const { return implementation_.ShouldShutDown(); }
-
-  /// Returns a random number within the specified distribution.
-  template <class D = std::poisson_distribution<>, class Return = uint64_t>
-  Return Rand(D distrib) {
-    return implementation_.template Rand<D, Return>(distrib);
-  }
-
-  Address GetAddress() { return address_; }
-  void SetAddress(Address address) { address_ = address; }
-
-  Io<I> ForkLocal() { return Io(implementation_, address_.ForkUniqueAddress()); }
-};
-};  // namespace memgraph::io

src/machine_manager/machine_config.hpp

@@ -1,42 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <boost/asio/ip/tcp.hpp>
-#include "io/address.hpp"
-#include "storage/v3/property_value.hpp"
-#include "storage/v3/schemas.hpp"
-
-namespace memgraph::machine_manager {
-
-using memgraph::io::Address;
-using memgraph::storage::v3::SchemaProperty;
-using CompoundKey = std::vector<memgraph::storage::v3::PropertyValue>;
-
-struct InitialLabelSpace {
-  std::string label_name;
-  std::vector<SchemaProperty> schema;
-  size_t replication_factor;
-  std::vector<CompoundKey> split_points;
-};
-
-struct MachineConfig {
-  std::vector<InitialLabelSpace> initial_label_spaces;
-  std::vector<Address> coordinator_addresses;
-  bool is_storage;
-  bool is_coordinator;
-  bool is_query_engine;
-  boost::asio::ip::address listen_ip;
-  uint16_t listen_port;
-};
-
-}  // namespace memgraph::machine_manager

src/machine_manager/machine_manager.hpp

@@ -1,177 +0,0 @@
-// Copyright 2022 Memgraph Ltd.
-//
-// Use of this software is governed by the Business Source License
-// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
-// License, and you may not use this file except in compliance with the Business Source License.
-//
-// As of the Change Date specified in that file, in accordance with
-// the Business Source License, use of this software will be governed
-// by the Apache License, Version 2.0, included in the file
-// licenses/APL.txt.
-
-#pragma once
-
-#include <coordinator/coordinator_rsm.hpp>
-#include <io/message_conversion.hpp>
-#include <io/messages.hpp>
-#include <io/rsm/rsm_client.hpp>
-#include <io/time.hpp>
-#include <machine_manager/machine_config.hpp>
-#include <storage/v3/shard_manager.hpp>
-
-namespace memgraph::machine_manager {
-
-using memgraph::coordinator::Coordinator;
-using memgraph::coordinator::CoordinatorReadRequests;
-using memgraph::coordinator::CoordinatorReadResponses;
-using memgraph::coordinator::CoordinatorRsm;
-using memgraph::coordinator::CoordinatorWriteRequests;
-using memgraph::coordinator::CoordinatorWriteResponses;
-using memgraph::io::ConvertVariant;
-using memgraph::io::Duration;
-using memgraph::io::RequestId;
-using memgraph::io::Time;
-using memgraph::io::messages::CoordinatorMessages;
-using memgraph::io::messages::ShardManagerMessages;
-using memgraph::io::messages::ShardMessages;
-using memgraph::io::messages::StorageReadRequest;
-using memgraph::io::messages::StorageWriteRequest;
-using memgraph::io::rsm::AppendRequest;
-using memgraph::io::rsm::AppendResponse;
-using memgraph::io::rsm::ReadRequest;
-using memgraph::io::rsm::VoteRequest;
-using memgraph::io::rsm::VoteResponse;
-using memgraph::io::rsm::WriteRequest;
-using memgraph::io::rsm::WriteResponse;
-using memgraph::storage::v3::ShardManager;
-
-/// The MachineManager is responsible for:
-/// * starting the entire system and ensuring that high-level
-///   operational requirements continue to be met
-/// * acting as a machine's single caller of Io::Receive
-/// * routing incoming messages from the Io interface to the
-///   appropriate Coordinator or to the StorageManager
-///   (it's not necessary to route anything in this layer
-///   to the query engine because the query engine only
-///   communicates using higher-level Futures that will
-///   be filled immediately when the response comes in
-///   at the lower-level transport layer.
-///
-/// Every storage engine has exactly one RsmEngine.
-template <typename IoImpl>
-class MachineManager {
-  io::Io<IoImpl> io_;
-  MachineConfig config_;
-  CoordinatorRsm<IoImpl> coordinator_;
-  ShardManager<IoImpl> shard_manager_;
-  Time next_cron_;
-
- public:
-  // TODO initialize ShardManager with "real" coordinator addresses instead of io.GetAddress
-  // which is only true for single-machine config.
-  MachineManager(io::Io<IoImpl> io, MachineConfig config, Coordinator coordinator)
-      : io_(io),
-        config_(config),
-        coordinator_{std::move(io.ForkLocal()), {}, std::move(coordinator)},
-        shard_manager_(ShardManager{io.ForkLocal(), coordinator_.GetAddress()}) {}
-
-  Address CoordinatorAddress() { return coordinator_.GetAddress(); }
-
-  void Run() {
-    while (!io_.ShouldShutDown()) {
-      const auto now = io_.Now();
-
-      if (now >= next_cron_) {
-        next_cron_ = Cron();
-      }
-
-      Duration receive_timeout = next_cron_ - now;
-
-      // Note: this parameter pack must be kept in-sync with the ReceiveWithTimeout parameter pack below
-      using AllMessages =
-          std::variant<ReadRequest<CoordinatorReadRequests>, AppendRequest<CoordinatorWriteRequests>, AppendResponse,
-                       WriteRequest<CoordinatorWriteRequests>, VoteRequest, VoteResponse,
-                       WriteResponse<CoordinatorWriteResponses>, ReadRequest<StorageReadRequest>,
-                       AppendRequest<StorageWriteRequest>, WriteRequest<StorageWriteRequest>>;
-
-      spdlog::info("MM waiting on Receive");
-
-      // Note: this parameter pack must be kept in-sync with the AllMessages parameter pack above
-      auto request_result = io_.template ReceiveWithTimeout<
-          ReadRequest<CoordinatorReadRequests>, AppendRequest<CoordinatorWriteRequests>, AppendResponse,
-          WriteRequest<CoordinatorWriteRequests>, VoteRequest, VoteResponse, WriteResponse<CoordinatorWriteResponses>,
-          ReadRequest<StorageReadRequest>, AppendRequest<StorageWriteRequest>, WriteRequest<StorageWriteRequest>>(
-          receive_timeout);
-
-      if (request_result.HasError()) {
-        // time to do Cron
-        spdlog::info("MM got timeout");
-        continue;
-      }
-
-      auto &&request_envelope = std::move(request_result.GetValue());
-
-      spdlog::info("MM got message to {}", request_envelope.to_address.ToString());
-
-      // If message is for the coordinator, cast it to subset and pass it to the coordinator
-      bool to_coordinator = coordinator_.GetAddress() == request_envelope.to_address;
-      spdlog::info("coordinator: {}", coordinator_.GetAddress().ToString());
-      if (to_coordinator) {
-        std::optional<CoordinatorMessages> conversion_attempt =
-            ConvertVariant<AllMessages, ReadRequest<CoordinatorReadRequests>, AppendRequest<CoordinatorWriteRequests>,
-                           AppendResponse, WriteRequest<CoordinatorWriteRequests>, VoteRequest, VoteResponse>(
-                std::move(request_envelope.message));
-
-        MG_ASSERT(conversion_attempt.has_value(), "coordinator message conversion failed");
-
-        spdlog::info("got coordinator message");
-
-        CoordinatorMessages &&cm = std::move(conversion_attempt.value());
-
-        coordinator_.Handle(std::forward<CoordinatorMessages>(cm), request_envelope.request_id,
-                            request_envelope.from_address);
-        continue;
-      }
-
-      bool to_sm = shard_manager_.GetAddress() == request_envelope.to_address;
-      spdlog::info("smm: {}", shard_manager_.GetAddress().ToString());
-      if (to_sm) {
-        std::optional<ShardManagerMessages> conversion_attempt =
-            ConvertVariant<AllMessages, WriteResponse<CoordinatorWriteResponses>>(std::move(request_envelope.message));
-
-        MG_ASSERT(conversion_attempt.has_value(), "shard manager message conversion failed");
-
-        spdlog::info("got shard manager message");
-
-        ShardManagerMessages &&smm = std::move(conversion_attempt.value());
-        shard_manager_.Receive(std::forward<ShardManagerMessages>(smm), request_envelope.request_id,
-                               request_envelope.from_address);
-        continue;
-      }
-
-      // treat this as a message to a specific shard rsm and cast it accordingly
-
-      std::optional<ShardMessages> conversion_attempt =
-          ConvertVariant<AllMessages, ReadRequest<StorageReadRequest>, AppendRequest<StorageWriteRequest>,
-                         AppendResponse, WriteRequest<StorageWriteRequest>, VoteRequest, VoteResponse>(
-              std::move(request_envelope.message));
-
-      MG_ASSERT(conversion_attempt.has_value(), "shard rsm message conversion failed for {}",
-                request_envelope.to_address.ToString());
-
-      spdlog::info("got shard rsm message");
-
-      ShardMessages &&sm = std::move(conversion_attempt.value());
-      shard_manager_.Route(std::forward<ShardMessages>(sm), request_envelope.request_id, request_envelope.to_address,
-                           request_envelope.from_address);
-    }
-  }
-
- private:
-  Time Cron() {
-    spdlog::info("running MachineManager::Cron, address {}", io_.GetAddress().ToString());
-    return shard_manager_.Cron();
-  }
-};
-
-}  // namespace memgraph::machine_manager

src/memgraph.cpp

@@ -216,11 +216,6 @@ DEFINE_bool(telemetry_enabled, false,
             "the database runtime (vertex and edge counts and resource usage) "
             "to allow for easier improvement of the product.");
 
-// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
-DEFINE_bool(storage_restore_replicas_on_startup, true,
-            "Controls replicas should be restored automatically.");  // TODO(42jeremy) this must be removed once T0835
-                                                                     // is implemented.
-
 // Streams flags
 // NOLINTNEXTLINE (cppcoreguidelines-avoid-non-const-global-variables)
 DEFINE_uint32(
@@ -1200,8 +1195,7 @@ int main(int argc, char **argv) {
                      .snapshot_retention_count = FLAGS_storage_snapshot_retention_count,
                      .wal_file_size_kibibytes = FLAGS_storage_wal_file_size_kib,
                      .wal_file_flush_every_n_tx = FLAGS_storage_wal_file_flush_every_n_tx,
-                     .snapshot_on_exit = FLAGS_storage_snapshot_on_exit,
-                     .restore_replicas_on_startup = FLAGS_storage_restore_replicas_on_startup},
+                     .snapshot_on_exit = FLAGS_storage_snapshot_on_exit},
       .transaction = {.isolation_level = ParseIsolationLevel()}};
   if (FLAGS_storage_snapshot_interval_sec == 0) {
     if (FLAGS_storage_wal_enabled) {
@@ -1252,8 +1246,9 @@ int main(int argc, char **argv) {
     // the triggers
     auto storage_accessor = interpreter_context.db->Access();
     auto dba = memgraph::query::DbAccessor{&storage_accessor};
-    interpreter_context.trigger_store.RestoreTriggers(
-        &interpreter_context.ast_cache, &dba, interpreter_context.config.query, interpreter_context.auth_checker);
+    interpreter_context.trigger_store.RestoreTriggers(&interpreter_context.ast_cache, &dba,
+                                                      &interpreter_context.antlr_lock, interpreter_context.config.query,
+                                                      interpreter_context.auth_checker);
   }
 
   // As the Stream transformations are using modules, they have to be restored after the query modules are loaded.

src/mg_import_csv.cpp

@@ -170,7 +170,7 @@ enum class CsvParserState {
   EXPECT_DELIMITER,
 };
 
-bool SubstringStartsWith(const std::string_view str, size_t pos, const std::string_view what) {
+bool SubstringStartsWith(const std::string_view &str, size_t pos, const std::string_view &what) {
   return memgraph::utils::StartsWith(memgraph::utils::Substr(str, pos), what);
 }
 

src/parser/CMakeLists.txt

@@ -1,41 +0,0 @@
-## Generate Antlr openCypher parser
-
-set(opencypher_frontend ${CMAKE_CURRENT_SOURCE_DIR}/opencypher)
-set(opencypher_generated ${opencypher_frontend}/generated)
-set(opencypher_lexer_grammar ${opencypher_frontend}/grammar/MemgraphCypherLexer.g4)
-set(opencypher_parser_grammar ${opencypher_frontend}/grammar/MemgraphCypher.g4)
-
-set(antlr_opencypher_generated_src
-    ${opencypher_generated}/MemgraphCypherLexer.cpp
-    ${opencypher_generated}/MemgraphCypher.cpp
-    ${opencypher_generated}/MemgraphCypherBaseVisitor.cpp
-    ${opencypher_generated}/MemgraphCypherVisitor.cpp
-)
-set(antlr_opencypher_generated_include
-    ${opencypher_generated}/MemgraphCypherLexer.h
-    ${opencypher_generated}/MemgraphCypher.h
-    ${opencypher_generated}/MemgraphCypherBaseVisitor.h
-    ${opencypher_generated}/MemgraphCypherVisitor.h
-)
-
-add_custom_command(
-    OUTPUT ${antlr_opencypher_generated_src} ${antlr_opencypher_generated_include}
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${opencypher_generated}
-    COMMAND
-        java -jar ${CMAKE_SOURCE_DIR}/libs/antlr-4.10.1-complete.jar
-            -Dlanguage=Cpp -visitor -package antlropencypher
-            -o ${opencypher_generated}
-            ${opencypher_lexer_grammar} ${opencypher_parser_grammar}
-    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
-    DEPENDS
-        ${opencypher_lexer_grammar} ${opencypher_parser_grammar}
-        ${opencypher_frontend}/grammar/CypherLexer.g4
-        ${opencypher_frontend}/grammar/Cypher.g4)
-
-add_custom_target(generated_opencypher_parser
-    DEPENDS ${antlr_opencypher_generated_src} ${antlr_opencypher_generated_include})
-
-add_library(mg-parser STATIC ${antlr_opencypher_generated_src})
-add_dependencies(mg-parser generated_opencypher_parser)
-target_include_directories(mg-parser PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
-target_link_libraries(mg-parser antlr4)

src/parser/opencypher/grammar/Cypher.g4

@@ -1,391 +0,0 @@
-/*
- * Copyright (c) 2015-2016 "Neo Technology,"
- * Network Engine for Objects in Lund AB [http://neotechnology.com]
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-parser grammar Cypher;
-
-options { tokenVocab=CypherLexer; }
-
-cypher : statement ';'? EOF ;
-
-statement : query ;
-
-query : cypherQuery
-      | indexQuery
-      | explainQuery
-      | profileQuery
-      | infoQuery
-      | constraintQuery
-      ;
-
-constraintQuery : ( CREATE | DROP ) CONSTRAINT ON constraint ;
-
-constraint : '(' nodeName=variable ':' labelName ')' ASSERT EXISTS '(' constraintPropertyList ')'
-           | '(' nodeName=variable ':' labelName ')' ASSERT constraintPropertyList IS UNIQUE
-           | '(' nodeName=variable ':' labelName ')' ASSERT '(' constraintPropertyList ')' IS NODE KEY
-           ;
-
-constraintPropertyList : variable propertyLookup ( ',' variable propertyLookup )* ;
-
-storageInfo : STORAGE INFO ;
-
-indexInfo : INDEX INFO ;
-
-constraintInfo : CONSTRAINT INFO ;
-
-infoQuery : SHOW ( storageInfo | indexInfo | constraintInfo ) ;
-
-explainQuery : EXPLAIN cypherQuery ;
-
-profileQuery : PROFILE cypherQuery ;
-
-cypherQuery : singleQuery ( cypherUnion )* ( queryMemoryLimit )? ;
-
-indexQuery : createIndex | dropIndex;
-
-singleQuery : clause ( clause )* ;
-
-cypherUnion : ( UNION ALL singleQuery )
-            | ( UNION singleQuery )
-            ;
-
-clause : cypherMatch
-       | unwind
-       | merge
-       | create
-       | set
-       | cypherDelete
-       | remove
-       | with
-       | cypherReturn
-       | callProcedure
-       ;
-
-cypherMatch : OPTIONAL? MATCH pattern where? ;
-
-unwind : UNWIND expression AS variable ;
-
-merge : MERGE patternPart ( mergeAction )* ;
-
-mergeAction : ( ON MATCH set )
-            | ( ON CREATE set )
-            ;
-
-create : CREATE pattern ;
-
-set : SET setItem ( ',' setItem )* ;
-
-setItem : ( propertyExpression '=' expression )
-        | ( variable '=' expression )
-        | ( variable '+=' expression )
-        | ( variable nodeLabels )
-        ;
-
-cypherDelete : DETACH? DELETE expression ( ',' expression )* ;
-
-remove : REMOVE removeItem ( ',' removeItem )* ;
-
-removeItem : ( variable nodeLabels )
-           | propertyExpression
-           ;
-
-with : WITH ( DISTINCT )? returnBody ( where )? ;
-
-cypherReturn : RETURN ( DISTINCT )? returnBody ;
-
-callProcedure : CALL procedureName '(' ( expression ( ',' expression )* )? ')' ( procedureMemoryLimit )? ( yieldProcedureResults )? ;
-
-procedureName : symbolicName ( '.' symbolicName )* ;
-
-yieldProcedureResults : YIELD ( '*' | ( procedureResult ( ',' procedureResult )* ) ) ;
-
-memoryLimit : MEMORY ( UNLIMITED | LIMIT literal ( MB | KB ) ) ;
-
-queryMemoryLimit : QUERY memoryLimit ;
-
-procedureMemoryLimit : PROCEDURE memoryLimit ;
-
-procedureResult : ( variable AS variable ) | variable ;
-
-returnBody : returnItems ( order )? ( skip )? ( limit )? ;
-
-returnItems : ( '*' ( ',' returnItem )* )
-            | ( returnItem ( ',' returnItem )* )
-            ;
-
-returnItem : ( expression AS variable )
-           | expression
-           ;
-
-order : ORDER BY sortItem ( ',' sortItem )* ;
-
-skip : L_SKIP expression ;
-
-limit : LIMIT expression ;
-
-sortItem : expression ( ASCENDING | ASC | DESCENDING | DESC )? ;
-
-where : WHERE expression ;
-
-pattern : patternPart ( ',' patternPart )* ;
-
-patternPart : ( variable '=' anonymousPatternPart )
-            | anonymousPatternPart
-            ;
-
-anonymousPatternPart : patternElement ;
-
-patternElement : ( nodePattern ( patternElementChain )* )
-               | ( '(' patternElement ')' )
-               ;
-
-nodePattern : '(' ( variable )? ( nodeLabels )? ( properties )? ')' ;
-
-patternElementChain : relationshipPattern nodePattern ;
-
-relationshipPattern : ( leftArrowHead dash ( relationshipDetail )? dash rightArrowHead )
-                    | ( leftArrowHead dash ( relationshipDetail )? dash )
-                    | ( dash ( relationshipDetail )? dash rightArrowHead )
-                    | ( dash ( relationshipDetail )? dash )
-                    ;
-
-leftArrowHead : '<' | LeftArrowHeadPart ;
-rightArrowHead : '>' | RightArrowHeadPart ;
-dash : '-' | DashPart ;
-
-relationshipDetail : '[' ( name=variable )? ( relationshipTypes )? ( variableExpansion )?  properties ']'
-                   | '[' ( name=variable )? ( relationshipTypes )? ( variableExpansion )? relationshipLambda ( total_weight=variable )? (relationshipLambda )? ']'
-                   | '[' ( name=variable )? ( relationshipTypes )? ( variableExpansion )? (properties )* ( relationshipLambda total_weight=variable )? (relationshipLambda )? ']';
-
-relationshipLambda: '(' traversed_edge=variable ',' traversed_node=variable '|' expression ')';
-
-variableExpansion : '*' (BFS | WSHORTEST)? ( expression )? ( '..' ( expression )? )? ;
-
-properties : mapLiteral
-           | parameter
-           ;
-
-relationshipTypes : ':' relTypeName ( '|' ':'? relTypeName )* ;
-
-nodeLabels : nodeLabel ( nodeLabel )* ;
-
-nodeLabel : ':' labelName ;
-
-labelName : symbolicName ;
-
-relTypeName : symbolicName ;
-
-expression : expression12 ;
-
-expression12 : expression11 ( OR expression11 )* ;
-
-expression11 : expression10 ( XOR expression10 )* ;
-
-expression10 : expression9 ( AND expression9 )* ;
-
-expression9 : ( NOT )* expression8 ;
-
-expression8 : expression7 ( partialComparisonExpression )* ;
-
-expression7 : expression6 ( ( '+' expression6 ) | ( '-' expression6 ) )* ;
-
-expression6 : expression5 ( ( '*' expression5 ) | ( '/' expression5 ) | ( '%' expression5 ) )* ;
-
-expression5 : expression4 ( '^' expression4 )* ;
-
-expression4 : ( ( '+' | '-' ) )* expression3a ;
-
-expression3a : expression3b ( stringAndNullOperators )* ;
-
-stringAndNullOperators : ( ( ( ( '=~' ) | ( IN ) | ( STARTS WITH ) | ( ENDS WITH ) | ( CONTAINS ) ) expression3b) | ( IS CYPHERNULL ) | ( IS NOT CYPHERNULL ) ) ;
-
-expression3b : expression2a ( listIndexingOrSlicing )* ;
-
-listIndexingOrSlicing : ( '[' expression ']' )
-                      | ( '[' lower_bound=expression? '..' upper_bound=expression? ']' )
-                      ;
-
-expression2a : expression2b ( nodeLabels )? ;
-
-expression2b : atom ( propertyLookup )* ;
-
-atom : literal
-     | parameter
-     | caseExpression
-     | ( COUNT '(' '*' ')' )
-     | listComprehension
-     | patternComprehension
-     | ( FILTER '(' filterExpression ')' )
-     | ( EXTRACT '(' extractExpression ')' )
-     | ( REDUCE '(' reduceExpression ')' )
-     | ( COALESCE '(' expression ( ',' expression )* ')' )
-     | ( ALL '(' filterExpression ')' )
-     | ( ANY '(' filterExpression ')' )
-     | ( NONE '(' filterExpression ')' )
-     | ( SINGLE '(' filterExpression ')' )
-     | relationshipsPattern
-     | parenthesizedExpression
-     | functionInvocation
-     | variable
-     ;
-
-literal : numberLiteral
-        | StringLiteral
-        | booleanLiteral
-        | CYPHERNULL
-        | mapLiteral
-        | listLiteral
-        ;
-
-booleanLiteral : TRUE
-               | FALSE
-               ;
-
-listLiteral : '[' ( expression ( ',' expression )* )? ']' ;
-
-partialComparisonExpression : ( '=' expression7 )
-                            | ( '<>' expression7 )
-                            | ( '!=' expression7 )
-                            | ( '<' expression7 )
-                            | ( '>' expression7 )
-                            | ( '<=' expression7 )
-                            | ( '>=' expression7 )
-                            ;
-
-parenthesizedExpression : '(' expression ')' ;
-
-relationshipsPattern : nodePattern ( patternElementChain )+ ;
-
-filterExpression : idInColl ( where )? ;
-
-reduceExpression : accumulator=variable '=' initial=expression ',' idInColl '|' expression ;
-
-extractExpression : idInColl '|' expression ;
-
-idInColl : variable IN expression ;
-
-functionInvocation : functionName '(' ( DISTINCT )? ( expression ( ',' expression )* )? ')' ;
-
-functionName : symbolicName ( '.' symbolicName )* ;
-
-listComprehension : '[' filterExpression ( '|' expression )? ']' ;
-
-patternComprehension : '[' ( variable '=' )? relationshipsPattern ( WHERE expression )? '|' expression ']' ;
-
-propertyLookup : '.' ( propertyKeyName ) ;
-
-caseExpression : ( ( CASE ( caseAlternatives )+ ) | ( CASE test=expression ( caseAlternatives )+ ) ) ( ELSE else_expression=expression )? END ;
-
-caseAlternatives : WHEN when_expression=expression THEN then_expression=expression ;
-
-variable : symbolicName ;
-
-numberLiteral : doubleLiteral
-              | integerLiteral
-              ;
-
-mapLiteral : '{' ( propertyKeyName ':' expression ( ',' propertyKeyName ':' expression )* )? '}' ;
-
-parameter : '$' ( symbolicName | DecimalLiteral ) ;
-
-propertyExpression : atom ( propertyLookup )+ ;
-
-propertyKeyName : symbolicName ;
-
-integerLiteral : DecimalLiteral
-               | OctalLiteral
-               | HexadecimalLiteral
-               ;
-
-createIndex : CREATE INDEX ON ':' labelName ( '(' propertyKeyName ')' )? ;
-
-dropIndex : DROP INDEX ON ':' labelName ( '(' propertyKeyName ')' )? ;
-
-doubleLiteral : FloatingLiteral ;
-
-cypherKeyword : ALL
-              | AND
-              | ANY
-              | AS
-              | ASC
-              | ASCENDING
-              | ASSERT
-              | BFS
-              | BY
-              | CALL
-              | CASE
-              | CONSTRAINT
-              | CONTAINS
-              | COUNT
-              | CREATE
-              | CYPHERNULL
-              | DELETE
-              | DESC
-              | DESCENDING
-              | DETACH
-              | DISTINCT
-              | ELSE
-              | END
-              | ENDS
-              | EXISTS
-              | EXPLAIN
-              | EXTRACT
-              | FALSE
-              | FILTER
-              | IN
-              | INDEX
-              | INFO
-              | IS
-              | KEY
-              | LIMIT
-              | L_SKIP
-              | MATCH
-              | MERGE
-              | NODE
-              | NONE
-              | NOT
-              | ON
-              | OPTIONAL
-              | OR
-              | ORDER
-              | PROCEDURE
-              | PROFILE
-              | QUERY
-              | REDUCE
-              | REMOVE
-              | RETURN
-              | SET
-              | SHOW
-              | SINGLE
-              | STARTS
-              | STORAGE
-              | THEN
-              | TRUE
-              | UNION
-              | UNIQUE
-              | UNWIND
-              | WHEN
-              | WHERE
-              | WITH
-              | WSHORTEST
-              | XOR
-              | YIELD
-              ;
-
-symbolicName : UnescapedSymbolicName
-             | EscapedSymbolicName
-             | cypherKeyword
-             ;

src/parser/opencypher/grammar/CypherLexer.g4

@@ -1,208 +0,0 @@
-/*
- * When changing this grammar make sure to update constants in
- * src/parser/stripped_lexer_constants.hpp (kKeywords, kSpecialTokens
- * and bitsets) if needed.
- */
-
-lexer grammar CypherLexer ;
-
-import UnicodeCategories ;
-
-/* Skip whitespace and comments. */
-Skipped              : ( Whitespace | Comment ) -> skip ;
-
-fragment Whitespace  : '\u0020'
-                     | [\u0009-\u000D]
-                     | [\u001C-\u001F]
-                     | '\u1680' | '\u180E'
-                     | [\u2000-\u200A]
-                     | '\u2028' | '\u2029'
-                     | '\u205F'
-                     | '\u3000'
-                     | '\u00A0'
-                     | '\u202F'
-                     ;
-
-fragment Comment     : '/*' .*? '*/'
-                     | '//' ~[\r\n]*
-                     ;
-
-/* Special symbols. */
-LPAREN    : '(' ;
-RPAREN    : ')' ;
-LBRACK    : '[' ;
-RBRACK    : ']' ;
-LBRACE    : '{' ;
-RBRACE    : '}' ;
-
-COMMA     : ',' ;
-DOT       : '.' ;
-DOTS      : '..' ;
-COLON     : ':' ;
-SEMICOLON : ';' ;
-DOLLAR    : '$' ;
-PIPE      : '|' ;
-
-EQ        : '=' ;
-LT        : '<' ;
-GT        : '>' ;
-LTE       : '<=' ;
-GTE       : '>=' ;
-NEQ1      : '<>' ;
-NEQ2      : '!=' ;
-SIM       : '=~' ;
-
-PLUS      : '+' ;
-MINUS     : '-' ;
-ASTERISK  : '*' ;
-SLASH     : '/' ;
-PERCENT   : '%' ;
-CARET     : '^' ;
-PLUS_EQ   : '+=' ;
-
-/* Some random unicode characters that can be used to draw arrows. */
-LeftArrowHeadPart  : '⟨' | '〈' | '﹤' | '＜' ;
-RightArrowHeadPart : '⟩' | '〉' | '﹥' | '＞' ;
-DashPart           : '­' | '‐' | '‑' | '‒' | '–' | '—' | '―'
-                   | '−' | '﹘' | '﹣' | '－'
-                   ;
-
-/* Cypher reserved words. */
-ALL            : A L L ;
-AND            : A N D ;
-ANY            : A N Y ;
-AS             : A S ;
-ASC            : A S C ;
-ASCENDING      : A S C E N D I N G ;
-ASSERT         : A S S E R T ;
-BFS            : B F S ;
-BY             : B Y ;
-CALL           : C A L L ;
-CASE           : C A S E ;
-COALESCE       : C O A L E S C E ;
-CONSTRAINT     : C O N S T R A I N T ;
-CONTAINS       : C O N T A I N S ;
-COUNT          : C O U N T ;
-CREATE         : C R E A T E ;
-CYPHERNULL     : N U L L ;
-DELETE         : D E L E T E ;
-DESC           : D E S C ;
-DESCENDING     : D E S C E N D I N G ;
-DETACH         : D E T A C H ;
-DISTINCT       : D I S T I N C T ;
-DROP           : D R O P ;
-ELSE           : E L S E ;
-END            : E N D ;
-ENDS           : E N D S ;
-EXISTS         : E X I S T S ;
-EXPLAIN        : E X P L A I N ;
-EXTRACT        : E X T R A C T ;
-FALSE          : F A L S E ;
-FILTER         : F I L T E R ;
-IN             : I N ;
-INDEX          : I N D E X ;
-INFO           : I N F O ;
-IS             : I S ;
-KB             : K B ;
-KEY            : K E Y ;
-LIMIT          : L I M I T ;
-L_SKIP         : S K I P ;
-MATCH          : M A T C H ;
-MB             : M B ;
-MEMORY         : M E M O R Y ;
-MERGE          : M E R G E ;
-NODE           : N O D E ;
-NONE           : N O N E ;
-NOT            : N O T ;
-ON             : O N ;
-OPTIONAL       : O P T I O N A L ;
-OR             : O R ;
-ORDER          : O R D E R ;
-PROCEDURE      : P R O C E D U R E ;
-PROFILE        : P R O F I L E ;
-QUERY          : Q U E R Y ;
-REDUCE         : R E D U C E ;
-REMOVE         : R E M O V E ;
-RETURN         : R E T U R N ;
-SET            : S E T ;
-SHOW           : S H O W ;
-SINGLE         : S I N G L E ;
-STARTS         : S T A R T S ;
-STORAGE        : S T O R A G E ;
-THEN           : T H E N ;
-TRUE           : T R U E ;
-UNION          : U N I O N ;
-UNIQUE         : U N I Q U E ;
-UNLIMITED      : U N L I M I T E D ;
-UNWIND         : U N W I N D ;
-WHEN           : W H E N ;
-WHERE          : W H E R E ;
-WITH           : W I T H ;
-WSHORTEST      : W S H O R T E S T ;
-XOR            : X O R ;
-YIELD          : Y I E L D ;
-
-/* Double and single quoted string literals. */
-StringLiteral : '"'  ( ~[\\"] | EscapeSequence )* '"'
-              | '\'' ( ~[\\'] | EscapeSequence )* '\''
-              ;
-
-fragment EscapeSequence : '\\' ( B | F | N | R | T | '\\' | '\'' | '"' )
-                        | '\\u' HexDigit HexDigit HexDigit HexDigit
-                        | '\\U' HexDigit HexDigit HexDigit HexDigit
-                                HexDigit HexDigit HexDigit HexDigit
-                        ;
-
-/* Number literals. */
-DecimalLiteral     : '0' | NonZeroDigit ( DecDigit )* ;
-OctalLiteral       : '0' ( OctDigit )+ ;
-HexadecimalLiteral : '0x' ( HexDigit )+ ;
-FloatingLiteral    : DecDigit* '.' DecDigit+ ( E '-'? DecDigit+ )?
-                   | DecDigit+ ( '.' DecDigit* )? ( E '-'? DecDigit+ )
-                   | DecDigit+ ( E '-'? DecDigit+ )
-                   ;
-
-fragment NonZeroDigit : [1-9] ;
-fragment DecDigit     : [0-9] ;
-fragment OctDigit     : [0-7] ;
-fragment HexDigit     : [0-9] | [a-f] | [A-F] ;
-
-/* Symbolic names. */
-UnescapedSymbolicName : IdentifierStart ( IdentifierPart )* ;
-EscapedSymbolicName   : ( '`' ~[`]* '`' )+ ;
-
-/**
- * Based on the unicode identifier and pattern syntax
- * (http://www.unicode.org/reports/tr31/)
- * and extended with a few characters.
- */
-IdentifierStart : ID_Start    | Pc ;
-IdentifierPart  : ID_Continue | Sc ;
-
-/* Hack for case-insensitive reserved words */
-fragment A : 'A' | 'a' ;
-fragment B : 'B' | 'b' ;
-fragment C : 'C' | 'c' ;
-fragment D : 'D' | 'd' ;
-fragment E : 'E' | 'e' ;
-fragment F : 'F' | 'f' ;
-fragment G : 'G' | 'g' ;
-fragment H : 'H' | 'h' ;
-fragment I : 'I' | 'i' ;
-fragment J : 'J' | 'j' ;
-fragment K : 'K' | 'k' ;
-fragment L : 'L' | 'l' ;
-fragment M : 'M' | 'm' ;
-fragment N : 'N' | 'n' ;
-fragment O : 'O' | 'o' ;
-fragment P : 'P' | 'p' ;
-fragment Q : 'Q' | 'q' ;
-fragment R : 'R' | 'r' ;
-fragment S : 'S' | 's' ;
-fragment T : 'T' | 't' ;
-fragment U : 'U' | 'u' ;
-fragment V : 'V' | 'v' ;
-fragment W : 'W' | 'w' ;
-fragment X : 'X' | 'x' ;
-fragment Y : 'Y' | 'y' ;
-fragment Z : 'Z' | 'z' ;

src/parser/opencypher/grammar/MemgraphCypher.g4

@@ -1,399 +0,0 @@
-/*
- * Copyright 2021 Memgraph Ltd.
- *
- * Use of this software is governed by the Business Source License
- * included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
- * License, and you may not use this file except in compliance with the Business Source License.
- *
- * As of the Change Date specified in that file, in accordance with
- * the Business Source License, use of this software will be governed
- * by the Apache License, Version 2.0, included in the file
- * licenses/APL.txt.
- */
-
-/* Memgraph specific part of Cypher grammar with enterprise features. */
-
-parser grammar MemgraphCypher ;
-
-options { tokenVocab=MemgraphCypherLexer; }
-
-import Cypher ;
-
-memgraphCypherKeyword : cypherKeyword
-                      | AFTER
-                      | ALTER
-                      | ASYNC
-                      | AUTH
-                      | BAD
-                      | BATCH_INTERVAL
-                      | BATCH_LIMIT
-                      | BATCH_SIZE
-                      | BEFORE
-                      | BOOTSTRAP_SERVERS
-                      | CHECK
-                      | CLEAR
-                      | COMMIT
-                      | COMMITTED
-                      | CONFIG
-                      | CONFIGS
-                      | CONSUMER_GROUP
-                      | CREDENTIALS
-                      | CSV
-                      | DATA
-                      | DELIMITER
-                      | DATABASE
-                      | DENY
-                      | DROP
-                      | DUMP
-                      | EXECUTE
-                      | FREE
-                      | FROM
-                      | FOR
-                      | FOREACH
-                      | GLOBAL
-                      | GRANT
-                      | HEADER
-                      | IDENTIFIED
-                      | ISOLATION
-                      | KAFKA
-                      | LEVEL
-                      | LOAD
-                      | LOCK
-                      | MAIN
-                      | MODE
-                      | NEXT
-                      | NO
-                      | PASSWORD
-                      | PULSAR
-                      | PORT
-                      | PRIVILEGES
-                      | READ
-                      | REGISTER
-                      | REPLICA
-                      | REPLICAS
-                      | REPLICATION
-                      | REVOKE
-                      | ROLE
-                      | ROLES
-                      | QUOTE
-                      | SCHEMA
-                      | SCHEMAS
-                      | SESSION
-                      | SETTING
-                      | SETTINGS
-                      | SNAPSHOT
-                      | START
-                      | STATS
-                      | STREAM
-                      | STREAMS
-                      | SYNC
-                      | TIMEOUT
-                      | TO
-                      | TOPICS
-                      | TRANSACTION
-                      | TRANSFORM
-                      | TRIGGER
-                      | TRIGGERS
-                      | UNCOMMITTED
-                      | UNLOCK
-                      | UPDATE
-                      | USER
-                      | USERS
-                      | VERSION
-                      ;
-
-symbolicName : UnescapedSymbolicName
-             | EscapedSymbolicName
-             | memgraphCypherKeyword
-             ;
-
-query : cypherQuery
-      | indexQuery
-      | explainQuery
-      | profileQuery
-      | infoQuery
-      | constraintQuery
-      | authQuery
-      | dumpQuery
-      | replicationQuery
-      | lockPathQuery
-      | freeMemoryQuery
-      | triggerQuery
-      | isolationLevelQuery
-      | createSnapshotQuery
-      | streamQuery
-      | settingQuery
-      | versionQuery
-      | schemaQuery
-      ;
-
-authQuery : createRole
-          | dropRole
-          | showRoles
-          | createUser
-          | setPassword
-          | dropUser
-          | showUsers
-          | setRole
-          | clearRole
-          | grantPrivilege
-          | denyPrivilege
-          | revokePrivilege
-          | showPrivileges
-          | showRoleForUser
-          | showUsersForRole
-          ;
-
-replicationQuery : setReplicationRole
-                 | showReplicationRole
-                 | registerReplica
-                 | dropReplica
-                 | showReplicas
-                 ;
-
-triggerQuery : createTrigger
-             | dropTrigger
-             | showTriggers
-             ;
-
-clause : cypherMatch
-       | unwind
-       | merge
-       | create
-       | set
-       | cypherDelete
-       | remove
-       | with
-       | cypherReturn
-       | callProcedure
-       | loadCsv
-       | foreach
-       ;
-
-updateClause : set
-             | remove
-             | create
-             | merge
-             | cypherDelete
-             | foreach
-             ;
-
-foreach :  FOREACH '(' variable IN expression '|' updateClause+  ')' ;
-
-streamQuery : checkStream
-            | createStream
-            | dropStream
-            | startStream
-            | startAllStreams
-            | stopStream
-            | stopAllStreams
-            | showStreams
-            ;
-
-settingQuery : setSetting
-             | showSetting
-             | showSettings
-             ;
-
-schemaQuery : showSchema
-            | showSchemas
-            | createSchema
-            | dropSchema
-            ;
-
-loadCsv : LOAD CSV FROM csvFile ( WITH | NO ) HEADER
-         ( IGNORE BAD ) ?
-         ( DELIMITER delimiter ) ?
-         ( QUOTE quote ) ?
-         AS rowVar ;
-
-csvFile : literal ;
-
-delimiter : literal ;
-
-quote : literal ;
-
-rowVar : variable ;
-
-userOrRoleName : symbolicName ;
-
-createRole : CREATE ROLE role=userOrRoleName ;
-
-dropRole   : DROP ROLE role=userOrRoleName ;
-
-showRoles  : SHOW ROLES ;
-
-createUser : CREATE USER user=userOrRoleName
-             ( IDENTIFIED BY password=literal )? ;
-
-setPassword : SET PASSWORD FOR user=userOrRoleName TO password=literal;
-
-dropUser : DROP USER user=userOrRoleName ;
-
-showUsers : SHOW USERS ;
-
-setRole : SET ROLE FOR user=userOrRoleName TO role=userOrRoleName;
-
-clearRole : CLEAR ROLE FOR user=userOrRoleName ;
-
-grantPrivilege : GRANT ( ALL PRIVILEGES | privileges=privilegeList ) TO userOrRole=userOrRoleName ;
-
-denyPrivilege : DENY ( ALL PRIVILEGES | privileges=privilegeList ) TO userOrRole=userOrRoleName ;
-
-revokePrivilege : REVOKE ( ALL PRIVILEGES | privileges=privilegeList ) FROM userOrRole=userOrRoleName ;
-
-privilege : CREATE
-          | DELETE
-          | MATCH
-          | MERGE
-          | SET
-          | REMOVE
-          | INDEX
-          | STATS
-          | AUTH
-          | CONSTRAINT
-          | DUMP
-          | REPLICATION
-          | READ_FILE
-          | FREE_MEMORY
-          | TRIGGER
-          | CONFIG
-          | DURABILITY
-          | STREAM
-          | MODULE_READ
-          | MODULE_WRITE
-          | WEBSOCKET
-          | SCHEMA
-          ;
-
-privilegeList : privilege ( ',' privilege )* ;
-
-showPrivileges : SHOW PRIVILEGES FOR userOrRole=userOrRoleName ;
-
-showRoleForUser : SHOW ROLE FOR user=userOrRoleName ;
-
-showUsersForRole : SHOW USERS FOR role=userOrRoleName ;
-
-dumpQuery: DUMP DATABASE ;
-
-setReplicationRole  : SET REPLICATION ROLE TO ( MAIN | REPLICA )
-                      ( WITH PORT port=literal ) ? ;
-
-showReplicationRole : SHOW REPLICATION ROLE ;
-
-replicaName : symbolicName ;
-
-socketAddress : literal ;
-
-registerReplica : REGISTER REPLICA replicaName ( SYNC | ASYNC )
-                TO socketAddress ;
-
-dropReplica : DROP REPLICA replicaName ;
-
-showReplicas  : SHOW REPLICAS ;
-
-lockPathQuery : ( LOCK | UNLOCK ) DATA DIRECTORY ;
-
-freeMemoryQuery : FREE MEMORY ;
-
-triggerName : symbolicName ;
-
-triggerStatement : .*? ;
-
-emptyVertex : '(' ')' ;
-
-emptyEdge : dash dash rightArrowHead ;
-
-createTrigger : CREATE TRIGGER triggerName ( ON ( emptyVertex | emptyEdge ) ? ( CREATE | UPDATE | DELETE ) ) ?
-              ( AFTER | BEFORE ) COMMIT EXECUTE triggerStatement ;
-
-dropTrigger : DROP TRIGGER triggerName ;
-
-showTriggers : SHOW TRIGGERS ;
-
-isolationLevel : SNAPSHOT ISOLATION | READ COMMITTED | READ UNCOMMITTED ;
-
-isolationLevelScope : GLOBAL | SESSION | NEXT ;
-
-isolationLevelQuery : SET isolationLevelScope TRANSACTION ISOLATION LEVEL isolationLevel ;
-
-createSnapshotQuery : CREATE SNAPSHOT ;
-
-streamName : symbolicName ;
-
-symbolicNameWithMinus : symbolicName ( MINUS symbolicName )* ;
-
-symbolicNameWithDotsAndMinus: symbolicNameWithMinus ( DOT symbolicNameWithMinus )* ;
-
-symbolicTopicNames : symbolicNameWithDotsAndMinus ( COMMA symbolicNameWithDotsAndMinus )* ;
-
-topicNames : symbolicTopicNames | literal ;
-
-commonCreateStreamConfig : TRANSFORM transformationName=procedureName
-                         | BATCH_INTERVAL batchInterval=literal
-                         | BATCH_SIZE batchSize=literal
-                         ;
-
-createStream : kafkaCreateStream | pulsarCreateStream ;
-
-configKeyValuePair : literal ':' literal ;
-
-configMap : '{' ( configKeyValuePair ( ',' configKeyValuePair )* )? '}' ;
-
-kafkaCreateStreamConfig : TOPICS topicNames
-                        | CONSUMER_GROUP consumerGroup=symbolicNameWithDotsAndMinus
-                        | BOOTSTRAP_SERVERS bootstrapServers=literal
-                        | CONFIGS configsMap=configMap
-                        | CREDENTIALS credentialsMap=configMap
-                        | commonCreateStreamConfig
-                        ;
-
-kafkaCreateStream : CREATE KAFKA STREAM streamName ( kafkaCreateStreamConfig ) * ;
-
-
-pulsarCreateStreamConfig : TOPICS topicNames
-                         | SERVICE_URL serviceUrl=literal
-                         | commonCreateStreamConfig
-                         ;
-
-pulsarCreateStream : CREATE PULSAR STREAM streamName ( pulsarCreateStreamConfig ) * ;
-
-dropStream : DROP STREAM streamName ;
-
-startStream : START STREAM streamName ( BATCH_LIMIT batchLimit=literal ) ? ( TIMEOUT timeout=literal ) ? ;
-
-startAllStreams : START ALL STREAMS ;
-
-stopStream : STOP STREAM streamName ;
-
-stopAllStreams : STOP ALL STREAMS ;
-
-showStreams : SHOW STREAMS ;
-
-checkStream : CHECK STREAM streamName ( BATCH_LIMIT batchLimit=literal ) ? ( TIMEOUT timeout=literal ) ? ;
-
-settingName : literal ;
-
-settingValue : literal ;
-
-setSetting : SET DATABASE SETTING settingName TO settingValue ;
-
-showSetting : SHOW DATABASE SETTING settingName ;
-
-showSettings : SHOW DATABASE SETTINGS ;
-
-versionQuery : SHOW VERSION ;
-
-showSchema : SHOW SCHEMA ON ':' labelName ;
-
-showSchemas : SHOW SCHEMAS ;
-
-propertyType : symbolicName ;
-
-propertyKeyTypePair : propertyKeyName propertyType ;
-
-schemaPropertyMap : '(' propertyKeyTypePair ( ',' propertyKeyTypePair )* ')' ;
-
-createSchema : CREATE SCHEMA ON ':' labelName schemaPropertyMap ;
-
-dropSchema : DROP SCHEMA ON ':' labelName ;

src/parser/opencypher/grammar/MemgraphCypherLexer.g4

@@ -1,118 +0,0 @@
-/*
- * Copyright 2021 Memgraph Ltd.
- *
- * Use of this software is governed by the Business Source License
- * included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
- * License, and you may not use this file except in compliance with the Business Source License.
- *
- * As of the Change Date specified in that file, in accordance with
- * the Business Source License, use of this software will be governed
- * by the Apache License, Version 2.0, included in the file
- * licenses/APL.txt.
- */
-
-/* Memgraph specific Cypher reserved words used for enterprise features. */
-
-/*
- * When changing this grammar make sure to update constants in
- * src/parser/stripped_lexer_constants.hpp (kKeywords, kSpecialTokens
- * and bitsets) if needed.
- */
-
-lexer grammar MemgraphCypherLexer ;
-
-import CypherLexer ;
-
-UNDERSCORE : '_' ;
-
-AFTER               : A F T E R ;
-ALTER               : A L T E R ;
-ASYNC               : A S Y N C ;
-AUTH                : A U T H ;
-BAD                 : B A D ;
-BATCH_INTERVAL      : B A T C H UNDERSCORE I N T E R V A L ;
-BATCH_LIMIT         : B A T C H UNDERSCORE L I M I T ;
-BATCH_SIZE          : B A T C H UNDERSCORE S I Z E ;
-BEFORE              : B E F O R E ;
-BOOTSTRAP_SERVERS   : B O O T S T R A P UNDERSCORE S E R V E R S ;
-CHECK               : C H E C K ;
-CLEAR               : C L E A R ;
-COMMIT              : C O M M I T ;
-COMMITTED           : C O M M I T T E D ;
-CONFIG              : C O N F I G ;
-CONFIGS             : C O N F I G S;
-CONSUMER_GROUP      : C O N S U M E R UNDERSCORE G R O U P ;
-CREDENTIALS         : C R E D E N T I A L S ;
-CSV                 : C S V ;
-DATA                : D A T A ;
-DELIMITER           : D E L I M I T E R ;
-DATABASE            : D A T A B A S E ;
-DENY                : D E N Y ;
-DIRECTORY           : D I R E C T O R Y ;
-DROP                : D R O P ;
-DUMP                : D U M P ;
-DURABILITY          : D U R A B I L I T Y ;
-EXECUTE             : E X E C U T E ;
-FOR                 : F O R ;
-FOREACH             : F O R E A C H;
-FREE                : F R E E ;
-FREE_MEMORY         : F R E E UNDERSCORE M E M O R Y ;
-FROM                : F R O M ;
-GLOBAL              : G L O B A L ;
-GRANT               : G R A N T ;
-GRANTS              : G R A N T S ;
-HEADER              : H E A D E R ;
-IDENTIFIED          : I D E N T I F I E D ;
-IGNORE              : I G N O R E ;
-ISOLATION           : I S O L A T I O N ;
-KAFKA               : K A F K A ;
-LEVEL               : L E V E L ;
-LOAD                : L O A D ;
-LOCK                : L O C K ;
-MAIN                : M A I N ;
-MODE                : M O D E ;
-MODULE_READ         : M O D U L E UNDERSCORE R E A D ;
-MODULE_WRITE        : M O D U L E UNDERSCORE W R I T E ;
-NEXT                : N E X T ;
-NO                  : N O ;
-PASSWORD            : P A S S W O R D ;
-PORT                : P O R T ;
-PRIVILEGES          : P R I V I L E G E S ;
-PULSAR              : P U L S A R ;
-READ                : R E A D ;
-READ_FILE           : R E A D UNDERSCORE F I L E ;
-REGISTER            : R E G I S T E R ;
-REPLICA             : R E P L I C A ;
-REPLICAS            : R E P L I C A S ;
-REPLICATION         : R E P L I C A T I O N ;
-REVOKE              : R E V O K E ;
-ROLE                : R O L E ;
-ROLES               : R O L E S ;
-QUOTE               : Q U O T E ;
-SCHEMA              : S C H E M A ;
-SCHEMAS             : S C H E M A S ;
-SERVICE_URL         : S E R V I C E UNDERSCORE U R L ;
-SESSION             : S E S S I O N ;
-SETTING             : S E T T I N G ;
-SETTINGS            : S E T T I N G S ;
-SNAPSHOT            : S N A P S H O T ;
-START               : S T A R T ;
-STATS               : S T A T S ;
-STOP                : S T O P ;
-STREAM              : S T R E A M ;
-STREAMS             : S T R E A M S ;
-SYNC                : S Y N C ;
-TIMEOUT             : T I M E O U T ;
-TO                  : T O ;
-TOPICS              : T O P I C S;
-TRANSACTION         : T R A N S A C T I O N ;
-TRANSFORM           : T R A N S F O R M ;
-TRIGGER             : T R I G G E R ;
-TRIGGERS            : T R I G G E R S ;
-UNCOMMITTED         : U N C O M M I T T E D ;
-UNLOCK              : U N L O C K ;
-UPDATE              : U P D A T E ;
-USER                : U S E R ;
-USERS               : U S E R S ;
-VERSION             : V E R S I O N ;
-WEBSOCKET           : W E B S O C K E T ;