Fix shared module loading

* Moving function add_query_module from CMakeLists from tests/e2e/magic_functions to tests/e2e

* Adding failing test copying behavior when loading c module (.so) into memgraph.

* Fixing issue where NO_ERROR status returned  MgpTransAddFixedResult was converted to false

* Removing unnecessary transformation

* removing incorrect parameterization of test

* re-adding parametrized transformation

.githooks/pre-commit

@@ -16,6 +16,7 @@ tmpdir=$(mktemp -d repo-XXXXXXXX)
 trap "rm -rf $tmpdir" EXIT INT
 
 modified_files=$(git diff --cached --name-only --diff-filter=AM $against | sed -nE "/.*\.(cpp|cc|cxx|c|h|hpp)$/p")
+FAIL=0
 for file in $modified_files; do
   echo "Checking $file..."
 
@@ -25,19 +26,20 @@ for file in $modified_files; do
 
   echo "Running clang-format..."
   $project_folder/tools/git-clang-format $tmpdir/$file
-  code=$?
+  CODE=$?
 
-  if [ $code -ne 0 ]; then
+  if [ $CODE -ne 0 ]; then
     break
   fi
 
+  # Do not break header checker
   echo "Running header checker..."
   $project_folder/tools/header-checker.py $tmpdir/$file $file --amend-year
-  code=$?
-
-  if [ $code -ne 0 ]; then
-    break
+  CODE=$?
+  if [ $CODE -ne 0 ]; then
+    FAIL=1
   fi
+
 done;
 
-return $code
+return ${FAIL}

.github/workflows/release_docker.yaml

@@ -0,0 +1,49 @@
+name: Publish Docker images
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Memgraph binary version to publish on Dockerhub."
+        required: true
+
+jobs:
+  docker_publish:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_ORGANIZATION_NAME: memgraph
+      DOCKER_REPOSITORY_NAME: memgraph
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Download memgraph binary
+        run: |
+          cd release/docker
+          curl -L https://download.memgraph.com/memgraph/v${{ 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: Build & push docker images
+        run: |
+          cd release/docker
+          docker buildx build \
+          --build-arg BINARY_NAME="memgraph-" \
+          --build-arg EXTENSION="deb" \
+          --platform linux/amd64,linux/arm64 \
+          --tag $DOCKER_ORGANIZATION_NAME/$DOCKER_REPOSITORY_NAME:${{ github.event.inputs.version }} \
+          --tag $DOCKER_ORGANIZATION_NAME/$DOCKER_REPOSITORY_NAME:latest \
+          --file memgraph_deb.dockerfile \
+          --push .

CMakeLists.txt

@@ -184,7 +184,8 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall \
     -Werror=switch -Werror=switch-bool -Werror=return-type \
     -Werror=return-stack-address \
-    -Wno-c99-designator")
+    -Wno-c99-designator \
+    -DBOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT")
 
 # Don't omit frame pointer in RelWithDebInfo, for additional callchain debug.
 set(CMAKE_CXX_FLAGS_RELWITHDEBINFO

CODEOWNERS

@@ -1 +1 @@
-* @gitbuda @antonio2368 @antaljanosbenjamin @kostasrim @jbajic
+* @antaljanosbenjamin @kostasrim

README.md

@@ -54,6 +54,18 @@ Memgraph is implemented in C/C++ and leverages an in-memory first architecture
 to ensure that you’re getting the best possible performance consistently and
 without surprises. It’s also ACID-compliant and highly available.
 
+## :video_game: Memgraph Playground
+
+You don't need to install anything to try out Memgraph. Check out 
+our **[Memgraph Playground](https://playground.memgraph.com/)** sandboxes in 
+your browser.
+
+<p align="left">
+  <a href="https://playground.memgraph.com/">
+    <img width="450px" alt="Memgraph Playground" src="https://download.memgraph.com/asset/github/memgraph/memgraph-playground.png">
+  </a>
+</p>
+
 ## :floppy_disk: Download & Install
 
 ### Windows

environment/os/centos-7.sh

@@ -106,7 +106,7 @@ install() {
       https://repo.ius.io/ius-release-el7.rpm
     yum update -y
     yum install -y wget python3 python3-pip
-    yum install -y git224
+    yum install -y git
     for pkg in $1; do
         if [ "$pkg" == libipt ]; then
             if ! yum list installed libipt >/dev/null 2>/dev/null; then

environment/os/debian-11-arm.sh

@@ -0,0 +1,104 @@
+#!/bin/bash
+
+set -Eeuo pipefail
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+source "$DIR/../util.sh"
+
+TOOLCHAIN_BUILD_DEPS=(
+    coreutils gcc g++ build-essential make # generic build tools
+    wget # used for archive download
+    gnupg # used for archive signature verification
+    tar gzip bzip2 xz-utils unzip # used for archive unpacking
+    zlib1g-dev # zlib library used for all builds
+    libexpat1-dev liblzma-dev python3-dev texinfo # for gdb
+    libcurl4-openssl-dev # for cmake
+    libreadline-dev # for cmake and llvm
+    libffi-dev libxml2-dev # for llvm
+    libedit-dev libpcre3-dev automake bison # for swig
+    curl # snappy
+    file # for libunwind
+    libssl-dev # for libevent
+    libgmp-dev
+    gperf # for proxygen
+    git # for fbthrift
+)
+
+TOOLCHAIN_RUN_DEPS=(
+    make # generic build tools
+    tar gzip bzip2 xz-utils # used for archive unpacking
+    zlib1g # zlib library used for all builds
+    libexpat1 liblzma5 python3 # for gdb
+    libcurl4 # for cmake
+    file # for CPack
+    libreadline8 # for cmake and llvm
+    libffi7 libxml2 # for llvm
+    libssl-dev # for libevent
+)
+
+MEMGRAPH_BUILD_DEPS=(
+    git # source code control
+    make pkg-config # build system
+    curl wget # for downloading libs
+    uuid-dev default-jre-headless # required by antlr
+    libreadline-dev # for memgraph console
+    libpython3-dev python3-dev # for query modules
+    libssl-dev
+    libseccomp-dev
+    netcat # tests are using nc to wait for memgraph
+    python3 virtualenv python3-virtualenv python3-pip # for qa, macro_benchmark and stress tests
+    python3-yaml # for the configuration generator
+    libcurl4-openssl-dev # mg-requests
+    sbcl # for custom Lisp C++ preprocessing
+    doxygen graphviz # source documentation generators
+    mono-runtime mono-mcs zip unzip default-jdk-headless # for driver tests
+    golang nodejs npm
+    autoconf # for jemalloc code generation
+    libtool  # for protobuf code generation
+)
+
+list() {
+    echo "$1"
+}
+
+check() {
+    check_all_dpkg "$1"
+}
+
+install() {
+    cat >/etc/apt/sources.list <<EOF
+deb http://deb.debian.org/debian bullseye main
+deb-src http://deb.debian.org/debian bullseye main
+
+deb http://deb.debian.org/debian-security/ bullseye-security main
+deb-src http://deb.debian.org/debian-security/ bullseye-security main
+
+deb http://deb.debian.org/debian bullseye-updates main
+deb-src http://deb.debian.org/debian bullseye-updates main
+EOF
+    cd "$DIR"
+    apt update
+    # If GitHub Actions runner is installed, append LANG to the environment.
+    # Python related tests doesn't work the LANG export.
+    if [ -d "/home/gh/actions-runner" ]; then
+        echo "LANG=en_US.utf8" >> /home/gh/actions-runner/.env
+    else
+        echo "NOTE: export LANG=en_US.utf8"
+    fi
+    apt install -y wget
+    for pkg in $1; do
+        if [ "$pkg" == dotnet-sdk-3.1 ]; then
+            if ! dpkg -s "$pkg" 2>/dev/null >/dev/null; then
+                wget -nv https://packages.microsoft.com/config/debian/10/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
+                dpkg -i packages-microsoft-prod.deb
+                apt-get update
+                apt-get install -y apt-transport-https dotnet-sdk-3.1
+            fi
+            continue
+        fi
+        apt install -y "$pkg"
+    done
+}
+
+deps=$2"[*]"
+"$1" "${!deps}"

environment/os/debian-11.sh

@@ -52,7 +52,7 @@ MEMGRAPH_BUILD_DEPS=(
     sbcl # for custom Lisp C++ preprocessing
     doxygen graphviz # source documentation generators
     mono-runtime mono-mcs zip unzip default-jdk-headless # for driver tests
-    golang nodejs npm
+    dotnet-sdk-3.1 golang nodejs npm
     autoconf # for jemalloc code generation
     libtool  # for protobuf code generation
 )

environment/util.sh

@@ -5,6 +5,10 @@ operating_system() {
     sort | cut -d '=' -f 2- | sed 's/"//g' | paste -s -d '-'
 }
 
+architecture() {
+    uname -m
+}
+
 check_all_yum() {
     local missing=""
     for pkg in $1; do

include/mg_procedure.h

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -549,6 +549,8 @@ enum mgp_error mgp_path_equal(struct mgp_path *p1, struct mgp_path *p2, int *res
 struct mgp_result;
 /// Represents a record of resulting field values.
 struct mgp_result_record;
+/// Represents a return type for magic functions
+struct mgp_func_result;
 
 /// Set the error as the result of the procedure.
 /// Return MGP_ERROR_UNABLE_TO_ALLOCATE ff there's no memory for copying the error message.
@@ -1290,6 +1292,9 @@ struct mgp_module;
 /// Describes a procedure of a query module.
 struct mgp_proc;
 
+/// Describes a Memgraph magic function.
+struct mgp_func;
+
 /// Entry-point for a query module read procedure, invoked through openCypher.
 ///
 /// Passed in arguments will not live longer than the callback's execution.
@@ -1502,6 +1507,84 @@ typedef void (*mgp_trans_cb)(struct mgp_messages *, struct mgp_graph *, struct m
 enum mgp_error mgp_module_add_transformation(struct mgp_module *module, const char *name, mgp_trans_cb cb);
 /// @}
 
+/// @name Memgraph Magic Functions API
+///
+/// API for creating the Memgraph magic functions. It is used to create external-source stateless methods which can
+/// be called by using openCypher query language. These methods should not modify the original graph and should use only
+/// the values provided as arguments to the method.
+///
+///@{
+
+/// Add a required argument to a function.
+///
+/// The order of the added arguments corresponds to the signature of the openCypher function.
+/// Note, that required arguments are followed by optional arguments.
+///
+/// The `name` must be a valid identifier, following the same rules as the
+/// function `name` in mgp_module_add_function.
+///
+/// Passed in `type` describes what kind of values can be used as the argument.
+///
+/// Return MGP_ERROR_UNABLE_TO_ALLOCATE if unable to allocate memory for an argument.
+/// Return MGP_ERROR_INVALID_ARGUMENT if `name` is not a valid argument name.
+/// Return MGP_ERROR_LOGIC_ERROR if the function already has any optional argument.
+enum mgp_error mgp_func_add_arg(struct mgp_func *func, const char *name, struct mgp_type *type);
+
+/// Add an optional argument with a default value to a function.
+///
+/// The order of the added arguments corresponds to the signature of the openCypher function.
+/// Note, that required arguments are followed by optional arguments.
+///
+/// The `name` must be a valid identifier, following the same rules as the
+/// function `name` in mgp_module_add_function.
+///
+/// Passed in `type` describes what kind of values can be used as the argument.
+///
+/// `default_value` is copied and set as the default value for the argument.
+/// Don't forget to call mgp_value_destroy when you are done using
+/// `default_value`. When the function is called, if this argument is not
+/// provided, `default_value` will be used instead. `default_value` must not be
+/// a graph element (node, relationship, path) and it must satisfy the given
+/// `type`.
+///
+/// Return MGP_ERROR_UNABLE_TO_ALLOCATE if unable to allocate memory for an argument.
+/// Return MGP_ERROR_INVALID_ARGUMENT if `name` is not a valid argument name.
+/// Return MGP_ERROR_VALUE_CONVERSION if `default_value` is a graph element (vertex, edge or path).
+/// Return MGP_ERROR_LOGIC_ERROR if `default_value` does not satisfy `type`.
+enum mgp_error mgp_func_add_opt_arg(struct mgp_func *func, const char *name, struct mgp_type *type,
+                                    struct mgp_value *default_value);
+
+/// Entry-point for a custom Memgraph awesome function.
+///
+/// Passed in arguments will not live longer than the callback's execution.
+/// Therefore, you must not store them globally or use the passed in mgp_memory
+/// to allocate global resources.
+typedef void (*mgp_func_cb)(struct mgp_list *, struct mgp_func_context *, struct mgp_func_result *,
+                            struct mgp_memory *);
+
+/// Register a Memgraph magic function
+///
+/// The `name` must be a sequence of digits, underscores, lowercase and
+/// uppercase Latin letters. The name must begin with a non-digit character.
+/// Note that Unicode characters are not allowed.
+///
+/// Return MGP_ERROR_UNABLE_TO_ALLOCATE if unable to allocate memory for mgp_func.
+/// Return MGP_ERROR_INVALID_ARGUMENT if `name` is not a valid function name.
+/// RETURN MGP_ERROR_LOGIC_ERROR if a function with the same name was already registered.
+enum mgp_error mgp_module_add_function(struct mgp_module *module, const char *name, mgp_func_cb cb,
+                                       struct mgp_func **result);
+
+/// Set an error message as an output to the Magic function
+/// Return MGP_ERROR_UNABLE_TO_ALLOCATE if there's no memory for copying the error message.
+enum mgp_error mgp_func_result_set_error_msg(struct mgp_func_result *result, const char *error_msg,
+                                             struct mgp_memory *memory);
+
+/// Set an output value for the Magic function
+/// Return MGP_ERROR_UNABLE_TO_ALLOCATE if unable to allocate memory to copy the mgp_value to mgp_func_result.
+enum mgp_error mgp_func_result_set_value(struct mgp_func_result *result, struct mgp_value *value,
+                                         struct mgp_memory *memory);
+/// @}
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif

include/mgp.py

@@ -40,6 +40,7 @@ class InvalidContextError(Exception):
     """
     Signals using a graph element instance outside of the registered procedure.
     """
+
     pass
 
 
@@ -47,6 +48,7 @@ class UnknownError(_mgp.UnknownError):
     """
     Signals unspecified failure.
     """
+
     pass
 
 
@@ -54,6 +56,7 @@ class UnableToAllocateError(_mgp.UnableToAllocateError):
     """
     Signals failed memory allocation.
     """
+
     pass
 
 
@@ -61,6 +64,7 @@ class InsufficientBufferError(_mgp.InsufficientBufferError):
     """
     Signals that some buffer is not big enough.
     """
+
     pass
 
 
@@ -69,6 +73,7 @@ class OutOfRangeError(_mgp.OutOfRangeError):
     Signals that an index-like parameter has a value that is outside its
     possible values.
     """
+
     pass
 
 
@@ -77,6 +82,7 @@ class LogicErrorError(_mgp.LogicErrorError):
     Signals faulty logic within the program such as violating logical
     preconditions or class invariants and may be preventable.
     """
+
     pass
 
 
@@ -84,6 +90,7 @@ class DeletedObjectError(_mgp.DeletedObjectError):
     """
     Signals accessing an already deleted object.
     """
+
     pass
 
 
@@ -91,6 +98,7 @@ class InvalidArgumentError(_mgp.InvalidArgumentError):
     """
     Signals that some of the arguments have invalid values.
     """
+
     pass
 
 
@@ -98,6 +106,7 @@ class KeyAlreadyExistsError(_mgp.KeyAlreadyExistsError):
     """
     Signals that a key already exists in a container-like object.
     """
+
     pass
 
 
@@ -105,6 +114,7 @@ class ImmutableObjectError(_mgp.ImmutableObjectError):
     """
     Signals modification of an immutable object.
     """
+
     pass
 
 
@@ -112,6 +122,7 @@ class ValueConversionError(_mgp.ValueConversionError):
     """
     Signals that the conversion failed between python and cypher values.
     """
+
     pass
 
 
@@ -120,12 +131,14 @@ class SerializationError(_mgp.SerializationError):
     Signals serialization error caused by concurrent modifications from
     different transactions.
     """
+
     pass
 
 
 class Label:
     """Label of a Vertex."""
-    __slots__ = ('_name',)
+
+    __slots__ = ("_name",)
 
     def __init__(self, name: str):
         self._name = name
@@ -145,19 +158,22 @@ class Label:
 # Named property value of a Vertex or an Edge.
 # It would be better to use typing.NamedTuple with typed fields, but that is
 # not available in Python 3.5.
-Property = namedtuple('Property', ('name', 'value'))
+Property = namedtuple("Property", ("name", "value"))
 
 
 class Properties:
     """
     A collection of properties either on a Vertex or an Edge.
     """
-    __slots__ = ('_vertex_or_edge', '_len',)
+
+    __slots__ = (
+        "_vertex_or_edge",
+        "_len",
+    )
 
     def __init__(self, vertex_or_edge):
         if not isinstance(vertex_or_edge, (_mgp.Vertex, _mgp.Edge)):
-            raise TypeError("Expected '_mgp.Vertex' or '_mgp.Edge', \
-                            got {}".format(type(vertex_or_edge)))
+            raise TypeError("Expected '_mgp.Vertex' or '_mgp.Edge', got {}".format(type(vertex_or_edge)))
         self._len = None
         self._vertex_or_edge = vertex_or_edge
 
@@ -330,7 +346,8 @@ class Properties:
 
 class EdgeType:
     """Type of an Edge."""
-    __slots__ = ('_name',)
+
+    __slots__ = ("_name",)
 
     def __init__(self, name):
         self._name = name
@@ -348,7 +365,7 @@ class EdgeType:
 
 
 if sys.version_info >= (3, 5, 2):
-    EdgeId = typing.NewType('EdgeId', int)
+    EdgeId = typing.NewType("EdgeId", int)
 else:
     EdgeId = int
 
@@ -360,12 +377,12 @@ class Edge:
     a query. You should not globally store an instance of an Edge. Using an
     invalid Edge instance will raise InvalidContextError.
     """
-    __slots__ = ('_edge',)
+
+    __slots__ = ("_edge",)
 
     def __init__(self, edge):
         if not isinstance(edge, _mgp.Edge):
-            raise TypeError(
-                "Expected '_mgp.Edge', got '{}'".format(type(edge)))
+            raise TypeError("Expected '_mgp.Edge', got '{}'".format(type(edge)))
         self._edge = edge
 
     def __deepcopy__(self, memo):
@@ -408,7 +425,7 @@ class Edge:
         return EdgeType(self._edge.get_type_name())
 
     @property
-    def from_vertex(self) -> 'Vertex':
+    def from_vertex(self) -> "Vertex":
         """
         Get the source vertex.
 
@@ -419,7 +436,7 @@ class Edge:
         return Vertex(self._edge.from_vertex())
 
     @property
-    def to_vertex(self) -> 'Vertex':
+    def to_vertex(self) -> "Vertex":
         """
         Get the destination vertex.
 
@@ -453,7 +470,7 @@ class Edge:
 
 
 if sys.version_info >= (3, 5, 2):
-    VertexId = typing.NewType('VertexId', int)
+    VertexId = typing.NewType("VertexId", int)
 else:
     VertexId = int
 
@@ -465,12 +482,12 @@ class Vertex:
     in a query. You should not globally store an instance of a Vertex. Using an
     invalid Vertex instance will raise InvalidContextError.
     """
-    __slots__ = ('_vertex',)
+
+    __slots__ = ("_vertex",)
 
     def __init__(self, vertex):
         if not isinstance(vertex, _mgp.Vertex):
-            raise TypeError(
-                "Expected '_mgp.Vertex', got '{}'".format(type(vertex)))
+            raise TypeError("Expected '_mgp.Vertex', got '{}'".format(type(vertex)))
         self._vertex = vertex
 
     def __deepcopy__(self, memo):
@@ -513,8 +530,7 @@ class Vertex:
         """
         if not self.is_valid():
             raise InvalidContextError()
-        return tuple(Label(self._vertex.label_at(i))
-                     for i in range(self._vertex.labels_count()))
+        return tuple(Label(self._vertex.label_at(i)) for i in range(self._vertex.labels_count()))
 
     def add_label(self, label: str) -> None:
         """
@@ -615,7 +631,8 @@ class Vertex:
 
 class Path:
     """Path containing Vertex and Edge instances."""
-    __slots__ = ('_path', '_vertices', '_edges')
+
+    __slots__ = ("_path", "_vertices", "_edges")
 
     def __init__(self, starting_vertex_or_path: typing.Union[_mgp.Path, Vertex]):
         """Initialize with a starting Vertex.
@@ -636,8 +653,7 @@ class Path:
                 raise InvalidContextError()
             self._path = _mgp.Path.make_with_start(vertex)
         else:
-            raise TypeError("Expected '_mgp.Vertex' or '_mgp.Path', got '{}'"
-                            .format(type(starting_vertex_or_path)))
+            raise TypeError("Expected '_mgp.Vertex' or '_mgp.Path', got '{}'".format(type(starting_vertex_or_path)))
 
     def __copy__(self):
         if not self.is_valid():
@@ -678,8 +694,7 @@ class Path:
         extension.
         """
         if not isinstance(edge, Edge):
-            raise TypeError(
-                "Expected '_mgp.Edge', got '{}'".format(type(edge)))
+            raise TypeError("Expected '_mgp.Edge', got '{}'".format(type(edge)))
         if not self.is_valid() or not edge.is_valid():
             raise InvalidContextError()
         self._path.expand(edge._edge)
@@ -698,8 +713,7 @@ class Path:
             raise InvalidContextError()
         if self._vertices is None:
             num_vertices = self._path.size() + 1
-            self._vertices = tuple(Vertex(self._path.vertex_at(i))
-                                   for i in range(num_vertices))
+            self._vertices = tuple(Vertex(self._path.vertex_at(i)) for i in range(num_vertices))
         return self._vertices
 
     @property
@@ -713,14 +727,14 @@ class Path:
             raise InvalidContextError()
         if self._edges is None:
             num_edges = self._path.size()
-            self._edges = tuple(Edge(self._path.edge_at(i))
-                                for i in range(num_edges))
+            self._edges = tuple(Edge(self._path.edge_at(i)) for i in range(num_edges))
         return self._edges
 
 
 class Record:
     """Represents a record of resulting field values."""
-    __slots__ = ('fields',)
+
+    __slots__ = ("fields",)
 
     def __init__(self, **kwargs):
         """Initialize with name=value fields in kwargs."""
@@ -729,12 +743,12 @@ class Record:
 
 class Vertices:
     """Iterable over vertices in a graph."""
-    __slots__ = ('_graph', '_len')
+
+    __slots__ = ("_graph", "_len")
 
     def __init__(self, graph):
         if not isinstance(graph, _mgp.Graph):
-            raise TypeError(
-                "Expected '_mgp.Graph', got '{}'".format(type(graph)))
+            raise TypeError("Expected '_mgp.Graph', got '{}'".format(type(graph)))
         self._graph = graph
         self._len = None
 
@@ -791,12 +805,12 @@ class Vertices:
 
 class Graph:
     """State of the graph database in current ProcCtx."""
-    __slots__ = ('_graph',)
+
+    __slots__ = ("_graph",)
 
     def __init__(self, graph):
         if not isinstance(graph, _mgp.Graph):
-            raise TypeError(
-                "Expected '_mgp.Graph', got '{}'".format(type(graph)))
+            raise TypeError("Expected '_mgp.Graph', got '{}'".format(type(graph)))
         self._graph = graph
 
     def __deepcopy__(self, memo):
@@ -885,8 +899,7 @@ class Graph:
             raise InvalidContextError()
         self._graph.detach_delete_vertex(vertex._vertex)
 
-    def create_edge(self, from_vertex: Vertex, to_vertex: Vertex,
-                    edge_type: EdgeType) -> None:
+    def create_edge(self, from_vertex: Vertex, to_vertex: Vertex, edge_type: EdgeType) -> None:
         """
         Create an edge.
 
@@ -899,8 +912,7 @@ class Graph:
         """
         if not self.is_valid():
             raise InvalidContextError()
-        return Edge(self._graph.create_edge(from_vertex._vertex,
-                                            to_vertex._vertex, edge_type.name))
+        return Edge(self._graph.create_edge(from_vertex._vertex, to_vertex._vertex, edge_type.name))
 
     def delete_edge(self, edge: Edge) -> None:
         """
@@ -918,6 +930,7 @@ class Graph:
 
 class AbortError(Exception):
     """Signals that the procedure was asked to abort its execution."""
+
     pass
 
 
@@ -927,12 +940,12 @@ class ProcCtx:
     Access to a ProcCtx is only valid during a single execution of a procedure
     in a query. You should not globally store a ProcCtx instance.
     """
-    __slots__ = ('_graph',)
+
+    __slots__ = ("_graph",)
 
     def __init__(self, graph):
         if not isinstance(graph, _mgp.Graph):
-            raise TypeError(
-                "Expected '_mgp.Graph', got '{}'".format(type(graph)))
+            raise TypeError("Expected '_mgp.Graph', got '{}'".format(type(graph)))
         self._graph = Graph(graph)
 
     def is_valid(self) -> bool:
@@ -969,8 +982,7 @@ LocalDateTime = datetime.datetime
 
 Duration = datetime.timedelta
 
-Any = typing.Union[bool, str, Number, Map, Path,
-                   list, Date, LocalTime, LocalDateTime, Duration]
+Any = typing.Union[bool, str, Number, Map, Path, list, Date, LocalTime, LocalDateTime, Duration]
 
 List = typing.List
 
@@ -1003,7 +1015,7 @@ def _typing_to_cypher_type(type_):
         Date: _mgp.type_date(),
         LocalTime: _mgp.type_local_time(),
         LocalDateTime: _mgp.type_local_date_time(),
-        Duration: _mgp.type_duration()
+        Duration: _mgp.type_duration(),
     }
     try:
         return simple_types[type_]
@@ -1021,14 +1033,14 @@ def _typing_to_cypher_type(type_):
             if type(None) in type_args:
                 types = tuple(t for t in type_args if t is not type(None))  # noqa E721
                 if len(types) == 1:
-                    type_arg, = types
+                    (type_arg,) = types
                 else:
                     # We cannot do typing.Union[*types], so do the equivalent
                     # with __getitem__ which does not even need arg unpacking.
                     type_arg = typing.Union.__getitem__(types)
                 return _mgp.type_nullable(_typing_to_cypher_type(type_arg))
         elif complex_type == list:
-            type_arg, = type_args
+            (type_arg,) = type_args
             return _mgp.type_list(_typing_to_cypher_type(type_arg))
         raise UnsupportedTypingError(type_)
     else:
@@ -1038,13 +1050,17 @@ def _typing_to_cypher_type(type_):
         # printed the same way. `typing.List[type]` is printed as such, while
         # `typing.Optional[type]` is printed as 'typing.Union[type, NoneType]'
         def parse_type_args(type_as_str):
-            return tuple(map(str.strip,
-                             type_as_str[type_as_str.index('[') + 1: -1].split(',')))
+            return tuple(
+                map(
+                    str.strip,
+                    type_as_str[type_as_str.index("[") + 1 : -1].split(","),
+                )
+            )
 
         def fully_qualified_name(cls):
-            if cls.__module__ is None or cls.__module__ == 'builtins':
+            if cls.__module__ is None or cls.__module__ == "builtins":
                 return cls.__name__
-            return cls.__module__ + '.' + cls.__name__
+            return cls.__module__ + "." + cls.__name__
 
         def get_simple_type(type_as_str):
             for simple_type, cypher_type in simple_types.items():
@@ -1060,28 +1076,26 @@ def _typing_to_cypher_type(type_):
                     pass
 
         def parse_typing(type_as_str):
-            if type_as_str.startswith('typing.Union'):
+            if type_as_str.startswith("typing.Union"):
                 type_args_as_str = parse_type_args(type_as_str)
                 none_type_as_str = type(None).__name__
                 if none_type_as_str in type_args_as_str:
-                    types = tuple(
-                        t for t in type_args_as_str if t != none_type_as_str)
+                    types = tuple(t for t in type_args_as_str if t != none_type_as_str)
                     if len(types) == 1:
-                        type_arg_as_str, = types
+                        (type_arg_as_str,) = types
                     else:
-                        type_arg_as_str = 'typing.Union[' + \
-                            ', '.join(types) + ']'
+                        type_arg_as_str = "typing.Union[" + ", ".join(types) + "]"
                     simple_type = get_simple_type(type_arg_as_str)
                     if simple_type is not None:
                         return _mgp.type_nullable(simple_type)
                     return _mgp.type_nullable(parse_typing(type_arg_as_str))
-            elif type_as_str.startswith('typing.List'):
+            elif type_as_str.startswith("typing.List"):
                 type_arg_as_str = parse_type_args(type_as_str)
 
                 if len(type_arg_as_str) > 1:
                     # Nested object could be a type consisting of a list of types (e.g. mgp.Map)
                     # so we need to join the parts.
-                    type_arg_as_str = ', '.join(type_arg_as_str)
+                    type_arg_as_str = ", ".join(type_arg_as_str)
                 else:
                     type_arg_as_str = type_arg_as_str[0]
 
@@ -1096,9 +1110,11 @@ def _typing_to_cypher_type(type_):
 
 # Procedure registration
 
+
 class Deprecated:
     """Annotate a resulting Record's field as deprecated."""
-    __slots__ = ('field_type',)
+
+    __slots__ = ("field_type",)
 
     def __init__(self, type_):
         self.field_type = type_
@@ -1106,8 +1122,7 @@ class Deprecated:
 
 def raise_if_does_not_meet_requirements(func: typing.Callable[..., Record]):
     if not callable(func):
-        raise TypeError("Expected a callable object, got an instance of '{}'"
-                        .format(type(func)))
+        raise TypeError("Expected a callable object, got an instance of '{}'".format(type(func)))
     if inspect.iscoroutinefunction(func):
         raise TypeError("Callable must not be 'async def' function")
     if sys.version_info >= (3, 6):
@@ -1117,24 +1132,25 @@ def raise_if_does_not_meet_requirements(func: typing.Callable[..., Record]):
         raise NotImplementedError("Generator functions are not supported")
 
 
-def _register_proc(func: typing.Callable[..., Record],
-                   is_write: bool):
+def _register_proc(func: typing.Callable[..., Record], is_write: bool):
     raise_if_does_not_meet_requirements(func)
-    register_func = (
-        _mgp.Module.add_write_procedure if is_write
-        else _mgp.Module.add_read_procedure)
+    register_func = _mgp.Module.add_write_procedure if is_write else _mgp.Module.add_read_procedure
     sig = inspect.signature(func)
     params = tuple(sig.parameters.values())
     if params and params[0].annotation is ProcCtx:
+
         @wraps(func)
         def wrapper(graph, args):
             return func(ProcCtx(graph), *args)
+
         params = params[1:]
         mgp_proc = register_func(_mgp._MODULE, wrapper)
     else:
+
         @wraps(func)
         def wrapper(graph, args):
             return func(*args)
+
         mgp_proc = register_func(_mgp._MODULE, wrapper)
     for param in params:
         name = param.name
@@ -1149,8 +1165,7 @@ def _register_proc(func: typing.Callable[..., Record],
     if sig.return_annotation is not sig.empty:
         record = sig.return_annotation
         if not isinstance(record, Record):
-            raise TypeError("Expected '{}' to return 'mgp.Record', got '{}'"
-                            .format(func.__name__, type(record)))
+            raise TypeError("Expected '{}' to return 'mgp.Record', got '{}'".format(func.__name__, type(record)))
         for name, type_ in record.fields.items():
             if isinstance(type_, Deprecated):
                 cypher_type = _typing_to_cypher_type(type_.field_type)
@@ -1257,20 +1272,22 @@ class InvalidMessageError(Exception):
     """
     Signals using a message instance outside of the registered transformation.
     """
+
     pass
 
 
 SOURCE_TYPE_KAFKA = _mgp.SOURCE_TYPE_KAFKA
 SOURCE_TYPE_PULSAR = _mgp.SOURCE_TYPE_PULSAR
 
+
 class Message:
     """Represents a message from a stream."""
-    __slots__ = ('_message',)
+
+    __slots__ = ("_message",)
 
     def __init__(self, message):
         if not isinstance(message, _mgp.Message):
-            raise TypeError(
-                "Expected '_mgp.Message', got '{}'".format(type(message)))
+            raise TypeError("Expected '_mgp.Message', got '{}'".format(type(message)))
         self._message = message
 
     def __deepcopy__(self, memo):
@@ -1353,17 +1370,18 @@ class Message:
 
 class InvalidMessagesError(Exception):
     """Signals using a messages instance outside of the registered transformation."""
+
     pass
 
 
 class Messages:
     """Represents a list of messages from a stream."""
-    __slots__ = ('_messages',)
+
+    __slots__ = ("_messages",)
 
     def __init__(self, messages):
         if not isinstance(messages, _mgp.Messages):
-            raise TypeError(
-                "Expected '_mgp.Messages', got '{}'".format(type(messages)))
+            raise TypeError("Expected '_mgp.Messages', got '{}'".format(type(messages)))
         self._messages = messages
 
     def __deepcopy__(self, memo):
@@ -1395,12 +1413,12 @@ class TransCtx:
     Access to a TransCtx is only valid during a single execution of a transformation.
     You should not globally store a TransCtx instance.
     """
-    __slots__ = ('_graph')
+
+    __slots__ = "_graph"
 
     def __init__(self, graph):
         if not isinstance(graph, _mgp.Graph):
-            raise TypeError(
-                "Expected '_mgp.Graph', got '{}'".format(type(graph)))
+            raise TypeError("Expected '_mgp.Graph', got '{}'".format(type(graph)))
         self._graph = Graph(graph)
 
     def is_valid(self) -> bool:
@@ -1420,21 +1438,76 @@ def transformation(func: typing.Callable[..., Record]):
     params = tuple(sig.parameters.values())
     if not params or not params[0].annotation is Messages:
         if not len(params) == 2 or not params[1].annotation is Messages:
-            raise NotImplementedError(
-                "Valid signatures for transformations are (TransCtx, Messages) or (Messages)")
+            raise NotImplementedError("Valid signatures for transformations are (TransCtx, Messages) or (Messages)")
     if params[0].annotation is TransCtx:
+
         @wraps(func)
         def wrapper(graph, messages):
             return func(TransCtx(graph), messages)
+
         _mgp._MODULE.add_transformation(wrapper)
     else:
+
         @wraps(func)
         def wrapper(graph, messages):
             return func(messages)
+
         _mgp._MODULE.add_transformation(wrapper)
     return func
 
 
+class FuncCtx:
+    """Context of a function being executed.
+
+    Access to a FuncCtx is only valid during a single execution of a transformation.
+    You should not globally store a FuncCtx instance.
+    """
+
+    __slots__ = "_graph"
+
+    def __init__(self, graph):
+        if not isinstance(graph, _mgp.Graph):
+            raise TypeError("Expected '_mgp.Graph', got '{}'".format(type(graph)))
+        self._graph = Graph(graph)
+
+    def is_valid(self) -> bool:
+        return self._graph.is_valid()
+
+
+def function(func: typing.Callable):
+    raise_if_does_not_meet_requirements(func)
+    register_func = _mgp.Module.add_function
+    sig = inspect.signature(func)
+    params = tuple(sig.parameters.values())
+    if params and params[0].annotation is FuncCtx:
+
+        @wraps(func)
+        def wrapper(graph, args):
+            return func(FuncCtx(graph), *args)
+
+        params = params[1:]
+        mgp_func = register_func(_mgp._MODULE, wrapper)
+    else:
+
+        @wraps(func)
+        def wrapper(graph, args):
+            return func(*args)
+
+        mgp_func = register_func(_mgp._MODULE, wrapper)
+
+    for param in params:
+        name = param.name
+        type_ = param.annotation
+        if type_ is param.empty:
+            type_ = object
+        cypher_type = _typing_to_cypher_type(type_)
+        if param.default is param.empty:
+            mgp_func.add_arg(name, cypher_type)
+        else:
+            mgp_func.add_opt_arg(name, cypher_type, param.default)
+    return func
+
+
 def _wrap_exceptions():
     def wrap_function(func):
         @wraps(func)
@@ -1463,6 +1536,7 @@ def _wrap_exceptions():
                 raise ValueConversionError(e)
             except _mgp.SerializationError as e:
                 raise SerializationError(e)
+
         return wrapped_func
 
     def wrap_prop_func(func):
@@ -1473,11 +1547,16 @@ def _wrap_exceptions():
             if inspect.isfunction(obj):
                 setattr(cls, name, wrap_function(obj))
             elif isinstance(obj, property):
-                setattr(cls, name, property(
-                    wrap_prop_func(obj.fget),
-                    wrap_prop_func(obj.fset),
-                    wrap_prop_func(obj.fdel),
-                    obj.__doc__))
+                setattr(
+                    cls,
+                    name,
+                    property(
+                        wrap_prop_func(obj.fget),
+                        wrap_prop_func(obj.fset),
+                        wrap_prop_func(obj.fdel),
+                        obj.__doc__,
+                    ),
+                )
 
     def defined_in_this_module(obj: object):
         return getattr(obj, "__module__", "") == __name__

init

@@ -65,8 +65,14 @@ else
 fi
 
 DISTRO=$(operating_system)
-echo "ALL BUILD PACKAGES: $($DIR/environment/os/$DISTRO.sh list MEMGRAPH_BUILD_DEPS)"
-$DIR/environment/os/$DISTRO.sh check MEMGRAPH_BUILD_DEPS
+ARCHITECTURE=$(architecture)
+if [ "${ARCHITECTURE}" = "arm64" ]; then
+  OS_SCRIPT=$DIR/environment/os/$DISTRO-arm.sh
+else
+  OS_SCRIPT=$DIR/environment/os/$DISTRO.sh
+fi
+echo "ALL BUILD PACKAGES: $($OS_SCRIPT list MEMGRAPH_BUILD_DEPS)"
+$OS_SCRIPT check MEMGRAPH_BUILD_DEPS
 echo "All packages are in-place..."
 
 # create a default build directory

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:            2026-18-02
+CHANGE DATE:            2026-27-04
 CHANGE LICENSE:         Apache License, Version 2.0
 
 For information about alternative licensing arrangements, please visit: https://memgraph.com/legal.

release/CMakeLists.txt

@@ -10,12 +10,12 @@ set(CPACK_PACKAGE_VENDOR "Memgraph Ltd.")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY
     "High performance, in-memory, transactional graph database")
 
-set(MG_ARCH_EXTENSION "noarch")
-
+# Setting arhitecture extension for deb packages
+set(MG_ARCH_EXTENSION_DEB "all")
 if (${MG_ARCH} STREQUAL "x86_64")
-    set(MG_ARCH_EXTENSION "x86_64")
+    set(MG_ARCH_EXTENSION_DEB "amd64")
 elseif (${MG_ARCH} STREQUAL "ARM64")
-    set(MG_ARCH_EXTENSION  "aarch64")
+    set(MG_ARCH_EXTENSION_DEB  "arm64")
 endif()
 
 # DEB specific
@@ -25,7 +25,7 @@ set(CPACK_DEBIAN_PACKAGE_MAINTAINER "tech@memgraph.com (Memgraph Ltd.)")
 set(CPACK_DEBIAN_PACKAGE_SECTION non-free/database)
 set(CPACK_DEBIAN_PACKAGE_HOMEPAGE https://memgraph.com)
 set(CPACK_DEBIAN_PACKAGE_VERSION "${MEMGRAPH_VERSION_DEB}")
-set(CPACK_DEBIAN_FILE_NAME "memgraph_${MEMGRAPH_VERSION_DEB}_${MG_ARCH_EXTENSION}.deb")
+set(CPACK_DEBIAN_FILE_NAME "memgraph_${MEMGRAPH_VERSION_DEB}_${MG_ARCH_EXTENSION_DEB}.deb")
 set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
     "${CMAKE_CURRENT_SOURCE_DIR}/debian/conffiles;"
     "${CMAKE_CURRENT_SOURCE_DIR}/debian/copyright;"
@@ -43,11 +43,18 @@ set(CPACK_DEBIAN_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION_SUMMARY}
 # We also depend on `python3` because we embed it in Memgraph.
 set(CPACK_DEBIAN_PACKAGE_DEPENDS "openssl (>= 1.1.0), python3 (>= 3.5.0)")
 
-# RPM specific
+# Setting arhitecture extension for rpm packages
+set(MG_ARCH_EXTENSION_RPM "noarch")
+if (${MG_ARCH} STREQUAL "x86_64")
+    set(MG_ARCH_EXTENSION_RPM "x86_64")
+elseif (${MG_ARCH} STREQUAL "ARM64")
+    set(MG_ARCH_EXTENSION_RPM  "aarch64")
+endif()
 
+# RPM specific
 set(CPACK_RPM_PACKAGE_URL https://memgraph.com)
 set(CPACK_RPM_PACKAGE_VERSION "${MEMGRAPH_VERSION_RPM}")
-set(CPACK_RPM_FILE_NAME "memgraph-${MEMGRAPH_VERSION_RPM}-1.${MG_ARCH_EXTENSION}.rpm")
+set(CPACK_RPM_FILE_NAME "memgraph-${MEMGRAPH_VERSION_RPM}-1.${MG_ARCH_EXTENSION_RPM}.rpm")
 set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION
   /var /var/lib /var/log /etc/logrotate.d
   /lib /lib/systemd /lib/systemd/system /lib/systemd/system/memgraph.service)

release/arm64/build_env.dockerfile

@@ -1,19 +1,19 @@
-FROM debian:bullseye
+FROM dokken/centos-stream-9
 
 ARG env_folder
 ARG toolchain_version
 
 COPY ${env_folder} /env_folder
 
-RUN apt update && apt install -y curl git
+RUN yum update && yum install -y curl git
 
-RUN /${env_folder}/os/debian-11-arm.sh install MEMGRAPH_BUILD_DEPS
-RUN /${env_folder}/os/debian-11-arm.sh install TOOLCHAIN_RUN_DEPS
+RUN /${env_folder}/os/centos-9.sh install MEMGRAPH_BUILD_DEPS
+RUN /${env_folder}/os/centos-9.sh install TOOLCHAIN_RUN_DEPS
 
 RUN rm -rf /env_folder
 
-RUN apt clean
+RUN yum clean all
 
-RUN curl https://s3.eu-west-1.amazonaws.com/deps.memgraph.io/${toolchain_version}/${toolchain_version}-binaries-debian-11-aarch64.tar.gz -o /tmp/toolchain.tar.gz \
+RUN curl https://s3.eu-west-1.amazonaws.com/deps.memgraph.io/${toolchain_version}/${toolchain_version}-binaries-centos-9-arm64.tar.gz -o /tmp/toolchain.tar.gz \
   && tar xvzf /tmp/toolchain.tar.gz -C /opt \
   && rm /tmp/toolchain.tar.gz

release/docker/memgraph_deb.dockerfile

@@ -1,19 +1,21 @@
 FROM debian:bullseye
 # NOTE: If you change the base distro update release/package as well.
 
-ARG release
+ARG BINARY_NAME
+ARG EXTENSION
+ARG TARGETARCH
 
 RUN apt-get update && apt-get install -y \
-    openssl libcurl4 libssl1.1 libseccomp2 python3 libpython3.9 python3-pip \
-    --no-install-recommends \
+  openssl libcurl4 libssl1.1 libseccomp2 python3 libpython3.9 python3-pip \
+  --no-install-recommends \
   && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN pip3 install networkx==2.4 numpy==1.21.4 scipy==1.7.3
 
-COPY ${release} /
+COPY "${BINARY_NAME}${TARGETARCH}.${EXTENSION}" /
 
 # Install memgraph package
-RUN dpkg -i ${release}
+RUN dpkg -i "${BINARY_NAME}${TARGETARCH}.deb"
 
 # Memgraph listens for Bolt Protocol on this port by default.
 EXPOSE 7687

release/docker/package_docker

@@ -55,7 +55,10 @@ image_name="memgraph:${version}"
 image_package_name="memgraph-${version}-docker.tar.gz"
 
 # Build docker image.
-docker build -t ${image_name} ${tag_latest} -f ${dockerfile_path} --build-arg release=${package_name}.${extension} .
+docker build -t ${image_name} ${tag_latest} -f ${dockerfile_path} \
+--build-arg BINARY_NAME=${package_name} \
+--build-arg EXTENSION=${extension} \
+--build-arg TARGETARCH="" .
 docker save ${image_name} ${latest_image} | gzip > ${image_package_name}
 rm "${package_name}.${extension}"
 echo "Built Docker image at '${working_dir}/${image_package_name}'"

src/audit/log.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -18,7 +18,7 @@
 #include "utils/logging.hpp"
 #include "utils/string.hpp"
 
-namespace audit {
+namespace memgraph::audit {
 
 // Helper function that converts a `storage::PropertyValue` to `nlohmann::json`.
 inline nlohmann::json PropertyValueToJson(const storage::PropertyValue &pv) {
@@ -143,4 +143,4 @@ void Log::Flush() {
   log_.Sync();
 }
 
-}  // namespace audit
+}  // namespace memgraph::audit

src/audit/log.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -17,7 +17,7 @@
 #include "utils/file.hpp"
 #include "utils/scheduler.hpp"
 
-namespace audit {
+namespace memgraph::audit {
 
 const uint64_t kBufferSizeDefault = 100000;
 const uint64_t kBufferFlushIntervalMillisDefault = 200;
@@ -71,4 +71,4 @@ class Log {
   std::mutex lock_;
 };
 
-}  // namespace audit
+}  // namespace memgraph::audit

src/auth/auth.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -42,8 +42,7 @@ DEFINE_VALIDATED_int32(auth_module_timeout_ms, 10000,
                        "response from the auth module.",
                        FLAG_IN_RANGE(100, 1800000));
 
-namespace auth {
-
+namespace memgraph::auth {
 const std::string kUserPrefix = "user:";
 const std::string kRolePrefix = "role:";
 const std::string kLinkPrefix = "link:";
@@ -316,4 +315,4 @@ std::vector<auth::User> Auth::AllUsersForRole(const std::string &rolename_orig)
   return ret;
 }
 
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/auth.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -18,8 +18,7 @@
 #include "kvstore/kvstore.hpp"
 #include "utils/settings.hpp"
 
-namespace auth {
-
+namespace memgraph::auth {
 /**
  * This class serves as the main Authentication/Authorization storage.
  * It provides functions for managing Users, Roles and Permissions.
@@ -163,4 +162,4 @@ class Auth final {
   kvstore::KVStore storage_;
   auth::Module module_;
 };
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/crypto.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -12,8 +12,7 @@
 
 #include "auth/exceptions.hpp"
 
-namespace auth {
-
+namespace memgraph::auth {
 const std::string EncryptPassword(const std::string &password) {
   char salt[BCRYPT_HASHSIZE];
   char hash[BCRYPT_HASHSIZE];
@@ -40,4 +39,4 @@ bool VerifyPassword(const std::string &password, const std::string &hash) {
   return ret == 0;
 }
 
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/crypto.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -10,12 +10,11 @@
 
 #include <string>
 
-namespace auth {
-
+namespace memgraph::auth {
 /// @throw AuthException if unable to encrypt the password.
 const std::string EncryptPassword(const std::string &password);
 
 /// @throw AuthException if unable to verify the password.
 bool VerifyPassword(const std::string &password, const std::string &hash);
 
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/exceptions.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,8 +13,7 @@
 
 #include "utils/exceptions.hpp"
 
-namespace auth {
-
+namespace memgraph::auth {
 /**
  * This exception class is thrown for all exceptions that can occur when dealing
  * with the Auth library.
@@ -23,4 +22,4 @@ class AuthException : public utils::BasicException {
  public:
   using utils::BasicException::BasicException;
 };
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/models.cpp

@@ -22,14 +22,13 @@
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 DEFINE_bool(auth_password_permit_null, true, "Set to false to disable null passwords.");
 
-constexpr std::string_view default_password_regex = ".+";
+inline constexpr std::string_view default_password_regex = ".+";
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 DEFINE_string(auth_password_strength_regex, default_password_regex.data(),
               "The regular expression that should be used to match the entire "
               "entered password to ensure its strength.");
 
-namespace auth {
-
+namespace memgraph::auth {
 namespace {
 // Constant list of all available permissions.
 const std::vector<Permission> kPermissionsAll = {
@@ -303,4 +302,4 @@ bool operator==(const User &first, const User &second) {
   return first.username_ == second.username_ && first.password_hash_ == second.password_hash_ &&
          first.permissions_ == second.permissions_ && first.role_ == second.role_;
 }
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/models.hpp

@@ -13,8 +13,7 @@
 
 #include <json/json.hpp>
 
-namespace auth {
-
+namespace memgraph::auth {
 // These permissions must have values that are applicable for usage in a
 // bitmask.
 // clang-format off
@@ -154,4 +153,4 @@ class User final {
 };
 
 bool operator==(const User &first, const User &second);
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/module.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -153,7 +153,7 @@ int Target(void *arg) {
   // process and something really bad could happen.
 
   // Get a pointer to the passed arguments.
-  auto *ta = reinterpret_cast<auth::TargetArguments *>(arg);
+  auto *ta = reinterpret_cast<memgraph::auth::TargetArguments *>(arg);
 
   // Redirect `stdin` to `/dev/null`.
   int fd = open("/dev/null", O_RDONLY | O_CLOEXEC);
@@ -312,8 +312,7 @@ nlohmann::json GetData(int fd, int timeout_millisec) {
 
 }  // namespace
 
-namespace auth {
-
+namespace memgraph::auth {
 Module::Module(const std::filesystem::path &module_executable_path) {
   if (!module_executable_path.empty()) {
     module_executable_path_ = std::filesystem::absolute(module_executable_path);
@@ -447,4 +446,4 @@ void Module::Shutdown() {
 
 Module::~Module() { Shutdown(); }
 
-}  // namespace auth
+}  // namespace memgraph::auth

src/auth/module.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// Copyright 2022 Memgraph Ltd.
 //
 // Licensed as a Memgraph Enterprise file under the Memgraph Enterprise
 // License (the "License"); by using this file, you agree to be bound by the terms of the License, and you may not use
@@ -16,8 +16,7 @@
 
 #include <json/json.hpp>
 
-namespace auth {
-
+namespace memgraph::auth {
 struct TargetArguments {
   std::filesystem::path module_executable_path;
   int pipe_to_module{-1};
@@ -70,4 +69,4 @@ class Module final {
   int pipe_from_module_[2] = {-1, -1};
 };
 
-}  // namespace auth
+}  // namespace memgraph::auth

src/communication/bolt/client.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -21,7 +21,7 @@
 #include "utils/exceptions.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /// This exception is thrown whenever an error occurs during query execution
 /// that isn't fatal (eg. mistyped query or some transient error occurred).
@@ -315,4 +315,4 @@ class Client final {
   ChunkedEncoderBuffer<communication::ClientOutputStream> encoder_buffer_{output_stream_};
   ClientEncoder<ChunkedEncoderBuffer<communication::ClientOutputStream>> encoder_{encoder_buffer_};
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/codes.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,10 +13,10 @@
 
 #include <cstdint>
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
-static constexpr uint8_t kPreamble[4] = {0x60, 0x60, 0xB0, 0x17};
-static constexpr uint8_t kProtocol[4] = {0x00, 0x00, 0x00, 0x01};
+inline constexpr uint8_t kPreamble[4] = {0x60, 0x60, 0xB0, 0x17};
+inline constexpr uint8_t kProtocol[4] = {0x00, 0x00, 0x00, 0x01};
 
 enum class Signature : uint8_t {
   Noop = 0x00,
@@ -95,9 +95,9 @@ enum class Marker : uint8_t {
   Struct16 = 0xDD,
 };
 
-static constexpr uint8_t MarkerString = 0, MarkerList = 1, MarkerMap = 2;
-static constexpr Marker MarkerTiny[3] = {Marker::TinyString, Marker::TinyList, Marker::TinyMap};
-static constexpr Marker Marker8[3] = {Marker::String8, Marker::List8, Marker::Map8};
-static constexpr Marker Marker16[3] = {Marker::String16, Marker::List16, Marker::Map16};
-static constexpr Marker Marker32[3] = {Marker::String32, Marker::List32, Marker::Map32};
-}  // namespace communication::bolt
+inline constexpr uint8_t MarkerString = 0, MarkerList = 1, MarkerMap = 2;
+inline constexpr Marker MarkerTiny[3] = {Marker::TinyString, Marker::TinyList, Marker::TinyMap};
+inline constexpr Marker Marker8[3] = {Marker::String8, Marker::List8, Marker::Map8};
+inline constexpr Marker Marker16[3] = {Marker::String16, Marker::List16, Marker::Map16};
+inline constexpr Marker Marker32[3] = {Marker::String32, Marker::List32, Marker::Map32};
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/constants.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,22 +14,22 @@
 #include <cstddef>
 #include <cstdint>
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Sizes related to the chunk defined in Bolt protocol.
  */
-static constexpr size_t kChunkHeaderSize = 2;
-static constexpr size_t kChunkMaxDataSize = 65535;
-static constexpr size_t kChunkWholeSize = kChunkHeaderSize + kChunkMaxDataSize;
+inline constexpr size_t kChunkHeaderSize = 2;
+inline constexpr size_t kChunkMaxDataSize = 65535;
+inline constexpr size_t kChunkWholeSize = kChunkHeaderSize + kChunkMaxDataSize;
 
 /**
  * Handshake size defined in the Bolt protocol.
  */
-static constexpr size_t kHandshakeSize = 20;
+inline constexpr size_t kHandshakeSize = 20;
 
-static constexpr uint16_t kSupportedVersions[] = {0x0100, 0x0400, 0x0401, 0x0403};
+inline constexpr uint16_t kSupportedVersions[] = {0x0100, 0x0400, 0x0401, 0x0403};
 
-static constexpr int kPullAll = -1;
-static constexpr int kPullLast = -1;
-}  // namespace communication::bolt
+inline constexpr int kPullAll = -1;
+inline constexpr int kPullLast = -1;
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/decoder/chunked_decoder_buffer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -20,7 +20,7 @@
 
 #include "communication/bolt/v1/constants.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * This class is used as the return value of the GetChunk function of the
@@ -136,4 +136,4 @@ class ChunkedDecoderBuffer {
   std::vector<uint8_t> data_;
   size_t pos_{0};
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/decoder/decoder.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -22,7 +22,7 @@
 #include "utils/logging.hpp"
 #include "utils/temporal.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Bolt Decoder.
@@ -591,4 +591,4 @@ class Decoder {
     return true;
   }
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/encoder/base_encoder.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -22,7 +22,7 @@ static_assert(std::is_same_v<std::uint8_t, char> || std::is_same_v<std::uint8_t,
               "communication::bolt::Encoder requires uint8_t to be "
               "implemented as char or unsigned char.");
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Bolt BaseEncoder. Has public interfaces for writing Bolt encoded data.
@@ -273,4 +273,4 @@ class BaseEncoder {
   }
 };
 
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/encoder/chunked_encoder_buffer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -18,7 +18,7 @@
 
 #include "communication/bolt/v1/constants.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * @brief ChunkedEncoderBuffer
@@ -123,4 +123,4 @@ class ChunkedEncoderBuffer {
   // Amount of data in chunk array.
   size_t have_{0};
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/encoder/client_encoder.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,7 +14,7 @@
 #include "communication/bolt/v1/codes.hpp"
 #include "communication/bolt/v1/encoder/base_encoder.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Bolt Client Encoder.
@@ -169,4 +169,4 @@ class ClientEncoder : private BaseEncoder<Buffer> {
     return buffer_.Flush();
   }
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/encoder/encoder.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,7 +14,7 @@
 #include "communication/bolt/v1/codes.hpp"
 #include "communication/bolt/v1/encoder/base_encoder.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Bolt Encoder.
@@ -158,4 +158,4 @@ class Encoder : private BaseEncoder<Buffer> {
     return buffer_.Flush();
   }
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/exceptions.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -17,7 +17,7 @@
 
 #include "utils/exceptions.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Used to indicate something is wrong with the client but the transaction is
@@ -83,4 +83,4 @@ class VerboseError : public utils::BasicException {
   std::string code_;
 };
 
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/session.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -27,7 +27,7 @@
 #include "utils/exceptions.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Bolt Session Exception
@@ -195,4 +195,4 @@ class Session {
   }
 };
 
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/state.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,7 +13,7 @@
 
 #include <cstdint>
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * This class represents states in execution of the Bolt protocol.
@@ -55,4 +55,4 @@ enum class State : uint8_t {
    */
   Close
 };
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/states/error.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -20,7 +20,7 @@
 #include "utils/likely.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /**
  * Error state run function
@@ -95,4 +95,4 @@ State StateErrorRun(TSession &session, State state) {
     return state;
   }
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/states/executing.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -26,7 +26,7 @@
 #include "utils/logging.hpp"
 #include "utils/message.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 template <typename TSession>
 State RunHandlerV1(Signature signature, TSession &session, State state, Marker marker) {
@@ -118,4 +118,4 @@ State StateExecutingRun(TSession &session, State state) {
       return State::Close;
   }
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/states/handlers.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -24,7 +24,7 @@
 #include "utils/logging.hpp"
 #include "utils/message.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 // TODO: Revise these error messages
 inline std::pair<std::string, std::string> ExceptionToErrorMessage(const std::exception &e) {
   if (const auto *verbose = dynamic_cast<const VerboseError *>(&e)) {
@@ -415,4 +415,4 @@ State HandleRoute(TSession &session) {
   }
   return State::Error;
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/states/handshake.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -22,7 +22,7 @@
 #include "utils/likely.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 inline bool CopyProtocolInformationIfSupported(uint16_t version, uint8_t *protocol) {
   const auto *supported_version = std::find(std::begin(kSupportedVersions), std::end(kSupportedVersions), version);
@@ -110,4 +110,4 @@ State StateHandshakeRun(TSession &session) {
 
   return State::Init;
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/states/init.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -21,7 +21,7 @@
 #include "utils/likely.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 namespace details {
 template <typename TSession>
@@ -212,4 +212,4 @@ State StateInitRun(TSession &session) {
   spdlog::trace("Unsupported bolt version:{}.{})!", session.version_.major, session.version_.minor);
   return State::Close;
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/value.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,7 +14,7 @@
 #include "utils/algorithm.hpp"
 #include "utils/string.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 #define DEF_GETTER_BY_VAL(type, value_type, field)   \
   value_type &Value::Value##type() {                 \
@@ -461,4 +461,4 @@ std::ostream &operator<<(std::ostream &os, const Value::Type type) {
       return os << "duration";
   }
 }
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/bolt/v1/value.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -20,7 +20,7 @@
 #include "utils/exceptions.hpp"
 #include "utils/temporal.hpp"
 
-namespace communication::bolt {
+namespace memgraph::communication::bolt {
 
 /** Forward declaration of Value class. */
 class Value;
@@ -282,4 +282,4 @@ std::ostream &operator<<(std::ostream &os, const UnboundedEdge &edge);
 std::ostream &operator<<(std::ostream &os, const Path &path);
 std::ostream &operator<<(std::ostream &os, const Value &value);
 std::ostream &operator<<(std::ostream &os, const Value::Type type);
-}  // namespace communication::bolt
+}  // namespace memgraph::communication::bolt

src/communication/buffer.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,7 +13,7 @@
 
 #include "utils/logging.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 Buffer::Buffer() : data_(kBufferInitialSize, 0), read_end_(this), write_end_(this) {}
 
@@ -77,4 +77,4 @@ void Buffer::Resize(size_t len) {
 
 void Buffer::Clear() { have_ = 0; }
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/buffer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -15,7 +15,7 @@
 
 #include "io/network/stream_buffer.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * @brief Buffer
@@ -171,4 +171,4 @@ class Buffer final {
   ReadEnd read_end_;
   WriteEnd write_end_;
 };
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/client.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,7 +14,7 @@
 #include "communication/helpers.hpp"
 #include "utils/logging.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 Client::Client(ClientContext *context) : context_(context) {}
 
@@ -239,4 +239,4 @@ bool ClientOutputStream::Write(const uint8_t *data, size_t len, bool have_more)
 }
 bool ClientOutputStream::Write(const std::string &str, bool have_more) { return client_.Write(str, have_more); }
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/client.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -21,14 +21,14 @@
 #include "io/network/endpoint.hpp"
 #include "io/network/socket.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This class implements a generic network Client.
  * It uses blocking sockets and provides an API that can be used to receive/send
  * data over the network connection.
  *
- * NOTE: If you use this client you **must** create `communication::SSLInit`
+ * NOTE: If you use this client you **must** create `memgraph::communication::SSLInit`
  * from the `main` function before using the client!
  */
 class Client final {
@@ -167,4 +167,4 @@ class ClientOutputStream final {
   Client &client_;
 };
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/context.cpp

@@ -10,10 +10,13 @@
 // licenses/APL.txt.
 
 #include "communication/context.hpp"
+#include <boost/asio/ssl/context.hpp>
+#include <boost/asio/ssl/verify_mode.hpp>
+#include <boost/system/detail/error_code.hpp>
 
 #include "utils/logging.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 ClientContext::ClientContext(bool use_ssl) : use_ssl_(use_ssl), ctx_(nullptr) {
   if (use_ssl_) {
@@ -74,42 +77,35 @@ SSL_CTX *ClientContext::context() { return ctx_; }
 bool ClientContext::use_ssl() { return use_ssl_; }
 
 ServerContext::ServerContext(const std::string &key_file, const std::string &cert_file, const std::string &ca_file,
-                             bool verify_peer)
-    :
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
-      ctx_(SSL_CTX_new(SSLv23_server_method()))
-#else
-      ctx_(SSL_CTX_new(TLS_server_method()))
-#endif
-{
-  // TODO (mferencevic): add support for encrypted private keys
-  // TODO (mferencevic): add certificate revocation list (CRL)
-  MG_ASSERT(SSL_CTX_use_certificate_file(ctx_, cert_file.c_str(), SSL_FILETYPE_PEM) == 1,
-            "Couldn't load server certificate from file: {}", cert_file);
-  MG_ASSERT(SSL_CTX_use_PrivateKey_file(ctx_, key_file.c_str(), SSL_FILETYPE_PEM) == 1,
-            "Couldn't load server private key from file: {}", key_file);
+                             bool verify_peer) {
+  namespace ssl = boost::asio::ssl;
+  ctx_.emplace(ssl::context::tls_server);
+  // NOLINTNEXTLINE(hicpp-signed-bitwise)
+  ctx_->set_options(ssl::context::default_workarounds | ssl::context::no_sslv2 | ssl::context::no_sslv3 |
+                    ssl::context::single_dh_use);
+  ctx_->set_default_verify_paths();
+  // TODO: add support for encrypted private keys
+  // TODO: add certificate revocation list (CRL)
+  boost::system::error_code ec;
+  ctx_->use_certificate_chain_file(cert_file, ec);
+  MG_ASSERT(!ec, "Couldn't load server certificate from file: {}", cert_file);
+  ctx_->use_private_key_file(key_file, ssl::context::pem, ec);
+  MG_ASSERT(!ec, "Couldn't load server private key from file: {}", key_file);
 
-  // Disable legacy SSL support. Other options can be seen here:
-  // https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html
-  SSL_CTX_set_options(ctx_, SSL_OP_NO_SSLv3);
+  ctx_->set_options(SSL_OP_NO_SSLv3, ec);
+  MG_ASSERT(!ec, "Setting options to SSL context failed!");
 
-  if (ca_file != "") {
+  if (!ca_file.empty()) {
     // Load the certificate authority file.
-    MG_ASSERT(SSL_CTX_load_verify_locations(ctx_, ca_file.c_str(), nullptr) == 1,
-              "Couldn't load certificate authority from file: {}", ca_file);
+    boost::system::error_code ec;
+    ctx_->load_verify_file(ca_file, ec);
+    MG_ASSERT(!ec, "Couldn't load certificate authority from file: {}", ca_file);
 
     if (verify_peer) {
-      // Add the CA to list of accepted CAs that is sent to the client.
-      STACK_OF(X509_NAME) *ca_names = SSL_load_client_CA_file(ca_file.c_str());
-      MG_ASSERT(ca_names != nullptr, "Couldn't load certificate authority from file: {}", ca_file);
-      // `ca_names` doesn' need to be free'd because we pass it to
-      // `SSL_CTX_set_client_CA_list`:
-      // https://mta.openssl.org/pipermail/openssl-users/2015-May/001363.html
-      SSL_CTX_set_client_CA_list(ctx_, ca_names);
-
       // Enable verification of the client certificate.
       // NOLINTNEXTLINE(hicpp-signed-bitwise)
-      SSL_CTX_set_verify(ctx_, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, nullptr);
+      ctx_->set_verify_mode(ssl::verify_peer | ssl::verify_fail_if_no_peer_cert, ec);
+      MG_ASSERT(!ec, "Setting SSL verification mode failed!");
     }
   }
 }
@@ -119,36 +115,27 @@ ServerContext::ServerContext(ServerContext &&other) noexcept { std::swap(ctx_, o
 ServerContext &ServerContext::operator=(ServerContext &&other) noexcept {
   if (this == &other) return *this;
 
-  // destroy my objects
-  if (ctx_) {
-    SSL_CTX_free(ctx_);
-  }
-
   // move other objects to self
-  ctx_ = other.ctx_;
+  ctx_ = std::move(other.ctx_);
 
   // reset other objects
-  other.ctx_ = nullptr;
+  other.ctx_.reset();
 
   return *this;
 }
 
-ServerContext::~ServerContext() {
-  if (ctx_) {
-    SSL_CTX_free(ctx_);
-  }
-}
+ServerContext::~ServerContext() {}
 
 SSL_CTX *ServerContext::context() {
   MG_ASSERT(ctx_);
-  return ctx_;
+  return ctx_->native_handle();
 }
-SSL_CTX *ServerContext::context_clone() {
+
+boost::asio::ssl::context &ServerContext::context_clone() {
   MG_ASSERT(ctx_);
-  SSL_CTX_up_ref(ctx_);
-  return ctx_;
+  return *ctx_;
 }
 
-bool ServerContext::use_ssl() const { return ctx_ != nullptr; }
+bool ServerContext::use_ssl() const { return ctx_.has_value(); }
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/context.hpp

@@ -11,11 +11,13 @@
 
 #pragma once
 
+#include <optional>
 #include <string>
 
 #include <openssl/ssl.h>
+#include <boost/asio/ssl/context.hpp>
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This class represents a context that should be used with network clients. One
@@ -94,12 +96,12 @@ class ServerContext final {
   ~ServerContext();
 
   SSL_CTX *context();
-  SSL_CTX *context_clone();
+  boost::asio::ssl::context &context_clone();
 
   bool use_ssl() const;
 
  private:
-  SSL_CTX *ctx_{nullptr};
+  std::optional<boost::asio::ssl::context> ctx_;
 };
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/exceptions.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,7 +13,7 @@
 
 #include "utils/exceptions.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This exception is thrown to indicate to the communication stack that the
@@ -22,4 +22,4 @@ namespace communication {
 class SessionClosedException : public utils::BasicException {
   using utils::BasicException::BasicException;
 };
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/helpers.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,7 +13,7 @@
 
 #include "communication/helpers.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 const std::string SslGetLastError() {
   char buff[2048];
@@ -21,4 +21,4 @@ const std::string SslGetLastError() {
   ERR_error_string_n(err, buff, sizeof(buff));
   return std::string(buff);
 }
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/helpers.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,11 +13,11 @@
 
 #include <string>
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This function reads and returns a string describing the last OpenSSL error.
  */
 const std::string SslGetLastError();
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/init.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -20,7 +20,7 @@
 #include "utils/signals.hpp"
 #include "utils/spin_lock.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 namespace {
 // OpenSSL before 1.1 did not have a out-of-the-box multithreading support
@@ -72,4 +72,4 @@ SSLInit::SSLInit() {
 }
 
 SSLInit::~SSLInit() { Cleanup(); }
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/init.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -11,7 +11,7 @@
 
 #pragma once
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * Create this object in each `main` file that uses the Communication stack. It
@@ -36,4 +36,4 @@ struct SSLInit {
   ~SSLInit();
 };
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/listener.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -28,7 +28,7 @@
 #include "utils/spin_lock.hpp"
 #include "utils/thread.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This class listens to events on an epoll object and processes them.
@@ -273,4 +273,4 @@ class Listener final {
   const std::string service_name_;
   const size_t workers_count_;
 };
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/result_stream_faker.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -29,7 +29,7 @@
  */
 class ResultStreamFaker {
  public:
-  explicit ResultStreamFaker(storage::Storage *store) : store_(store) {}
+  explicit ResultStreamFaker(memgraph::storage::Storage *store) : store_(store) {}
 
   ResultStreamFaker(const ResultStreamFaker &) = delete;
   ResultStreamFaker &operator=(const ResultStreamFaker &) = delete;
@@ -38,25 +38,25 @@ class ResultStreamFaker {
 
   void Header(const std::vector<std::string> &fields) { header_ = fields; }
 
-  void Result(const std::vector<communication::bolt::Value> &values) { results_.push_back(values); }
+  void Result(const std::vector<memgraph::communication::bolt::Value> &values) { results_.push_back(values); }
 
-  void Result(const std::vector<query::TypedValue> &values) {
-    std::vector<communication::bolt::Value> bvalues;
+  void Result(const std::vector<memgraph::query::TypedValue> &values) {
+    std::vector<memgraph::communication::bolt::Value> bvalues;
     bvalues.reserve(values.size());
     for (const auto &value : values) {
-      auto maybe_value = glue::ToBoltValue(value, *store_, storage::View::NEW);
+      auto maybe_value = memgraph::glue::ToBoltValue(value, *store_, memgraph::storage::View::NEW);
       MG_ASSERT(maybe_value.HasValue());
       bvalues.push_back(std::move(*maybe_value));
     }
     results_.push_back(std::move(bvalues));
   }
 
-  void Summary(const std::map<std::string, communication::bolt::Value> &summary) { summary_ = summary; }
+  void Summary(const std::map<std::string, memgraph::communication::bolt::Value> &summary) { summary_ = summary; }
 
-  void Summary(const std::map<std::string, query::TypedValue> &summary) {
-    std::map<std::string, communication::bolt::Value> bsummary;
+  void Summary(const std::map<std::string, memgraph::query::TypedValue> &summary) {
+    std::map<std::string, memgraph::communication::bolt::Value> bsummary;
     for (const auto &item : summary) {
-      auto maybe_value = glue::ToBoltValue(item.second, *store_, storage::View::NEW);
+      auto maybe_value = memgraph::glue::ToBoltValue(item.second, *store_, memgraph::storage::View::NEW);
       MG_ASSERT(maybe_value.HasValue());
       bsummary.insert({item.first, std::move(*maybe_value)});
     }
@@ -119,17 +119,17 @@ class ResultStreamFaker {
 
     // output the summary
     os << "Query summary: {";
-    utils::PrintIterable(os, results.GetSummary(), ", ",
-                         [&](auto &stream, const auto &kv) { stream << kv.first << ": " << kv.second; });
+    memgraph::utils::PrintIterable(os, results.GetSummary(), ", ",
+                                   [&](auto &stream, const auto &kv) { stream << kv.first << ": " << kv.second; });
     os << "}" << std::endl;
 
     return os;
   }
 
  private:
-  storage::Storage *store_;
+  memgraph::storage::Storage *store_;
   // the data that the record stream can accept
   std::vector<std::string> header_;
-  std::vector<std::vector<communication::bolt::Value>> results_;
-  std::map<std::string, communication::bolt::Value> summary_;
+  std::vector<std::vector<memgraph::communication::bolt::Value>> results_;
+  std::map<std::string, memgraph::communication::bolt::Value> summary_;
 };

src/communication/server.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -27,7 +27,7 @@
 #include "utils/message.hpp"
 #include "utils/thread.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * Communication server.
@@ -37,10 +37,10 @@ namespace communication {
  * that has `num_workers` threads. It is started automatically on constructor,
  * and stopped at destructor.
  *
- * Current Server achitecture:
+ * Current Server architecture:
  * incoming connection -> server -> listener -> session
  *
- * NOTE: If you use this server you **must** create `communication::SSLInit`
+ * NOTE: If you use this server you **must** create communication::SSLInit`
  * from the `main` function before using the server!
  *
  * @tparam TSession the server can handle different Sessions, each session
@@ -161,4 +161,4 @@ class Server final {
   const std::string service_name_;
 };
 
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/session.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -33,7 +33,7 @@
 #include "utils/on_scope_exit.hpp"
 #include "utils/spin_lock.hpp"
 
-namespace communication {
+namespace memgraph::communication {
 
 /**
  * This is used to provide input to user sessions. All sessions used with the
@@ -327,4 +327,4 @@ class Session final {
   SSL *ssl_{nullptr};
   BIO *bio_{nullptr};
 };  // namespace communication
-}  // namespace communication
+}  // namespace memgraph::communication

src/communication/v2/listener.hpp

@@ -0,0 +1,135 @@
+// 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 <atomic>
+#include <chrono>
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+#include <string_view>
+#include <thread>
+#include <vector>
+
+#include <spdlog/spdlog.h>
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/ip/tcp.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/beast/core.hpp>
+#include <boost/system/detail/error_code.hpp>
+
+#include "communication/context.hpp"
+#include "communication/v2/pool.hpp"
+#include "communication/v2/session.hpp"
+#include "utils/spin_lock.hpp"
+#include "utils/synchronized.hpp"
+
+namespace memgraph::communication::v2 {
+
+template <class TSession, class TSessionData>
+class Listener final : public std::enable_shared_from_this<Listener<TSession, TSessionData>> {
+  using tcp = boost::asio::ip::tcp;
+  using SessionHandler = Session<TSession, TSessionData>;
+  using std::enable_shared_from_this<Listener<TSession, TSessionData>>::shared_from_this;
+
+ public:
+  Listener(const Listener &) = delete;
+  Listener(Listener &&) = delete;
+  Listener &operator=(const Listener &) = delete;
+  Listener &operator=(Listener &&) = delete;
+  ~Listener() {}
+
+  template <typename... Args>
+  static std::shared_ptr<Listener> Create(Args &&...args) {
+    return std::shared_ptr<Listener>{new Listener(std::forward<Args>(args)...)};
+  }
+
+  void Start() { DoAccept(); }
+
+  bool IsRunning() const noexcept { return alive_.load(std::memory_order_relaxed); }
+
+ private:
+  Listener(boost::asio::io_context &io_context, TSessionData *data, ServerContext *server_context,
+           tcp::endpoint &endpoint, const std::string_view service_name, const uint64_t inactivity_timeout_sec)
+      : io_context_(io_context),
+        data_(data),
+        server_context_(server_context),
+        acceptor_(io_context_),
+        endpoint_{endpoint},
+        service_name_{service_name},
+        inactivity_timeout_{inactivity_timeout_sec} {
+    boost::system::error_code ec;
+    // Open the acceptor
+    acceptor_.open(endpoint.protocol(), ec);
+    if (ec) {
+      OnError(ec, "open");
+      return;
+    }
+
+    // Allow address reuse
+    acceptor_.set_option(boost::asio::socket_base::reuse_address(true), ec);
+    if (ec) {
+      OnError(ec, "set_option");
+      return;
+    }
+
+    // Bind to the server address
+    acceptor_.bind(endpoint, ec);
+    if (ec) {
+      spdlog::error(
+          utils::MessageWithLink("Cannot bind to socket on endpoint {}.", endpoint, "https://memgr.ph/socket"));
+      OnError(ec, "bind");
+      return;
+    }
+
+    acceptor_.listen(boost::asio::socket_base::max_listen_connections, ec);
+    if (ec) {
+      OnError(ec, "listen");
+      return;
+    }
+  }
+
+  void DoAccept() {
+    acceptor_.async_accept(io_context_,
+                           [shared_this = shared_from_this()](auto ec, boost::asio::ip::tcp::socket &&socket) {
+                             shared_this->OnAccept(ec, std::move(socket));
+                           });
+  }
+
+  void OnAccept(boost::system::error_code ec, tcp::socket socket) {
+    if (ec) {
+      return OnError(ec, "accept");
+    }
+
+    auto session = SessionHandler::Create(std::move(socket), data_, *server_context_, endpoint_, inactivity_timeout_,
+                                          service_name_);
+    session->Start();
+    DoAccept();
+  }
+
+  void OnError(const boost::system::error_code &ec, const std::string_view what) {
+    spdlog::error("Listener failed on {}: {}", what, ec.message());
+    alive_.store(false, std::memory_order_relaxed);
+  }
+
+  boost::asio::io_context &io_context_;
+  TSessionData *data_;
+  ServerContext *server_context_;
+  tcp::acceptor acceptor_;
+
+  tcp::endpoint endpoint_;
+  std::string_view service_name_;
+  std::chrono::seconds inactivity_timeout_;
+
+  std::atomic<bool> alive_;
+};
+}  // namespace memgraph::communication::v2

src/communication/v2/pool.hpp

@@ -0,0 +1,68 @@
+// 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 <cstddef>
+#include <thread>
+#include <vector>
+
+#include <boost/asio/executor_work_guard.hpp>
+#include <boost/asio/io_context.hpp>
+
+#include "utils/logging.hpp"
+
+namespace memgraph::communication::v2 {
+
+class IOContextThreadPool final {
+ private:
+  using IOContext = boost::asio::io_context;
+  using IOContextGuard = boost::asio::executor_work_guard<boost::asio::io_context::executor_type>;
+
+ public:
+  explicit IOContextThreadPool(size_t pool_size) : guard_{io_context_.get_executor()}, pool_size_{pool_size} {
+    MG_ASSERT(pool_size != 0, "Pool size must be greater then 0!");
+  }
+
+  IOContextThreadPool(const IOContextThreadPool &) = delete;
+  IOContextThreadPool &operator=(const IOContextThreadPool &) = delete;
+  IOContextThreadPool(IOContextThreadPool &&) = delete;
+  IOContextThreadPool &operator=(IOContextThreadPool &&) = delete;
+  ~IOContextThreadPool() = default;
+
+  void Run() {
+    background_threads_.reserve(pool_size_);
+    for (size_t i = 0; i < pool_size_; ++i) {
+      background_threads_.emplace_back([this]() { io_context_.run(); });
+    }
+    running_ = true;
+  }
+
+  void Shutdown() {
+    io_context_.stop();
+    running_ = false;
+  }
+
+  void AwaitShutdown() { background_threads_.clear(); }
+
+  bool IsRunning() const noexcept { return running_; }
+
+  IOContext &GetIOContext() noexcept { return io_context_; }
+
+ private:
+  /// The pool of io_context.
+  IOContext io_context_;
+  IOContextGuard guard_;
+  size_t pool_size_;
+  std::vector<std::jthread> background_threads_;
+  bool running_{false};
+};
+}  // namespace memgraph::communication::v2

src/communication/v2/server.hpp

@@ -0,0 +1,128 @@
+// 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 <algorithm>
+#include <cstdint>
+#include <iostream>
+#include <memory>
+#include <optional>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <fmt/format.h>
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/ip/address.hpp>
+#include <boost/asio/ip/tcp.hpp>
+
+#include "communication/context.hpp"
+#include "communication/init.hpp"
+#include "communication/v2/listener.hpp"
+#include "communication/v2/pool.hpp"
+#include "utils/logging.hpp"
+#include "utils/message.hpp"
+#include "utils/thread.hpp"
+
+namespace memgraph::communication::v2 {
+
+using Socket = boost::asio::ip::tcp::socket;
+using ServerEndpoint = boost::asio::ip::tcp::endpoint;
+/**
+ * Communication server.
+ *
+ * Listens for incoming connections on the server port and assigns them to the
+ * connection listener. The listener and session are implemented using asio
+ * async model. Currently the implemented model is thread per core model
+ * opposed to io_context per core. The reasoning for opting for the former model
+ * is the robustness to the multiple resource demanding queries that can be split
+ * across multiple threads, and then a single thread would not block io_context,
+ * unlike in the latter model where it is possible that thread that accepts
+ * request is being blocked by demanding query.
+ * All logic is contained within handlers that are being dispatched
+ * on a single strand per session. The only exception is write which is
+ * synchronous since the nature of the clients conenction is synchronous as
+ * well.
+ *
+ * Current Server architecture:
+ * incoming connection -> server -> listener -> session
+
+ *
+ * @tparam TSession the server can handle different Sessions, each session
+ *         represents a different protocol so the same network infrastructure
+ *         can be used for handling different protocols
+ * @tparam TSessionData the class with objects that will be forwarded to the
+ *         session
+ */
+template <typename TSession, typename TSessionData>
+class Server final {
+  using ServerHandler = Server<TSession, TSessionData>;
+
+ public:
+  /**
+   * Constructs and binds server to endpoint, operates on session data and
+   * invokes workers_count workers
+   */
+  Server(ServerEndpoint &endpoint, TSessionData *session_data, ServerContext *server_context,
+         const int inactivity_timeout_sec, const std::string_view service_name,
+         size_t workers_count = std::thread::hardware_concurrency())
+      : endpoint_{endpoint},
+        service_name_{service_name},
+        context_thread_pool_{workers_count},
+        listener_{Listener<TSession, TSessionData>::Create(context_thread_pool_.GetIOContext(), session_data,
+                                                           server_context, endpoint_, service_name_,
+                                                           inactivity_timeout_sec)} {}
+
+  ~Server() { MG_ASSERT(!IsRunning(), "Server wasn't shutdown properly"); }
+
+  Server(const Server &) = delete;
+  Server(Server &&) = delete;
+  Server &operator=(const Server &) = delete;
+  Server &operator=(Server &&) = delete;
+
+  const auto &Endpoint() const {
+    MG_ASSERT(IsRunning(), "You can't get the server endpoint when it's not running!");
+    return endpoint_;
+  }
+
+  bool Start() {
+    if (IsRunning()) {
+      spdlog::error("The server is already running");
+      return false;
+    }
+    listener_->Start();
+
+    spdlog::info("{} server is fully armed and operational", service_name_);
+    spdlog::info("{} listening on {}", service_name_, endpoint_.address());
+    context_thread_pool_.Run();
+
+    return true;
+  }
+
+  void Shutdown() {
+    context_thread_pool_.Shutdown();
+    spdlog::info("{} shutting down...", service_name_);
+  }
+
+  void AwaitShutdown() { context_thread_pool_.AwaitShutdown(); }
+
+  bool IsRunning() const noexcept { return context_thread_pool_.IsRunning() && listener_->IsRunning(); }
+
+ private:
+  ServerEndpoint endpoint_;
+  std::string service_name_;
+
+  IOContextThreadPool context_thread_pool_;
+  std::shared_ptr<Listener<TSession, TSessionData>> listener_;
+};
+
+}  // namespace memgraph::communication::v2

src/communication/v2/session.hpp

@@ -0,0 +1,513 @@
+// 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 <cstddef>
+#include <cstdint>
+#include <cstring>
+#include <deque>
+#include <functional>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <variant>
+
+#include <spdlog/spdlog.h>
+#include <boost/asio/bind_executor.hpp>
+#include <boost/asio/buffer.hpp>
+#include <boost/asio/ip/tcp.hpp>
+#include <boost/asio/read.hpp>
+#include <boost/asio/socket_base.hpp>
+#include <boost/asio/ssl/stream.hpp>
+#include <boost/asio/ssl/stream_base.hpp>
+#include <boost/asio/steady_timer.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/asio/system_context.hpp>
+#include <boost/asio/write.hpp>
+#include <boost/beast/core/tcp_stream.hpp>
+#include <boost/beast/http.hpp>
+#include <boost/beast/websocket.hpp>
+#include <boost/beast/websocket/rfc6455.hpp>
+#include <boost/system/detail/error_code.hpp>
+
+#include "communication/context.hpp"
+#include "communication/exceptions.hpp"
+#include "utils/logging.hpp"
+#include "utils/variant_helpers.hpp"
+
+namespace memgraph::communication::v2 {
+
+/**
+ * This is used to provide input to user Sessions. All Sessions used with the
+ * network stack should use this class as their input stream.
+ */
+using InputStream = communication::Buffer::ReadEnd;
+using tcp = boost::asio::ip::tcp;
+
+/**
+ * This is used to provide output from user Sessions. All Sessions used with the
+ * network stack should use this class for their output stream.
+ */
+class OutputStream final {
+ public:
+  explicit OutputStream(std::function<bool(const uint8_t *, size_t, bool)> write_function)
+      : write_function_(write_function) {}
+
+  OutputStream(const OutputStream &) = delete;
+  OutputStream(OutputStream &&) = delete;
+  OutputStream &operator=(const OutputStream &) = delete;
+  OutputStream &operator=(OutputStream &&) = delete;
+  ~OutputStream() = default;
+
+  bool Write(const uint8_t *data, size_t len, bool have_more = false) { return write_function_(data, len, have_more); }
+
+  bool Write(const std::string &str, bool have_more = false) {
+    return Write(reinterpret_cast<const uint8_t *>(str.data()), str.size(), have_more);
+  }
+
+ private:
+  std::function<bool(const uint8_t *, size_t, bool)> write_function_;
+};
+
+/**
+ * This class is used internally in the communication stack to handle all user
+ * Websocket Sessions. It handles socket ownership, inactivity timeout and protocol
+ * wrapping.
+ */
+template <typename TSession, typename TSessionData>
+class WebsocketSession : public std::enable_shared_from_this<WebsocketSession<TSession, TSessionData>> {
+  using WebSocket = boost::beast::websocket::stream<boost::beast::tcp_stream>;
+  using std::enable_shared_from_this<WebsocketSession<TSession, TSessionData>>::shared_from_this;
+
+ public:
+  template <typename... Args>
+  static std::shared_ptr<WebsocketSession> Create(Args &&...args) {
+    return std::shared_ptr<WebsocketSession>(new WebsocketSession(std::forward<Args>(args)...));
+  }
+
+  // Start the asynchronous accept operation
+  template <class Body, class Allocator>
+  void DoAccept(boost::beast::http::request<Body, boost::beast::http::basic_fields<Allocator>> req) {
+    execution_active_ = true;
+    // Set suggested timeout settings for the websocket
+    ws_.set_option(boost::beast::websocket::stream_base::timeout::suggested(boost::beast::role_type::server));
+    boost::asio::socket_base::keep_alive option(true);
+
+    // Set a decorator to change the Server of the handshake
+    ws_.set_option(boost::beast::websocket::stream_base::decorator([](boost::beast::websocket::response_type &res) {
+      res.set(boost::beast::http::field::server, std::string("Memgraph Bolt WS"));
+      res.set(boost::beast::http::field::sec_websocket_protocol, "binary");
+    }));
+    ws_.binary(true);
+
+    // Accept the websocket handshake
+    ws_.async_accept(
+        req, boost::asio::bind_executor(strand_, std::bind_front(&WebsocketSession::OnAccept, shared_from_this())));
+  }
+
+  bool Write(const uint8_t *data, size_t len) {
+    if (!IsConnected()) {
+      return false;
+    }
+
+    boost::system::error_code ec;
+    ws_.write(boost::asio::buffer(data, len), ec);
+    if (ec) {
+      OnError(ec, "write");
+      return false;
+    }
+    return true;
+  }
+
+ private:
+  // Take ownership of the socket
+  explicit WebsocketSession(tcp::socket &&socket, TSessionData *data, tcp::endpoint endpoint,
+                            std::string_view service_name)
+      : ws_(std::move(socket)),
+        strand_{boost::asio::make_strand(ws_.get_executor())},
+        output_stream_([this](const uint8_t *data, size_t len, bool /*have_more*/) { return Write(data, len); }),
+        session_(data, endpoint, input_buffer_.read_end(), &output_stream_),
+        endpoint_{endpoint},
+        remote_endpoint_{ws_.next_layer().socket().remote_endpoint()},
+        service_name_{service_name} {}
+
+  void OnAccept(boost::beast::error_code ec) {
+    if (ec) {
+      return OnError(ec, "accept");
+    }
+
+    // Read a message
+    DoRead();
+  }
+
+  void DoRead() {
+    if (!IsConnected()) {
+      return;
+    }
+    // Read a message into our buffer
+    auto buffer = input_buffer_.write_end()->Allocate();
+    ws_.async_read_some(
+        boost::asio::buffer(buffer.data, buffer.len),
+        boost::asio::bind_executor(strand_, std::bind_front(&WebsocketSession::OnRead, shared_from_this())));
+  }
+
+  void OnRead(const boost::system::error_code &ec, [[maybe_unused]] const size_t bytes_transferred) {
+    // This indicates that the WebsocketSession was closed
+    if (ec == boost::beast::websocket::error::closed) {
+      return;
+    }
+    if (ec) {
+      OnError(ec, "read");
+    }
+    input_buffer_.write_end()->Written(bytes_transferred);
+
+    try {
+      session_.Execute();
+      DoRead();
+    } catch (const SessionClosedException &e) {
+      spdlog::info("{} client {}:{} closed the connection.", service_name_, remote_endpoint_.address(),
+                   remote_endpoint_.port());
+      DoClose();
+    } catch (const std::exception &e) {
+      spdlog::error(
+          "Exception was thrown while processing event in {} session "
+          "associated with {}:{}",
+          service_name_, remote_endpoint_.address(), remote_endpoint_.port());
+      spdlog::debug("Exception message: {}", e.what());
+      DoClose();
+    }
+  }
+
+  void OnError(const boost::system::error_code &ec, const std::string_view action) {
+    spdlog::error("Websocket Bolt session error: {} on {}", ec.message(), action);
+
+    DoClose();
+  }
+
+  void DoClose() {
+    ws_.async_close(
+        boost::beast::websocket::close_code::normal,
+        boost::asio::bind_executor(
+            strand_, [shared_this = shared_from_this()](boost::beast::error_code ec) { shared_this->OnClose(ec); }));
+  }
+
+  void OnClose(const boost::system::error_code &ec) {
+    if (!IsConnected()) {
+      return;
+    }
+    if (ec) {
+      return OnError(ec, "close");
+    }
+  }
+
+  bool IsConnected() const { return ws_.is_open() && execution_active_; }
+
+  WebSocket ws_;
+  boost::asio::strand<WebSocket::executor_type> strand_;
+
+  communication::Buffer input_buffer_;
+  OutputStream output_stream_;
+  TSession session_;
+  tcp::endpoint endpoint_;
+  tcp::endpoint remote_endpoint_;
+  std::string_view service_name_;
+  bool execution_active_{false};
+};
+
+/**
+ * This class is used internally in the communication stack to handle all user
+ * Sessions. It handles socket ownership, inactivity timeout and protocol
+ * wrapping.
+ */
+template <typename TSession, typename TSessionData>
+class Session final : public std::enable_shared_from_this<Session<TSession, TSessionData>> {
+  using TCPSocket = tcp::socket;
+  using SSLSocket = boost::asio::ssl::stream<TCPSocket>;
+  using std::enable_shared_from_this<Session<TSession, TSessionData>>::shared_from_this;
+
+ public:
+  template <typename... Args>
+  static std::shared_ptr<Session> Create(Args &&...args) {
+    return std::shared_ptr<Session>(new Session(std::forward<Args>(args)...));
+  }
+
+  Session(const Session &) = delete;
+  Session(Session &&) = delete;
+  Session &operator=(const Session &) = delete;
+  Session &operator=(Session &&) = delete;
+  ~Session() {
+    if (IsConnected()) {
+      spdlog::error("Session: Destructor called while execution is active");
+    }
+  }
+
+  bool Start() {
+    if (execution_active_) {
+      return false;
+    }
+    execution_active_ = true;
+    timeout_timer_.async_wait(boost::asio::bind_executor(strand_, std::bind(&Session::OnTimeout, shared_from_this())));
+
+    if (std::holds_alternative<SSLSocket>(socket_)) {
+      boost::asio::dispatch(strand_, [shared_this = shared_from_this()] { shared_this->DoHandshake(); });
+    } else {
+      boost::asio::dispatch(strand_, [shared_this = shared_from_this()] { shared_this->DoRead(); });
+    }
+    return true;
+  }
+
+  bool Write(const uint8_t *data, size_t len, bool have_more = false) {
+    if (!IsConnected()) {
+      return false;
+    }
+    return std::visit(
+        utils::Overloaded{[shared_this = shared_from_this(), data, len, have_more](TCPSocket &socket) mutable {
+                            boost::system::error_code ec;
+                            while (len > 0) {
+                              const auto sent = socket.send(boost::asio::buffer(data, len),
+                                                            MSG_NOSIGNAL | (have_more ? MSG_MORE : 0), ec);
+                              if (ec) {
+                                shared_this->OnError(ec);
+                                return false;
+                              }
+                              data += sent;
+                              len -= sent;
+                            }
+                            return true;
+                          },
+                          [shared_this = shared_from_this(), data, len](SSLSocket &socket) mutable {
+                            boost::system::error_code ec;
+                            while (len > 0) {
+                              const auto sent = socket.write_some(boost::asio::buffer(data, len), ec);
+                              if (ec) {
+                                shared_this->OnError(ec);
+                                return false;
+                              }
+                              data += sent;
+                              len -= sent;
+                            }
+                            return true;
+                          }},
+        socket_);
+  }
+
+  bool IsConnected() const {
+    return std::visit([this](const auto &socket) { return execution_active_ && socket.lowest_layer().is_open(); },
+                      socket_);
+  }
+
+ private:
+  explicit Session(tcp::socket &&socket, TSessionData *data, ServerContext &server_context, tcp::endpoint endpoint,
+                   const std::chrono::seconds inactivity_timeout_sec, std::string_view service_name)
+      : socket_(CreateSocket(std::move(socket), server_context)),
+        strand_{boost::asio::make_strand(GetExecutor())},
+        output_stream_([this](const uint8_t *data, size_t len, bool have_more) { return Write(data, len, have_more); }),
+        session_(data, endpoint, input_buffer_.read_end(), &output_stream_),
+        data_{data},
+        endpoint_{endpoint},
+        remote_endpoint_{GetRemoteEndpoint()},
+        service_name_{service_name},
+        timeout_seconds_(inactivity_timeout_sec),
+        timeout_timer_(GetExecutor()) {
+    ExecuteForSocket([](auto &&socket) {
+      socket.lowest_layer().set_option(tcp::no_delay(true));                         // enable PSH
+      socket.lowest_layer().set_option(boost::asio::socket_base::keep_alive(true));  // enable SO_KEEPALIVE
+      socket.lowest_layer().non_blocking(false);
+    });
+    timeout_timer_.expires_at(boost::asio::steady_timer::time_point::max());
+    spdlog::info("Accepted a connection from {}:", service_name_, remote_endpoint_.address(), remote_endpoint_.port());
+  }
+
+  void DoRead() {
+    if (!IsConnected()) {
+      return;
+    }
+    timeout_timer_.expires_after(timeout_seconds_);
+    ExecuteForSocket([this](auto &&socket) {
+      auto buffer = input_buffer_.write_end()->Allocate();
+      socket.async_read_some(
+          boost::asio::buffer(buffer.data, buffer.len),
+          boost::asio::bind_executor(strand_, std::bind_front(&Session::OnRead, shared_from_this())));
+    });
+  }
+
+  bool IsWebsocketUpgrade(boost::beast::http::request_parser<boost::beast::http::string_body> &parser) {
+    boost::system::error_code error_code_parsing;
+    parser.put(boost::asio::buffer(input_buffer_.read_end()->data(), input_buffer_.read_end()->size()),
+               error_code_parsing);
+    if (error_code_parsing) {
+      return false;
+    }
+
+    return boost::beast::websocket::is_upgrade(parser.get());
+  }
+
+  void OnRead(const boost::system::error_code &ec, const size_t bytes_transferred) {
+    if (ec) {
+      return OnError(ec);
+    }
+    input_buffer_.write_end()->Written(bytes_transferred);
+
+    // Can be a websocket connection only on the first read, since it is not
+    // expected from clients to upgrade from tcp to websocket
+    if (!has_received_msg_) {
+      has_received_msg_ = true;
+      boost::beast::http::request_parser<boost::beast::http::string_body> parser;
+
+      if (IsWebsocketUpgrade(parser)) {
+        spdlog::info("Switching {} to websocket connection", remote_endpoint_);
+        if (std::holds_alternative<TCPSocket>(socket_)) {
+          auto sock = std::get<TCPSocket>(std::move(socket_));
+          WebsocketSession<TSession, TSessionData>::Create(std::move(sock), data_, endpoint_, service_name_)
+              ->DoAccept(parser.release());
+          execution_active_ = false;
+          return;
+        }
+        spdlog::error("Error while upgrading connection to websocket");
+        DoShutdown();
+      }
+    }
+
+    try {
+      session_.Execute();
+      DoRead();
+    } catch (const SessionClosedException &e) {
+      spdlog::info("{} client {}:{} closed the connection.", service_name_, remote_endpoint_.address(),
+                   remote_endpoint_.port());
+      DoShutdown();
+    } catch (const std::exception &e) {
+      spdlog::error(
+          "Exception was thrown while processing event in {} session "
+          "associated with {}:{}",
+          service_name_, remote_endpoint_.address(), remote_endpoint_.port());
+      spdlog::debug("Exception message: {}", e.what());
+      DoShutdown();
+    }
+  }
+
+  void OnError(const boost::system::error_code &ec) {
+    if (ec == boost::asio::error::operation_aborted) {
+      return;
+    }
+    execution_active_ = false;
+
+    if (ec == boost::asio::error::eof) {
+      spdlog::info("Session closed by peer");
+    } else {
+      spdlog::error("Session error: {}", ec.message());
+    }
+
+    DoShutdown();
+  }
+
+  void DoShutdown() {
+    if (!IsConnected()) {
+      return;
+    }
+    execution_active_ = false;
+    timeout_timer_.cancel();
+    ExecuteForSocket([](auto &socket) {
+      boost::system::error_code ec;
+      auto &lowest_layer = socket.lowest_layer();
+      lowest_layer.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
+      if (ec) {
+        spdlog::error("Session shutdown failed: {}", ec.what());
+      }
+      lowest_layer.close();
+    });
+  }
+
+  void DoHandshake() {
+    if (!IsConnected()) {
+      return;
+    }
+    if (auto *socket = std::get_if<SSLSocket>(&socket_); socket) {
+      socket->async_handshake(
+          boost::asio::ssl::stream_base::server,
+          boost::asio::bind_executor(strand_, std::bind_front(&Session::OnHandshake, shared_from_this())));
+    }
+  }
+
+  void OnHandshake(const boost::system::error_code &ec) {
+    if (ec) {
+      return OnError(ec);
+    }
+    DoRead();
+  }
+
+  void OnClose(const boost::system::error_code &ec) {
+    if (ec) {
+      return OnError(ec);
+    }
+  }
+
+  void OnTimeout() {
+    if (!IsConnected()) {
+      return;
+    }
+    // Check whether the deadline has passed. We compare the deadline against
+    // the current time since a new asynchronous operation may have moved the
+    // deadline before this actor had a chance to run.
+    if (timeout_timer_.expiry() <= boost::asio::steady_timer::clock_type::now()) {
+      // The deadline has passed. Stop the session. The other actors will
+      // terminate as soon as possible.
+      spdlog::info("Shutting down session after {} of inactivity", timeout_seconds_);
+      DoShutdown();
+    } else {
+      // Put the actor back to sleep.
+      timeout_timer_.async_wait(
+          boost::asio::bind_executor(strand_, std::bind(&Session::OnTimeout, shared_from_this())));
+    }
+  }
+
+  std::variant<TCPSocket, SSLSocket> CreateSocket(tcp::socket &&socket, ServerContext &context) {
+    if (context.use_ssl()) {
+      ssl_context_.emplace(context.context_clone());
+      return SSLSocket{std::move(socket), *ssl_context_};
+    }
+
+    return TCPSocket{std::move(socket)};
+  }
+
+  auto GetExecutor() {
+    return std::visit(utils::Overloaded{[](auto &&socket) { return socket.get_executor(); }}, socket_);
+  }
+
+  auto GetRemoteEndpoint() const {
+    return std::visit(utils::Overloaded{[](const auto &socket) { return socket.lowest_layer().remote_endpoint(); }},
+                      socket_);
+  }
+
+  template <typename F>
+  decltype(auto) ExecuteForSocket(F &&fun) {
+    return std::visit(utils::Overloaded{std::forward<F>(fun)}, socket_);
+  }
+
+  std::variant<TCPSocket, SSLSocket> socket_;
+  std::optional<std::reference_wrapper<boost::asio::ssl::context>> ssl_context_;
+  boost::asio::strand<tcp::socket::executor_type> strand_;
+
+  communication::Buffer input_buffer_;
+  OutputStream output_stream_;
+  TSession session_;
+  TSessionData *data_;
+  tcp::endpoint endpoint_;
+  tcp::endpoint remote_endpoint_;
+  std::string_view service_name_;
+  std::chrono::seconds timeout_seconds_;
+  boost::asio::steady_timer timeout_timer_;
+  bool execution_active_{false};
+  bool has_received_msg_{false};
+};
+}  // namespace memgraph::communication::v2

src/communication/websocket/auth.cpp

@@ -13,7 +13,7 @@
 
 #include <string>
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 
 bool SafeAuth::Authenticate(const std::string &username, const std::string &password) const {
   return auth_->Lock()->Authenticate(username, password).has_value();
@@ -27,4 +27,4 @@ bool SafeAuth::HasUserPermission(const std::string &username, const auth::Permis
 }
 
 bool SafeAuth::HasAnyUsers() const { return auth_->ReadLock()->HasUsers(); }
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/auth.hpp

@@ -17,7 +17,7 @@
 #include "utils/spin_lock.hpp"
 #include "utils/synchronized.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 
 class AuthenticationInterface {
  public:
@@ -41,4 +41,4 @@ class SafeAuth : public AuthenticationInterface {
  private:
   utils::Synchronized<auth::Auth, utils::WritePrioritizedRWLock> *auth_;
 };
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/listener.cpp

@@ -11,7 +11,7 @@
 
 #include "communication/websocket/listener.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 namespace {
 void LogError(boost::beast::error_code ec, const std::string_view what) {
   spdlog::warn("Websocket listener failed on {}: {}", what, ec.message());
@@ -87,4 +87,4 @@ void Listener::OnAccept(boost::beast::error_code ec, tcp::socket socket) {
 
   DoAccept();
 }
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/listener.hpp

@@ -11,8 +11,6 @@
 
 #pragma once
 
-#define BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT
-
 #include <list>
 #include <memory>
 
@@ -27,7 +25,7 @@
 #include "utils/spin_lock.hpp"
 #include "utils/synchronized.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 class Listener : public std::enable_shared_from_this<Listener> {
   using tcp = boost::asio::ip::tcp;
 
@@ -54,4 +52,4 @@ class Listener : public std::enable_shared_from_this<Listener> {
   utils::Synchronized<std::list<std::shared_ptr<Session>>, utils::SpinLock> sessions_;
   AuthenticationInterface &auth_;
 };
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/server.cpp

@@ -13,7 +13,7 @@
 
 #include <spdlog/pattern_formatter.h>
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 
 Server::~Server() {
   MG_ASSERT(!background_thread_ || (ioc_.stopped() && !background_thread_->joinable()),
@@ -44,10 +44,10 @@ class QuoteEscapeFormatter : public spdlog::custom_flag_formatter {
   void format(const spdlog::details::log_msg &msg, const std::tm & /*time*/, spdlog::memory_buf_t &dest) override {
     for (const auto c : msg.payload) {
       if (c == '"') {
-        constexpr std::string_view escaped_quote = "\\\"";
+        static constexpr std::string_view escaped_quote = "\\\"";
         dest.append(escaped_quote.data(), escaped_quote.data() + escaped_quote.size());
       } else if (c == '\n') {
-        constexpr std::string_view escaped_newline = "\\n";
+        static constexpr std::string_view escaped_newline = "\\n";
         dest.append(escaped_newline.data(), escaped_newline.data() + escaped_newline.size());
       } else {
         dest.push_back(c);
@@ -81,4 +81,4 @@ std::shared_ptr<Server::LoggingSink> Server::GetLoggingSink() {
   return sink;
 }
 
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/server.hpp

@@ -11,8 +11,6 @@
 
 #pragma once
 
-#define BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT
-
 #include <thread>
 
 #include <spdlog/sinks/base_sink.h>
@@ -22,7 +20,7 @@
 #include "communication/websocket/listener.hpp"
 #include "io/network/endpoint.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 
 class Server final {
   using tcp = boost::asio::ip::tcp;
@@ -65,4 +63,4 @@ class Server final {
   std::shared_ptr<Listener> listener_;
   std::optional<std::thread> background_thread_;
 };
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/session.cpp

@@ -26,7 +26,7 @@
 #include "communication/websocket/auth.hpp"
 #include "utils/logging.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 namespace {
 void LogError(const boost::beast::error_code ec, const std::string_view what) {
   spdlog::warn("Websocket session failed on {}: {}", what, ec.message());
@@ -232,4 +232,4 @@ void Session::DoShutdown() {
              ws_);
 }
 
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/communication/websocket/session.hpp

@@ -11,8 +11,6 @@
 
 #pragma once
 
-#define BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT
-
 #include <deque>
 #include <memory>
 #include <optional>
@@ -32,7 +30,7 @@
 #include "utils/synchronized.hpp"
 #include "utils/variant_helpers.hpp"
 
-namespace communication::websocket {
+namespace memgraph::communication::websocket {
 class Session : public std::enable_shared_from_this<Session> {
   using tcp = boost::asio::ip::tcp;
 
@@ -78,7 +76,7 @@ class Session : public std::enable_shared_from_this<Session> {
 
   std::variant<PlainWebSocket, SSLWebSocket> CreateWebSocket(tcp::socket &&socket, ServerContext &context);
 
-  std::optional<boost::asio::ssl::context> ssl_context_;
+  std::optional<std::reference_wrapper<boost::asio::ssl::context>> ssl_context_;
   std::variant<PlainWebSocket, SSLWebSocket> ws_;
   boost::beast::flat_buffer buffer_;
   std::deque<std::shared_ptr<std::string>> messages_;
@@ -88,4 +86,4 @@ class Session : public std::enable_shared_from_this<Session> {
   bool close_{false};
   AuthenticationInterface &auth_;
 };
-}  // namespace communication::websocket
+}  // namespace memgraph::communication::websocket

src/data_structures/ring_buffer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -49,7 +49,7 @@ class RingBuffer {
   void emplace(TArgs &&...args) {
     while (true) {
       {
-        std::lock_guard<utils::SpinLock> guard(lock_);
+        std::lock_guard<memgraph::utils::SpinLock> guard(lock_);
         if (size_ < capacity_) {
           buffer_[write_pos_++] = TElement(std::forward<TArgs>(args)...);
           write_pos_ %= capacity_;
@@ -70,7 +70,7 @@ class RingBuffer {
    * empty, nullopt is returned.
    */
   std::optional<TElement> pop() {
-    std::lock_guard<utils::SpinLock> guard(lock_);
+    std::lock_guard<memgraph::utils::SpinLock> guard(lock_);
     if (size_ == 0) return std::nullopt;
     size_--;
     std::optional<TElement> result(std::move(buffer_[read_pos_++]));
@@ -80,7 +80,7 @@ class RingBuffer {
 
   /** Removes all elements from the buffer. */
   void clear() {
-    std::lock_guard<utils::SpinLock> guard(lock_);
+    std::lock_guard<memgraph::utils::SpinLock> guard(lock_);
     read_pos_ = 0;
     write_pos_ = 0;
     size_ = 0;
@@ -89,7 +89,7 @@ class RingBuffer {
  private:
   int capacity_;
   std::unique_ptr<TElement[]> buffer_;
-  utils::SpinLock lock_;
+  memgraph::utils::SpinLock lock_;
   int read_pos_{0};
   int write_pos_{0};
   int size_{0};

src/glue/auth.cpp

@@ -11,7 +11,7 @@
 
 #include "glue/auth.hpp"
 
-namespace glue {
+namespace memgraph::glue {
 
 auth::Permission PrivilegeToPermission(query::AuthQuery::Privilege privilege) {
   switch (privilege) {
@@ -59,4 +59,4 @@ auth::Permission PrivilegeToPermission(query::AuthQuery::Privilege privilege) {
       return auth::Permission::WEBSOCKET;
   }
 }
-}  // namespace glue
+}  // namespace memgraph::glue

src/glue/auth.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -12,7 +12,7 @@
 #include "auth/models.hpp"
 #include "query/frontend/ast/ast.hpp"
 
-namespace glue {
+namespace memgraph::glue {
 
 /**
  * This function converts query::AuthQuery::Privilege to its corresponding
@@ -20,4 +20,4 @@ namespace glue {
  */
 auth::Permission PrivilegeToPermission(query::AuthQuery::Privilege privilege);
 
-}  // namespace glue
+}  // namespace memgraph::glue

src/glue/communication.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -20,14 +20,14 @@
 #include "storage/v2/vertex_accessor.hpp"
 #include "utils/temporal.hpp"
 
-using communication::bolt::Value;
+using memgraph::communication::bolt::Value;
 
-namespace glue {
+namespace memgraph::glue {
 
 query::TypedValue ToTypedValue(const Value &value) {
   switch (value.type()) {
     case Value::Type::Null:
-      return query::TypedValue();
+      return {};
     case Value::Type::Bool:
       return query::TypedValue(value.ValueBool());
     case Value::Type::Int:
@@ -271,4 +271,4 @@ Value ToBoltValue(const storage::PropertyValue &value) {
   }
 }
 
-}  // namespace glue
+}  // namespace memgraph::glue

src/glue/communication.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -18,13 +18,13 @@
 #include "storage/v2/result.hpp"
 #include "storage/v2/view.hpp"
 
-namespace storage {
+namespace memgraph::storage {
 class EdgeAccessor;
 class Storage;
 class VertexAccessor;
-}  // namespace storage
+}  // namespace memgraph::storage
 
-namespace glue {
+namespace memgraph::glue {
 
 /// @param storage::VertexAccessor for converting to
 ///        communication::bolt::Vertex.
@@ -65,4 +65,4 @@ communication::bolt::Value ToBoltValue(const storage::PropertyValue &value);
 
 storage::PropertyValue ToPropertyValue(const communication::bolt::Value &value);
 
-}  // namespace glue
+}  // namespace memgraph::glue

src/integrations/constants.hpp

@@ -14,10 +14,12 @@
 #include <chrono>
 #include <string>
 
-namespace integrations {
-constexpr int64_t kDefaultCheckBatchLimit{1};
-constexpr std::chrono::milliseconds kDefaultCheckTimeout{30000};
-constexpr std::chrono::milliseconds kMinimumInterval{1};
-constexpr int64_t kMinimumSize{1};
+namespace memgraph::integrations {
+
+inline constexpr int64_t kDefaultCheckBatchLimit{1};
+inline constexpr std::chrono::milliseconds kDefaultCheckTimeout{30000};
+inline constexpr std::chrono::milliseconds kMinimumInterval{1};
+inline constexpr int64_t kMinimumSize{1};
 const std::string kReducted{"<REDUCTED>"};
-}  // namespace integrations
+
+}  // namespace memgraph::integrations

src/integrations/kafka/consumer.cpp

@@ -27,7 +27,7 @@
 #include "utils/on_scope_exit.hpp"
 #include "utils/thread.hpp"
 
-namespace integrations::kafka {
+namespace memgraph::integrations::kafka {
 
 namespace {
 utils::BasicResult<std::string, std::vector<Message>> GetBatch(RdKafka::KafkaConsumer &consumer,
@@ -185,8 +185,10 @@ Consumer::Consumer(ConsumerInfo info, ConsumerFunction consumer_function)
                  std::inserter(topic_names_from_metadata, topic_names_from_metadata.begin()),
                  [](const auto topic_metadata) { return topic_metadata->topic(); });
 
-  constexpr size_t max_topic_name_length = 249;
-  constexpr auto is_valid_topic_name = [](const auto c) { return std::isalnum(c) || c == '.' || c == '_' || c == '-'; };
+  static constexpr size_t max_topic_name_length = 249;
+  static constexpr auto is_valid_topic_name = [](const auto c) {
+    return std::isalnum(c) || c == '.' || c == '_' || c == '-';
+  };
 
   for (const auto &topic_name : info_.topics) {
     if (topic_name.size() > max_topic_name_length ||
@@ -351,7 +353,7 @@ void Consumer::StartConsuming() {
   }
 
   thread_ = std::thread([this] {
-    constexpr auto kMaxThreadNameSize = utils::GetMaxThreadNameSize();
+    static constexpr auto kMaxThreadNameSize = utils::GetMaxThreadNameSize();
     const auto full_thread_name = "Cons#" + info_.consumer_name;
 
     utils::ThreadSetName(full_thread_name.substr(0, kMaxThreadNameSize));
@@ -448,4 +450,4 @@ void Consumer::ConsumerRebalanceCb::rebalance_cb(RdKafka::KafkaConsumer *consume
   }
 }
 void Consumer::ConsumerRebalanceCb::set_offset(int64_t offset) { offset_ = offset; }
-}  // namespace integrations::kafka
+}  // namespace memgraph::integrations::kafka

src/integrations/kafka/consumer.hpp

@@ -26,7 +26,7 @@
 #include <librdkafka/rdkafkacpp.h>
 #include "utils/result.hpp"
 
-namespace integrations::kafka {
+namespace memgraph::integrations::kafka {
 
 /// Wraps the message returned from librdkafka.
 ///
@@ -183,4 +183,4 @@ class Consumer final : public RdKafka::EventCb {
   std::thread thread_;
   ConsumerRebalanceCb cb_;
 };
-}  // namespace integrations::kafka
+}  // namespace memgraph::integrations::kafka

src/integrations/kafka/exceptions.hpp

@@ -15,7 +15,7 @@
 
 #include "utils/exceptions.hpp"
 
-namespace integrations::kafka {
+namespace memgraph::integrations::kafka {
 class KafkaStreamException : public utils::BasicException {
   using utils::BasicException::BasicException;
 };
@@ -64,4 +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) {}
 };
-}  // namespace integrations::kafka
+}  // namespace memgraph::integrations::kafka

src/integrations/pulsar/consumer.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -26,7 +26,7 @@
 #include "utils/result.hpp"
 #include "utils/thread.hpp"
 
-namespace integrations::pulsar {
+namespace memgraph::integrations::pulsar {
 
 namespace {
 
@@ -231,7 +231,7 @@ void Consumer::StartConsuming() {
   is_running_.store(true);
 
   thread_ = std::thread([this] {
-    constexpr auto kMaxThreadNameSize = utils::GetMaxThreadNameSize();
+    static constexpr auto kMaxThreadNameSize = utils::GetMaxThreadNameSize();
     const auto full_thread_name = "Cons#" + info_.consumer_name;
 
     utils::ThreadSetName(full_thread_name.substr(0, kMaxThreadNameSize));
@@ -284,4 +284,4 @@ void Consumer::StopConsuming() {
   }
 }
 
-}  // namespace integrations::pulsar
+}  // namespace memgraph::integrations::pulsar

src/integrations/pulsar/consumer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -17,7 +17,7 @@
 
 #include <pulsar/Client.h>
 
-namespace integrations::pulsar {
+namespace memgraph::integrations::pulsar {
 
 namespace pulsar_client = ::pulsar;
 
@@ -79,4 +79,4 @@ class Consumer final {
   pulsar_client::MessageId last_message_id_{pulsar_client::MessageId::earliest()};
   std::thread thread_;
 };
-}  // namespace integrations::pulsar
+}  // namespace memgraph::integrations::pulsar

src/integrations/pulsar/exceptions.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -15,7 +15,7 @@
 
 #include "utils/exceptions.hpp"
 
-namespace integrations::pulsar {
+namespace memgraph::integrations::pulsar {
 class PulsarStreamException : public utils::BasicException {
   using utils::BasicException::BasicException;
 };
@@ -55,4 +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) {}
 };
-}  // namespace integrations::pulsar
+}  // namespace memgraph::integrations::pulsar

src/io/network/addrinfo.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -9,34 +9,52 @@
 // by the Apache License, Version 2.0, included in the file
 // licenses/APL.txt.
 
-#include <netdb.h>
-#include <cstring>
-
 #include "io/network/addrinfo.hpp"
 
+#include <concepts>
+#include <iterator>
+
 #include "io/network/network_error.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
-AddrInfo::AddrInfo(struct addrinfo *info) : info(info) {}
+static_assert(std::forward_iterator<AddrInfo::Iterator> && std::equality_comparable<AddrInfo::Iterator>);
 
-AddrInfo::~AddrInfo() { freeaddrinfo(info); }
-
-AddrInfo AddrInfo::Get(const char *addr, const char *port) {
-  struct addrinfo hints;
-  memset(&hints, 0, sizeof(struct addrinfo));
-
-  hints.ai_family = AF_UNSPEC;      // IPv4 and IPv6
-  hints.ai_socktype = SOCK_STREAM;  // TCP socket
-  hints.ai_flags = AI_PASSIVE;
-
-  struct addrinfo *result;
-  auto status = getaddrinfo(addr, port, &hints, &result);
+AddrInfo::AddrInfo(const Endpoint &endpoint) : AddrInfo(endpoint.address, endpoint.port) {}
 
+AddrInfo::AddrInfo(const std::string &addr, uint16_t port) : info_{nullptr, nullptr} {
+  addrinfo hints{
+      .ai_flags = AI_PASSIVE,
+      .ai_family = AF_UNSPEC,     // IPv4 and IPv6
+      .ai_socktype = SOCK_STREAM  // TCP socket
+  };
+  addrinfo *info = nullptr;
+  auto status = getaddrinfo(addr.c_str(), std::to_string(port).c_str(), &hints, &info);
   if (status != 0) throw NetworkError(gai_strerror(status));
-
-  return AddrInfo(result);
+  info_ = std::unique_ptr<addrinfo, decltype(&freeaddrinfo)>(info, &freeaddrinfo);
 }
 
-AddrInfo::operator struct addrinfo *() { return info; }
-}  // namespace io::network
+AddrInfo::Iterator::Iterator(addrinfo *p) noexcept : ptr_(p) {}
+
+AddrInfo::Iterator::reference AddrInfo::Iterator::operator*() const noexcept { return *ptr_; }
+
+AddrInfo::Iterator::pointer AddrInfo::Iterator::operator->() const noexcept { return ptr_; }
+
+// NOLINTNEXTLINE(cert-dcl21-cpp)
+AddrInfo::Iterator AddrInfo::Iterator::operator++(int) noexcept {
+  auto it = *this;
+  ++(*this);
+  return it;
+}
+AddrInfo::Iterator &AddrInfo::Iterator::operator++() noexcept {
+  ptr_ = ptr_->ai_next;
+  return *this;
+}
+
+bool operator==(const AddrInfo::Iterator &lhs, const AddrInfo::Iterator &rhs) noexcept { return lhs.ptr_ == rhs.ptr_; };
+
+bool operator!=(const AddrInfo::Iterator &lhs, const AddrInfo::Iterator &rhs) noexcept { return !(lhs == rhs); };
+
+void swap(AddrInfo::Iterator &lhs, AddrInfo::Iterator &rhs) noexcept { std::swap(lhs.ptr_, rhs.ptr_); };
+
+}  // namespace memgraph::io::network

src/io/network/addrinfo.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -11,23 +11,53 @@
 
 #pragma once
 
-namespace io::network {
+#include <netdb.h>
+
+#include <iterator>
+#include <memory>
+#include <string>
+
+#include "io/network/endpoint.hpp"
+
+namespace memgraph::io::network {
 
 /**
  * Wrapper class for getaddrinfo.
  * see: man 3 getaddrinfo
  */
 class AddrInfo {
-  explicit AddrInfo(struct addrinfo *info);
-
  public:
-  ~AddrInfo();
+  struct Iterator {
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = addrinfo;
+    using difference_type = std::ptrdiff_t;
+    using pointer = addrinfo *;
+    using reference = addrinfo &;
 
-  static AddrInfo Get(const char *addr, const char *port);
+    Iterator() = default;
+    Iterator(const Iterator &) = default;
+    explicit Iterator(addrinfo *p) noexcept;
+    Iterator &operator=(const Iterator &) = default;
+    reference operator*() const noexcept;
+    pointer operator->() const noexcept;
+    Iterator operator++(int) noexcept;
+    Iterator &operator++() noexcept;
 
-  operator struct addrinfo *();
+    friend bool operator==(const Iterator &lhs, const Iterator &rhs) noexcept;
+    friend bool operator!=(const Iterator &lhs, const Iterator &rhs) noexcept;
+    friend void swap(Iterator &lhs, Iterator &rhs) noexcept;
+
+   private:
+    addrinfo *ptr_{nullptr};
+  };
+
+  AddrInfo(const std::string &addr, uint16_t port);
+  explicit AddrInfo(const Endpoint &endpoint);
+
+  auto begin() const noexcept { return Iterator(info_.get()); }
+  auto end() const noexcept { return Iterator{nullptr}; }
 
  private:
-  struct addrinfo *info;
+  std::unique_ptr<addrinfo, void (*)(addrinfo *)> info_;
 };
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/endpoint.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -21,7 +21,7 @@
 #include "utils/message.hpp"
 #include "utils/string.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 Endpoint::IpFamily Endpoint::GetIpFamily(const std::string &ip_address) {
   in_addr addr4;
@@ -110,4 +110,4 @@ std::ostream &operator<<(std::ostream &os, const Endpoint &endpoint) {
   return os << endpoint.address << ":" << endpoint.port;
 }
 
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/endpoint.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -17,7 +17,7 @@
 #include <optional>
 #include <string>
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /**
  * This class represents a network endpoint that is used in Socket.
@@ -55,4 +55,4 @@ struct Endpoint {
   static IpFamily GetIpFamily(const std::string &ip_address);
 };
 
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/epoll.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -21,7 +21,7 @@
 #include "utils/likely.hpp"
 #include "utils/logging.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /**
  * Wrapper class for epoll.
@@ -104,4 +104,4 @@ class Epoll {
  private:
   const int epoll_fd_;
 };
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/network_error.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,10 +13,10 @@
 
 #include "utils/exceptions.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 class NetworkError : public utils::StacktraceException {
  public:
   using utils::StacktraceException::StacktraceException;
 };
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/serialization.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -14,18 +14,18 @@
 #include "io/network/endpoint.hpp"
 #include "slk/serialization.hpp"
 
-namespace slk {
+namespace memgraph::slk {
 
-inline void Save(const io::network::Endpoint &endpoint, slk::Builder *builder) {
-  slk::Save(endpoint.address_, builder);
-  slk::Save(endpoint.port_, builder);
-  slk::Save(endpoint.family_, builder);
+inline void Save(const io::network::Endpoint &endpoint, Builder *builder) {
+  Save(endpoint.address_, builder);
+  Save(endpoint.port_, builder);
+  Save(endpoint.family_, builder);
 }
 
-inline void Load(io::network::Endpoint *endpoint, slk::Reader *reader) {
-  slk::Load(&endpoint->address_, reader);
-  slk::Load(&endpoint->port_, reader);
-  slk::Load(&endpoint->family_, reader);
+inline void Load(io::network::Endpoint *endpoint, Reader *reader) {
+  Load(&endpoint->address_, reader);
+  Load(&endpoint->port_, reader);
+  Load(&endpoint->family_, reader);
 }
 
-}  // namespace slk
+}  // namespace memgraph::slk

src/io/network/socket.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -9,39 +9,25 @@
 // by the Apache License, Version 2.0, included in the file
 // licenses/APL.txt.
 
-#include "io/network/socket.hpp"
-
-#include <cstdio>
-#include <cstring>
-#include <iostream>
-#include <stdexcept>
-
 #include <arpa/inet.h>
-#include <errno.h>
 #include <fcntl.h>
-#include <netdb.h>
-#include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <poll.h>
-#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <unistd.h>
 
 #include "io/network/addrinfo.hpp"
+#include "io/network/socket.hpp"
 #include "utils/likely.hpp"
 #include "utils/logging.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
-Socket::Socket(Socket &&other) {
-  socket_ = other.socket_;
-  endpoint_ = std::move(other.endpoint_);
+Socket::Socket(Socket &&other) noexcept : socket_(other.socket_), endpoint_(std::move(other.endpoint_)) {
   other.socket_ = -1;
 }
 
-Socket &Socket::operator=(Socket &&other) {
+Socket &Socket::operator=(Socket &&other) noexcept {
   if (this != &other) {
+    if (socket_ != -1) close(socket_);
     socket_ = other.socket_;
     endpoint_ = std::move(other.endpoint_);
     other.socket_ = -1;
@@ -49,9 +35,8 @@ Socket &Socket::operator=(Socket &&other) {
   return *this;
 }
 
-Socket::~Socket() {
-  if (socket_ == -1) return;
-  close(socket_);
+Socket::~Socket() noexcept {
+  if (socket_ != -1) close(socket_);
 }
 
 void Socket::Close() {
@@ -70,33 +55,27 @@ bool Socket::IsOpen() const { return socket_ != -1; }
 bool Socket::Connect(const Endpoint &endpoint) {
   if (socket_ != -1) return false;
 
-  auto info = AddrInfo::Get(endpoint.address.c_str(), std::to_string(endpoint.port).c_str());
-
-  for (struct addrinfo *it = info; it != nullptr; it = it->ai_next) {
-    int sfd = socket(it->ai_family, it->ai_socktype, it->ai_protocol);
+  for (const auto &it : AddrInfo{endpoint}) {
+    int sfd = socket(it.ai_family, it.ai_socktype, it.ai_protocol);
     if (sfd == -1) continue;
-    if (connect(sfd, it->ai_addr, it->ai_addrlen) == 0) {
+    if (connect(sfd, it.ai_addr, it.ai_addrlen) == 0) {
       socket_ = sfd;
       endpoint_ = endpoint;
       break;
-    } else {
-      // If the connect failed close the file descriptor to prevent file
-      // descriptors being leaked
-      close(sfd);
     }
+    // If the connect failed close the file descriptor to prevent file
+    // descriptors being leaked
+    close(sfd);
   }
 
-  if (socket_ == -1) return false;
-  return true;
+  return !(socket_ == -1);
 }
 
 bool Socket::Bind(const Endpoint &endpoint) {
   if (socket_ != -1) return false;
 
-  auto info = AddrInfo::Get(endpoint.address.c_str(), std::to_string(endpoint.port).c_str());
-
-  for (struct addrinfo *it = info; it != nullptr; it = it->ai_next) {
-    int sfd = socket(it->ai_family, it->ai_socktype, it->ai_protocol);
+  for (const auto &it : AddrInfo{endpoint}) {
+    int sfd = socket(it.ai_family, it.ai_socktype, it.ai_protocol);
     if (sfd == -1) continue;
 
     int on = 1;
@@ -107,14 +86,13 @@ bool Socket::Bind(const Endpoint &endpoint) {
       continue;
     }
 
-    if (bind(sfd, it->ai_addr, it->ai_addrlen) == 0) {
+    if (bind(sfd, it.ai_addr, it.ai_addrlen) == 0) {
       socket_ = sfd;
       break;
-    } else {
-      // If the bind failed close the file descriptor to prevent file
-      // descriptors being leaked
-      close(sfd);
     }
+    // If the bind failed close the file descriptor to prevent file
+    // descriptors being leaked
+    close(sfd);
   }
 
   if (socket_ == -1) return false;
@@ -122,7 +100,7 @@ bool Socket::Bind(const Endpoint &endpoint) {
   // detect bound port, used when the server binds to a random port
   struct sockaddr_in6 portdata;
   socklen_t portdatalen = sizeof(portdata);
-  if (getsockname(socket_, (struct sockaddr *)&portdata, &portdatalen) < 0) {
+  if (getsockname(socket_, reinterpret_cast<sockaddr *>(&portdata), &portdatalen) < 0) {
     // If the getsockname failed close the file descriptor to prevent file
     // descriptors being leaked
     close(socket_);
@@ -136,36 +114,35 @@ bool Socket::Bind(const Endpoint &endpoint) {
 }
 
 void Socket::SetNonBlocking() {
-  int flags = fcntl(socket_, F_GETFL, 0);
+  const unsigned flags = fcntl(socket_, F_GETFL);
+  constexpr unsigned o_nonblock = O_NONBLOCK;
   MG_ASSERT(flags != -1, "Can't get socket mode");
-  flags |= O_NONBLOCK;
-  MG_ASSERT(fcntl(socket_, F_SETFL, flags) != -1, "Can't set socket nonblocking");
+  MG_ASSERT(fcntl(socket_, F_SETFL, flags | o_nonblock) != -1, "Can't set socket nonblocking");
 }
 
 void Socket::SetKeepAlive() {
   int optval = 1;
-  socklen_t optlen = sizeof(optval);
-
-  MG_ASSERT(!setsockopt(socket_, SOL_SOCKET, SO_KEEPALIVE, &optval, optlen), "Can't set socket keep alive");
+  MG_ASSERT(!setsockopt(socket_, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)), "Can't set socket keep alive");
 
   optval = 20;  // wait 20s before sending keep-alive packets
-  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPIDLE, (void *)&optval, optlen), "Can't set socket keep alive");
+  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPIDLE, (void *)&optval, sizeof(optval)),
+            "Can't set socket keep alive");
 
   optval = 4;  // 4 keep-alive packets must fail to close
-  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPCNT, (void *)&optval, optlen), "Can't set socket keep alive");
+  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPCNT, (void *)&optval, sizeof(optval)), "Can't set socket keep alive");
 
   optval = 15;  // send keep-alive packets every 15s
-  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPINTVL, (void *)&optval, optlen), "Can't set socket keep alive");
+  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_KEEPINTVL, (void *)&optval, sizeof(optval)),
+            "Can't set socket keep alive");
 }
 
 void Socket::SetNoDelay() {
   int optval = 1;
-  socklen_t optlen = sizeof(optval);
-
-  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_NODELAY, (void *)&optval, optlen), "Can't set socket no delay");
+  MG_ASSERT(!setsockopt(socket_, SOL_TCP, TCP_NODELAY, (void *)&optval, sizeof(optval)), "Can't set socket no delay");
 }
 
-void Socket::SetTimeout(long sec, long usec) {
+// NOLINTNEXTLINE(readability-make-member-function-const)
+void Socket::SetTimeout(int64_t sec, int64_t usec) {
   struct timeval tv;
   tv.tv_sec = sec;
   tv.tv_usec = usec;
@@ -176,7 +153,7 @@ void Socket::SetTimeout(long sec, long usec) {
 }
 
 int Socket::ErrorStatus() const {
-  int optval;
+  int optval = 0;
   socklen_t optlen = sizeof(optval);
   auto status = getsockopt(socket_, SOL_SOCKET, SO_ERROR, &optval, &optlen);
   MG_ASSERT(!status, "getsockopt failed");
@@ -189,21 +166,22 @@ std::optional<Socket> Socket::Accept() {
   sockaddr_storage addr;
   socklen_t addr_size = sizeof addr;
   char addr_decoded[INET6_ADDRSTRLEN];
-  void *addr_src;
-  unsigned short port;
 
-  int sfd = accept(socket_, (struct sockaddr *)&addr, &addr_size);
+  int sfd = accept(socket_, reinterpret_cast<sockaddr *>(&addr), &addr_size);
   if (UNLIKELY(sfd == -1)) return std::nullopt;
 
+  void *addr_src = nullptr;
+  uint16_t port = 0;
+
   if (addr.ss_family == AF_INET) {
-    addr_src = (void *)&(((sockaddr_in *)&addr)->sin_addr);
-    port = ntohs(((sockaddr_in *)&addr)->sin_port);
+    addr_src = &reinterpret_cast<sockaddr_in &>(addr).sin_addr;
+    port = ntohs(reinterpret_cast<sockaddr_in &>(addr).sin_port);
   } else {
-    addr_src = (void *)&(((sockaddr_in6 *)&addr)->sin6_addr);
-    port = ntohs(((sockaddr_in6 *)&addr)->sin6_port);
+    addr_src = &reinterpret_cast<sockaddr_in6 &>(addr).sin6_addr;
+    port = ntohs(reinterpret_cast<sockaddr_in6 &>(addr).sin6_port);
   }
 
-  inet_ntop(addr.ss_family, addr_src, addr_decoded, INET6_ADDRSTRLEN);
+  inet_ntop(addr.ss_family, addr_src, addr_decoded, sizeof(addr_decoded));
 
   Endpoint endpoint(addr_decoded, port);
 
@@ -213,9 +191,11 @@ std::optional<Socket> Socket::Accept() {
 bool Socket::Write(const uint8_t *data, size_t len, bool have_more) {
   // MSG_NOSIGNAL is here to disable raising a SIGPIPE signal when a
   // connection dies mid-write, the socket will only return an EPIPE error.
-  int flags = MSG_NOSIGNAL | (have_more ? MSG_MORE : 0);
+  constexpr unsigned msg_nosignal = MSG_NOSIGNAL;
+  constexpr unsigned msg_more = MSG_MORE;
+  const unsigned flags = msg_nosignal | (have_more ? msg_more : 0);
   while (len > 0) {
-    auto written = send(socket_, data, len, flags);
+    auto written = send(socket_, data, len, static_cast<int>(flags));
     if (written == -1) {
       if (errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR) {
         // Terminal error, return failure.
@@ -253,7 +233,8 @@ bool Socket::WaitForReadyRead() {
   // event occurs.
   int ret = poll(&p, 1, -1);
   if (ret < 1) return false;
-  return p.revents & POLLIN;
+  constexpr unsigned pollin = POLLIN;
+  return static_cast<unsigned>(p.revents) & pollin;
 }
 
 bool Socket::WaitForReadyWrite() {
@@ -265,7 +246,8 @@ bool Socket::WaitForReadyWrite() {
   // event occurs.
   int ret = poll(&p, 1, -1);
   if (ret < 1) return false;
-  return p.revents & POLLOUT;
+  constexpr unsigned pollout = POLLOUT;
+  return static_cast<unsigned>(p.revents) & pollout;
 }
 
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/socket.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -17,7 +17,7 @@
 
 #include "io/network/endpoint.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /**
  * This class creates a network socket.
@@ -27,12 +27,12 @@ namespace io::network {
  */
 class Socket {
  public:
-  Socket() = default;
+  Socket() noexcept = default;
   Socket(const Socket &) = delete;
   Socket &operator=(const Socket &) = delete;
-  Socket(Socket &&);
-  Socket &operator=(Socket &&);
-  ~Socket();
+  Socket(Socket &&) noexcept;
+  Socket &operator=(Socket &&) noexcept;
+  ~Socket() noexcept;
 
   /**
    * Closes the socket if it is open.
@@ -118,7 +118,7 @@ class Socket {
    * @param sec timeout seconds value
    * @param usec timeout microseconds value
    */
-  void SetTimeout(long sec, long usec);
+  void SetTimeout(int64_t sec, int64_t usec);
 
   /**
    * Checks if there are any errors on a socket. Returns 0 if there are none.
@@ -206,4 +206,4 @@ class Socket {
   int socket_ = -1;
   Endpoint endpoint_;
 };
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/stream_buffer.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -13,7 +13,7 @@
 
 #include <cstdint>
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /**
  * StreamBuffer
@@ -25,4 +25,4 @@ struct StreamBuffer {
   uint8_t *data;
   size_t len;
 };
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/io/network/utils.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -23,7 +23,7 @@
 
 #include "utils/logging.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /// Resolves hostname to ip, if already an ip, just returns it
 std::string ResolveHostname(std::string hostname) {
@@ -68,4 +68,4 @@ bool CanEstablishConnection(const io::network::Endpoint &endpoint) {
   return client.Connect(endpoint);
 }
 
-};  // namespace io::network
+};  // namespace memgraph::io::network

src/io/network/utils.hpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -16,7 +16,7 @@
 
 #include "io/network/endpoint.hpp"
 
-namespace io::network {
+namespace memgraph::io::network {
 
 /// Resolves hostname to ip, if already an ip, just returns it
 std::string ResolveHostname(std::string hostname);
@@ -27,4 +27,4 @@ std::optional<std::string> GetHostname();
 // Try to establish a connection to a remote host
 bool CanEstablishConnection(const Endpoint &endpoint);
 
-}  // namespace io::network
+}  // namespace memgraph::io::network

src/kvstore/CMakeLists.txt

@@ -5,7 +5,3 @@ find_package(ZLIB REQUIRED)
 # STATIC library used to store key-value pairs
 add_library(mg-kvstore STATIC kvstore.cpp)
 target_link_libraries(mg-kvstore stdc++fs mg-utils rocksdb BZip2::BZip2 ZLIB::ZLIB gflags)
-
-# STATIC library for dummy key-value storage
-# add_library(mg-kvstore-dummy STATIC kvstore_dummy.cpp)
-# target_link_libraries(mg-kvstore-dummy mg-utils)

src/kvstore/kvstore.cpp

@@ -1,4 +1,4 @@
-// Copyright 2021 Memgraph Ltd.
+// 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
@@ -15,7 +15,7 @@
 #include "kvstore/kvstore.hpp"
 #include "utils/file.hpp"
 
-namespace kvstore {
+namespace memgraph::kvstore {
 
 struct KVStore::impl {
   std::filesystem::path storage;
@@ -169,4 +169,4 @@ bool KVStore::CompactRange(const std::string &begin_prefix, const std::string &e
   return s.ok();
 }
 
-}  // namespace kvstore
+}  // namespace memgraph::kvstore