Replication refactor part 7 (#1550)
* Split queries into system and data queries * System queries are sequentially executed and generate separate transaction deltas * System transaction try locks for 100ms * last_commited_system_ts saved to DBMS durability * Replicating CREATE/DROP DATABASE * Sending a system snapshot if REPLICA behind * Passing a copy of the gatekeeper::access as std::any to all functions that could call an async execution * Removed delete_on_drop flag (we now always delete on drop) * Using UUID as the directory name for databases * DBMS durability update (added versioning and salient information) * Automatic migration from previous version * Interpreter can run some queries without a target database * SHOW REPLICA returns the status of the currently active DB * Returning UUID instead of db name in the RPC responses * Using UUIDs for database specification in RPC (not name) * FrequentCheck forces update on reconnect * TimestampRpc will detect if a replica is behind, and will update client's state * Safer SLK reads * Split SHOW DATABASES in two SHOW DATABASES (list of current databases) and SHOW DATABASE a single string naming the current database --------- Co-authored-by: Gareth Lloyd <gareth.lloyd@memgraph.io>
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@@ -707,12 +707,11 @@ int main(int argc, char *argv[]) {
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std::unordered_map<NodeId, memgraph::storage::Gid> node_id_map;
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memgraph::storage::Config config{
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.items = {.properties_on_edges = FLAGS_storage_properties_on_edges},
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.durability = {.storage_directory = FLAGS_data_directory,
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.recover_on_startup = false,
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.snapshot_wal_mode = memgraph::storage::Config::Durability::SnapshotWalMode::DISABLED,
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.snapshot_on_exit = true},
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.salient = {.items = {.properties_on_edges = FLAGS_storage_properties_on_edges}},
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};
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memgraph::replication::ReplicationState repl_state{memgraph::storage::ReplicationStateRootPath(config)};
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auto store = memgraph::dbms::CreateInMemoryStorage(config, repl_state);
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