071df2f439
* 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>
37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// Copyright 2023 Memgraph Ltd.
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//
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// Use of this software is governed by the Business Source License
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// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
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// License, and you may not use this file except in compliance with the Business Source License.
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//
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// As of the Change Date specified in that file, in accordance with
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// the Business Source License, use of this software will be governed
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// by the Apache License, Version 2.0, included in the file
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// licenses/APL.txt.
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#include "utils/uuid.hpp"
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#include <uuid/uuid.h>
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#include "slk/serialization.hpp"
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namespace memgraph::utils {
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std::string GenerateUUID() {
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uuid_t uuid;
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char decoded[37]; // magic size from: man 2 uuid_unparse
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uuid_generate(uuid);
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uuid_unparse(uuid, decoded);
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return std::string(decoded);
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}
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} // namespace memgraph::utils
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// Serialize UUID
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namespace memgraph::slk {
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void Save(const memgraph::utils::UUID &self, memgraph::slk::Builder *builder) {
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const auto &arr = static_cast<utils::UUID::arr_t>(self);
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memgraph::slk::Save(arr, builder);
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}
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void Load(memgraph::utils::UUID *self, memgraph::slk::Reader *reader) { memgraph::slk::Load(&self->uuid, reader); }
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} // namespace memgraph::slk
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