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/**
* Copyright (C) 2023-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include <benchmark/benchmark.h>
#include "mongo/base/init.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/read_write_concern_defaults_cache_lookup_mock.h"
#include "mongo/db/repl/wait_for_majority_service.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/config/config_server_test_fixture.h"
#include "mongo/db/s/config/sharding_catalog_manager.h"
#include "mongo/db/s/config_server_op_observer.h"
#include "mongo/db/s/transaction_coordinator_service.h"
#include "mongo/db/session/logical_session_cache_noop.h"
#include "mongo/db/session/session_catalog_mongod.h"
#include "mongo/db/vector_clock.h"
#include "mongo/idl/server_parameter_test_util.h"
#include <cstdint>
namespace mongo {
namespace {
// Reusing the ConfigServerTestFixture for benchmarking.
// _doTest has empty implementation to honor the abstract class, but it is not used in the benchmark
// framework.
class BenchmarkConfigServerTestFixture : public ConfigServerTestFixture {
public:
BenchmarkConfigServerTestFixture() : ConfigServerTestFixture() {
ConfigServerTestFixture::setUp();
DBDirectClient client(operationContext());
client.createCollection(NamespaceString::kSessionTransactionsTableNamespace);
client.createIndexes(NamespaceString::kSessionTransactionsTableNamespace,
{MongoDSessionCatalog::getConfigTxnPartialIndexSpec()});
ReadWriteConcernDefaults::create(getServiceContext(), _lookupMock.getFetchDefaultsFn());
LogicalSessionCache::set(getServiceContext(), std::make_unique<LogicalSessionCacheNoop>());
TransactionCoordinatorService::get(operationContext())
->onShardingInitialization(operationContext(), true);
WaitForMajorityService::get(getServiceContext()).startup(getServiceContext());
ShardingCatalogManager::get(operationContext())->startup();
ASSERT_OK(ShardingCatalogManager::get(operationContext())
->initializeConfigDatabaseIfNeeded(operationContext()));
}
~BenchmarkConfigServerTestFixture() {
TransactionCoordinatorService::get(operationContext())->onStepDown();
WaitForMajorityService::get(getServiceContext()).shutDown();
ShardingCatalogManager::get(operationContext())->shutDown();
ConfigServerTestFixture::tearDown();
}
OperationContext* opCxt() {
return operationContext();
}
/* Generate and insert the entries into the config.shards collection
* Given the desired number of shards n, generates a vector of n ShardType objects (in BSON
* format) according to the following template, Given the i-th element :
* - shard_id : shard<i>
* - host : localhost:3000<i>
* - state : always 1 (kShardAware)
*/
void setupConfigShards(int nShards) {
_shardIds.reserve(nShards);
for (auto& doc : _generateConfigShardSampleData(nShards)) {
_shardIds.push_back(doc["_id"].String()); // store it locally for later use
ASSERT_OK(insertToConfigCollection(
operationContext(), NamespaceString::kConfigsvrShardsNamespace, doc));
}
}
/* Generate and insert the entries into the config.database collection
* Given the desired number of db n, generates a vector of n DatabaseType objects (in BSON
* format) according to the following template, Given the i-th element :
* - dbName : db<i>
* - primaryShard : shard<i>
* - databaseVersion : always DatabaseVersion::makeFixed()
*/
void setupConfigDatabase(int nDbs) {
for (int i = 1; i <= nDbs; i++) {
const std::string dbName = "db" + std::to_string(i);
const std::string shardName = "shard" + std::to_string(i);
const DatabaseType dbEntry(dbName, ShardId(shardName), DatabaseVersion::makeFixed());
ASSERT_OK(insertToConfigCollection(
operationContext(), NamespaceString::kConfigDatabasesNamespace, dbEntry.toBSON()));
}
}
/*
* Generates N chunks for a collection on a given shard
*/
void setupCollectionWithChunks(const mongo::NamespaceString& nss, uint32_t numChunks) {
std::vector<ChunkType> chunks;
chunks.reserve(numChunks);
auto collUuid = UUID::gen();
for (uint32_t i = 1; i <= numChunks; i++) {
uint32_t lb = _lastKey + i;
uint32_t ub = _lastKey + i + 1;
uint32_t epoch = _lastKey + i + 2;
ChunkType c1(collUuid,
ChunkRange(BSON("x" << (int)lb), BSON("x" << (int)ub)),
ChunkVersion({OID::gen(), {epoch, epoch}}, {epoch, epoch}),
_shardIds[i % _shardIds.size()]);
chunks.push_back(c1);
}
_lastKey += numChunks + 2;
setupCollection(nss, BSON("x" << 1), chunks);
// Ensure that the vector clock is able to return an up-to-date config time to both the
// ShardingCatalogManager and this test.
mongo::ConfigServerOpObserver opObserver;
auto initTime = VectorClock::get(operationContext())->getTime();
repl::OpTime majorityCommitPoint(initTime.clusterTime().asTimestamp(), 1);
opObserver.onMajorityCommitPointUpdate(getServiceContext(), majorityCommitPoint);
}
private:
void _doTest() override{};
std::vector<BSONObj> _generateConfigShardSampleData(int nShards) const {
std::vector<BSONObj> configShardData;
for (int i = 1; i <= nShards; i++) {
const std::string shardName = "shard" + std::to_string(i);
const std::string shardHost = "localhost:" + std::to_string(30000 + i);
const auto& doc = BSON("_id" << shardName << "host" << shardHost << "state"
<< ShardType::ShardState::kShardAware);
configShardData.push_back(doc);
}
return configShardData;
}
std::vector<ShardId> _shardIds;
uint32_t _lastKey = 0;
ReadWriteConcernDefaultsLookupMock _lookupMock;
};
} // namespace
void BM_initPlacementHistory(benchmark::State& state) {
RAIIServerParameterControllerForTest featureFlagHistoricalPlacementShardingCatalog{
"featureFlagHistoricalPlacementShardingCatalog", true};
serverGlobalParams.clusterRole = ClusterRole::ConfigServer;
BenchmarkConfigServerTestFixture fixture;
const int nChunks = state.range(0);
const int nCollections = state.range(1);
const int nShards = state.range(2);
fixture.setupConfigShards(nShards);
fixture.setupConfigDatabase(10); // 10 databases
for (int i = 1; i <= nCollections; i++) {
const std::string collName = "coll" + std::to_string(i);
fixture.setupCollectionWithChunks(NamespaceString("db1." + collName), nChunks);
}
for (auto _ : state) {
ShardingCatalogManager::get(fixture.opCxt())->initializePlacementHistory(fixture.opCxt());
}
};
// nChunksPerCollection, nCollections, nShards
BENCHMARK(BM_initPlacementHistory)
->Unit(benchmark::kMillisecond)
->Args({100, 1, 10})
->Args({100, 10, 10})
->Args({100, 100, 10})
->Args({100, 100, 100})
->Args({1000, 10, 10})
->Args({1000, 100, 10})
->Args({1000, 100, 100})
->Args({10000, 10, 10})
->Args({10000, 100, 10})
->Args({10000, 100, 100});
} // namespace mongo
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