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Diffstat (limited to 'src/mongo/db/s/sharding_logging.cpp')
| -rw-r--r-- | src/mongo/db/s/sharding_logging.cpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/mongo/db/s/sharding_logging.cpp b/src/mongo/db/s/sharding_logging.cpp new file mode 100644 index 00000000000..3529a42cfbd --- /dev/null +++ b/src/mongo/db/s/sharding_logging.cpp @@ -0,0 +1,197 @@ +/** + * Copyright (C) 2018-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. + */ + +#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding + +#include "mongo/platform/basic.h" + +#include "mongo/db/s/sharding_logging.h" + +#include "mongo/bson/bsonobj.h" +#include "mongo/db/s/sharding_state.h" +#include "mongo/db/server_options.h" +#include "mongo/executor/network_interface.h" +#include "mongo/s/catalog/type_changelog.h" +#include "mongo/s/grid.h" +#include "mongo/util/log.h" + +namespace mongo { + +namespace { + +const std::string kActionLogCollectionName("actionlog"); +const int kActionLogCollectionSizeMB = 20 * 1024 * 1024; + +const std::string kChangeLogCollectionName("changelog"); +const int kChangeLogCollectionSizeMB = 200 * 1024 * 1024; + +// Global ShardingLogging instance +const auto shardingLogging = ServiceContext::declareDecoration<ShardingLogging>(); + +} // namespace + +ShardingLogging::ShardingLogging() = default; + +ShardingLogging::~ShardingLogging() = default; + +ShardingLogging* ShardingLogging::get(ServiceContext* serviceContext) { + return &shardingLogging(serviceContext); +} + +ShardingLogging* ShardingLogging::get(OperationContext* operationContext) { + return get(operationContext->getServiceContext()); +} + +Status ShardingLogging::logAction(OperationContext* opCtx, + const StringData what, + const StringData ns, + const BSONObj& detail) { + if (_actionLogCollectionCreated.load() == 0) { + Status result = _createCappedConfigCollection(opCtx, + kActionLogCollectionName, + kActionLogCollectionSizeMB, + ShardingCatalogClient::kMajorityWriteConcern); + if (result.isOK()) { + _actionLogCollectionCreated.store(1); + } else { + log() << "couldn't create config.actionlog collection:" << causedBy(result); + return result; + } + } + + return _log(opCtx, + kActionLogCollectionName, + what, + ns, + detail, + ShardingCatalogClient::kMajorityWriteConcern); +} + +Status ShardingLogging::logChangeChecked(OperationContext* opCtx, + const StringData what, + const StringData ns, + const BSONObj& detail, + const WriteConcernOptions& writeConcern) { + invariant(serverGlobalParams.clusterRole == ClusterRole::ConfigServer || + writeConcern.wMode == WriteConcernOptions::kMajority); + if (_changeLogCollectionCreated.load() == 0) { + Status result = _createCappedConfigCollection( + opCtx, kChangeLogCollectionName, kChangeLogCollectionSizeMB, writeConcern); + if (result.isOK()) { + _changeLogCollectionCreated.store(1); + } else { + log() << "couldn't create config.changelog collection:" << causedBy(result); + return result; + } + } + + return _log(opCtx, kChangeLogCollectionName, what, ns, detail, writeConcern); +} + +Status ShardingLogging::_log(OperationContext* opCtx, + const StringData logCollName, + const StringData what, + const StringData operationNS, + const BSONObj& detail, + const WriteConcernOptions& writeConcern) { + Date_t now = Grid::get(opCtx)->getNetwork()->now(); + const std::string serverName = str::stream() << Grid::get(opCtx)->getNetwork()->getHostName() + << ":" << serverGlobalParams.port; + const std::string changeId = str::stream() << serverName << "-" << now.toString() << "-" + << OID::gen(); + + ChangeLogType changeLog; + changeLog.setChangeId(changeId); + changeLog.setServer(serverName); + if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) { + changeLog.setShard("config"); + } else { + auto shardingState = ShardingState::get(opCtx); + if (shardingState->enabled()) { + changeLog.setShard(shardingState->shardId().toString()); + } + } + changeLog.setClientAddr(opCtx->getClient()->clientAddress(true)); + changeLog.setTime(now); + changeLog.setNS(operationNS.toString()); + changeLog.setWhat(what.toString()); + changeLog.setDetails(detail); + + BSONObj changeLogBSON = changeLog.toBSON(); + log() << "about to log metadata event into " << logCollName << ": " << redact(changeLogBSON); + + const NamespaceString nss("config", logCollName); + Status result = Grid::get(opCtx)->catalogClient()->insertConfigDocument( + opCtx, nss, changeLogBSON, writeConcern); + + if (!result.isOK()) { + warning() << "Error encountered while logging config change with ID [" << changeId + << "] into collection " << logCollName << ": " << redact(result); + } + + return result; +} + +Status ShardingLogging::_createCappedConfigCollection(OperationContext* opCtx, + StringData collName, + int cappedSize, + const WriteConcernOptions& writeConcern) { + BSONObj createCmd = BSON("create" << collName << "capped" << true << "size" << cappedSize + << WriteConcernOptions::kWriteConcernField + << writeConcern.toBSON()); + + auto result = + Grid::get(opCtx)->shardRegistry()->getConfigShard()->runCommandWithFixedRetryAttempts( + opCtx, + ReadPreferenceSetting{ReadPreference::PrimaryOnly}, + "config", + createCmd, + Shard::kDefaultConfigCommandTimeout, + Shard::RetryPolicy::kIdempotent); + + if (!result.isOK()) { + return result.getStatus(); + } + + if (!result.getValue().commandStatus.isOK()) { + if (result.getValue().commandStatus == ErrorCodes::NamespaceExists) { + if (result.getValue().writeConcernStatus.isOK()) { + return Status::OK(); + } else { + return result.getValue().writeConcernStatus; + } + } else { + return result.getValue().commandStatus; + } + } + + return result.getValue().writeConcernStatus; +} + +} // namespace mongo |