diff options
Diffstat (limited to 'src/mongo/s/router_role.cpp')
| -rw-r--r-- | src/mongo/s/router_role.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/mongo/s/router_role.cpp b/src/mongo/s/router_role.cpp new file mode 100644 index 00000000000..96ee6f2228d --- /dev/null +++ b/src/mongo/s/router_role.cpp @@ -0,0 +1,164 @@ +/** + * Copyright (C) 2022-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_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding + +#include "mongo/s/router_role.h" + +#include "mongo/logv2/log.h" +#include "mongo/s/grid.h" +#include "mongo/s/stale_exception.h" + +namespace mongo { +namespace sharding { +namespace router { + +RouterBase::RouterBase(ServiceContext* service) : _service(service) {} + +DBPrimaryRouter::DBPrimaryRouter(ServiceContext* service, StringData db) + : RouterBase(service), _db(db.toString()) {} + +void DBPrimaryRouter::appendDDLRoutingTokenToCommand(const DatabaseType& dbt, + BSONObjBuilder* builder) { + const auto& dbVersion = dbt.getVersion(); + if (!dbVersion.isFixed()) { + BSONObjBuilder dbvBuilder(builder->subobjStart(DatabaseVersion::kDatabaseVersionField)); + dbVersion.serialize(&dbvBuilder); + } +} + +void DBPrimaryRouter::appendCRUDUnshardedRoutingTokenToCommand(const ShardId& shardId, + const DatabaseVersion& dbVersion, + BSONObjBuilder* builder) { + if (!dbVersion.isFixed()) { + BSONObjBuilder dbvBuilder(builder->subobjStart(DatabaseVersion::kDatabaseVersionField)); + dbVersion.serialize(&dbvBuilder); + } + ChunkVersion::UNSHARDED().serializeToBSON(ChunkVersion::kShardVersionField, builder); +} + +CachedDatabaseInfo DBPrimaryRouter::_getRoutingInfo(OperationContext* opCtx) const { + auto catalogCache = Grid::get(_service)->catalogCache(); + return uassertStatusOK(catalogCache->getDatabase(opCtx, _db)); +} + +void DBPrimaryRouter::_onException(RouteContext* context, Status s) { + auto catalogCache = Grid::get(_service)->catalogCache(); + + if (s == ErrorCodes::StaleDbVersion) { + auto si = s.extraInfo<StaleDbRoutingVersion>(); + tassert(6375900, "StaleDbVersion must have extraInfo", si); + tassert(6375901, + str::stream() << "StaleDbVersion on unexpected database. Expected " << _db + << ", received " << si->getDb(), + si->getDb() == _db); + + catalogCache->onStaleDatabaseVersion(si->getDb(), si->getVersionWanted()); + } else { + uassertStatusOK(s); + } + + if (++context->numAttempts > kMaxNumStaleVersionRetries) { + uassertStatusOKWithContext( + s, + str::stream() << "Exceeded maximum number of " << kMaxNumStaleVersionRetries + << " retries attempting \'" << context->comment << "\'"); + } else { + LOGV2_DEBUG(6375902, + 3, + "Retrying database primary routing operation", + "attempt"_attr = context->numAttempts, + "comment"_attr = context->comment, + "status"_attr = s); + } +} + +CollectionRouter::CollectionRouter(ServiceContext* service, NamespaceString nss) + : RouterBase(service), _nss(std::move(nss)) {} + +void CollectionRouter::appendCRUDRoutingTokenToCommand(const ShardId& shardId, + const ChunkManager& cm, + BSONObjBuilder* builder) { + auto chunkVersion(cm.getVersion(shardId)); + + if (chunkVersion == ChunkVersion::UNSHARDED()) { + // Need to add the database version as well + const auto& dbVersion = cm.dbVersion(); + if (!dbVersion.isFixed()) { + BSONObjBuilder dbvBuilder(builder->subobjStart(DatabaseVersion::kDatabaseVersionField)); + dbVersion.serialize(&dbvBuilder); + } + } + chunkVersion.serializeToBSON(ChunkVersion::kShardVersionField, builder); +} + +ChunkManager CollectionRouter::_getRoutingInfo(OperationContext* opCtx) const { + auto catalogCache = Grid::get(_service)->catalogCache(); + return uassertStatusOK(catalogCache->getCollectionRoutingInfo(opCtx, _nss)); +} + +void CollectionRouter::_onException(RouteContext* context, Status s) { + auto catalogCache = Grid::get(_service)->catalogCache(); + + if (s == ErrorCodes::StaleDbVersion) { + auto si = s.extraInfo<StaleDbRoutingVersion>(); + tassert(6375903, "StaleDbVersion must have extraInfo", si); + catalogCache->onStaleDatabaseVersion(si->getDb(), si->getVersionWanted()); + } else if (s == ErrorCodes::StaleConfig) { + auto si = s.extraInfo<StaleConfigInfo>(); + tassert(6375904, "StaleConfig must have extraInfo", si); + catalogCache->invalidateShardOrEntireCollectionEntryForShardedCollection( + si->getNss(), si->getVersionWanted(), si->getShardId()); + } else if (s == ErrorCodes::StaleEpoch) { + auto si = s.extraInfo<StaleEpochInfo>(); + tassert(6375905, "StaleEpoch must have extra info", si); + catalogCache->invalidateShardOrEntireCollectionEntryForShardedCollection( + si->getNss(), si->getVersionWanted(), ShardId()); + } else { + uassertStatusOK(s); + } + + if (++context->numAttempts > kMaxNumStaleVersionRetries) { + uassertStatusOKWithContext( + s, + str::stream() << "Exceeded maximum number of " << kMaxNumStaleVersionRetries + << " retries attempting \'" << context->comment << "\'"); + } else { + LOGV2_DEBUG(6375906, + 3, + "Retrying collection routing operation", + "attempt"_attr = context->numAttempts, + "comment"_attr = context->comment, + "status"_attr = s); + } +} + +} // namespace router +} // namespace sharding +} // namespace mongo |