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/**
* Copyright (C) 2021-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/db/s/refine_collection_shard_key_coordinator.h"
#include "mongo/db/catalog/collection_uuid_mismatch.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/s/dist_lock_manager.h"
#include "mongo/db/s/sharding_ddl_util.h"
#include "mongo/logv2/log.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/refine_collection_shard_key_gen.h"
namespace mongo {
RefineCollectionShardKeyCoordinator::RefineCollectionShardKeyCoordinator(
ShardingDDLCoordinatorService* service, const BSONObj& initialState)
: RefineCollectionShardKeyCoordinator(
service, initialState, true /* persistCoordinatorDocument */) {}
RefineCollectionShardKeyCoordinator::RefineCollectionShardKeyCoordinator(
ShardingDDLCoordinatorService* service,
const BSONObj& initialState,
bool persistCoordinatorDocument)
: ShardingDDLCoordinator(service, initialState),
_doc(RefineCollectionShardKeyCoordinatorDocument::parse(
IDLParserErrorContext("RefineCollectionShardKeyCoordinatorDocument"), initialState)),
_newShardKey(_doc.getNewShardKey()),
_persistCoordinatorDocument(persistCoordinatorDocument) {}
void RefineCollectionShardKeyCoordinator::checkIfOptionsConflict(const BSONObj& doc) const {
// If we have two refine collections on the same namespace, then the arguments must be the same.
const auto otherDoc = RefineCollectionShardKeyCoordinatorDocument::parse(
IDLParserErrorContext("RefineCollectionShardKeyCoordinatorDocument"), doc);
uassert(ErrorCodes::ConflictingOperationInProgress,
"Another refine collection with different arguments is already running for the same "
"namespace",
SimpleBSONObjComparator::kInstance.evaluate(
_doc.getRefineCollectionShardKeyRequest().toBSON() ==
otherDoc.getRefineCollectionShardKeyRequest().toBSON()));
}
boost::optional<BSONObj> RefineCollectionShardKeyCoordinator::reportForCurrentOp(
MongoProcessInterface::CurrentOpConnectionsMode connMode,
MongoProcessInterface::CurrentOpSessionsMode sessionMode) noexcept {
BSONObjBuilder cmdBob;
if (const auto& optComment = getForwardableOpMetadata().getComment()) {
cmdBob.append(optComment.get().firstElement());
}
cmdBob.appendElements(_doc.getRefineCollectionShardKeyRequest().toBSON());
BSONObjBuilder bob;
bob.append("type", "op");
bob.append("desc", "RefineCollectionShardKeyCoordinator");
bob.append("op", "command");
bob.append("ns", nss().toString());
bob.append("command", cmdBob.obj());
bob.append("active", true);
return bob.obj();
}
void RefineCollectionShardKeyCoordinator::_enterPhase(Phase newPhase) {
if (!_persistCoordinatorDocument) {
return;
}
StateDoc newDoc(_doc);
newDoc.setPhase(newPhase);
LOGV2_DEBUG(
6233200,
2,
"Refine collection shard key coordinator phase transition",
"namespace"_attr = nss(),
"newPhase"_attr = RefineCollectionShardKeyCoordinatorPhase_serializer(newDoc.getPhase()),
"oldPhase"_attr = RefineCollectionShardKeyCoordinatorPhase_serializer(_doc.getPhase()));
if (_doc.getPhase() == Phase::kUnset) {
_doc = _insertStateDocument(std::move(newDoc));
return;
}
_doc = _updateStateDocument(cc().makeOperationContext().get(), std::move(newDoc));
}
ExecutorFuture<void> RefineCollectionShardKeyCoordinator::_runImpl(
std::shared_ptr<executor::ScopedTaskExecutor> executor,
const CancellationToken& token) noexcept {
return ExecutorFuture<void>(**executor)
.then(_executePhase(
Phase::kRefineCollectionShardKey,
[this, anchor = shared_from_this()] {
auto opCtxHolder = cc().makeOperationContext();
auto* opCtx = opCtxHolder.get();
getForwardableOpMetadata().setOn(opCtx);
const auto cm = uassertStatusOK(
Grid::get(opCtx)->catalogCache()->getShardedCollectionRoutingInfoWithRefresh(
opCtx, nss()));
ConfigsvrRefineCollectionShardKey configsvrRefineCollShardKey(
nss(), _newShardKey.toBSON(), cm.getVersion().epoch());
configsvrRefineCollShardKey.setDbName(nss().db().toString());
auto configShard = Grid::get(opCtx)->shardRegistry()->getConfigShard();
if (_persistCoordinatorDocument) {
sharding_ddl_util::stopMigrations(opCtx, nss(), boost::none);
}
{
AutoGetCollection coll{opCtx, nss(), MODE_IS};
checkCollectionUUIDMismatch(opCtx, *coll, _doc.getCollectionUUID());
}
const auto cmdResponse = uassertStatusOK(configShard->runCommand(
opCtx,
ReadPreferenceSetting(ReadPreference::PrimaryOnly),
NamespaceString::kAdminDb.toString(),
CommandHelpers::appendMajorityWriteConcern(
configsvrRefineCollShardKey.toBSON({}), opCtx->getWriteConcern()),
Shard::RetryPolicy::kIdempotent));
try {
uassertStatusOK(
Shard::CommandResponse::getEffectiveStatus(std::move(cmdResponse)));
} catch (const DBException&) {
if (!_persistCoordinatorDocument) {
_completeOnError = true;
}
throw;
}
}))
.onError([this, anchor = shared_from_this()](const Status& status) {
LOGV2_ERROR(5277700,
"Error running refine collection shard key",
"namespace"_attr = nss(),
"error"_attr = redact(status));
return status;
})
.onCompletion([this, anchor = shared_from_this()](const Status& status) {
auto opCtxHolder = cc().makeOperationContext();
auto* opCtx = opCtxHolder.get();
getForwardableOpMetadata().setOn(opCtx);
if (_persistCoordinatorDocument) {
sharding_ddl_util::resumeMigrations(opCtx, nss(), boost::none);
}
return status;
});
}
RefineCollectionShardKeyCoordinator_NORESILIENT::RefineCollectionShardKeyCoordinator_NORESILIENT(
ShardingDDLCoordinatorService* service, const BSONObj& initialState)
: RefineCollectionShardKeyCoordinator(
service, initialState, false /* persistCoordinatorDocument */) {}
} // namespace mongo
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