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/**
* 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/platform/basic.h"
#include "mongo/db/s/config/configsvr_coordinator_service.h"
#include "mongo/base/checked_cast.h"
#include "mongo/db/repl/primary_only_service.h"
#include "mongo/db/s/config/configsvr_coordinator.h"
#include "mongo/db/s/config/set_cluster_parameter_coordinator.h"
#include "mongo/db/s/config/set_user_write_block_mode_coordinator.h"
#include "mongo/logv2/log.h"
namespace mongo {
ConfigsvrCoordinatorService* ConfigsvrCoordinatorService::getService(OperationContext* opCtx) {
auto registry = repl::PrimaryOnlyServiceRegistry::get(opCtx->getServiceContext());
auto service = registry->lookupServiceByName(kServiceName);
return checked_cast<ConfigsvrCoordinatorService*>(std::move(service));
}
std::shared_ptr<ConfigsvrCoordinator> ConfigsvrCoordinatorService::getOrCreateService(
OperationContext* opCtx, BSONObj coorDoc) {
auto [coordinator, created] = [&] {
try {
auto [coordinator, created] = PrimaryOnlyService::getOrCreateInstance(opCtx, coorDoc);
return std::make_pair(
checked_pointer_cast<ConfigsvrCoordinator>(std::move(coordinator)),
std::move(created));
} catch (const DBException& ex) {
LOGV2_ERROR(6226201,
"Failed to create instance of configsvr coordinator",
"reason"_attr = redact(ex));
throw;
}
}();
// Ensure the existing instance have the same options.
uassert(ErrorCodes::ConflictingOperationInProgress,
"Another ConfigsvrCoordinator with different arguments is already running",
created || coordinator->hasSameOptions(coorDoc));
return coordinator;
}
std::shared_ptr<ConfigsvrCoordinatorService::Instance>
ConfigsvrCoordinatorService::constructInstance(BSONObj initialState) {
LOGV2_DEBUG(6347300,
2,
"Constructing new ConfigsvrCoordinator instance",
"initialState"_attr = initialState);
const auto op = extractConfigsvrCoordinatorMetadata(initialState);
switch (op.getId().getCoordinatorType()) {
case ConfigsvrCoordinatorTypeEnum::kSetUserWriteBlockMode:
return std::make_shared<SetUserWriteBlockModeCoordinator>(std::move(initialState));
case ConfigsvrCoordinatorTypeEnum::kSetClusterParameter:
return std::make_shared<SetClusterParameterCoordinator>(std::move(initialState));
default:
uasserted(ErrorCodes::BadValue,
str::stream()
<< "Encountered unknown ConfigsvrCoordinator operation type: "
<< ConfigsvrCoordinatorType_serializer(op.getId().getCoordinatorType()));
}
}
bool ConfigsvrCoordinatorService::areAllCoordinatorsOfTypeFinished(
OperationContext* opCtx, ConfigsvrCoordinatorTypeEnum coordinatorType) {
// First, check if all in-memory ConfigsvrCoordinators are finished.
const auto& instances = getAllInstances(opCtx);
for (const auto& instance : instances) {
auto typedInstance = checked_pointer_cast<ConfigsvrCoordinator>(instance);
if (typedInstance->coordinatorType() == coordinatorType) {
if (!typedInstance->getCompletionFuture().isReady()) {
return false;
}
}
}
// If the POS has just been rebuilt on a newly-elected primary, there is a chance that the
// the coordinator instance does not exist yet. Query the state document namespace for any
// documents that will be built into instances.
DBDirectClient client(opCtx);
FindCommandRequest findStateDocs{NamespaceString::kConfigsvrCoordinatorsNamespace};
findStateDocs.setFilter(BSON("_id" << BSON("coordinatorType" << coordinatorType)));
return !client.find(std::move(findStateDocs))->more();
}
} // namespace mongo
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