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/**
* 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_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/collection_sharding_state_factory_shard.h"
#include "mongo/db/service_context.h"
#include "mongo/executor/network_interface_factory.h"
#include "mongo/executor/network_interface_thread_pool.h"
#include "mongo/executor/thread_pool_task_executor.h"
namespace mongo {
CollectionShardingStateFactoryShard::CollectionShardingStateFactoryShard(
ServiceContext* serviceContext)
: CollectionShardingStateFactory(serviceContext) {}
CollectionShardingStateFactoryShard::~CollectionShardingStateFactoryShard() {
join();
}
void CollectionShardingStateFactoryShard::join() {
if (_rangeDeletionExecutor) {
_rangeDeletionExecutor->shutdown();
_rangeDeletionExecutor->join();
}
}
std::unique_ptr<CollectionShardingState> CollectionShardingStateFactoryShard::make(
const NamespaceString& nss) {
return std::make_unique<CollectionShardingRuntime>(
_serviceContext, nss, _getRangeDeletionExecutor());
}
std::shared_ptr<executor::TaskExecutor>
CollectionShardingStateFactoryShard::_getRangeDeletionExecutor() {
stdx::lock_guard<Latch> lg(_mutex);
if (!_rangeDeletionExecutor) {
const std::string kExecName("CollectionRangeDeleter-TaskExecutor");
// CAUTION: The safety of range deletion depends on using a task executor that schedules
// work on a single thread.
auto net = executor::makeNetworkInterface(kExecName);
auto pool = std::make_unique<executor::NetworkInterfaceThreadPool>(net.get());
auto taskExecutor =
std::make_shared<executor::ThreadPoolTaskExecutor>(std::move(pool), std::move(net));
taskExecutor->startup();
_rangeDeletionExecutor = std::move(taskExecutor);
}
return _rangeDeletionExecutor;
}
} // namespace mongo
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