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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.
*/
#pragma once
#include <boost/optional.hpp>
#include <functional>
#include <memory>
#include "mongo/base/string_data.h"
#include "mongo/bson/oid.h"
#include "mongo/db/keys_collection_client.h"
#include "mongo/s/client/shard_registry.h"
namespace mongo {
class CatalogCache;
class ConnectionString;
class OperationContext;
class ShardFactory;
class Status;
class ShardingCatalogClient;
namespace executor {
class NetworkInterface;
class TaskExecutor;
} // namespace executor
namespace rpc {
class EgressMetadataHook;
using ShardingEgressMetadataHookBuilder = std::function<std::unique_ptr<EgressMetadataHook>()>;
} // namespace rpc
/**
* Constructs a TaskExecutor which contains the required configuration for the sharding subsystem.
*/
std::unique_ptr<executor::TaskExecutor> makeShardingTaskExecutor(
std::unique_ptr<executor::NetworkInterface> net);
/**
* Initializes the global ShardingCatalogClient, ShardingCatalogManager, and Grid objects.
*/
Status initializeGlobalShardingState(
OperationContext* opCtx,
std::unique_ptr<CatalogCache> catalogCache,
std::unique_ptr<ShardRegistry> shardRegistry,
rpc::ShardingEgressMetadataHookBuilder hookBuilder,
boost::optional<size_t> taskExecutorPoolSize,
std::function<std::unique_ptr<KeysCollectionClient>(ShardingCatalogClient*)> initKeysClient);
/**
* Loads global settings from config server such as cluster ID and default write concern.
*/
Status loadGlobalSettingsFromConfigServer(OperationContext* opCtx,
ShardingCatalogClient* catalogClient);
/**
* Pre-caches mongod routing info for the calling process.
*/
void preCacheMongosRoutingInfo(OperationContext* opCtx);
/**
* Warms up connections to shards with best effort strategy.
*/
Status preWarmConnectionPool(OperationContext* opCtx);
} // namespace mongo
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