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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.
*/
#pragma once
#include <boost/optional/optional.hpp>
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/db/cancelable_operation_context.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/ops/write_ops_exec.h"
#include "mongo/db/ops/write_ops_gen.h"
#include "mongo/db/repl/repl_client_info.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/s/migration_session_id.h"
#include "mongo/db/s/range_deletion_util.h"
#include "mongo/db/s/sharding_runtime_d_params_gen.h"
#include "mongo/db/session/session_catalog_mongod.h"
#include "mongo/db/write_concern_options.h"
#include "mongo/logv2/log.h"
#include "mongo/s/catalog/type_chunk.h"
#include "mongo/s/grid.h"
#include "mongo/util/concurrency/semaphore_ticketholder.h"
#include "mongo/util/uuid.h"
namespace mongo {
// The purpose of this type is to allow inserters to communicate
// their progress to the outside world.
class MigrationCloningProgressSharedState {
mutable Mutex _m;
repl::OpTime _maxOptime;
long long _numCloned = 0;
long long _numBytes = 0;
public:
void updateMaxOptime(const repl::OpTime& _newOptime) {
stdx::lock_guard lk(_m);
_maxOptime = std::max(_maxOptime, _newOptime);
}
repl::OpTime getMaxOptime() const {
stdx::lock_guard lk(_m);
return _maxOptime;
}
void incNumCloned(int num) {
stdx::lock_guard lk(_m);
_numCloned += num;
}
void incNumBytes(int num) {
stdx::lock_guard lk(_m);
_numBytes += num;
}
long long getNumCloned() const {
stdx::lock_guard lk(_m);
return _numCloned;
}
long long getNumBytes() const {
stdx::lock_guard lk(_m);
return _numBytes;
}
};
// This type contains a BSONObj _batch corresponding to a _migrateClone response.
// The purpose of this type is to perform the insertions for this batch.
// Those insertions happen in its "run" method. The MigrationBatchFetcher
// schedules these jobs on a thread pool. This class has no knowledge that it runs
// on a thread pool. It sole purpose is to perform insertions and communicate its progress
// (inluding the new max opTime).
class MigrationBatchInserter {
public:
// Do inserts.
void run(Status status) const;
MigrationBatchInserter(OperationContext* outerOpCtx,
OperationContext* innerOpCtx,
BSONObj batch,
const NamespaceString& nss,
const ChunkRange& range,
const WriteConcernOptions& writeConcern,
const UUID& collectionUuid,
std::shared_ptr<MigrationCloningProgressSharedState> migrationProgress,
const UUID& migrationId,
int threadCount,
SemaphoreTicketHolder* secondaryThrottleTicket)
: _outerOpCtx{outerOpCtx},
_innerOpCtx{innerOpCtx},
_batch{batch},
_nss{nss},
_range{range},
_writeConcern{writeConcern},
_collectionUuid{collectionUuid},
_migrationProgress{migrationProgress},
_migrationId{migrationId},
_threadCount{threadCount},
_secondaryThrottleTicket{secondaryThrottleTicket} {}
static void onCreateThread(const std::string& threadName);
private:
OperationContext* _outerOpCtx;
OperationContext* _innerOpCtx;
BSONObj _batch;
NamespaceString _nss;
ChunkRange _range;
WriteConcernOptions _writeConcern;
UUID _collectionUuid;
std::shared_ptr<MigrationCloningProgressSharedState> _migrationProgress;
UUID _migrationId;
int _threadCount;
SemaphoreTicketHolder* _secondaryThrottleTicket;
};
} // namespace mongo
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