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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 <memory>
#include "mongo/db/op_observer/oplog_writer.h"
namespace mongo {
/**
* Accumulates replicated operations for multi-document transactions and batched WUOW writes.
* When the operations are ready to be replicated, we compose the final chain of applyOps oplog
* entries and write it to the actual oplog referenced in '_targetOplogWriter'.
*/
class OplogWriterTransactionProxy : public OplogWriter {
OplogWriterTransactionProxy(const OplogWriterTransactionProxy&) = delete;
OplogWriterTransactionProxy& operator=(const OplogWriterTransactionProxy&) = delete;
public:
OplogWriterTransactionProxy(std::unique_ptr<OplogWriter> targetOplogWriter);
virtual ~OplogWriterTransactionProxy() = default;
void appendOplogEntryChainInfo(OperationContext* opCtx,
repl::MutableOplogEntry* oplogEntry,
repl::OplogLink* oplogLink,
const std::vector<StmtId>& stmtIds) override;
std::vector<repl::OpTime> logInsertOps(
OperationContext* opCtx,
repl::MutableOplogEntry* oplogEntryTemplate,
std::vector<InsertStatement>::const_iterator begin,
std::vector<InsertStatement>::const_iterator end,
std::function<boost::optional<ShardId>(const BSONObj& doc)> getDestinedRecipientFn)
override;
repl::OpTime logOp(OperationContext* opCtx, repl::MutableOplogEntry* oplogEntry) override;
std::vector<OplogSlot> getNextOpTimes(OperationContext* opCtx, std::size_t count) override;
private:
std::unique_ptr<OplogWriter> _targetOplogWriter;
};
} // namespace mongo
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