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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 "mongo/db/operation_context.h"
#include "mongo/db/repl/multiapplier.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/repl/oplog_entry.h"
namespace mongo {
/**
* Apply `commitTransaction` oplog entry.
*/
Status applyCommitTransaction(OperationContext* opCtx,
const repl::OplogEntry& entry,
repl::OplogApplication::Mode mode);
/**
* Apply `abortTransaction` oplog entry.
*/
Status applyAbortTransaction(OperationContext* opCtx,
const repl::OplogEntry& entry,
repl::OplogApplication::Mode mode);
/**
* Helper used to get previous oplog entry from the same transaction.
*/
const repl::OplogEntry getPreviousOplogEntry(OperationContext* opCtx,
const repl::OplogEntry& entry);
/**
* Follow an oplog chain and copy the operations to destination. Operations will be copied in
* forward oplog order (increasing optimes).
*/
std::vector<repl::OplogEntry> readTransactionOperationsFromOplogChain(
OperationContext* opCtx,
const repl::OplogEntry& entry,
const std::vector<repl::OplogEntry*>& cachedOps) noexcept;
/**
* Like readTransactionOperationsFromOplogChain, but also returns a boolean representing whether at
* least one of the transaction operations is a command.
*/
std::pair<std::vector<repl::OplogEntry>, bool>
readTransactionOperationsFromOplogChainAndCheckForCommands(
OperationContext* opCtx,
const repl::OplogEntry& lastEntryInTxn,
const std::vector<repl::OplogEntry*>& cachedOps) noexcept;
std::pair<std::vector<repl::OplogEntry>, bool> _readTransactionOperationsFromOplogChain(
OperationContext* opCtx,
const repl::OplogEntry& lastEntryInTxn,
const std::vector<repl::OplogEntry*>& cachedOps,
const bool checkForCommands) noexcept;
/**
* Apply `prepareTransaction` oplog entry.
*/
Status applyPrepareTransaction(OperationContext* opCtx,
const repl::OplogEntry& entry,
repl::OplogApplication::Mode mode);
/*
* Reconstruct prepared transactions by iterating over the transactions table to see which
* transactions should be in the prepared state, getting the corresponding oplog entry and applying
* the operations. Called at the end of rollback, startup recovery and initial sync.
*/
void reconstructPreparedTransactions(OperationContext* opCtx, repl::OplogApplication::Mode mode);
} // namespace mongo
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