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/**
* Copyright (C) 2021-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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/pipeline/change_stream_pre_image_helpers.h"
#include "mongo/base/error_codes.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/concurrency/lock_manager_defs.h"
#include "mongo/db/concurrency/locker.h"
#include "mongo/db/curop.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/util/assert_util.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kQuery
namespace mongo {
void writeToChangeStreamPreImagesCollection(OperationContext* opCtx,
const ChangeStreamPreImage& preImage) {
tassert(6646200,
"Expected to be executed in a write unit of work",
opCtx->lockState()->inAWriteUnitOfWork());
tassert(5869404,
str::stream() << "Invalid pre-image document applyOpsIndex: "
<< preImage.getId().getApplyOpsIndex(),
preImage.getId().getApplyOpsIndex() >= 0);
// This lock acquisition can block on a stronger lock held by another operation modifying
// the pre-images collection. There are no known cases where an operation holding an
// exclusive lock on the pre-images collection also waits for oplog visibility.
AllowLockAcquisitionOnTimestampedUnitOfWork allowLockAcquisition(opCtx->lockState());
AutoGetCollection preImagesCollectionRaii(
opCtx, NamespaceString::kChangeStreamPreImagesNamespace, LockMode::MODE_IX);
auto& changeStreamPreImagesCollection = preImagesCollectionRaii.getCollection();
tassert(6646201,
"The change stream pre-images collection is not present",
changeStreamPreImagesCollection);
// Inserts into the change stream pre-images collection are not replicated.
repl::UnreplicatedWritesBlock unreplicatedWritesBlock{opCtx};
const auto insertionStatus = changeStreamPreImagesCollection->insertDocument(
opCtx, InsertStatement{preImage.toBSON()}, &CurOp::get(opCtx)->debug());
tassert(5868601,
str::stream() << "Attempted to insert a duplicate document into the pre-images "
"collection. Pre-image id: "
<< preImage.getId().toBSON().toString(),
insertionStatus != ErrorCodes::DuplicateKey);
uassertStatusOK(insertionStatus);
}
} // namespace mongo
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