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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/repl/rollback_source_impl.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/repl/read_concern_args.h"
#include "mongo/db/repl/replication_auth.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/str.h"
namespace mongo {
namespace repl {
RollbackSourceImpl::RollbackSourceImpl(GetConnectionFn getConnection,
const HostAndPort& source,
const std::string& collectionName,
int batchSize)
: _getConnection(getConnection),
_source(source),
_collectionName(collectionName),
_oplog(source, getConnection, collectionName, batchSize) {}
const OplogInterface& RollbackSourceImpl::getOplog() const {
return _oplog;
}
const HostAndPort& RollbackSourceImpl::getSource() const {
return _source;
}
int RollbackSourceImpl::getRollbackId() const {
bo info;
_getConnection()->runCommand("admin", BSON("replSetGetRBID" << 1), info);
return info["rbid"].numberInt();
}
BSONObj RollbackSourceImpl::getLastOperation() const {
FindCommandRequest findCmd{NamespaceString{_collectionName}};
findCmd.setSort(BSON("$natural" << -1));
findCmd.setReadConcern(ReadConcernArgs::kImplicitDefault);
return _getConnection()->findOne(std::move(findCmd),
ReadPreferenceSetting{ReadPreference::SecondaryPreferred});
}
BSONObj RollbackSourceImpl::findOne(const NamespaceString& nss, const BSONObj& filter) const {
FindCommandRequest findCmd{nss};
findCmd.setFilter(filter);
findCmd.setReadConcern(ReadConcernArgs::kImplicitDefault);
return _getConnection()
->findOne(std::move(findCmd), ReadPreferenceSetting{ReadPreference::SecondaryPreferred})
.getOwned();
}
std::pair<BSONObj, NamespaceString> RollbackSourceImpl::findOneByUUID(const std::string& db,
UUID uuid,
const BSONObj& filter) const {
FindCommandRequest findRequest{NamespaceStringOrUUID{db, uuid}};
findRequest.setFilter(filter);
findRequest.setReadConcern(ReadConcernArgs::kImplicitDefault);
findRequest.setLimit(1);
findRequest.setSingleBatch(true);
auto cursor =
std::make_unique<DBClientCursor>(_getConnection(),
std::move(findRequest),
ReadPreferenceSetting{ReadPreference::SecondaryPreferred});
BSONObj result = cursor->more() ? cursor->nextSafe() : BSONObj{};
NamespaceString nss = cursor->getNamespaceString();
return {std::move(result), std::move(nss)};
}
StatusWith<BSONObj> RollbackSourceImpl::getCollectionInfoByUUID(const std::string& db,
const UUID& uuid) const {
std::list<BSONObj> info = _getConnection()->getCollectionInfos(db, BSON("info.uuid" << uuid));
if (info.empty()) {
return StatusWith<BSONObj>(ErrorCodes::NoSuchKey,
str::stream()
<< "No collection info found for collection with uuid: "
<< uuid.toString() << " in db: " << db);
}
invariant(info.size() == 1U);
return info.front();
}
StatusWith<BSONObj> RollbackSourceImpl::getCollectionInfo(const NamespaceString& nss) const {
std::list<BSONObj> info =
_getConnection()->getCollectionInfos(nss.db().toString(), BSON("name" << nss.coll()));
if (info.empty()) {
return StatusWith<BSONObj>(ErrorCodes::NoSuchKey,
str::stream() << "no collection info found: " << nss.ns());
}
invariant(info.size() == 1U);
return info.front();
}
} // namespace repl
} // namespace mongo
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