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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/cloner.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/repl/oplogreader.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/mongoutils/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()->simpleCommand("admin", &info, "replSetGetRBID");
return info["rbid"].numberInt();
}
BSONObj RollbackSourceImpl::getLastOperation() const {
const Query query = Query().sort(BSON("$natural" << -1));
return _getConnection()->findOne(_collectionName, query, 0, QueryOption_SlaveOk);
}
BSONObj RollbackSourceImpl::findOne(const NamespaceString& nss, const BSONObj& filter) const {
return _getConnection()->findOne(nss.toString(), filter, NULL, QueryOption_SlaveOk).getOwned();
}
std::pair<BSONObj, NamespaceString> RollbackSourceImpl::findOneByUUID(const std::string& db,
UUID uuid,
const BSONObj& filter) const {
return _getConnection()->findOneByUUID(db, uuid, filter);
}
void RollbackSourceImpl::copyCollectionFromRemote(OperationContext* opCtx,
const NamespaceString& nss) const {
std::string errmsg;
auto tmpConn = stdx::make_unique<DBClientConnection>();
uassert(15908,
errmsg,
tmpConn->connect(_source, StringData(), errmsg) && replAuthenticate(tmpConn.get()));
// cloner owns _conn in unique_ptr
Cloner cloner;
cloner.setConnection(std::move(tmpConn));
uassert(15909,
str::stream() << "replSet rollback error resyncing collection " << nss.ns() << ' '
<< errmsg,
cloner.copyCollection(
opCtx, nss.ns(), BSONObj(), errmsg, true, CollectionOptions::parseForStorage));
}
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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