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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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/rpc/metadata/oplog_query_metadata.h"
#include "mongo/bson/util/bson_check.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/repl/bson_extract_optime.h"
#include "mongo/rpc/metadata.h"
namespace mongo {
namespace rpc {
using repl::OpTime;
const char kOplogQueryMetadataFieldName[] = "$oplogQueryData";
namespace {
const char kLastOpCommittedFieldName[] = "lastOpCommitted";
const char kLastOpAppliedFieldName[] = "lastOpApplied";
const char kPrimaryIndexFieldName[] = "primaryIndex";
const char kSyncSourceIndexFieldName[] = "syncSourceIndex";
const char kRBIDFieldName[] = "rbid";
} // unnamed namespace
const int OplogQueryMetadata::kNoPrimary;
OplogQueryMetadata::OplogQueryMetadata(OpTime lastOpCommitted,
OpTime lastOpApplied,
int rbid,
int currentPrimaryIndex,
int currentSyncSourceIndex)
: _lastOpCommitted(std::move(lastOpCommitted)),
_lastOpApplied(std::move(lastOpApplied)),
_rbid(rbid),
_currentPrimaryIndex(currentPrimaryIndex),
_currentSyncSourceIndex(currentSyncSourceIndex) {}
StatusWith<OplogQueryMetadata> OplogQueryMetadata::readFromMetadata(const BSONObj& metadataObj) {
BSONElement oqMetadataElement;
Status status = bsonExtractTypedField(
metadataObj, rpc::kOplogQueryMetadataFieldName, Object, &oqMetadataElement);
if (!status.isOK())
return status;
BSONObj oqMetadataObj = oqMetadataElement.Obj();
long long primaryIndex;
status = bsonExtractIntegerField(oqMetadataObj, kPrimaryIndexFieldName, &primaryIndex);
if (!status.isOK())
return status;
long long syncSourceIndex;
status = bsonExtractIntegerField(oqMetadataObj, kSyncSourceIndexFieldName, &syncSourceIndex);
if (!status.isOK())
return status;
long long rbid;
status = bsonExtractIntegerField(oqMetadataObj, kRBIDFieldName, &rbid);
if (!status.isOK())
return status;
repl::OpTime lastOpCommitted;
status = bsonExtractOpTimeField(oqMetadataObj, kLastOpCommittedFieldName, &lastOpCommitted);
if (!status.isOK())
return status;
repl::OpTime lastOpApplied;
status = bsonExtractOpTimeField(oqMetadataObj, kLastOpAppliedFieldName, &lastOpApplied);
if (!status.isOK())
return status;
return OplogQueryMetadata(lastOpCommitted, lastOpApplied, rbid, primaryIndex, syncSourceIndex);
}
Status OplogQueryMetadata::writeToMetadata(BSONObjBuilder* builder) const {
BSONObjBuilder oqMetadataBuilder(builder->subobjStart(kOplogQueryMetadataFieldName));
_lastOpCommitted.append(&oqMetadataBuilder, kLastOpCommittedFieldName);
_lastOpApplied.append(&oqMetadataBuilder, kLastOpAppliedFieldName);
oqMetadataBuilder.append(kRBIDFieldName, _rbid);
oqMetadataBuilder.append(kPrimaryIndexFieldName, _currentPrimaryIndex);
oqMetadataBuilder.append(kSyncSourceIndexFieldName, _currentSyncSourceIndex);
oqMetadataBuilder.doneFast();
return Status::OK();
}
std::string OplogQueryMetadata::toString() const {
str::stream output;
output << "OplogQueryMetadata";
output << " Primary Index: " << _currentPrimaryIndex;
output << " Sync Source Index: " << _currentSyncSourceIndex;
output << " RBID: " << _rbid;
output << " Last Op Committed: " << _lastOpCommitted.toString();
output << " Last Op Applied: " << _lastOpApplied.toString();
return output;
}
} // namespace rpc
} // namespace mongo
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