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/**
* Copyright 2014 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/platform/basic.h"
#include "mongo/db/repl/update_position_args.h"
#include "mongo/base/status.h"
#include "mongo/bson/util/bson_check.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/db/jsobj.h"
namespace mongo {
namespace repl {
UpdatePositionArgs::UpdateInfo::UpdateInfo(const OID& anRid,
const OpTime& aTs,
long long aCfgver,
long long aMemberId)
: rid(anRid), ts(aTs), cfgver(aCfgver), memberId(aMemberId) {}
namespace {
const std::string kCommandFieldName = "replSetUpdatePosition";
const std::string kUpdateArrayFieldName = "optimes";
const std::string kLegalUpdatePositionFieldNames[] = {
kCommandFieldName, kUpdateArrayFieldName,
};
const std::string kMemberRIDFieldName = "_id";
const std::string kMemberConfigFieldName = "config";
const std::string kOpTimeFieldName = "optime";
const std::string kMemberIdFieldName = "memberId";
const std::string kConfigVersionFieldName = "cfgver";
const std::string kLegalUpdateInfoFieldNames[] = {
kMemberConfigFieldName,
kMemberRIDFieldName,
kOpTimeFieldName,
kMemberIdFieldName,
kConfigVersionFieldName,
};
} // namespace
Status UpdatePositionArgs::initialize(const BSONObj& argsObj) {
Status status =
bsonCheckOnlyHasFields("UpdatePositionArgs", argsObj, kLegalUpdatePositionFieldNames);
if (!status.isOK())
return status;
// grab the array of changes
BSONElement updateArray;
status = bsonExtractTypedField(argsObj, kUpdateArrayFieldName, Array, &updateArray);
if (!status.isOK())
return status;
// now parse each array entry into an update
BSONObjIterator i(updateArray.Obj());
while (i.more()) {
BSONObj entry = i.next().Obj();
status = bsonCheckOnlyHasFields("UpdateInfoArgs", entry, kLegalUpdateInfoFieldNames);
if (!status.isOK())
return status;
OpTime opTime;
if (entry[kOpTimeFieldName].isABSONObj()) {
// In protocol version 1, { ts: <timestamp>, t: term }
Status status = bsonExtractOpTimeField(entry, kOpTimeFieldName, &opTime);
if (!status.isOK())
return status;
} else {
Timestamp ts;
status = bsonExtractTimestampField(entry, kOpTimeFieldName, &ts);
if (!status.isOK())
return status;
opTime = OpTime(ts, OpTime::kUninitializedTerm);
}
if (!status.isOK())
return status;
// TODO(spencer): The following three fields are optional in 3.0, but should be made
// required or ignored in 3.0
long long cfgver;
status = bsonExtractIntegerFieldWithDefault(entry, kConfigVersionFieldName, -1, &cfgver);
if (!status.isOK())
return status;
OID rid;
status = bsonExtractOIDFieldWithDefault(entry, kMemberRIDFieldName, OID(), &rid);
if (!status.isOK())
return status;
long long memberID;
status = bsonExtractIntegerFieldWithDefault(entry, kMemberIdFieldName, -1, &memberID);
if (!status.isOK())
return status;
_updates.push_back(UpdateInfo(rid, opTime, cfgver, memberID));
}
return Status::OK();
}
BSONObj UpdatePositionArgs::toBSON() const {
BSONObjBuilder builder;
// add command name
builder.append(kCommandFieldName, 1);
// build array of updates
if (!_updates.empty()) {
BSONArrayBuilder updateArray(builder.subarrayStart(kUpdateArrayFieldName));
for (UpdatePositionArgs::UpdateIterator update = updatesBegin(); update != updatesEnd();
++update) {
updateArray.append(BSON(kMemberRIDFieldName << update->rid << kOpTimeFieldName
<< update->ts.getTimestamp()
<< kConfigVersionFieldName << update->cfgver
<< kMemberIdFieldName << update->memberId));
}
updateArray.doneFast();
}
return builder.obj();
}
} // namespace repl
} // namespace mongo
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