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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/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"
#include "mongo/db/repl/bson_extract_optime.h"
namespace mongo {
namespace repl {
const char UpdatePositionArgs::kCommandFieldName[] = "replSetUpdatePosition";
const char UpdatePositionArgs::kUpdateArrayFieldName[] = "optimes";
const char UpdatePositionArgs::kAppliedOpTimeFieldName[] = "appliedOpTime";
const char UpdatePositionArgs::kAppliedWallTimeFieldName[] = "appliedWallTime";
const char UpdatePositionArgs::kDurableOpTimeFieldName[] = "durableOpTime";
const char UpdatePositionArgs::kDurableWallTimeFieldName[] = "durableWallTime";
const char UpdatePositionArgs::kMemberIdFieldName[] = "memberId";
const char UpdatePositionArgs::kConfigVersionFieldName[] = "cfgver";
UpdatePositionArgs::UpdateInfo::UpdateInfo(const OpTime& applied,
const Date_t& appliedWall,
const OpTime& durable,
const Date_t& durableWall,
long long aCfgver,
long long aMemberId)
: appliedOpTime(applied),
appliedWallTime(appliedWall),
durableOpTime(durable),
durableWallTime(durableWall),
cfgver(aCfgver),
memberId(aMemberId) {}
Status UpdatePositionArgs::initialize(const BSONObj& argsObj, bool requireWallTime) {
// grab the array of changes
BSONElement updateArray;
Status 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();
OpTime appliedOpTime;
status = bsonExtractOpTimeField(entry, kAppliedOpTimeFieldName, &appliedOpTime);
if (!status.isOK())
return status;
Date_t appliedWallTime = Date_t();
BSONElement appliedWallTimeElement;
status = bsonExtractTypedField(
entry, kAppliedWallTimeFieldName, BSONType::Date, &appliedWallTimeElement);
if (!status.isOK() && (status != ErrorCodes::NoSuchKey || requireWallTime))
return status;
if (status.isOK())
appliedWallTime = appliedWallTimeElement.Date();
Date_t durableWallTime = Date_t();
BSONElement durableWallTimeElement;
status = bsonExtractTypedField(
entry, kDurableWallTimeFieldName, BSONType::Date, &durableWallTimeElement);
if (!status.isOK() && (status != ErrorCodes::NoSuchKey || requireWallTime))
return status;
if (status.isOK())
durableWallTime = durableWallTimeElement.Date();
OpTime durableOpTime;
status = bsonExtractOpTimeField(entry, kDurableOpTimeFieldName, &durableOpTime);
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;
long long memberID;
status = bsonExtractIntegerFieldWithDefault(entry, kMemberIdFieldName, -1, &memberID);
if (!status.isOK())
return status;
_updates.push_back(UpdateInfo(
appliedOpTime, appliedWallTime, durableOpTime, durableWallTime, 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) {
BSONObjBuilder updateEntry(updateArray.subobjStart());
updateEntry.append(kConfigVersionFieldName, update->cfgver);
updateEntry.append(kMemberIdFieldName, update->memberId);
update->durableOpTime.append(&updateEntry, kDurableOpTimeFieldName);
update->appliedOpTime.append(&updateEntry, kAppliedOpTimeFieldName);
}
updateArray.doneFast();
}
return builder.obj();
}
} // namespace repl
} // namespace mongo
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