/**
* Copyright (C) 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,b
* 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 .
*
* 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kReplication
#include "mongo/platform/basic.h"
#include
#include "mongo/db/repl/member_data.h"
#include "mongo/db/repl/rslog.h"
#include "mongo/util/log.h"
namespace mongo {
namespace repl {
MemberData::MemberData() : _health(-1), _authIssue(false), _configIndex(-1), _isSelf(false) {
_lastResponse.setState(MemberState::RS_UNKNOWN);
_lastResponse.setElectionTime(Timestamp());
_lastResponse.setAppliedOpTime(OpTime());
}
bool MemberData::setUpValues(Date_t now, ReplSetHeartbeatResponse&& hbResponse) {
_health = 1;
if (_upSince == Date_t()) {
_upSince = now;
}
_authIssue = false;
_lastHeartbeat = now;
_lastUpdate = now;
_lastUpdateStale = false;
_updatedSinceRestart = true;
if (!hbResponse.hasState()) {
hbResponse.setState(MemberState::RS_UNKNOWN);
}
if (!hbResponse.hasElectionTime()) {
hbResponse.setElectionTime(_lastResponse.getElectionTime());
}
if (!hbResponse.hasAppliedOpTime()) {
hbResponse.setAppliedOpTime(_lastResponse.getAppliedOpTime());
}
// Log if the state changes
if (_lastResponse.getState() != hbResponse.getState()) {
log() << "Member " << _hostAndPort.toString() << " is now in state "
<< hbResponse.getState().toString() << rsLog;
}
bool opTimeAdvanced = advanceLastAppliedOpTime(hbResponse.getAppliedOpTime(), now);
auto durableOpTime = hbResponse.hasDurableOpTime() ? hbResponse.getDurableOpTime() : OpTime();
opTimeAdvanced = advanceLastDurableOpTime(durableOpTime, now) || opTimeAdvanced;
_lastResponse = std::move(hbResponse);
return opTimeAdvanced;
}
void MemberData::setDownValues(Date_t now, const std::string& heartbeatMessage) {
_health = 0;
_upSince = Date_t();
_lastHeartbeat = now;
_authIssue = false;
_updatedSinceRestart = true;
if (_lastResponse.getState() != MemberState::RS_DOWN) {
log() << "Member " << _hostAndPort.toString() << " is now in state RS_DOWN" << rsLog;
}
_lastResponse = ReplSetHeartbeatResponse();
_lastResponse.setState(MemberState::RS_DOWN);
_lastResponse.setElectionTime(Timestamp());
_lastResponse.setAppliedOpTime(OpTime());
_lastResponse.setHbMsg(heartbeatMessage);
_lastResponse.setSyncingTo(HostAndPort());
// The _lastAppliedOpTime/_lastDurableOpTime fields don't get cleared merely by missing a
// heartbeat.
}
void MemberData::setAuthIssue(Date_t now) {
_health = 0; // set health to 0 so that this doesn't count towards majority.
_upSince = Date_t();
_lastHeartbeat = now;
_authIssue = true;
_updatedSinceRestart = true;
if (_lastResponse.getState() != MemberState::RS_UNKNOWN) {
log() << "Member " << _hostAndPort.toString()
<< " is now in state RS_UNKNOWN due to authentication issue." << rsLog;
}
_lastResponse = ReplSetHeartbeatResponse();
_lastResponse.setState(MemberState::RS_UNKNOWN);
_lastResponse.setElectionTime(Timestamp());
_lastResponse.setAppliedOpTime(OpTime());
_lastResponse.setHbMsg("");
_lastResponse.setSyncingTo(HostAndPort());
}
void MemberData::setLastAppliedOpTime(OpTime opTime, Date_t now) {
_lastUpdate = now;
_lastUpdateStale = false;
_lastAppliedOpTime = opTime;
}
void MemberData::setLastDurableOpTime(OpTime opTime, Date_t now) {
_lastUpdate = now;
_lastUpdateStale = false;
if (_lastAppliedOpTime < opTime) {
// TODO(russotto): We think this should never happen, rollback or no rollback. Make this an
// invariant and see what happens.
log() << "Durable progress (" << opTime << ") is ahead of the applied progress ("
<< _lastAppliedOpTime << ". This is likely due to a "
"rollback."
<< " memberid: " << _memberId << " rid: " << _rid << " host "
<< _hostAndPort.toString() << " previous durable progress: " << _lastDurableOpTime;
} else {
_lastDurableOpTime = opTime;
}
}
bool MemberData::advanceLastAppliedOpTime(OpTime opTime, Date_t now) {
_lastUpdate = now;
_lastUpdateStale = false;
if (_lastAppliedOpTime < opTime) {
setLastAppliedOpTime(opTime, now);
return true;
}
return false;
}
bool MemberData::advanceLastDurableOpTime(OpTime opTime, Date_t now) {
_lastUpdate = now;
_lastUpdateStale = false;
if (_lastDurableOpTime < opTime) {
setLastDurableOpTime(opTime, now);
return true;
}
return false;
}
} // namespace repl
} // namespace mongo