Status ReplicationCoordinatorImpl::setLastOptime(OperationContext* txn,
const OID& rid,
const OpTime& ts) {
boost::lock_guard<boost::mutex> lk(_mutex);
OpTime& slaveOpTime = _slaveInfoMap[rid].opTime;
if (slaveOpTime < ts) {
slaveOpTime = ts;
// TODO(spencer): update write concern tags if we're a replSet
// Wake up any threads waiting for replication that now have their replication
// check satisfied
for (std::vector<WaiterInfo*>::iterator it = _replicationWaiterList.begin();
it != _replicationWaiterList.end(); ++it) {
WaiterInfo* info = *it;
if (_opReplicatedEnough_inlock(*info->opTime, *info->writeConcern)) {
info->condVar->notify_all();
}
}
}
if (_getReplicationMode_inlock() == modeReplSet &&
!_getCurrentMemberState_inlock().primary()) {
// pass along if we are not primary
_externalState->forwardSlaveProgress();
}
return Status::OK();
}
ReplicationCoordinator::StatusAndDuration ReplicationCoordinatorImpl::awaitReplication(
const OperationContext* txn,
const OpTime& opId,
const WriteConcernOptions& writeConcern) {
// TODO(spencer): handle killop
if (writeConcern.wNumNodes <= 1 && writeConcern.wMode.empty()) {
// no desired replication check
return StatusAndDuration(Status::OK(), Milliseconds(0));
}
Timer timer;
boost::unique_lock<boost::mutex> lk(_mutex);
const Mode replMode = _getReplicationMode_inlock();
if (replMode == modeNone || serverGlobalParams.configsvr) {
// no replication check needed (validated above)
return StatusAndDuration(Status::OK(), Milliseconds(0));
}
if (writeConcern.wMode == "majority" && replMode == modeMasterSlave) {
// with master/slave, majority is equivalent to w=1
return StatusAndDuration(Status::OK(), Milliseconds(0));
}
boost::condition_variable condVar;
// Must hold _mutex before constructing waitInfo as it will modify _replicationWaiterList
WaiterInfo waitInfo(&_replicationWaiterList, &opId, &writeConcern, &condVar);
while (!_opReplicatedEnough_inlock(opId, writeConcern)) {
const int elapsed = timer.millis();
if (writeConcern.wTimeout != WriteConcernOptions::kNoTimeout &&
elapsed > writeConcern.wTimeout) {
return StatusAndDuration(Status(ErrorCodes::ExceededTimeLimit,
"waiting for replication timed out"),
Milliseconds(elapsed));
}
if (_inShutdown) {
return StatusAndDuration(Status(ErrorCodes::ShutdownInProgress,
"Replication is being shut down"),
Milliseconds(elapsed));
}
try {
if (writeConcern.wTimeout == WriteConcernOptions::kNoTimeout) {
condVar.wait(lk);
}
else {
condVar.timed_wait(lk, Milliseconds(writeConcern.wTimeout - elapsed));
}
} catch (const boost::thread_interrupted&) {}
}
return StatusAndDuration(Status::OK(), Milliseconds(timer.millis()));
}
Status ReplicationCoordinatorImpl::setLastOptime(const OID& rid,
const OpTime& ts) {
// TODO(spencer): update slave tracking thread for local.slaves
// TODO(spencer): pass info upstream if we're not primary
boost::lock_guard<boost::mutex> lk(_mutex);
OpTime& slaveOpTime = _slaveOpTimeMap[rid];
if (slaveOpTime < ts) {
slaveOpTime = ts;
// TODO(spencer): update write concern tags if we're a replSet
// Wake up any threads waiting for replication that now have their replication
// check satisfied
for (std::vector<WaiterInfo*>::iterator it = _replicationWaiterList.begin();
it != _replicationWaiterList.end(); ++it) {
WaiterInfo* info = *it;
if (_opReplicatedEnough_inlock(*info->opTime, *info->writeConcern)) {
info->condVar->notify_all();
}
}
}
return Status::OK();
}