public int DoWork()
{
long nowMs = epochClock.Time();
if (cachedEpochClock.Time() != nowMs)
{
markFile.UpdateActivityTimestamp(nowMs);
cachedEpochClock.Update(nowMs);
}
int workCount = logAdapter.Poll();
if (0 == workCount)
{
if (logAdapter.Image().Closed)
{
throw new AgentTerminationException("Image closed unexpectedly");
}
if (!CommitPos.IsActive(aeron.CountersReader(), logAdapter.UpperBoundCounterId()))
{
throw new AgentTerminationException("Commit position is not active");
}
}
workCount += serviceControlAdapter.Poll();
if (activeLog != null)
{
// TODO: handle new log case
activeLog = null;
}
return(workCount);
}
private void JoinActiveLog(CountersReader counters)
{
AwaitActiveLog();
int commitPositionId = activeLog.commitPositionId;
if (!CommitPos.IsActive(counters, commitPositionId))
{
throw new InvalidOperationException("CommitPos counter not active: " + commitPositionId);
}
int logSessionId = activeLog.sessionId;
leadershipTermId = activeLog.leadershipTermId;
termBaseLogPosition = CommitPos.GetTermBaseLogPosition(counters, commitPositionId);
Subscription logSubscription = aeron.AddSubscription(activeLog.channel, activeLog.streamId);
if (activeLog.ackBeforeImage)
{
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
}
Image image = AwaitImage(logSessionId, logSubscription);
heartbeatCounter.SetOrdered(epochClock.Time());
if (!activeLog.ackBeforeImage)
{
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
}
logAdapter = new BoundedLogAdapter(image, new ReadableCounter(counters, commitPositionId), this);
activeLog = null;
}
private void SwitchActiveLog()
{
if (logAdapter.IsCaughtUp())
{
logAdapter.Dispose();
var counters = aeron.CountersReader();
var counterId = activeLog.commitPositionId;
leadershipTermId = activeLog.leadershipTermId;
termBaseLogPosition = CommitPos.GetTermBaseLogPosition(counters, counterId);
Subscription subscription = aeron.AddSubscription(activeLog.channel, activeLog.streamId);
Image image = AwaitImage(activeLog.sessionId, subscription);
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
logAdapter = new BoundedLogAdapter(image, new ReadableCounter(counters, counterId), this);
activeLog = null;
Role((ClusterRole)roleCounter.Get());
}
}
private void CheckForReplay(CountersReader counters, int recoveryCounterId)
{
long replayTermCount = RecoveryState.GetReplayTermCount(counters, recoveryCounterId);
if (0 == replayTermCount)
{
return;
}
service.OnReplayBegin();
for (int i = 0; i < replayTermCount; i++)
{
AwaitActiveLog();
int counterId = newActiveLogEvent.commitPositionId;
leadershipTermId = CommitPos.GetLeadershipTermId(counters, counterId);
termBaseLogPosition = CommitPos.GetTermBaseLogPosition(counters, counterId); // TODO MARK
if (CommitPos.GetLeadershipTermLength(counters, counterId) > 0)
{
using (Subscription subscription = aeron.AddSubscription(newActiveLogEvent.channel, newActiveLogEvent.streamId))
{
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
Image image = AwaitImage(newActiveLogEvent.sessionId, subscription);
ReadableCounter limit = new ReadableCounter(counters, counterId);
BoundedLogAdapter adapter = new BoundedLogAdapter(image, limit, this);
ConsumeImage(image, adapter);
termBaseLogPosition += image.Position();
}
}
newActiveLogEvent = null;
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.REPLAY);
}
service.OnReplayEnd();
}
private void JoinActiveLog()
{
CountersReader counters = aeron.CountersReader();
int commitPositionId = _activeLogEvent.commitPositionId;
if (!CommitPos.IsActive(counters, commitPositionId))
{
throw new ClusterException("CommitPos counter not active: " + commitPositionId);
}
Subscription logSubscription = aeron.AddSubscription(_activeLogEvent.channel, _activeLogEvent.streamId);
_consensusModuleProxy.Ack(CommitPos.GetLogPosition(counters, commitPositionId), ackId++, serviceId);
Image image = AwaitImage(_activeLogEvent.sessionId, logSubscription);
heartbeatCounter.SetOrdered(epochClock.Time());
_activeLogEvent = null;
logAdapter = new BoundedLogAdapter(image, new ReadableCounter(counters, commitPositionId), this);
Role((ClusterRole)roleCounter.Get());
foreach (ClientSession session in sessionByIdMap.Values)
{
if (ClusterRole.Leader == role)
{
if (ctx.IsRespondingService())
{
session.Connect(aeron);
}
session.ResetClosing();
}
else
{
session.Disconnect();
}
}
}
private void CheckForReplay(CountersReader counters, int recoveryCounterId)
{
if (RecoveryState.HasReplay(counters, recoveryCounterId))
{
AwaitActiveLog();
int counterId = _activeLogEvent.commitPositionId;
using (Subscription subscription = aeron.AddSubscription(_activeLogEvent.channel, _activeLogEvent.streamId))
{
_consensusModuleProxy.Ack(CommitPos.GetLogPosition(counters, counterId), ackId++, serviceId);
Image image = AwaitImage(_activeLogEvent.sessionId, subscription);
ReadableCounter limit = new ReadableCounter(counters, counterId);
BoundedLogAdapter adapter = new BoundedLogAdapter(image, limit, this);
ConsumeImage(image, adapter);
}
_activeLogEvent = null;
heartbeatCounter.SetOrdered(epochClock.Time());
}
}
private void JoinActiveLog(CountersReader counters)
{
AwaitActiveLog();
int commitPositionId = activeLog.commitPositionId;
if (!CommitPos.IsActive(counters, commitPositionId))
{
throw new System.InvalidOperationException("CommitPos counter not active: " + commitPositionId);
}
int logSessionId = activeLog.sessionId;
leadershipTermId = activeLog.leadershipTermId;
baseLogPosition = CommitPos.GetBaseLogPosition(counters, commitPositionId);
Subscription logSubscription = aeron.AddSubscription(activeLog.channel, activeLog.streamId);
Image image = AwaitImage(logSessionId, logSubscription);
serviceControlPublisher.AckAction(baseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
logAdapter = new BoundedLogAdapter(image, new ReadableCounter(counters, commitPositionId), this);
activeLog = null;
}
private void JoinActiveLog()
{
if (null != logAdapter)
{
if (!logAdapter.IsCaughtUp())
{
return;
}
logAdapter.Dispose();
logAdapter = null;
}
CountersReader counters = aeron.CountersReader();
int commitPositionId = newActiveLogEvent.commitPositionId;
if (!CommitPos.IsActive(counters, commitPositionId))
{
throw new System.InvalidOperationException("CommitPos counter not active: " + commitPositionId);
}
int logSessionId = newActiveLogEvent.sessionId;
leadershipTermId = newActiveLogEvent.leadershipTermId;
termBaseLogPosition = CommitPos.GetTermBaseLogPosition(counters, commitPositionId);
Subscription logSubscription = aeron.AddSubscription(newActiveLogEvent.channel, newActiveLogEvent.streamId);
if (newActiveLogEvent.ackBeforeImage)
{
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
}
Image image = AwaitImage(logSessionId, logSubscription);
heartbeatCounter.SetOrdered(epochClock.Time());
if (!newActiveLogEvent.ackBeforeImage)
{
serviceControlPublisher.AckAction(termBaseLogPosition, leadershipTermId, serviceId, ClusterAction.READY);
}
newActiveLogEvent = null;
logAdapter = new BoundedLogAdapter(image, new ReadableCounter(counters, commitPositionId), this);
Role((ClusterRole)roleCounter.Get());
foreach (ClientSession session in sessionByIdMap.Values)
{
if (ClusterRole.Leader == role)
{
session.Connect(aeron);
}
else
{
session.Disconnect();
}
}
}
public bool IsConsumed(CountersReader counters)
{
return(image.Position() >= CommitPos.GetMaxLogPosition(counters, upperBound.CounterId()));
}
