private void AddSubscriber(Guid publishWithCorrelationId, IProjectionSubscription subscription)
{
_logger.Trace("The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId, _distributionPointId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
if (_headDistributionPointPaused)
{
_headDistributionPointPaused = false;
_headDistributionPoint.Resume();
}
}
public void setup()
{
_checkpointUnhandledBytesThreshold = 1000;
Given();
_bus = new FakePublisher();
_projectionCorrelationId = Guid.NewGuid();
_eventHandler = new TestHandler<ProjectionSubscriptionMessage.CommittedEventReceived>();
_checkpointHandler = new TestHandler<ProjectionSubscriptionMessage.CheckpointSuggested>();
_progressHandler = new TestHandler<ProjectionSubscriptionMessage.ProgressChanged>();
_eofHandler = new TestHandler<ProjectionSubscriptionMessage.EofReached>();
_checkpointStrategy = CreateCheckpointStrategy();
_subscription = CreateProjectionSubscription();
When();
}
public bool TrySubscribe(
Guid projectionId, IProjectionSubscription projectionSubscription, CheckpointTag fromCheckpointTag)
{
EnsureStarted();
if (_headSubscribers.ContainsKey(projectionId))
{
throw new InvalidOperationException(
string.Format("Projection '{0}' has been already subscribed", projectionId));
}
if (projectionSubscription.CanJoinAt(_subscribeFromPosition, fromCheckpointTag))
{
_logger.Trace("The '{0}' subscription has joined the heading distribution point at '{1}'", projectionId, fromCheckpointTag);
DispatchRecentMessagesTo(projectionSubscription);
AddSubscriber(projectionId, projectionSubscription);
return(true);
}
return(false);
}
public bool TrySubscribe(
Guid projectionId, IProjectionSubscription projectionSubscription, long fromTransactionFilePosition)
{
EnsureStarted();
if (_headSubscribers.ContainsKey(projectionId))
{
throw new InvalidOperationException(
string.Format("Projection '{0}' has been already subscribed", projectionId));
}
// if first available event commit position is before the safe TF (prepare) position - join
if (_subscribeFromPosition.CommitPosition <= fromTransactionFilePosition)
{
_logger.Trace("The '{0}' subscription has joined the heading distribution point at '{1}'", projectionId, fromTransactionFilePosition);
DispatchRecentMessagesTo(projectionSubscription);
AddSubscriber(projectionId, projectionSubscription);
return(true);
}
return(false);
}
private void AddSubscriber(Guid publishWithCorrelationId, IProjectionSubscription subscription)
{
_logger.Trace("The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId, _distributionPointId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
if (_headDistributionPointPaused)
{
_headDistributionPointPaused = false;
_headDistributionPoint.Resume();
}
}
public bool TrySubscribe(
Guid projectionId, IProjectionSubscription projectionSubscription, long fromTransactionFilePosition)
{
EnsureStarted();
if (_headSubscribers.ContainsKey(projectionId))
throw new InvalidOperationException(
string.Format("Projection '{0}' has been already subscribed", projectionId));
// if first available event commit position is before the safe TF (prepare) position - join
if (_subscribeFromPosition.CommitPosition <= fromTransactionFilePosition)
{
_logger.Trace("The '{0}' subscription has joined the heading distribution point at '{1}'", projectionId, fromTransactionFilePosition);
DispatchRecentMessagesTo(projectionSubscription);
AddSubscriber(projectionId, projectionSubscription);
return true;
}
return false;
}
public bool TrySubscribe(
Guid projectionId, IProjectionSubscription projectionSubscription, CheckpointTag fromCheckpointTag)
{
EnsureStarted();
if (_headSubscribers.ContainsKey(projectionId))
throw new InvalidOperationException(
string.Format("Projection '{0}' has been already subscribed", projectionId));
if (projectionSubscription.CanJoinAt(_subscribeFromPosition, fromCheckpointTag))
{
_logger.Trace("The '{0}' subscription has joined the heading distribution point at '{1}'", projectionId, fromCheckpointTag);
DispatchRecentMessagesTo(projectionSubscription);
AddSubscriber(projectionId, projectionSubscription);
return true;
}
return false;
}
