private void AddSubscriber(Guid publishWithCorrelationId, IReaderSubscription subscription)
{
// _logger.Trace(
// "The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId,
// _eventReaderId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
}
private bool DispatchRecentMessagesTo(IReaderSubscription subscription, long fromTransactionFilePosition)
{
foreach (var m in _lastMessages)
{
if (m.Position.CommitPosition >= fromTransactionFilePosition)
{
try {
m.Handle(subscription);
} catch (Exception ex) {
var item = m as CommittedEventItem;
string message;
if (item != null)
{
message = string.Format(
"The heading subscription failed to handle a recently cached event {0}:{1}@{2} because {3}",
item.Message.Data.EventStreamId, item.Message.Data.EventType,
item.Message.Data.PositionSequenceNumber, ex.Message);
}
else
{
message = string.Format(
"The heading subscription failed to handle a recently cached deleted event at position {0} because {1}",
m.Position, ex.Message);
}
_publisher.Publish(
new EventReaderSubscriptionMessage.Failed(subscription.SubscriptionId, message));
return(false);
}
}
}
return(true);
}
public void setup()
{
_checkpointUnhandledBytesThreshold = 1000;
_checkpointProcessedEventsThreshold = 2000;
Given();
_bus = new InMemoryBus("bus");
_projectionCorrelationId = Guid.NewGuid();
_eventHandler = new TestHandler<EventReaderSubscriptionMessage.CommittedEventReceived>();
_checkpointHandler = new TestHandler<EventReaderSubscriptionMessage.CheckpointSuggested>();
_progressHandler = new TestHandler<EventReaderSubscriptionMessage.ProgressChanged>();
_subscriptionStartedHandler = new TestHandler<EventReaderSubscriptionMessage.SubscriptionStarted>();
_notAuthorizedHandler = new TestHandler<EventReaderSubscriptionMessage.NotAuthorized>();
_eofHandler = new TestHandler<EventReaderSubscriptionMessage.EofReached>();
_partitionEofHandler = new TestHandler<EventReaderSubscriptionMessage.PartitionEofReached>();
_partitionMeasuredHandler = new TestHandler<EventReaderSubscriptionMessage.PartitionMeasured>();
_bus.Subscribe(_eventHandler);
_bus.Subscribe(_checkpointHandler);
_bus.Subscribe(_progressHandler);
_bus.Subscribe(_eofHandler);
_bus.Subscribe(_partitionEofHandler);
_bus.Subscribe(_partitionMeasuredHandler);
_readerStrategy = CreateCheckpointStrategy();
_subscription = CreateProjectionSubscription();
When();
}
public void setup()
{
_checkpointUnhandledBytesThreshold = 1000;
_checkpointProcessedEventsThreshold = 2000;
_checkpointAfterMs = 10000;
_timeProvider = new RealTimeProvider();
Given();
_bus = new InMemoryBus("bus");
_projectionCorrelationId = Guid.NewGuid();
_eventHandler = new TestHandler <EventReaderSubscriptionMessage.CommittedEventReceived>();
_checkpointHandler = new TestHandler <EventReaderSubscriptionMessage.CheckpointSuggested>();
_progressHandler = new TestHandler <EventReaderSubscriptionMessage.ProgressChanged>();
_subscriptionStartedHandler = new TestHandler <EventReaderSubscriptionMessage.SubscriptionStarted>();
_notAuthorizedHandler = new TestHandler <EventReaderSubscriptionMessage.NotAuthorized>();
_eofHandler = new TestHandler <EventReaderSubscriptionMessage.EofReached>();
_partitionEofHandler = new TestHandler <EventReaderSubscriptionMessage.PartitionEofReached>();
_partitionMeasuredHandler = new TestHandler <EventReaderSubscriptionMessage.PartitionMeasured>();
_partitionDeletedHandler = new TestHandler <EventReaderSubscriptionMessage.PartitionDeleted>();
_bus.Subscribe(_eventHandler);
_bus.Subscribe(_checkpointHandler);
_bus.Subscribe(_progressHandler);
_bus.Subscribe(_eofHandler);
_bus.Subscribe(_partitionEofHandler);
_bus.Subscribe(_partitionMeasuredHandler);
_readerStrategy = CreateCheckpointStrategy();
_subscription = CreateProjectionSubscription();
When();
}
private void DispatchRecentMessagesTo(IReaderSubscription subscription, long fromTransactionFilePosition)
{
foreach (var m in _lastMessages)
{
if (m.Position.CommitPosition >= fromTransactionFilePosition)
{
m.Handle(subscription);
}
}
}
private void AddSubscriber(Guid publishWithCorrelationId, IReaderSubscription subscription)
{
_logger.Trace(
"The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId,
_eventReaderId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
if (_headEventReaderPaused)
{
_headEventReaderPaused = false;
//_headEventReader.Resume();
}
}
public bool TrySubscribe(
Guid projectionId, IReaderSubscription readerSubscription, long fromTransactionFilePosition)
{
EnsureStarted();
if (_headSubscribers.ContainsKey(projectionId))
{
throw new InvalidOperationException(
string.Format("Projection '{0}' has been already subscribed", projectionId));
}
if (_subscribeFromPosition.CommitPosition <= fromTransactionFilePosition)
{
if (!DispatchRecentMessagesTo(readerSubscription, fromTransactionFilePosition))
{
return(false);
}
AddSubscriber(projectionId, readerSubscription);
return(true);
}
return(false);
}
public bool TrySubscribe(
Guid projectionId, IReaderSubscription readerSubscription, 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(readerSubscription, fromTransactionFilePosition);
AddSubscriber(projectionId, readerSubscription);
return(true);
}
return(false);
}
public abstract void Handle(IReaderSubscription subscription);
private void AddSubscriber(Guid publishWithCorrelationId, IReaderSubscription subscription)
{
_logger.Trace(
"The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId,
_eventReaderId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
if (_headEventReaderPaused)
{
_headEventReaderPaused = false;
//_headEventReader.Resume();
}
}
public bool TrySubscribe(
Guid projectionId, IReaderSubscription readerSubscription, 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(readerSubscription, fromTransactionFilePosition);
AddSubscriber(projectionId, readerSubscription);
return true;
}
return false;
}
public override void Handle(IReaderSubscription subscription)
{
subscription.Handle(Message);
}
public abstract void Handle(IReaderSubscription subscription);
private void DispatchRecentMessagesTo(IReaderSubscription subscription, long fromTransactionFilePosition)
{
foreach (var m in _lastMessages)
if (m.Position.CommitPosition >= fromTransactionFilePosition)
m.Handle(subscription);
}
private void AddSubscriber(Guid publishWithCorrelationId, IReaderSubscription subscription)
{
_headSubscribers.Add(publishWithCorrelationId, subscription);
}
public override void Handle(IReaderSubscription subscription)
{
subscription.Handle(Message);
}
private void AddSubscriber(Guid publishWithCorrelationId, IReaderSubscription subscription)
{
// _logger.Trace(
// "The '{0}' projection subscribed to the '{1}' heading distribution point", publishWithCorrelationId,
// _eventReaderId);
_headSubscribers.Add(publishWithCorrelationId, subscription);
}
