private IObservable <EventStreamTrackingPipelineState> ContinuousAllEventStreamsFromWithTracker(string trackerId)
{
if (trackerRepository == null)
{
throw new ArgumentNullException("trackerRepository");
}
return(Observable.Create <EventStreamTrackingPipelineState>(async observer =>
{
var tracker = await this.GetTrackerOrCreate(trackerId);
if (tracker.Type != CheckpointType.GlobalCheckpoint)
{
throw new EventStoreClientInvalidTrackerCheckpointException();
}
return EventStoreObservables.ContinuousAllEventStreamsFrom(this.Client, tracker.GlobalCheckpoint)
.Subscribe(revision =>
{
observer.OnNext(new EventStreamTrackingPipelineState
{
Tracker = tracker,
Revision = revision
});
},
observer.OnError,
observer.OnCompleted);
}));
}
private async Task ContinuouslyCatchUpAllEventStreams(GlobalCheckpoint initialCommit, Func <Revision, Task> handleRevision,
CancellationToken cancellationToken)
{
try
{
// Subscribe to all event streams and execute onNext action and save changes for each revision received
await(EventStoreObservables.ContinuousAllEventStreamsFrom(this.EventStreamReader, initialCommit)
.SelectFromAsync(handleRevision)
.RetryWithBackoffStrategy(retryCount: int.MaxValue, retryOnError: e => e is EventStreamTrackedReaderDbConcurrencyException)
.ToTask(cancellationToken));
}
catch (InvalidOperationException ex)
{
if (ex.HResult == -2146233079)
{
// TODO: Write to log instead of the console
Console.WriteLine(string.Format("An invalid operation exception has been thrown with code {0} when processing results from the server. Perhaps you are already up to date. Detailed error: {1}", ex.HResult, ex.Message));
}
else
{
throw ex;
}
}
}