protected override async Task OnOpenAsync()
{
bool openedOK = false;
int retryCount = 0;
Exception lastException = null;
do
{
try
{
await OpenClientsAsync().ConfigureAwait(false);
openedOK = true;
}
catch (Exception e)
{
lastException = e;
ProcessorEventSource.Log.PartitionPumpWarning(
this.Host.HostName, this.PartitionContext.PartitionId, "Failure creating client or receiver, retrying", e.ToString());
// Don't retry if we already lost the lease.
if (e is ReceiverDisconnectedException)
{
break;
}
retryCount++;
}
}while (!openedOK && (retryCount < 5));
if (!openedOK)
{
// IEventProcessor.onOpen is called from the base PartitionPump and must have returned in order for execution to reach here,
// so we can report this error to it instead of the general error handler.
await this.Processor.ProcessErrorAsync(this.PartitionContext, lastException).ConfigureAwait(false);
this.PumpStatus = PartitionPumpStatus.OpenFailed;
}
if (this.PumpStatus == PartitionPumpStatus.Opening)
{
this.partitionReceiveHandler = new PartitionReceiveHandler(this);
// IEventProcessor.OnOpen is called from the base PartitionPump and must have returned in order for execution to reach here,
// meaning it is safe to set the handler and start calling IEventProcessor.OnEvents.
// Set the status to running before setting the client handler, so the IEventProcessor.OnEvents can never race and see status != running.
this.PumpStatus = PartitionPumpStatus.Running;
this.partitionReceiver.SetReceiveHandler(
this.partitionReceiveHandler,
this.Host.EventProcessorOptions.InvokeProcessorAfterReceiveTimeout);
}
if (this.PumpStatus == PartitionPumpStatus.OpenFailed)
{
this.PumpStatus = PartitionPumpStatus.Closing;
await this.CleanUpClientsAsync().ConfigureAwait(false);
this.PumpStatus = PartitionPumpStatus.Closed;
}
}
protected override async Task OnOpenAsync()
{
bool openedOK = false;
int retryCount = 0;
Exception lastException = null;
do
{
try
{
await OpenClientsAsync().ConfigureAwait(false);
openedOK = true;
}
catch (Exception e)
{
lastException = e;
if (e is ReceiverDisconnectedException)
{
// TODO Assuming this is due to a receiver with a higher epoch.
// Is there a way to be sure without checking the exception text?
ProcessorEventSource.Log.PartitionPumpWarning(
this.Host.Id, this.PartitionContext.PartitionId, "Receiver disconnected on create, bad epoch?", e.ToString());
// If it's a bad epoch, then retrying isn't going to help.
break;
}
else
{
ProcessorEventSource.Log.PartitionPumpWarning(
this.Host.Id, this.PartitionContext.PartitionId, "Failure creating client or receiver, retrying", e.ToString());
retryCount++;
}
}
}while (!openedOK && (retryCount < 5));
if (!openedOK)
{
// IEventProcessor.onOpen is called from the base PartitionPump and must have returned in order for execution to reach here,
// so we can report this error to it instead of the general error handler.
await this.Processor.ProcessErrorAsync(this.PartitionContext, lastException).ConfigureAwait(false);
this.PumpStatus = PartitionPumpStatus.OpenFailed;
}
if (this.PumpStatus == PartitionPumpStatus.Opening)
{
this.partitionReceiveHandler = new PartitionReceiveHandler(this);
// IEventProcessor.OnOpen is called from the base PartitionPump and must have returned in order for execution to reach here,
// meaning it is safe to set the handler and start calling IEventProcessor.OnEvents.
// Set the status to running before setting the client handler, so the IEventProcessor.OnEvents can never race and see status != running.
this.PumpStatus = PartitionPumpStatus.Running;
this.partitionReceiver.SetReceiveHandler(this.partitionReceiveHandler);
}
if (this.PumpStatus == PartitionPumpStatus.OpenFailed)
{
this.PumpStatus = PartitionPumpStatus.Closing;
await this.CleanUpClientsAsync();
this.PumpStatus = PartitionPumpStatus.Closed;
}
}
