public async Task StartAsync(CancellationToken cancellationToken)
{
_cancellationToken = cancellationToken;
_client = await _clientFactory.GetQueueClient <T>().ConfigureAwait(false);
if (!await _managementClient.QueueExistsAsync(_client.QueueName, _cancellationToken).ConfigureAwait(false))
{
try
{
var serviceBusCreationOptions = GetServiceBusCreationOptions();
await _managementClient.CreateQueueAsync(new QueueDescription(_client.Path)
{
EnableBatchedOperations = serviceBusCreationOptions.EnableBatchedOperations,
EnablePartitioning = serviceBusCreationOptions.EnablePartitioning,
}, _cancellationToken).ConfigureAwait(false);
}
catch (ServiceBusException e)
{
_log.Error(e, "Failed to create queue {QueueName}", _client.QueueName);
throw;
}
}
_deadLetterLimit = Settings.DeadLetterDeliveryLimit;
_client.PrefetchCount = Settings.PrefetchCount;
_messageReceiver = new StoppableMessageReceiver(_client.ServiceBusConnection, _client.QueueName, ReceiveMode.PeekLock, null, Settings.PrefetchCount);
var options = new StoppableMessageReceiver.MessageHandlerOptions(OnExceptionReceivedAsync)
{
AutoComplete = false,
MaxAutoRenewDuration = Settings.MessageLockTimeout,
MaxConcurrentCalls = Settings.MaxConcurrentCalls
};
_messageReceiver.RegisterStoppableMessageHandler(options, Handler);
#pragma warning disable 4014
// ReSharper disable once MethodSupportsCancellation
Task.Run(() =>
{
_cancellationToken.WaitHandle.WaitOne();
//Cancellation requested
try
{
_log.Information($"Closing ServiceBus channel receiver for {typeof(T).Name}");
_messageReceiver.StopPump();
}
catch (Exception)
{
//Swallow
}
});
#pragma warning restore 4014
}
public async Task StartAsync(CancellationToken cancellationToken)
{
_cancellationToken = cancellationToken;
_client = await _clientFactory.GetSubscriptionClient <TTopic, IEventSubscription <TTopic> >(_subscription).ConfigureAwait(false);
if (!await _managementClient.TopicExistsAsync(_client.TopicPath, cancellationToken).ConfigureAwait(false))
{
try
{
var serviceBusCreationOptions = GetServiceBusCreationOptions();
await _managementClient.CreateTopicAsync(new TopicDescription(_client.TopicPath)
{
EnableBatchedOperations = serviceBusCreationOptions.EnableBatchedOperations,
EnablePartitioning = serviceBusCreationOptions.EnablePartitioning,
SupportOrdering = serviceBusCreationOptions.SupportOrdering
}, cancellationToken).ConfigureAwait(false);
}
catch (ServiceBusException e)
{
_log.Error(e, "Failed to create topic {TopicName}", _client.TopicPath);
throw;
}
}
if (!await _managementClient.SubscriptionExistsAsync(_client.TopicPath, _client.SubscriptionName, cancellationToken).ConfigureAwait(false))
{
try
{
var serviceBusCreationOptions = GetServiceBusCreationOptions();
await _managementClient.CreateSubscriptionAsync(new SubscriptionDescription(_client.TopicPath, _client.SubscriptionName)
{
EnableBatchedOperations = serviceBusCreationOptions.EnableBatchedOperations,
}, cancellationToken).ConfigureAwait(false);
}
catch (ServiceBusException e)
{
_log.Error(e, "Failed to create subscription {TopicName} {SubscriptionName}", _client.TopicPath, _client.SubscriptionName);
throw;
}
}
_deadLetterLimit = Settings.DeadLetterDeliveryLimit;
_client.PrefetchCount = Settings.PrefetchCount;
_messageReceiver = new StoppableMessageReceiver(_client.ServiceBusConnection, EntityNameHelper.FormatSubscriptionPath(_client.TopicPath, _client.SubscriptionName), ReceiveMode.PeekLock, RetryPolicy.Default, Settings.PrefetchCount);
var options = new StoppableMessageReceiver.MessageHandlerOptions(OnExceptionReceivedAsync)
{
AutoComplete = false,
MaxAutoRenewDuration = Settings.MessageLockTimeout,
MaxConcurrentCalls = Settings.MaxConcurrentCalls
};
_messageReceiver.RegisterStoppableMessageHandler(options, OnMessageAsync);
#pragma warning disable 4014
// ReSharper disable once MethodSupportsCancellation
Task.Run(() =>
{
_cancellationToken.WaitHandle.WaitOne();
//Cancellation requested
try
{
_log.Information($"Closing ServiceBus channel receiver for {typeof(TTopic).Name}");
_messageReceiver.StopPump();
}
catch (Exception)
{
//Swallow
}
});
#pragma warning restore 4014
}
