private async Task StopReceiveMessagesInternal(CancellationToken cancellationToken = default)
{
if (_serviceBusSubscriberProcessor != null)
{
try
{
await _serviceBusSubscriberProcessor.CloseAsync(cancellationToken);
await _serviceBusSubscriberProcessor.DisposeAsync();
}
catch (Exception ex)
{
_logger.LogError(ex, "Service Bus receive messages stopping failure");
}
finally
{
_serviceBusSubscriberProcessor = null;
}
}
}
public async Task StartReceiveMessages(
string queueOrTopicName,
string subscriptionName = default,
Func <string, string, object, Task> processMessageFunc = default,
Func <string, string, Exception, Task> processErrorFunc = default,
ServiceBusSubscriberReceiveOptions options = default,
CancellationToken cancellationToken = default)
{
if (_serviceBusSubscriberProcessor != null)
{
_logger.LogError("Service Bus processor already initialized. Stop it first");
throw new ServiceBusSubscriberOperationException(
"Service Bus processor already initialized. Stop it first.");
}
try
{
_serviceBusSubscriberProcessor =
new ServiceBusSubscriberProcessor(_client, queueOrTopicName, subscriptionName, options)
{
QueueOrTopicName = queueOrTopicName,
SubscriptionName = subscriptionName,
ClientProcessMessageFunc = processMessageFunc,
ClientProcessErrorFunc = processErrorFunc
};
_serviceBusSubscriberProcessor.ProcessMessageAsync += ProcessMessageInternal;
_serviceBusSubscriberProcessor.ProcessErrorAsync += ProcessErrorInternal;
await _serviceBusSubscriberProcessor.StartProcessingAsync(cancellationToken);
}
catch (Exception ex)
{
await StopReceiveMessagesInternal(cancellationToken);
_logger.LogError(ex, "Service Bus start receive messages from topic subscription failure");
throw new ServiceBusSubscriberOperationException(
"Service Bus start receive messages from topic subscription failure", ex);
}
}