private async Task HandleMessageAsync(Message message, CancellationToken cancellationToken)
{
if (message == null)
{
Logger.LogWarning("Received message was null, skipping.");
return;
}
if (_isHostShuttingDown)
{
Logger.LogWarning("Abandoning message with ID '{MessageId}' as the host is shutting down.", message.MessageId);
await AbandonMessageAsync(message.SystemProperties.LockToken);
return;
}
try
{
if (String.IsNullOrEmpty(message.CorrelationId))
{
Logger.LogInformation("No operation ID was found on the message");
}
MessageCorrelationInfo correlationInfo = message.GetCorrelationInfo();
Logger.LogInformation(
"Received message '{MessageId}' (Transaction: {TransactionId}, Operation: {OperationId}, Cycle: {CycleId})",
message.MessageId, correlationInfo.TransactionId, correlationInfo.OperationId, correlationInfo.CycleId);
var messageContext = new AzureServiceBusMessageContext(message.MessageId, message.SystemProperties,
message.UserProperties);
// Deserialize the message
TMessage typedMessageBody = DeserializeJsonMessageBody(message.Body, messageContext);
// Process the message
// Note - We are not checking for exceptions here as the pump wil handle those and call our exception handling after which it abandons it
await ProcessMessageAsync(typedMessageBody, messageContext, correlationInfo, cancellationToken);
Logger.LogInformation("Message {MessageId} processed", message.MessageId);
}
catch (Exception ex)
{
await HandleReceiveExceptionAsync(ex);
}
}
private async Task ProcessMessageAsync(ProcessMessageEventArgs args)
{
ServiceBusReceivedMessage message = args?.Message;
if (message is null)
{
Logger.LogWarning("Received message on Azure Service Bus message pump '{JobId}' was null, skipping", JobId);
return;
}
if (_isHostShuttingDown)
{
Logger.LogWarning("Abandoning message with ID '{MessageId}' as the Azure Service Bus message pump is shutting down", message.MessageId);
await args.AbandonMessageAsync(message);
return;
}
if (String.IsNullOrEmpty(message.CorrelationId))
{
Logger.LogTrace("No operation ID was found on the message '{MessageId}' during processing in the Azure Service Bus message pump '{JobId}'", message.MessageId, JobId);
}
AzureServiceBusMessageContext messageContext = message.GetMessageContext(JobId);
MessageCorrelationInfo correlationInfo = message.GetCorrelationInfo(Settings.Options.Correlation?.TransactionIdPropertyName ?? PropertyNames.TransactionId);
ServiceBusReceiver receiver = args.GetServiceBusReceiver();
using (IServiceScope serviceScope = ServiceProvider.CreateScope())
{
var correlationInfoAccessor = serviceScope.ServiceProvider.GetService <ICorrelationInfoAccessor <MessageCorrelationInfo> >();
if (correlationInfoAccessor is null)
{
Logger.LogTrace("No message correlation configured in Azure Service Bus message pump '{JobId}' while processing message '{MessageId}'", JobId, message.MessageId);
await _messageRouter.RouteMessageAsync(receiver, args.Message, messageContext, correlationInfo, args.CancellationToken);
}
else
{
correlationInfoAccessor.SetCorrelationInfo(correlationInfo);
using (LogContext.Push(new MessageCorrelationInfoEnricher(correlationInfoAccessor)))
{
await _messageRouter.RouteMessageAsync(receiver, args.Message, messageContext, correlationInfo, args.CancellationToken);
}
}
}
}
