private static void CreateErrorContextFromHeaders(MessageBrokerContext messageContext, InboundBrokeredMessage inboundMessage)
{
if (inboundMessage.IsError)
{
inboundMessage.ApplicationProperties.TryGetValue(ApplicationProperties.FailureDetails, out var reason);
inboundMessage.ApplicationProperties.TryGetValue(ApplicationProperties.FailureDescription, out var description);
var errorContext = new ErrorContext((string)reason, (string)description);
messageContext.SetFailure(errorContext);
}
}
async Task ReceiveInboundBrokeredMessage(MessageBrokerContext messageContext,
TransactionContext transactionContext)
{
try
{
if (messageContext is null)
{
throw new ArgumentNullException(nameof(messageContext), $"A {typeof(MessageBrokerContext).Name} was not created by the messaging infrastructure.");
}
var inboundMessage = messageContext.BrokeredMessage;
messageContext.ExternalDispatcher = _brokeredMessageDispatcher;
CreateErrorContextFromHeaders(messageContext, inboundMessage);
CreateSagaContextFromHeaders(messageContext);
CreateReplyContextFromHeaders(messageContext, inboundMessage);
CreateNextDestinationContextFromHeaders(messageContext);
CreateCompensationContextFromHeaders(messageContext, inboundMessage);
inboundMessage.WithRouteToSelfPath(this.DestinationPath);
inboundMessage.UpdateVia(Description);
if (transactionContext is null)
{
transactionContext = new TransactionContext(MessageReceiverPath, inboundMessage.TransactionMode);
}
messageContext.Container.Include(transactionContext);
var brokeredMessagePayload = inboundMessage.GetMessageFromBody <TMessage>();
using var scope = _serviceFactory.CreateScope();
var dispatcher = scope.ServiceProvider.GetRequiredService <IMessageDispatcher>();
await dispatcher.Dispatch(brokeredMessagePayload, messageContext).ConfigureAwait(false);
inboundMessage.SuccessfullyReceived = true;
}
catch (CompensationRoutingException cre)
{
var errorContext = new ErrorContext(
$"Routing compensation message of type '{typeof(TMessage).Name}' to '{cre.RoutingContext.DestinationPath?.ToString()}' failed",
$"Compensation reason: '{cre.RoutingContext?.ToString()}'\n" +
$"Routing failure reason: '{cre.InnerException?.Message}'");
messageContext.SetFailure(errorContext);
throw new CriticalBrokeredMessageReceiverException(errorContext, cre);
}
catch (Exception e)
{
ErrorContext errorContext;
if (messageContext is null)
{
errorContext = new ErrorContext(
$"A brokered message was received with no {typeof(MessageBrokerContext).Name}",
$"{e.Message}");
throw new CriticalBrokeredMessageReceiverException(errorContext, e);
}
errorContext = new ErrorContext(
$"An error was encountered receiving message '{typeof(TMessage).Name}'",
$"{e.Message}");
messageContext.SetFailure(errorContext);
throw new CriticalBrokeredMessageReceiverException(errorContext, e);
}
}