Spring integration: how to adjust all outgoing error messages

Question

I need to adjust all error messages going back to the caller of my integration flows so that I do not leak information, no matter if they are thrown as exception or handled as asynchronous errors. I'd like to avoid defining a custom error channel on every message handler. I have tried to attach a transformer to the default error channel without success:

@Bean
IntegrationFlow errorFlow() {
    return IntegrationFlows.from("errorChannel")
            .transform("{'status': 500, 'error': 'Internal Server Error'}")
            .get();
}

Is there a central point where I can transform all outgoing error messages?

score 1 · Accepted Answer · answered Oct 30 '17 at 11:36

According to your logic, it looks like you deal with REST - request/reply. So, you need to return a reply to request point. This is available via replyChannel header of the request message. Such an information you can access in a MessagingException.failedMessage property of the payload in the ErrorMessage.

Summarizing all of that your .transform() must expect MessagingException as a payload and produce output message with copying headers from that failedMessage. This way the message will be sent to the reply channel of the HTTP Inbound Gateway request message.

Spring integration: how to adjust all outgoing error messages

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