CODEWITHSUNDEEP
error-handlingspring-integration
Chetya
Chetya

Reputation: 1317

Spring integration Error handling - How do I access original faulty message's history?

We have a spring-integration application where we would like to deal with the messages on the error channel.At a minimum we would like to extract the history and log it so we can visualise where exactly it failed etc

Here is a brief markup of just this bit

<int:poller id="defaultPoller" default="true" fixed-delay="5000" />

    <int:channel id="MyCustomErrorChannel">
        <int:queue capacity="10"/>
    </int:channel>



    <int:header-enricher id="errorMsg.HeaderEnricher"
        input-channel="errorChannel"
        output-channel="MyCustomErrorChannel">
        <int:header name="history" expression="payload.failedMessage.headers" />
    </int:header-enricher>

    <int:service-activator input-channel="MyCustomErrorChannel" ref="errorLogger" method="logError"/>


    <bean id="errorLogger" class="com.dataprep.util.ErrorLogger" />

The idea is to define our custom error channel MyCustomErrorChannel. Any error that ends up in the default errorChannel gets its header's enriched before being put out on MyCustomErrorChannel Lastly we have a logger that reads the messages from MyCustomErrorChannel and logs the payload which is the underlying exception and also the history.

I notice that the history in my logger is always 3 steps errorChannel,errorMsg.HeaderEnricher,pbSwiftRouterErrorChannel i.e nothing prior to this message landing on the errorChannel is obtainable in the history. How do I get hold of the original message's history (i.e the history of the faulty message which somehow landed on the default error channel as a new Error Message)

Could you please take a look at my header enricher and let me know how to access the headers on the failed message and stuff it to the error message?

Is it doable at all ?

Upvotes: 2

Views: 1056

Answers (1)

Artem Bilan
Artem Bilan

Reputation: 121272

  1. To replace existing headers you should use overwrite="true", because the history is built for the ErrorChannel, too.

  2. You should override exactly with history header, not the whole headers. Therefore your expression must be like this:

    <int:header name="history"
            expression="payload.failedMessage.headers.history"
            overwrite="true"/>

Upvotes: 2

Related Questions