Handle exceptions in compensate

manuel_uberti Aug 23, 2016 3:52 AM

Hi,

following the travel-agent quickstart, I'm trying to understand how to deal with exception during the transactions workflow. I'm especially interested in failures during the compensation.

I am using WildFly 10.0.0.Final and Narayana 5.3.4. I have set up a project on github: https://github.com/manuel-uberti/narayana-test

There you can find the class CancelNarayana.java: https://github.com/manuel-uberti/narayana-test/blob/master/MDW/mdw-ejb/src/main/java/com/buddybank/mdw/ejb/service/CancelNarayana.java

I am throwing a RuntimeException on purpose, just to see how I can use Narayana to deal with it. As of now, everything stops, meaning the client included in the repository shows the exception thrown in the EAR.

Is this the default behaviour or is there a way to keep trying until the transaction goes on correctly?

Thank you.

1. Re: Handle exceptions in compensate

gytis Aug 23, 2016 6:03 AM (in response to manuel_uberti)

Emanuel,

I've just tried adding RuntimeException to the compensation handler of the travel agent example (quickstart/CancelBooking.java at 5.3.4.Final · jbosstm/quickstart · GitHub) and it was caught as expected here narayana/ParticipantImpl.java at 5.3.4.Final · jbosstm/narayana · GitHub.
The JTA transaction is of course rolled back as a result. Compensation handler is not invoked repeatedly.
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2. Re: Handle exceptions in compensate

manuel_uberti Aug 23, 2016 8:45 AM (in response to gytis)

Thank you, that's what I needed to know.
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