Why is a Bamboo CustomBuildCompleteAction implementation in my plugin unable to be cast?

I have been trying to develop a plugin which implements the Bamboo CustomBuildCompleteAction module.

I wish to trace my plugin code using IDEA and have started the Bamboo instance from the command line - atlas-debug --product bamboo. Running IDEA in debug mode informs me that it has successfully connected the debug port.

Having placed a breakpoint at the first line of code in my override of the CustomBuildCompleteAction.run() method, I would expect to see it triggered upon successful completion of a manually triggered build. However I do not. Instead, I see in the Bamboo .log the following:

ERROR [AtlassianEvent::0-BAM::EVENTS:pool-2-thread-13] [NamedThreadFactory] Uncaught exception in thread AtlassianEvent::0-BAM::EVENTS:pool-2-thread-13

java.lang.ClassCastException: co.nz.xxxxx.bamboo.plugins.PostBuildCompleteNotifier cannot be cast to com.atlassian.bamboo.build.CustomPostBuildCompletedAction

Can anyone assist me to resolve this? What do I need to add/modify to ensure that my implementation of the CustomPostBuildCompletedAction is cast-able?

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Accepted answer

The cause of my problem was right there in the exception message and was staring me in the face:

"PostBuildCompleteNotifier cannot be cast to com.atlassian.bamboo.build.CustomPostBuildCompletedAction".

I had implemented the CustomPostBuildComplete interface...

public PostBuildCompleteNotifier implements CustomPostBuildCompleteAction

..but had declared the postBuildCompletedAction module in atlassian-plugin.xml:

<postBuildCompletedAction .../>

Silly boy - RTFM!

Investigating this a bit further, I have added a constructor to my plugin to confirm that debugging is actually working. Here is the code, and the constructor definitely does get hit.

public class TestCompleteBuildAction implements CustomBuildCompleteAction


public TestCompleteBuildAction()


String _text = "constructor got hit";// <-- breakpoint here definitely fires



public void run(Buildable buildable, BuildResults buildResults)


String _text = buildable.getBuildKey();// <--breakpoint here does not.



The stack trace in the ERROR shows that the PostBuildCompletedEventsListener appears to be the class that is trying to cast my class (complete log entry follows):

ERROR [AtlassianEvent::0-BAM::EVENTS:pool-2-thread-12] [NamedThreadFactory] Uncaught exception in thread AtlassianEvent::0-BAM::EVENTS:pool-2-thread-12

java.lang.ClassCastException: co.nz.xxxxxx.bamboo.plugins.TestCompleteBuildAction cannot be cast to com.atlassian.bamboo.build.CustomPostBuildCompletedAction

at com.atlassian.bamboo.v2.build.events.PostBuildCompletedEventListener$1.run(PostBuildCompletedEventListener.java:67)

at com.atlassian.bamboo.variable.CustomVariableContextRunnerImpl.execute(CustomVariableContextRunnerImpl.java:27)

at com.atlassian.bamboo.v2.build.events.PostBuildCompletedEventListener.performAction(PostBuildCompletedEventListener.java:54)


Unfortunately, still no closer to understanding why ClassCastException is being thrown. Any assistance gratefully received.

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