[workflow] email-ext step fails in freestyle project triggered by buildJob

[David Resnick]

I have a freestyle job that fails to run the post-build extended email step when it is triggered by a workflow buildJob construct.

The error message:

ERROR: Could not send email as a part of the post-build publishers.

java.lang.ClassCastException: org.jenkinsci.plugins.workflow.job.WorkflowJob cannot be cast to hudson.model.AbstractProject

at hudson.plugins.emailext.plugins.recipients.UpstreamComitterRecipientProvider.addRecipients(UpstreamComitterRecipientProvider.java:40)

at hudson.plugins.emailext.ExtendedEmailPublisher.createMail(ExtendedEmailPublisher.java:578)

at hudson.plugins.emailext.ExtendedEmailPublisher.sendMail(ExtendedEmailPublisher.java:306)

at hudson.plugins.emailext.ExtendedEmailPublisher._perform(ExtendedEmailPublisher.java:297)

at hudson.plugins.emailext.ExtendedEmailPublisher.perform(ExtendedEmailPublisher.java:244)

at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)

at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:761)

at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:721)

at hudson.model.Build$BuildExecution.cleanUp(Build.java:193)

at hudson.model.Run.execute(Run.java:1788)

at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)

at hudson.model.ResourceController.execute(ResourceController.java:98)

at hudson.model.Executor.run(Executor.java:374)

It seems that it might be able to succeed if I remove some of the categories I chose to send to, though I have not yet experimented with this.

Is there a known workaround for this problem? Would it be helpful for me to open a bug for this?

Thanks,

David

[Slide]

This is a known incompatibility between workflow and email-ext. Email-ext expects projects to be based on AbstractProject and Workflow is not.

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[David Resnick]

Is there any plan to bridge this divide? I notice that it pops up fairly often whenever the workflow plugin is in the picture.

- David

[Slide]

It's not on my near term radar sadly, but I hope to get to it this year if no one else does it and creates a pull request.

[Jesse Glick]

On Wednesday, July 29, 2015 at 9:23:01 AM UTC-4, David Resnick wrote:

java.lang.ClassCastException: org.jenkinsci.plugins.workflow.job.WorkflowJob cannot be cast to hudson.model.AbstractProject

at hudson.plugins.emailext.plugins.recipients.UpstreamComitterRecipientProvider.addRecipients(UpstreamComitterRecipientProvider.java:40)

Email Ext is not currently supported *from* a Workflow project, and that is a deep topic. But it is clearly a straightforward bug in that plugin that it does a blind cast of the *upstream* project. If it cannot handle an arbitrary `Job` here, it should print a warning and move on. File it please, label `workflow`.

[David Resnick]

https://issues.jenkins-ci.org/browse/JENKINS-29970

- David