Re: Plugin execution on a slave

[Mark Adamcin]

I ran into this recently. It turns out you can't pass an anonymous implementation of MasterToSlaveFileCallable to `call`. It must be a named class.

Mark Adamcin

http://adamcin.net/

On Tue, Oct 25, 2016 at 2:29 PM, <andrew...@xtra.co.nz> wrote:

A user has asked me to support running my plugin on a slave but whatever I try I keep getting an “Unable to serialize” exception.  My code is now about as basic as it gets and still failing.  Any ideas?

 

I’m running Jenkins 2.19.1 and my plugin has a Jenkins version dependency of '1.642.3'.

 

 

@Override

public boolean perform(final AbstractBuild<?, ?> build, final Launcher launcher, final BuildListener listener) throws IOException, InterruptedException {

    return launcher.getChannel().call(new MasterToSlaveCallable<Boolean, IOException>() {

           private static final long serialVersionUID = -8921104780200640023L;

 

            @Override

            public Boolean call() throws IOException {

                return true;

            }

       });

}

 

 

FATAL: Unable to serialize com.inedo.proget.jenkins.DownloadPackageBuilder$1@10c1200

java.io.IOException: Unable to serialize com.inedo.proget.jenkins.DownloadPackageBuilder$1@10c1200

                at hudson.remoting.UserRequest.serialize(UserRequest.java:201)

                at hudson.remoting.UserRequest.<init>(UserRequest.java:64)

                at hudson.remoting.Channel.call(Channel.java:795)

                at com.inedo.proget.jenkins.DownloadPackageBuilder.perform(DownloadPackageBuilder.java:84)

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

                at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)

                at hudson.model.Build$BuildExecution.build(Build.java:205)

                at hudson.model.Build$BuildExecution.doRun(Build.java:162)

                at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)

                at hudson.model.Run.execute(Run.java:1720)

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

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

                at hudson.model.Executor.run(Executor.java:404)

Caused by: java.io.NotSerializableException: com.inedo.proget.jenkins.DownloadPackageBuilder

                at java.io.ObjectOutputStream.writeObject0(Unknown Source)

                at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

                at java.io.ObjectOutputStream.writeSerialData(Unknown Source)

                at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

                at java.io.ObjectOutputStream.writeObject0(Unknown Source)

                at java.io.ObjectOutputStream.writeObject(Unknown Source)

                at hudson.remoting.UserRequest._serialize(UserRequest.java:190)

                at hudson.remoting.UserRequest.serialize(UserRequest.java:199)

                ... 12 more

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[Jesse Glick]

On Tue, Oct 25, 2016 at 8:01 PM, Mark Adamcin <ada...@gmail.com> wrote:
> It turns out you can't pass an anonymous
> implementation of MasterToSlaveFileCallable to `call`. It must be a named
> class.

Specifically a *static* nested class (or top-level class). It is the
synthetic `this$0` field or whatever that is unserializable.