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  1. Jenkins
  2. JENKINS-44537

Cannot pass Groovy method references as parameters for DSL objects

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      It is not possible to pass Groovy method references as parameters to other methods if the method reference points to a DSL object. The code below demonstrates that the method reference works fine with the "println" method available to all Groovy objects, but fails when the reference points to "steps.echo", where steps is the DSL object available in all Jenkinsfiles.

      foo(this.&println)
foo(steps.&echo)

def foo(arg) {
    arg.call("hello")
}

      fails with the following:

      [Pipeline] echo
hello
[Pipeline] End of Pipeline
[BFA] Scanning build for known causes...
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hudson.remoting.ProxyException: groovy.lang.MissingMethodException: No signature of method: org.jenkinsci.plugins.workflow.cps.DSL.echo() is applicable for argument types: (java.lang.String) values: [hello]

            Unassigned Unassigned
            boon Joe Harte
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              Created:
              Updated: