[JIRA] [workflow-plugin] (JENKINS-27927) Some interface idioms do not work in Groovy CPS

Tue, 14 Apr 2015 08:59:35 -0700

I'm glad the intention is aligned with the desire to have these groovy language features available and understand that support for interface will require work in the groovy CPS.

In the short term though, is there a recommended workaround that could provide some interface like equivalent? Or is it just not possible to do anything like this at this stage?
Perhaps pass HashMaps of Closures between the top level "classes" as per
https://github.com/jenkinsci/workflow-plugin/blob/master/cps-global-lib/README.md#writing-shared-code

e.g.

org/foo/Zot.groovy
package org.foo
// Closures define the interface for Zot
Closure show
Closure name

def specify_interface (Hashmap hm) {
    this.show = hm["show"]
    this.name = hm["name"]
}
flow.groovy
node {
    def z = new org.foo.Zot()
    z.specify_interface(["show": { echo "Hello" }, "name": { return "Bernard" }])

    // you can then pass z around beyond the scope of flow.groovy
    z.show()
    echo z.name()
}

Or is there a more elegant way within the constraints of what is and what is not possible today?
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