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Type: Bug
Resolution: Not A Defect
Priority: Major
Component/s: credentials-binding-plugin, credentials-plugin, workflow-cps-global-lib-plugin
Labels:
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I am instantiating an object from within my vars (custom step (testCredentials)) shared library. I then execute a method (getRequiredPackages) on this instance that contains withCredentials step. A groovy.lang.MissingPropertyException is thrown on the withCredentials variable (see stack trace below)

vars/testCredentials.groovy

#!/usr/bin/env groovy
import com.mycorp.deployment.classes.Source

def call(body) {
    def config = [:]
    body.resolveStrategy = Closure.DELEGATE_FIRST
    body.delegate = config
    body()

    def sourceVersion = config.version

    timestamps {
        node() {
            try {
                stage('Test Credentials') {
                    Source buildToolsSource = new Source(steps, sourceVersion)
                    buildToolsSource.getRequiredPackages(steps)
                }
            } catch (e) {
                steps.sh "echo 'Error (${e}) occurred marking the build as failure.'"
                throw e
            } finally {
                steps.cleanWs()
            }
        }
    }
}

Groovy class
/src/com/mycorp/deployment/classes/Source.groovy

#!/usr/bin/env groovy
package com.mycorp.deployment.classes

import org.jenkinsci.plugins.workflow.cps.DSL

class Source implements Serializable {
    String version

    Source(DSL steps, version) {
        this.version = version
    }

    def getRequiredPackages(DSL steps) {
        steps.withCredentials([steps.string(credentialsId: 'git-oauth-token', variable: 'GIT_OAUTH_TOKEN')]) {
            steps.sh(returnStdout: false,
                    script: "curl -L " +
                            "-H 'Authorization: token ${GIT_OAUTH_TOKEN}' " +
                            "https://api.github.com/repos/mycorp/myrepo/zipball/${this.version} " +
                            "-o _packages/myrepo-${this.version}.zip " +
                            "-vvv"
            )
        }
    }
}

I'm getting the following run-time exception:

groovy.lang.MissingPropertyException: No such property: GIT_OAUTH_TOKEN for class: com.magento.deployment.classes.Source
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:458)
at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.getProperty(DefaultInvoker.java:34)
at com.cloudbees.groovy.cps.impl.PropertyAccessBlock.rawGet(PropertyAccessBlock.java:20)

Trying to access the variable via env (${env.GIT_OAUTH_TOKEN}) produces the following error:

groovy.lang.MissingPropertyException: No such property: env for class: com.magento.deployment.classes.SourceNew
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getProperty(ScriptBytecodeAdapter.java:458)
at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.getProperty(DefaultInvoker.java:34)
at com.cloudbees.groovy.cps.impl.PropertyAccessBlock.rawGet(PropertyAccessBlock.java:20)
at com.magento.deployment.classes.SourceNew.getRequiredPackages

Workaround

When I execute the same method from an inline script (rather than a object instance) it works fine. The following modified files works:

vars/testCredentials.groovy

#!/usr/bin/env groovy
import com.mycorp.deployment.classes.Source
import com.mycorp.deployment.scripts.Utility

def call(body) {
    def config = [:]
    body.resolveStrategy = Closure.DELEGATE_FIRST
    body.delegate = config
    body()

    def sourceVersion = config.version

    timestamps {
        node() {
            try {
                stage('Test Credentials') {
                    Source buildToolsSource = new Source(steps, sourceVersion)
                    //buildToolsSource.getRequiredPackages(steps)
                    new Utility().getRequiredPackages(steps, buildToolsSource)
                }
            } catch (e) {
                steps.sh "echo 'Error (${e}) occurred marking the build as failure.'"
                throw e
            } finally {
                steps.cleanWs()
            }
        }
    }
}

Inline script
/src/com/mycorp/deployment/scripts/Utility.groovy

#!/usr/bin/env groovy
package com.mycorp.deployment.scripts

import org.jenkinsci.plugins.workflow.cps.DSL

import com.mycorp.deployment.classes.Source

def getRequiredPackages(DSL steps, Source) {
    steps.withCredentials([steps.string(credentialsId: 'git-oauth-token', variable: 'GIT_OAUTH_TOKEN')]) {
        steps.sh(returnStdout: false,
                script: "curl -L " +
                        "-H 'Authorization: token ${GIT_OAUTH_TOKEN}' " +
                        "https://api.github.com/repos/mycorp/myrepo/zipball/${source.version} " +
                        "-o _packages/myrepo-${source.version}.zip " +
                        "-vvv"
        )
    }
}
return this

I am attempting to create an abstract class with implementation details that other classes can extend. It is not ideal to have to implement this type of logic (withCredentials) in a separate inline scripts to workaround this issue.

Tested with version:

jenkins 2.60.3
credentials binding plugin 1.13
credentials plugin 2.1.16

Details

Description

Workaround

Tested with version:

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