Build Flow Plugin questions on how to access defined values

[Katie Outram]

I am new to the build-flow-plugin and have been asked to add some steps to an existing job.   While I have a shell script that does this, it was requested that I use the build-flow-plugin instead.   I am familiar with Groovy as I use it to access information within jenkins, but the DSL/Groovy build flow plugin confuses me.   Can someone explain to me how to grab a value from Jenkins, or a value that is currently being used in existing build-flow, and then go and use it in a later step after everything is completed to execute some action.    

This is a reduced list of what is currently configured for the existing build flow

bParent = build ("build_start",                             

                              TOOL_BRANCH : params['TOOL_BRANCH'],

                              TOOL_CHANGE_NUMBER : params['TOOL_CHANGE_NUMBER']

  )

if (bParent.build.properties.environment['TOOL_CHANGE_MERGED'] == 'TRUE') {

    return 0

}

parallel (

        {build ("update_issue", EnvVarFile : bParent.build.properties.environment['ENV_VAR_FILE']) },

        {build ("verify_commit_message", EnvVarFile : bParent.build.properties.environment['ENV_VAR_FILE']) }

)

My ultimate goal is to clean up after the steps listed above (rm -rf several directories but keep certain directories).   I have tried breaking this down to just println a value from Jenkins, and everytime I do this, my script fails.

These are the actions I have taken and I included a brief comment about each action.

println “${TOOL_BRANCH}”  - my parameter from above

println “${BUILD_ID}”   - Jenkins parameter

println “bParent.build.properties.environment['GIT_TREE']”  - this is the directory I want to clean up from the ENV_VAR_FILE, however I can use a combination of other values, to obtain the same result

Whenever I try anything above or anything similar I get the following error.   What am I missing?

ERROR: Failed to run DSL Script

groovy.lang.MissingPropertyException: No such property: TOOL_BRANCH for class: Script1

        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:50)

        at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:49)

        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:231)

        at Script1.run(Script1.groovy:42)

        at Script1$run.call(Unknown Source)

        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)

        at Script1$run.call(Unknown Source)

        at com.cloudbees.plugins.flow.FlowDSL.executeFlowScript(FlowDSL.groovy:84)

        at com.cloudbees.plugins.flow.FlowRun$FlyweightTaskRunnerImpl.run(FlowRun.java:219)

        at hudson.model.Run.execute(Run.java:1665)

        at com.cloudbees.plugins.flow.FlowRun.run(FlowRun.java:155)

        at hudson.model.ResourceController.execute(ResourceController.java:88)

        at hudson.model.Executor.run(Executor.java:246)

        at hudson.model.OneOffExecutor.run(OneOffExecutor.java:66)

 

[Ginga, Dick]

I’m thinking that this:

 

println “${TOOL_BRANCH}” 

 

needs to be this:

 

println params[‘TOOL_BRANCH’]

 

what you cannot do is “Create” a new environment or parameter value inside your build-flow and access that outside in a real post-build step.

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[Katie Outram]

Thanks!

 

What worked for me was 

println bParent.build.properties.environment['GIT_TREE'] 

 

The issue I had was due to the quotes and how I was using them.

 

Thanks for your help!