Simple Jenkins pipeline fails when I check an environment variable

Question

In my multibranch pipeline job, I can successfully access environment variables like this:

echo "$env.BRANCH_NAME"

But it throws and exception if I try to compare against that same environment variable:

if($env.BRANCH_NAME == 'master') { echo "This is the master branch" }

Here's the top of the error stack I'm given:

groovy.lang.MissingPropertyException: No such property: $env for class: groovy.lang.Binding at groovy.lang.Binding.getVariable(Binding.java:63) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onGetProperty(SandboxInterceptor.java:224) at org.kohsuke.groovy.sandbox.impl.Checker$4.call(Checker.java:241) at org.kohsuke.groovy.sandbox.impl.Checker.checkedGetProperty(Checker.java:238) at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.getProperty(SandboxInvoker.java:28) at com.cloudbees.groovy.cps.impl.PropertyAccessBlock.rawGet(PropertyAccessBlock.java:20) at WorkflowScript.run(WorkflowScript:4)

Do I need to do some sort of script approval here? I checked in Manage Jenkins -> In-Process Script Approval, but nothing is there.

AymDev · Accepted Answer · 2021-09-29 15:19:18Z

8

Try to remove the dollar sign or use "${env.BRANCH_NAME}"

edited Sep 29, 2021 at 15:19

AymDev

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answered Dec 13, 2016 at 22:36

Amityo

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1 Comment

PortMan Over a year ago

it worked when I changed it to if("$env.BRANCH_NAME" == 'release')

David M. Karr · Accepted Answer · 2016-12-14 07:04:32Z

The earlier answer is correct, but for more information, the "$var" syntax is what is used within a string to interpolate the variable value into the string. Outside of a string, just reference the variable.

Arnold Roa · Accepted Answer · 2021-05-27 10:42:20Z

Use the $ to interpolate variables, any of this options will work:

if(env.BRANCH_NAME == 'master') { echo "This is the master branch" }

or

if("$env.BRANCH_NAME" == 'master') { echo "This is the master branch" }

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