How to read property from config file inside Jenkins pipeline using Config File Provider Plugin

Question

I want to parametrize my Jenkins pipeline with a simple properties config file

skip_tests=true

that I've added to Jenkins Config File Managment:

In my pipeline I'm importing this file and try to read from it using the Jenkins Pipeline Config File Plugin.

node('my-swarm') {

 MY_CONFIG = '27206b95-d69b-4494-a430-0a23483a6408'

 try {

     stage('prepare') {
         configFileProvider([configFile(fileId: "$MY_CONFIG", variable: 'skip_tests')]) {
             echo $skip_tests
             assert $skip_tests == 'true'
         }
     }
 } catch (Exception e) {
     currentBuild.result = 'FAILURE'
     print e
 }
}

This results in an error:

provisioning config files...
copy managed file [my.properties] to file:/home/jenkins/build/workspace/my-workspace@tmp/config7043792000148664559tmp
[Pipeline] {
[Pipeline] }
Deleting 1 temporary files
[Pipeline] // configFileProvider
[Pipeline] }
[Pipeline] // stage
[Pipeline] echo
groovy.lang.MissingPropertyException: No such property: $skip_tests for 
class: groovy.lang.Binding

Any ideas what I'm doing wrong here?

Answer 1

With the help of the other answers and How to read properties file from Jenkins 2.0 pipeline script I found the following code to work:

configFileProvider([configFile(fileId: "$PBD1_CONFIG", variable: 'configFile')]) {
     def props = readProperties file: "$configFile"
     def skip_tests = props['skip_tests']
     if (skip_tests == 'true') {
        print 'skipping tests'
     } else {
        print 'running tests'
     }
}

I had to use readProperties from Jenkins' Pipeline Utility Steps Plugin.

Answer 2

Since the file is in property format you can use it in a shell step:

sh """
  source ${MY_CONFIG}
  .
  .
  .
"""

You would need to export the properties that need to be available on programs that the shell calls (e.g. Maven)