[FIXED] jenkins pipeline readYaml how to use variable to specify key

Issue

Suppose the yaml file is like this：

#test.yaml
0.6.5.1.0:
  module:
  - mysql
  - zk

0.7.1.0.0:
  module:
  - java

Now I want to get the module list of specified version, and the version is a variable, I try to write the jenkins pipeline like this:

yamlFile = readYaml file: test.yaml
version = '0.7.1.0.0'
moduleList = yamlFile.get("${version}").get(module)

but this can't work, yamlFile.get("${version}") is a null object, how can I achieve this?

Solution

This works for me:

pipeline {
    agent any
    stages {
        stage ('read') {
            steps {
                script {
                     def data = readYaml text: """
0.6.5.1.0:
  module:
  - mysql
  - zk

0.7.1.0.0:
  module:
  - java
  """
                   version = '0.7.1.0.0'
                   println data.get(version).get('module')
               }
            }
        }
    }
}

The output:

Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on server in /home/user/workspace/task
[Pipeline] {
[Pipeline] stage
[Pipeline] { (read)
[Pipeline] script
[Pipeline] {
[Pipeline] readYaml
[Pipeline] echo
[java]
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

Answered By - MaratC
Answer Checked By - Senaida (JavaFixing Volunteer)