How to set multipe values in CascadeChoiceParameter's for referencedParameters - groovy

Question

Trying to set multiple values in CascadeChoiceParameter's for referencedParameters. What the format should be? Docs documentation said that it should be 'string', but in case of setting referencedParameters: 'param1,param2' it goes to fallback script.
here is the class:
[$class: 'CascadeChoiceParameter',
name: 'SOME_PARAM',
description: 'some description',
randomName: '',
script: [$class: 'GroovyScript',
fallbackScript: [
classpath: [],
sandbox: true,
script: 'return ["item_1"]'
],
script: [
classpath: [],
sandbox: true,
script: """
if(PARAM_2.equals("some_value") && PARAM_3.equals("some_value")) {
return ["item_1", "item_2", "item_3"]
} else if((PARAM_2.equals("E2E_Tests") || (PARAM_2.equals("Real_API")) && PARAM_3.equals("knox_guard")) {
return ["item_1", "item_2", "item_4"]
} else {
return ["item_1"]
}
""".stripIndent()
]
],
choiceType: 'PT_SINGLE_SELECT',
referencedParameters: 'PARAM_2,PARAM_3',
filterable: false,
filterLength: 1
],

Answer 1

The fallback script is used if/when there is any kind of exception/error when attempting to execute the main script. In your case, there is a compilation error in the else if((PARAM_2.equals("E2E_Tests") || (PARAM_2.equals("Real_API")) && PARAM_3.equals("knox_guard")) line. All the open parenthesis haven't been closed - there are 6 open parenthesis and only 5 close parenthesis. Anyway, I haven't tested a CascadeChoiceParameter version of the pipeline. I have tested using activeChoiceReactiveParam. Below is a working job DSL:
String choicesScript = """
if(PARAM_2.equals("some_value") && PARAM_3.equals("some_value")) {
return ["item_1", "item_2", "item_3"]
} else if((PARAM_2.equals("E2E_Tests") || (PARAM_2.equals("Real_API")) && PARAM_3.equals("knox_guard"))) {
return ["item_1", "item_2", "item_4"]
} else {
return ["item_5"]
}
""".stripIndent()
String pipeline = '''
pipeline {
agent any
stages {
stage('Show parameter values') {
steps {
echo "PARAM_2: ${params.PARAM_2}, PARAM_3: ${params.PARAM_3}, SOME_PARAM: ${params.SOME_PARAM}"
}
}
}
}
'''.stripIndent()
pipelineJob('reactive-params') {
parameters {
activeChoiceParam('PARAM_2') {
description('First test parameter')
choiceType('SINGLE_SELECT')
groovyScript {
script('return ["some_value", "E2E_Tests", "Real_API"]')
}
}
activeChoiceParam('PARAM_3') {
description('Second test parameter')
choiceType('SINGLE_SELECT')
groovyScript {
script('return ["some_value", "knox_guard"]')
}
}
activeChoiceReactiveParam('SOME_PARAM') {
description('some description')
choiceType('SINGLE_SELECT')
referencedParameter('PARAM_2')
referencedParameter('PARAM_3')
groovyScript {
script(choicesScript)
fallbackScript('return ["item_1"]')
}
}
}
definition {
cps {
script(pipeline)
}
}
}