How to change defaultValue of input in case of declarative pipeline script?

[Kiyoshi Ohgishi]

I want to change from scripted pipeline script to declarative pipeline script.
But I have one problem defaultValue of input cannot change value in case of declarative pipeline script.

Below is the scripted pipeline script I want to change from.
----
def value1 = 'initial value'
node {
    label 'master'
    stage('prediction') {
        value1 = sh(script: 'echo predicted value', returnStdout: true).trim()
    }
}
def setting
stage('setting') {
    setting = input(parameters: [string(name: 'value2', defaultValue: value1)])
}
stage('execution') {
    build(job: 'job', parameters: [string(name: 'value2', value: setting)])
}
----
The prompted value in input step is "predicted value" as I exected.

Below is the failing declarative pipeline script I tried.
----
def value1 = 'initial value'
pipeline {
    agent none
    stages {
        stage('prediction') {
            agent {
                label 'master'
            }
            steps {
                script {
                    value1 = sh(script: 'echo predicted value', returnStdout: true).trim()
                }
            }
        }
        stage('execution') {
            input {
                message 'setting'
                parameters {
                    string(name: 'value2', defaultValue: value1)
                }
            }
            steps {
                build(job: 'job', parameters: [string(name: 'value2', value: value2)])
            }
        }
    }
}
----
The prompted value is "initial value" as I don't expect.

What I want to make with a script is the following three steps.
1. get "predicted value" using shell script in the git repository.
2. prompt "predicted value" and decide value.
3. run the job with decided value.

How to change defaultValue of input in case of declarative pipeline script?

Kiyoshi Ohgishi

[Victor Martinez]

You can try with environment variables or the Field annotation as shown below

import groovy.transform.Field
@Field def value1 = 'initial value'

[Kiyoshi Ohgishi]

Thank you for your advice.
I tried the following script.

import groovy.transform.Field
@Field def value1 = 'initial value'

But the prompted value is "initial value" , which is the same value as before.

2020年11月26日木曜日 23:05:50 UTC+9 victormar...@gmail.com:

[Kiyoshi Ohgishi]

Thank you for your advice.
I tried the following script.

----

env['value1'] = 'initial value'

pipeline {
    agent none
    stages {
        stage('prediction') {
            agent {
                label 'master'
            }
            steps {
                script {

                    env['value1'] = sh(script: 'echo predicted value', returnStdout: true).trim()

                }
            }
        }
        stage('execution') {
            input {
                message 'setting'
                parameters {

                    string(name: 'value2', defaultValue: env['value1'])
                    string(name: 'value3', defaultValue: env.value1)
                }
            }
            steps {
                build(job: 'job', parameters: [string(name: 'value4', value: env.value1), string(name: 'value5', value: env['value1'])])
            }
        }
    }
}

----

Both 'value2' and 'value3' prompted were 'initial value'.

Both parameters 'value4' and 'value5' were 'predicted value'.

' defaultValue'  seems to be evaluated only when loading.

2020年11月30日月曜日 1:56:10 UTC+9 yannick...@gmail.com:

I don't understand why your example do not work, but I was recently confronted to this bug : https://issues.jenkins.io/browse/JENKINS-42360
This changed my way of thinking : stop use groovy var, use environment, everywhere, always.

Maybe you could try to set your variable as env var : env['VALUE_NAME'] = 'value'
and use it with env.VALUE_NAME.

I think that using env var is a more "standard" way of doing, especially in declarative pipelines.
I even use a "setEnv" function in /vars to ease the process without the need of script closure.

Hope this helps

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[Kiyoshi Ohgishi]

I found a solution.
I put "input" in "script".
value2, value3, value4 and value5 are "predicted value".
It's fine for me.

---

env['value1'] = 'initial value'
pipeline {
agent none
stages {
stage('prediction') {
agent {
label 'master'
}
steps {
script {
env['value1'] = sh(script: 'echo predicted value',
returnStdout: true).trim()
}
}
}
stage('execution') {

steps {
script {
def values = input(
message: 'setting',
parameters: [
string(name: 'value2', defaultValue: env['value1']),

string(name: 'value3', defaultValue: env.value1)

]

)
build(job: 'job', parameters: [

string(name: 'value4', value: values.value2),
string(name: 'value5', value: values.value3)
])
}
}
}
}
}
---
--
Kiyoshi Ohgishi

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>>>
>>
>>
>> --
>> Yannick LACAUTE
>> Consultant indépendant
>> 39 rue de Wattignies, 75012 Paris
>> Tel : 06 16 85 95 76
>>
>

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