setting environment variables in jenkins file

Question

I am trying to write a jenkins build script for my project in Groovy. the problem is that I want to define some variables at the top of the script and use them when I want as Environment variable.

def someVariable = 'foo'

pipeline{
    agent any

    stages{
        stage("build"){
            environment {
                specialParameter = someVariable
            }
            steps{
                ...
            }
        }
        ...
    }

}

I have some other steps that their environment variables are different and also I want to just change the top of the script to able to build other branches and so on. so I just want a way to use the defined someVariable in the environment body.

Thanks

lvthillo · Accepted Answer · 2018-10-29 11:49:15Z

3

First you can just use the environment section to define environment variables which are known in you whole script:

pipeline {
    agent any
    environment {
        TEST='myvalue'
    }
    stages{
        stage("build"){
            steps{
                ...
            }
        }
    }
}

You can also define a variable which is only known in one stage:

pipeline {
    agent any
    stages{
        stage("build"){
            environment {
                TEST='myvalue'
            }
            steps{
                ...
            }
        }
    }
}

But for your solution (using def above the pipeline) you can just do:

def someVariable = 'foo'

pipeline{
    agent any

    stages{
        stage("build"){
            steps{
                echo someVariable
            }
        }
    }
}

This will output 'foo'.

You can get more informations on variable declarations syntax by reading Jenkins online book.

UPDATE:

def someVariable = 'foo'

pipeline{
    agent any

    stages{
        stage("build"){
            environment {
                TEST = sh(script: "echo -n ${someVariable}", returnStdout: true)
            }
            steps{
                sh 'echo "${TEST}"'
            }
        }
    }
}

Output:

[test] Running shell script
+ echo foo
foo

edited Oct 29, 2018 at 11:49

answered Oct 29, 2018 at 9:17

lvthillo

31.3k16 gold badges102 silver badges138 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

AminSojoudi Over a year ago

maybe my question is ambiguous, I think you did not pay enough attention to my question, last sentence of my question specifies what I want. I want to use declared variable inside "environment body" not in "steps", just look at my code.

AminSojoudi · Accepted Answer · 2018-11-17 18:45:39Z

0

Just found another way to use defined environment variables.

def getsomeVariable (){
    return 'foo'
}


pipeline{
    agent any

    stages{
        stage("build"){
            environment {
                specialParameter = getsomeVariable()
            }
            steps{
                ...
            }
        }
        ...
    }

}

answered Nov 17, 2018 at 18:45

AminSojoudi

2,0362 gold badges22 silver badges46 bronze badges

Collectives™ on Stack Overflow

setting environment variables in jenkins file

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related