如何通过上游作业打印下游作业中的参数？

Question

I'm new into Jenkins pipeline. I want to pass parameters from Upstream Job to Downstream job. But I'm not getting any way to print those parameters. And I don't want to use any plugin. Please help. Thanks. Here is my code for Upstream job:

echo "Hey There!!"
build job : 'DownStream-Job',
    parameters: [
            string(name: 'param1', value: "HI"),
            string(name: 'param2', value: "BYE")
    ]

I want to print param1 and param2 in downstream job.

Answer 1

Parameters are available in jobs in the params object.

// DownStream-Job.groovy
// declarative
pipeline {
    agent any
    parameters {
        string name: 'param1'
        string name: 'param2'
    }

    stages {
        stage('Print params') {
            steps {
                echo params.param1
                echo params.param2
            }
        }
    }
}

// DownStream-Job.groovy
// scripted
node() {
    echo params.param1
    echo params.param2
}