Parameter types in template.yaml

When a developer creates a Pipeline job in CloudBees CI based on a Pipeline Template, the available parameters are displayed in the user interface as options for which the developer can specify a value.

string

In template.yaml

version: 1
type: pipeline-template
name: A template with a single parameter
parameters:
  - name: aParam
    type: string
    displayName: An individual parameter

In Jenkinsfile

echo "Hello ${aParam}"

number

In template.yaml

version: 1
type: pipeline-template
name: Template with number Parameter
description: A template with a single number parameter
parameters:
  - name: someNumber
    displayName: A number
    type: number

In Jenkinsfile

echo "Remainder: ${someNumber % 2}"

boolean

In template.yaml

version: 1
type: pipeline-template
name: A Declarative template with a boolean parameter
parameters:
  - name: true_or_false
    displayName: A boolean parameter
    type: boolean

In Jenkinsfile

pipeline {
    agent any

    /* In the following stages, true_or_false is not surrounded
    by ${}. That's because the stages are using true_or_false in an
    expression.
    */

    stages {
        stage('only-if-true') {
            when {
                expression {
                    return true_or_false
                }
            }
            steps {
                echo "We ran the stage because true_or_false was true"
            }
        }
        stage('only-if-false') {
            when {
                expression {
                    return !true_or_false
                }
            }
            steps {
                echo "We ran the stage because true_or_false was false"
            }
        }
    }
}

credentials

When specifying a default value, use the ID for the credentials and not the actual secret. When the developer creates a job using the template, they will also specify the credentials ID. (You must set the ID through the Credentials Plugin or the Credentials Binding Plugin.

In template.yaml

version: 1
type: pipeline-template
name: A Declarative template with a credentials ID parameter
parameters:
  - name: github_creds
    displayName: GitHub Credentials ID
    type: credentials
    defaultValue: github-creds

In Jenkinsfile

pipeline {
    agent any
    stages {
        stage('echo id') {
            steps {
                echo "Credentials ID: ${CRED_ID}"
            }
        }
    }
}