Pipeline As Yaml Plugin for Jenkins

This plugin enables defining Jenkins Pipelines in YAML Format for Pipeline and MultiBranch Pipeline Jobs.

Important

Currently this plugin is in the incubation stage. It will evolve further to become more aligned with the Pipeline ecosystem, and some breaking changes are plausible. You are welcome to try out this plugin and to provide your feedback. Contributions are welcome!

Description

Jenkins enables defining pipelines with specific DSL. With this plugin Jenkins pipelines can be defined in Yaml format.

Defined Yaml format is converted to Jenkins Pipeline Declarative syntax in runtime.

Any existing steps in Snippet Generator or Declarative Directive Generator can bu used in step or script block.

Jenkins Declarative Pipeline Syntax rules must be followed.

Please see below for usage examples.

Usage

Pipeline

For using Pipeline As Yaml in your Pipeline Job, select one of the possible options.

Editor

Define Pipeline As Yaml with embedded editor.

SCM

Retrieve Pipeline As Yaml from SCM Definition

MultiBranch Pipeline

For using Pipeline as Yaml in your MultiBranch Pipeline, select by Jenkinsfile As Yaml' in Build Configuration`.

Pipeline As Yaml Syntax

Pipeline definition must stat with pipeline key.

For detailed usage examples please check here.

pipeline:
  agent: any
    ...
    ...

Agent

Example agent definition is shown below. Agent definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline:
  agent:
    node:
      label: 'label'

Environment

Example definition is shown below. Environment definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline:
  environment:
    KEY1: "VAL1"

Options

Example definition is shown below. Options definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline:
  options:
    - "timeout(time: 1, unit: 'HOURS')"
    # Or any other 'options' directive which is generated by Declarative Directive Generator

Post

Example definition is shown below. Post definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline:
  post:
    always:
      - echo Test
    changed:
      - echo Test
    # Or any other 'post' directive which is generated by Declarative Directive Generator 

Tools

Example definition is shown below. Tools definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline: 
  tools:
    maven: "maven"
    # Or any other 'tools' directive which is generated by Declarative Directive Generator" 

When

Example definition is shown below. When definitions can be used under stage definitions.

For further supported definitions syntax please check.

pipeline:
  stages:
    - stage: "WhenTest"
      when:
        - "branch 'production'"
      # Or any other 'when' directive which is generated by Declarative Directive Generator" 

Parameters

Example definition is shown below.

For further supported definitions syntax please check.

pipeline:
  parameters:
    - "string(name: 'PERSON', defaultValue: 'Mr Jenkins', description: 'Who should I say hello to?')"
    # Or any other 'parameters' directive which is generated by Declarative Directive Generator" 

Triggers

Example definition is shown below.

For further supported definitions syntax please check.

pipeline:
  triggers:
    - cron('H */4 * * 1-5')
    # Or any other 'triggers' directive which is generated by Declarative Directive Generator" 

Library

Example definition is below.

Before using Library feature please read here

For further supported definitions syntax please check.

pipeline:
  library: "library@master"
  agent:
    any:
  stages:
    - stage: "Stage Library"
      steps:
        script:
          - "myCustomStepInLibrary"

Stages

Example definition is shown below.

For further supported definitions syntax please check.

pipeline:
  agent:
    none:
  stages:
    - stage: "Stage1"
      steps:
        - echo "1"
    - stage: "Stage2"
      steps:
        - echo "2"

pipeline:
  agent:
    none:
  stages:
    - stage: "Stage1"
      stages:
        - stage: "Inner Stage1"
          steps:
            - echo "1" 

pipeline:
  stages:
    - stage: "Stage1"
      steps:
        - echo "1"
    - stage: "Parallel"
      parallel:
        - stage: "Parallel1"
          steps:
            - echo "P1"
        - stage: "Parallel2"
          steps:
            - echo "P1"

Steps

Example definition is shown below.

Any other 'step' which is generated by Snippet Generator can be used in steps definitions.

For further supported definitions syntax please check.

pipeline:
  stages:
    - stage: "Stage"
      steps:
        - echo env.WORKSPACE # Or any other 'step' which is generated by Snippet Generator" 

Any other 'step' which is generated by Snippet Generator or Groovy Script can be used in steps definitions.

pipeline:
  stages:
    - stage: "Stage1"
      steps:
        script:
          - echo "1" # Or any other 'step' which is generated by Snippet Generator, Groovy Script" 

For implementing complex scripts or steps

pipeline:
  stages:
    - stage: "Stage1"
      steps:
        script: |
          echo "1"
          echo "2"
          echo "3"

Special Steps With Code Blocks

Some steps has their own code blocks. For example: 'withAnt, withEnv, withCredentials, dir' or any other custom step definition which has it's own code block.

This kind of steps also can be defined as YAML.

Example definition is shown below.

pipeline:
  stages:
    - stage: "Stage"
      steps:
        script:
          - withAnt:
            script:
              - echo "No values"
          - withEnv: "['KEY=VAL']"
            script:
              - echo $KEY
          - withCredentials: "[usernamePassword(credentialsId: 'eedc7820-a4e0-4d87-a66d-b5b65ee42ad9', passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')]"
            script:
              - echo $USERNAME
          - withCredentials: "[string(credentialsId: '',variable: 'CRED')]"
            script:
              - echo $CRED

This steps can be used within their blocks as well.

pipeline:
  stages:
    - stage: "WithEnv Intertwined"
      steps:
        script:
          - withEnv: "['KEY1=VAL1']"
            script:
              - echo env.KEY1
              - withEnv: "['KEY2=VAL2']"
                script:
                  - echo env.KEY2

Custom steps can be converted to YAML format as shown below.

myCustomStep([customVariable: '']) {
    echo "some code"
}

pipeline:
  stages:
    - stage: "Stage"
      steps:
        script:
          - myCustomStep: "[customVariable: '']"
            script:
              - echo "some code"

Conversion and Validation

Before running Pipeline As Yaml, you can convert to Declarative Script and validate the pipeline. By this, errors can be prevented before running the pipelines.

For using this functionality click the Pipeline Syntax Page which is shown in the Job Menu

Click "Pipeline As YAML Converter" link

Paste your Pipeline As YAML to first text area and click "Convert To Pipeline Declarative Script" button as shown below

After successful conversion second text area will be filled Pipeline Declarative Script. For validation, click "Validate" button as shown below

Validation or error messages will be show below the button.

Reporting Issues

Please create issue in this repository.

Create Issue

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