= Jenkins Pipeline Shared Library Gradle Plugin :toc: :supports-gradle: 5.0+ :github-repo-id: jenkins-pipeline-shared-libraries-gradle-plugin :uri-github-releases: https://github.com/mkobit/{github-repo-id}/releases :uri-jenkins-test-harness: https://github.com/jenkinsci/jenkins-test-harness.git :uri-jenkins-shared-library-docs: https://jenkins.io/doc/book/pipeline/shared-libraries/ :uri-jenkins-pipeline-unit: https://github.com/lesfurets/JenkinsPipelineUnit :uri-consumer-example: https://github.com/mkobit/jenkins-pipeline-shared-library-example :uri-build-status-image: https://circleci.com/gh/mkobit/{github-repo-id}/tree/master.svg?style=svg :circle-ci-status-badge: image:{uri-build-status-image}["CircleCI", link="https://circleci.com/gh/mkobit/{github-repo-id}/tree/master"] :uri-version-badge-image: https://img.shields.io/maven-metadata/v/https/plugins.gradle.org/m2/com/mkobit/jenkins/pipelines/jenkins-pipeline-shared-libraries-gradle-plugin/maven-metadata.xml.svg?label=Gradle Plugin Portal :uri-gradle-support-badge-image: https://img.shields.io/badge/Supports%20Gradle-{supports-gradle}-blue.svg :supports-gradle-badge: image:{uri-gradle-support-badge-image}["Gradle Version"] :uri-gradle-plugin-portal: https://plugins.gradle.org/plugin/com.mkobit.jenkins.pipelines.shared-library :uri-zenhub-badge: https://raw.githubusercontent.com/ZenHubIO/support/master/zenhub-badge.png :version-badge: image:{uri-version-badge-image}["Plugin Version", link="{uri-gradle-plugin-portal}"] :zenhub-badge: image:{uri-zenhub-badge}["ZenHub Badge", link="https://www.zenhub.com/"]

{circle-ci-status-badge} {version-badge} {supports-gradle-badge} {zenhub-badge}

NOTE: This documentation is for the HEAD of the repository. To see documentation at a specific version see the link:{uri-github-releases}[GitHub Releases page]

== Purpose

This plugin intends to help with development of link:{uri-jenkins-shared-library-docs}[Shared Libraries].

.Features

• Basic Groovy compilation to validate source code
• Unit test using link:{uri-jenkins-pipeline-unit}[Jenkins Pipeline Unit]
• Usage of plugin and Jenkins core classes in library
• @Grab support for libraries (testing limited to @JenkinsRule style integration tests due to link:https://stackoverflow.com/questions/4611230/no-suitable-classloader-found-for-grab[an issue])
• @NonCPS annotation can be used in main source code
• Source code generation to assist with development (for example, com.mkobit.jenkins.pipelines.codegen.LocalLibraryRetriever)
• Integration test using the link:{uri-jenkins-test-harness}[Jenkins Test Harness]
• Code completion in IDE

== Example Consumer

See the link:{uri-consumer-example}[example repository] for a demonstration of using this plugin.

== 5 minute onboarding

. Consume plugin from Gradle plugin portal + [source, kotlin]

plugins { id("com.mkobit.jenkins.pipelines.shared-library") version "x.x.x" }

. Set up preferred test dependencies (for example, JUnit or Spock) + [source, groovy]

repositories { jcenter() }

dependencies { testImplementation(group: 'junit', name: 'junit', version: '4.12') }

. Write some shared library code + .Library class - src/com/mkobit/LibHelper.groovy [source, groovy]

package com.mkobit

class LibHelper { private script LibHelper(script) { this.script = script }

void sayHelloTo(String name) { script.echo("LibHelper says hello to $name!") } }

.Global variable - vars/myGlobal.groovy [source, groovy]

def call() { echo 'Hello from myGlobal' }

. Write integration tests by utilizing a local JenkinsRule and setting up the shared library + .Integration tests - test/integration/groovy/com/mkobit/JenkinsGlobalLibraryUsageTest.groovy [source, groovy]

package com.mkobit

import com.mkobit.jenkins.pipelines.codegen.LocalLibraryRetriever import org.jenkinsci.plugins.workflow.libs.GlobalLibraries import org.jenkinsci.plugins.workflow.libs.LibraryConfiguration import org.jenkinsci.plugins.workflow.libs.LibraryRetriever import org.jenkinsci.plugins.workflow.cps.CpsFlowDefinition import org.jenkinsci.plugins.workflow.job.WorkflowJob import org.jenkinsci.plugins.workflow.job.WorkflowRun import org.junit.Before import org.junit.Rule import org.junit.Test import org.jvnet.hudson.test.JenkinsRule

class JenkinsGlobalLibraryUsageTest {

@Rule public JenkinsRule rule = new JenkinsRule()

@Before void configureGlobalLibraries() { rule.timeout = 30 final LibraryRetriever retriever = new LocalLibraryRetriever() final LibraryConfiguration localLibrary = new LibraryConfiguration('testLibrary', retriever) localLibrary.implicit = true localLibrary.defaultVersion = 'unused' localLibrary.allowVersionOverride = false GlobalLibraries.get().setLibraries(Collections.singletonList(localLibrary)) }

@Test void testingMyLibrary() { CpsFlowDefinition flow = new CpsFlowDefinition(''' import com.mkobit.LibHelper

    final libHelper = new LibHelper(this)
    libHelper.sayHelloTo('mkobit')
'''.stripIndent(), true)
WorkflowJob workflowJob = rule.createProject(WorkflowJob, 'project')
workflowJob.definition = flow
WorkflowRun result = rule.buildAndAssertSuccess(workflowJob)
rule.assertLogContains('LibHelper says hello to mkobit!', result)

}

@Test void testingMyGlobalVar() { CpsFlowDefinition flow = new CpsFlowDefinition(''' import myGlobal

    myGlobal()
'''.stripIndent(), true)
WorkflowJob workflowJob = rule.createProject(WorkflowJob, 'project')
workflowJob.definition = flow
WorkflowRun result = rule.buildAndAssertSuccess(workflowJob)
rule.assertLogContains('Hello from myGlobal', result)

} }

== Configuring Versions

The sharedLibrary extension can be used to add additional plugin dependencies, Groovy version dependency, Jenkins Core dependency, etc. As of right now, most of the workflow-type plugins are automatically added based on default or configured versions. See the code for full details, but here is an example of what you can configure:

.Groovy build script - build.gradle [source, kotlin]

sharedLibrary { coreVersion = "2.86" testHarnessVersion = "2.24" pluginDependencies { workflowCpsGlobalLibraryPluginVersion = "2.8" dependency("io.jenkins.blueocean", "blueocean-web", "1.2.4") } }

NOTE: Due to link:https://github.com/gradle/kotlin-dsl/issues/380[kotlin-dsl/380], you will nee to use the .set methods instead of assignment. For example, coreVersion.set("2.86") is required.

== Limitations/Restrictions

=== Jenkins Public Default Repository

The repository at https://repo.jenkins-ci.org is added to the repository list to retrieve the Jenkins artifacts. This decision was made to simplify first use by new consumers.

If you do not wish to use this default, remove the repository after applying the plugin.

[source, kotlin]

repositories.removeIf { it.name == "JenkinsPublic" }

Then, you can add your own repository in normal Gradle fashion.

=== Consuming the Gradle Configurations

There are several configurations that are created to group the different types of Jenkins dependencies used in this plugin. It is not recommended that you consume/extendsFrom these configurations as they may be changed underneath. Instead, use the configurations for each source set and make alterations to them (like link:https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/SourceSet.html#getImplementationConfigurationName--[`sourceSets.integrationTest.implementationConfigurationName`] and link:https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/SourceSet.html#getRuntimeOnlyConfigurationName--[`sourceSets.integrationTest.runtimeOnlyConfigurationName`]). If you have a specific use case please file an issue.