jenkins job builder pipeline example

Steps. If you inject a credential associated with your Git repo, use the Snippet Generator to select the plain Git option and it will return a snippet with this gem: java ] Learn about GitOps benefits, principles, and how to get started. // We can just run it with "externalCall()" since it has a call method. examples are kept current with existing behaviour. Continuous delivery pipelines are automated sequences of processes to deliver software from version control to customers and end-users. Learn about parallel job orchestration and see a quick tutorial. It will run pep8 and pyflakes in the same // "shortDescription": "Started by user anonymous", // cf. The code looks like this. Manage application configurations, lifecycles, and deployment strategies. Additional examples can be found on the plugin's // A sleep to make sure we actually get a real difference! It's not ideal - https://issues.jenkins-ci.org/browse/JENKINS-28335, // is an open JIRA for getting the GitPublisher Jenkins functionality working, // credentialsId here is the credentials you have set up in Jenkins for pushing. Name of a downstream job to build. However, similarly configured jobs is easy. Based on Stackoverflow answer at http://stackoverflow.com/questions/33570075/tag-a-repo-from-a-jenkins-workflow-script Many organizations use Docker to set up build and test environments and deploy applications. jenkins-pipeline-builder. To create a pipeline in the Jenkins Classic UI: Log into Jenkins. Background. The Pipeline Project module handles creating Jenkins Pipeline projects (formerly known as the Workflow projects). // Read the upload spec and upload files to Artifactory. We will be defining a pipeline job that pulls the code from the public jenkinsci/pipeline-examples Git repository and run the environmentInStage.groovy declarative pipeline script found in it. We start with the. Image Source: Jenkins. Automate your deployments in minutes using our managed enterprise platform powered by Argo. There is some bug report from a couple of years ago but despite it sounds quite similar I think the . Many unit Ansi Color Build Wrapper Synopsis repository on GitHub and contributed to by various members of the Jenkins name as the YAML keyword, but should use underscores instead of "props": "p1=v1;p2=v2" Step 3 Open the jenkins_job.ini and focus on the 3 parameters marked with Red star as in the snapshot below. This example illustrates injected credentials and also username / password authentication. You can use Docker containers with minor modifications to a Jenkinsfile. You may specify pipeline in the project-type attribute of 'git push https://${GIT_USERNAME}:${GIT_PASSWORD}@ --tags'. Each of them can contain specific scripted code that performs the required operations. "pattern": "resources/Kermit. The Delivery pipeline model also allows the creation of a single reusable pipeline that lets DevOps teams build once and use everywhere. implementation. In the abve example we are printing " Hello World ". Post the completion of the workshop, number of folks walked up to me to thank me especially for conducting hands on for Jenkins Job Builder. pipeline-scm (str): in case Pipeline as code feature is used. Instead of duplicating a lot of build related code in each repo include the common one from this file using the command below: To run the unit tests, "pattern": "libs-snapshot-local/*.zip", Block 1 : scm This corresponds to the version control and its details we will be using in the Jenkins job. Adopt GitOps across multiple Kubernetes clusters. "files": [ job : String. Prerequisites: To use Jenkins Pipeline you will need Jenkins 2.x of later, and the Pipeline plugin (which may be installed by default). Here, we will be walking through the steps needed for using Jenkins Job Builder. // Run on a node with the "first-node" label. You cant get to continuous delivery or deployment without first solving continuous integration. }'''. Next, we define build steps. . This code snippet will run the same job multiple times in parallel configFile Provider plugin enables provisioning of various types of configuration files. //param1 : an example string parameter for the triggered job. Once again, navigate to the Jenkins Job DSL API Reference, click the funnel icon to bring up the Filter by Plugin menu, then deselect all the plugins . (formerly known as the Workflow projects). // This specific example does not with the current settings on freenode. ''' Each software change a developer commits in source control passes through a set of automated processes before being released to production. All the pipeline information, including the Jenkinsfile, must be in the same place (i.e., the Git repo). You can now: Prefer to use single steps (such as shell commands), and not Groovy code, for each step of the pipeline. // This shows a simple build wrapper example, using the Timestamper plugin. Lets see how to do it in the classic UI. { It is also crucial to have strong backups of every Jenkins instance to enable disaster recovery and restore corrupted or accidentally deleted files. publishers: - pipeline: project: foo-two When the foo-one job is created, the downstream connection exists within Jenkins but the Build other projects entry is 'Build other projects (Manual Step)'. // Actually run the steps in parallel - parallel takes a map as an argument, // We need to wrap what we return in a Groovy closure, or else it's invoked. Here we have names stage as " Hello ". // It uses Node and Label Parameter plugin to pass the job name to the payload job. Install pre-commit from https://pre-commit.com/#intro in order to run some prerequisites The details of the job will be as in the general, scm, builders, publishers snapshots above. Type your Pipeline code in the text area, as shown below. Learn how to create triggers and integrate workflows. statement that specifies this is a declarative pipeline. Jenkins Pipeline: Examples, Usage, and Best Practices, Jenkins Pipeline is a feature of the Jenkins build server, deployed as a plugin, that lets you implement continuous delivery (CD) pipelines on the, Here is a simple example of a scripted Jenkinsfile. circumstances. #echo PASS $USER:$MYPASSWORD *", sandbox (bool): If the script should run in a sandbox (default Step 4) Go to your Jenkins dashboard and create a view by clicking on the " + " button. // Methods in this file will end up as object methods on the object that load returns. Like other code, team members can version and review it. Codefresh is the most trusted GitOps platform for cloud-native apps. However, the password for the purpose of security is not plain text and has to be API token which can be used for making authenticated REST Api or CLI calls. auditing easier. // And a final echo to show the time when we wrap up. Jenkins admins can delete old and unwanted builds, and this will not affect operations of the Jenkins controller. You may specify ``pipeline`` in the ``project-type`` attribute of Jenkins Job Builder tool to make jobs from templates in a human readable text format and keep them in a version control system (further JJB). // Write an useful file, which is needed to be archived. It also has a flexible template system, so creating many Unit tests have been included and are in the tests folder. // Write an useless file, which is not needed to be archived. node { echo 'Hello world' } sandbox: true # Use groovy sandbox, false by default. Key Concepts, Architecture, and Pros and Cons, Jenkins X: How It Works and Creating Your First Project. Here is a simple example of a scripted Jenkinsfile. "Look at this, ${whoAreYou}! Block 5 : project This corresponds to the name of the job that this yaml will take as an argument. triggering all of them in parallel. Access details for your pipeline by clicking, Dont Use Groovy Code for Main Pipeline Functionality, Jenkins admins can delete old and unwanted builds, and this will not affect operations of the Jenkins controller. As part of The Jenkins Declarative Pipeline Tutorial, We will discuss the structure of the Declarative Pipeline first. sleep 1 There are 2 types of yaml that we will be looking at -. An example showing how to search for a list of existing jobs and // First we'll generate a text file in a subdirectory on one node and stash it. // into that new directory, rather than into the root of the build. For users of traditional CI/CD tooling, the fresh approach to software delivery is dramatically easier to adopt, more scalable, and much easier to manage with the unique hybrid model. In the above example, it corresponds to Git version control, the url and the branch. // build causes as JSON that is available inside of the Pipeline Sandbox. Best practices for building loosely coupled services. // -U : force maven to update snapshots each time (default : once an hour, makes no sense in CI). // Create an Artifactory Gradle instance. It executes via the JUnit plugin. Shows how to get the Cause(s) of a Pipeline build from within the Shows how to allocate the same workspace on multiple nodes using the When creating new YAML components, please observe the following style * Node list retrieval is being performed using Jenkins API, so it will require script approvals in the Sandbox mode. section, from the plugin's documentation. Block 3 : publishers This corresponds to the artifact that will be generated to be published. // JSON would be something like the following: // "_class\": "hudson.model.Cause$UserIdCause". Using a combination of groovy and curl from shell, send a message to slack for notifications. This was the main motivation for me to write this blog. Before using this script, you must configure several prerequisites. // This command results in output indicating several one of these and the affected files: // Added (A), Copied (C), Deleted (D), Modified (M), Renamed (R), 'git diff-tree --no-commit-id --name-status -r HEAD'. // This displays colors using the 'xterm' ansi color map. // -V : strongly recommended in CI, will display the JDK and Maven versions in use. This is useful for e.g. What Is Jenkins? May be another Pipeline job, but more commonly a freestyle or other project. However, if you dont delete old builds, you will eventually run out of resources for new releases. Read the full documentation here. *", https://issues.jenkins-ci.org/browse/JENKINS-28335, for getting the GitPublisher Jenkins functionality working with Pipeline. To create a pipeline in the Jenkins Classic UI: Thats it! review in Gerrit. More details on how you can contribute is available on our wiki at: We ask that all code submissions be pep8 and pyflakes clean. Backup creation schemes include snapshots of the file system, backup plugins, and shell scripts that back up Jenkins instances. The git plugin exposes some environment variables to a freestyle job that are not currently exposed to a Pipeline job. In the Test stage, we use JUnit to aggregate test reports. In that workshop, I had conducted hands on exercises on Jenkins Job Builder. "target": "dependencies/", Step 2: Once you open the Jenkins download page, you will be prompted to select the platform you intend to download Jenkins. '''{ If you are interested in contributing your own example, please consult the README in the repository. Purpose. //we have to assign it outside the closure or it will run the job multiple times with the same parameter "4", //and jenkins will unite them into a single run of the job. // Some IRC servers require authentication. // Get Artifactory server instance, defined in the Artifactory Plugin administration page. // To do this, you need to wrap the code below in { }, and either return. AnsiColor plugin, which adds ANSI coloring to the console output. These are optional, but highly recommended because they make it easy to understand the tasks or steps occurring in each stage. Click on Configure in the left panel to view the 1-JJB-SimpleJob configuration details. Read the full documentation here. user and url are pretty straight forward as the name suggests. Stage block descriptions are displayed in the Jenkins UI. Now click on Build now button (1) to run the Pipeline. Demonstrate how to expose the git_commit to a Pipeline job. Jenkins Pipelines offers an extensible toolset to model delivery pipelines of varying complexity. I did go through the documentation (JJB) on how to create jobs of freestyle and pipeline style. Recently, Jenkins Pipeline introduced declarative pipelines. On the other hand, they are easier to work with and do not require knowledge of Groovy code. // Set Artifactory repositories for dependencies resolution and artifacts deployment. Using this yaml, multiple jobs having same configuration but different names can be created. https://javadoc.jenkins-ci.org/hudson/model/Cause.UserIdCause.html, // These should all be performed at the point where you've, // checked out your sources on the agent. Maven will autodetect its root fine. Job Builder may be installed from the top level directory: Please do not submit GitHub pull requests, they will be automatically closed. Declarative Pipeline starts with the "Pipeline" label. The content driving this site is licensed under the Creative pipeline-examples Regardless whether I apply wrappers directly on jobs or on job templates or defaults, I can't see any effect on the generated XML. ] YAML/JSON driven jenkins job generator that lets you version your artifact pipelines alongside with the artifact source itself. Use the Pipeline Snippet Generator to generate a sample pipeline script for the build step. hyphens. The Pipeline Project module handles creating Jenkins Pipeline projects Calling other jobs is not the most idiomatic way to use the Worflow DSL, Stage block descriptions are displayed in the Jenkins UI. This shows usage of a simple build wrapper, specifically the This is a simple demonstration of how to run a Gradle build, that resolves dependencies, upload artifacts and publish build info to Artifactory. we can use groovy's built in json handling to build up the request and ship it to a command The. On 16th March, I conducted a workshop in ThoughtWorks VodQA Pune on Jenkins Pipeline As Code. "Hey, look, I'm echoing with a timestamp!". It also has a flexible template system, so creating many similarly configured jobs is easy. building the same project on multiple OS platforms. Requires the Jenkins Pipeline Plugin. How do I indicate through Jenkins Job Builder that the downstream connection to job foo-two needs to be automated? }, separate method. When this pipeline runs, Jenkins will automatically start the required container. format and uses them to configure Jenkins. Look at the 3 updated properties user, password, url. The code looks like this. The code looks like this. It shows how to use the withEnv step to define the right PATH to use the tools. however, the chance of re-using existing jobs is always welcome under certain The { echo QUIT Fix deployment problems using modern strategies and best practices. Jenkins Pipeline is a feature of the Jenkins build server, deployed as a plugin, that lets you implement continuous delivery (CD) pipelines on the Jenkins automation server. Next part of the configuration for using the Jenkins Job Builder is writing the yaml file. * The script uses NodeLabel Parameter plugin to pass the job name to the payload job. For getting the API token for the logged user, navigate to Jenkins > People > Your User > Configure or directly navigate the url http:///user//configure which in my case will be http://localhost:8080/user/shreyas/configure. E.g., build-trigger. Use a slack webhook to send an arbitrary message. conventions: This consistency will help users avoid simple mistakes when writing overwrite directories or files, etc. // Merge the upload and download build-info objects. This shows usage of a simple build wrapper, specifically the */, 'https://raw.githubusercontent.com/org-name/repo-name/master/subfolder/Jenkinsfile?token=${env.GITHUB_TOKEN}', // If there's a call method, you can just load the file, say, as "foo", and then invoke that call method with foo(), "Now we're being called more magically, ${whoAreYou}, thanks to the call() method.". click on Save In this we have Hello stage, which will execute a echo command to print "Hello World" Type an item name and select Pipeline from the list of item types. "gradle-examples/4/gradle-example-ci-server/". Other configuration parameters can be referred here. Revision efb479f0. An example showing how to take a list of objects and transform it into a usecase of that is, for example, a system test or load test that requires several workers with heavy i/o or compute. easiest way to do that is to run tox before submitting code for // The map we'll store the parallel steps in before executing them. }'''. Traditional Jenkins pipelines are scripted, meaning they prescribe the exact order of steps that need to happen in the pipeline. I'm currently trying to realize job timeouts, etc vi "wrappers" as described in the docs and some examples. "This file is useless, no need to archive it. ", 'https://github.com/jfrogdev/project-examples.git'. Trigger a new build for a given job. You may specify pipeline in the project-type attribute of the Job definition. For this Jenkins pipeline tutorial, we will be choosing Windows. // The code will require approval of several Jenkins classes in the Script Security mode, // Into each branch we put the pipeline code we want to execute, // This method collects a list of Node names from the current Jenkins instance. "props": "p1=v1;p2=v2" All YAML identifiers (including component names and arguments) git branch: 'lts-1.532', credentialsId: '82aa2d26-ef4b-4a6a-a05f-2e1090b9ce17', url: '[email protected]:jenkinsci/maven-plugin.git' Step 3: Scroll down to the Pipeline section & copy-paste your first Declarative style Pipeline code from below to the script textbox. //dummy: a parameter used to prevent triggering the job with the same parameters value. . Step 4: Click on the Save button & Click on Build Now from the left side menu. Step 2) Now, under Build Triggers, check the Build after other projects are built option. A very simple example demonstrating how the load method allows you to "files": [ '''{ Use Groovy code to chain your steps together. An example showing how to build a standard maven project with specific From Jenkins 2.5 onwards, Jenkins Pipeline has built-in support for interacting with Docker within Jenkins files. // labels for Jenkins node types we will build on, // Need to bind the label variable before the closure - can't do 'for (label in labels)', // Create a map to pass in to the 'parallel' step so we can fire all the builds at once, // build steps that should happen on all nodes go here, // This is currently the best way to push a tag (or a branch, etc) from a, // Pipeline job. // as ID can be used directly within 'configFileProvider' step too. Common scenarios that demand the usage of configuration files: The example shows simple usage of configFile Provider plugin and howto access it's contents. Let us see all these directives and blocks one by one in this . // Advice: don't define M2_HOME in general. closure from a method. patchsets. A starting guide may be found in the Unzip the downloaded kit. human readable text format in a version control system to make changes and Sample: JJB + Pipeline. This textual approach is the core of the pipeline-as-code method that treats the CD pipeline as an integral part of the application code. This is a declarative syntax that describes the steps to be run in this stage. // The script triggers PayloadJob on every node. E.g., build_trigger. // 'ID' refers to alpha-numeric value generated automatically by Jenkins. ( Note that unlike the scripted pipeline above, within each stage block is a steps statement. I've opted to do so here to show how to return a step Basically, this pipeline label opens the block where the following directives and blocks are present. versions for Maven and the JDK. hyphens. // Just some echoes to show the ANSI color. // Look, no output directory under the root! This is a simple demonstration of how to run a Maven build, that resolves dependencies, upload artifacts and publish build info to Artifactory. Copy-Paste that file and rename it to jenkins_job.ini. // Run the unstash from within that directory! manner as the automated test suite that will run on proposed This is a declarative syntax that describes the steps to be run in this stage. Continuing with the analogy, a Pipeline project is a fully functional (and thus opinionated) vehicle; no customization needed. curly braces by doubling them in the DSL: { -> {{ , otherwise it will be YAML, as well as developers when matching YAML components to Python https://jenkins-job-builder.readthedocs.io/en/latest/, https://storyboard.openstack.org/#!/project/723, https://opendev.org/jjb/jenkins-job-builder, https://groups.google.com/forum/#!forum/jenkins-job-builder, https://docs.openstack.org/infra/manual/developers.html, Use Case 3: Working with JSON job definitions. . // Get a specific Cause type (in this case the user who kicked off the build), // The JSON data is created by calling methods annotated with `@Exported` for, // each Cause type. blocks. To this end, Jenkins Pipeline lets you create shared libraries, which you can define in an external source control repo and load into your existing pipelines. The authentication step may vary between projects. The IRC protocol is simple enough that you can use a pipeline shell step and nc to send a message to an irc room. // Load the file 'externalMethod.groovy' from the current directory, into a variable called "externalMethod". // And look, output directory is there under first-stash! There are two distinct job definitions. tests samples are included as examples in our documentation to ensure that Now we define several stageblocks. jenkins_job.ini and yamls used in the above examples can be found in the Git repository here. For example, Jenkins Developers build pipelines as code using Domain-Specific Language (DSL). Block 4 : Generic job details This corresponds to the generic configuration details in the Jenkins job General tab. Click on Configure in the left panel to view the 2-JJB-SimpleJob-Template configuration details. { This is because we unlock the full potential of Argo to create a single cohesive software supply chain. This is the generic configuration that needs to be done for using the Jenkins Job Builder. Next, we define build steps. Step 1 Clone the repository using the command below, Cloned folder structure will be as in the snapshot below -, Step 2 Post cloning the repository, navigate to the folder etc which consists of .ini sample file. 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