Jenkins groovy dynamic stages. ${JENKINS_IP} / env-vars.

Jenkins groovy dynamic stages I tried for for loop after the parallel keyword, but groovy was complaining that he wants a stage declaration at this point. graph. Nov 23, 2024 · These stages are linked together to form our complete pipeline. What I’m wondering is whether it’s possible to compose and return a declarative pipeline from shared library. ) May 10, 2019 · I have an environmental variable defined in my pipeline. 4 rolling. To understand Jenkins Pipeline, we need to first understand its anatomy, which is fundamental to software development. Let’s see an example of a Jenkins pipeline that has multiple stages: Sep 18, 2020 · The trick for formatting a text input box is to format the HTML in a way that reflects the HTML Jenkins uses to display parameters in a job submission form. Because it’s (obviously) a bad idea to put credentials directly into a Jenkinsfile, Jenkins Pipeline allows users to quickly and safely access pre-defined credentials in the Jenkinsfile without ever needing to know their values. Because of which they are retaining previous builds Jul 10, 2019 · Prepare Stageで、他のstageをラップしています。 これにより、配列を展開するGroovy処理を記述できるようになっています。 アレンジ版 map利用. Sep 20, 2020 · I found out how to create input parameters dynamically from this SO answer agent any stages { stage(&quot;Release scope&quot;) { steps { script { This is now possible: pipeline { agent any stages { stage('1') { steps { sh 'exit 0' } } stage('2') { steps { catchError(buildResult: 'SUCCESS', stageResult Mar 12, 2024 · Jenkins Version: Jenkins 2. Nov 6, 2023 · Jenkins is an open-source automation server that facilitates the building, testing, and deployment of software applications. The test containers must lock up the node name as db username for the tests. Stages and steps . "env. 249. version=1. Then, when your Pipeline reaches the stage with input, it will no longer be using an agent’s Jul 27, 2021 · I have few parallel stages under which there are multiple sequential stages. I would like a Jenkinsfile that adds stages dynamically as below, but uses the parallel construct at the stage level. Sep 17, 2016 · The concepts of node, stage and step are different: node specifies where something shall happen. jenkinsfile scripts to generate the stage{} definitions for a pipeline a Oct 16, 2016 · Recently the Pipeline team began making several changes to improve the stage step and increase control of concurrent builds in Pipeline. Aug 26, 2024 · To access Jenkins pipeline environment variables within a Groovy script, you can use the env object followed by the variable name (e. but I wonder if this solution has a downside: In the 'Final' stage the node agent is indeed the right one, but when I want to run a shell script on the agent, if I do it in the script block (the one just below the node block) it will run on the main agent and not the slave(!). You should be able to generate a more dynamic list with the code that creates the ${WORKSPACE}/list file Jun 28, 2022 · I’m trying to figure out something about declarative pipelines. 3. 1. However you can set the ones you like in your Jenkins file first to be none and then to some interesting value. The following plugin provides functionality available through Pipeline-compatible steps. restart your pipeline from that stage, or set stage options, just to name those two things. Feb 3, 2024 · Groovy, a powerful language for the Java platform, adds flexibility and power to Jenkins, making your CI/CD pipeline more dynamic and responsive. Jun 4, 2020 · The following simplified Jenkinsfile dynamically generates sequentially executed stages; however, I cannot create a post step for these dynamically stages, like so: pipeline { agent none s If set, and Jenkins is set to poll for changes, Jenkins will pay attention to included and/or excluded files and/or folders when determining if a build needs to be triggered. Only thing that differs within those stages is few environment variables. – Sep 1, 2023 · I have a function which create dynamically stages from the map variable and they run in the parallel. Until now the stage step has been the catch-all for functionality related to the flow of builds through the Pipeline: grouping build steps into visualized stages, limiting concurrent builds, and discarding stale builds. agent { node { label 'labelName' } } behaves the same as agent { label 'labelName' }, but node allows for additional options (such as customWorkspace). Read more about how to integrate steps into your Pipeline in the Steps section of the Pipeline Syntax page. Scripted pipelines use groovy threads to run parallel stages. FlowInterruptedException) is thrown, which leads in aborting the build (unless it is caught and processed somehow). At the core of a Jenkins pipeline are stages and steps. 440. But I want to run this function also when I need to create dynamically stages Jun 25, 2021 · jenkins-groovy; jenkins-job-dsl; jenkins-declarative-pipeline; Share. Jul 31, 2024 · The example above demonstrates how choosing an agent for the builds to run on can be dynamic. Condition in a step of a declarative pipeline's stage. You give a name or a label, and Jenkins runs the block there. However, often you are not aware of all the parameters in the beginning or sometimes you want to render the parameters dynamically based on the value selected in any other parameter. We started by understanding the basics of Jenkins pipelines and the distinction between static and dynamic stages. html/ // Substitute JENKINS_IP with the IP address of the digital ocean droplet hosting our Jenkins server. First, we looked at the basic concepts and execution of the Jenkins pipeline job and its stages. These stages are sequential. steps. // allocate a Disk from the Disk Pool defined in the Jenkins global config def extWorkspace = exwsAllocate 'diskpool1' // on a node labeled 'linux', perform code checkout and build the project node ('linux') {// compute complete workspace path, from current node to the allocated disk exws (extWorkspace) {// checkout code from repo checkout scm // build project, but skip running tests sh 'mvn Apr 27, 2016 · You may not place the deprecated non-block-scoped stage (as in the original question) inside parallel. To use this method, we perform two steps: Create a Groovy script file (e. Check Blue Ocean UI and see that the stage injected that way does not provide the same features as a regular declarative stage. nodes. This is useful, for instance, when defining stages within a matrix, so that the stage names can contain the values of the axes. ${JENKINS_IP} / env-vars. simplified example (just compiler and architecture): the user wants to build the following variants: "vc15-x64"; "vc16-x64"; "vc15-ARM"; "vc16-ARM" This should be achieved with 2 axis: axis_1_values "vc-15", "vc-16" axis_2_values "x64", "ARM" the axes block should create all possible variants of it (like written Mar 16, 2023 · i wanted to run code like this , basically i wanted to run two stages in parallel and also the commands in those stages should run in parallel in itself. Currently I have this script, the important is a the end in the “stage(‘Tests’)” with the test category 1 and category 2. --- I am using these env. yaml&#39; // this file existed in my repo } &hellip; Mar 23, 2018 · I've been reaching to a point that I really want to use iteration to save redundant code on stage level when building multi-platforms. Finally, we also explored the benefits of running stages in parallel. The pipeline below works fine pipeline { agent { kubernetes { yamlFile 'Jenkins-agent-pod. 0 fix=alfa Mar 25, 2019 · (It works with parallel stages, because parallel method expects a map where each entry value is a closure, so it iterates over all map entries and invokes collected closures). FlowNode import org. Even still this approach doesn't present an opportunity for my use case however since Jenkins seems to preempt the scripts by an upfront variable substitution with what's known at the scripts interpreter stage. The components that constitute a Jenkins pipeline contribute to its structured and automated nature. My Jenkins installed Kubernetes plugin. After that, we ran multiple parallel stages in a Jenkins pipeline job. Dec 12, 2017 · My software has currently 6 modules which have several stages they run through: compile, unit tests, integration tests, sonarqube analysis, war file creation. Checkout fetches source code, Build compiles it, Test checks for bugs, and Deploy releases the software. As of JENKINS-26107, stage takes a block argument. Furthermore, we examined several common use cases for dynamic stages, including generating stages based on Git branches, creating stages from configuration files, and implementing dynamic parallel stages. Do I need to learn a new language? Jenkins uses a DSL (domain-specific language) called Declarative Pipeline syntax. I saw almost all stackoverflow posts which show how we can successfully run parallel steps/stages (using list/maps etc) --OR hardcoding them directly --OR even create dynamic stages for Jenkinsfile (as seen in this post: Scripted jenkinsfile parallel stage) I am trying to set up a matrix build and am running in several issues. The fact that each stage’s node can run on a different machine based on a variable passed to it, really makes the possibilities endless. If the time limit is reached, an exception (org. Then, we delved into the practical aspect of creating dynamic stages using Groovy scripts and Jenkins DSL. Jul 2, 2018 · With sequential stages, you can instead use agent none at the top-level of the Pipeline, and group the stages using a common agent and running before the stage with the input directive together under a parent stage with the required agent specified. I have wasted several days trying to make it work: no matter wha May 21, 2017 · I run multiple build and test containers on the same build nodes. Dec 1, 2023 · Hi all, I’m Jenkins newbie. When not at work he enjoys contributing to These libraries may be marked “trusted“, meaning they can run any methods in Java, Groovy, Jenkins internal APIs, Jenkins plugins, or third-party libraries. I have a declarative pipeline script for my multibranch project in which I would like to read a text file and store the result as a string variable to be accessed by a later step in the pipeline. . groovy) in the Jenkins home directory; Define a function that returns the desired value Nov 18, 2021 · 碰到一个奇怪的问题， 我的Jenkins pipeline, 假如是一下这份的话就不会出现问题： def testfiles def workspace = env. field". g. Please turn off your ad blocker. Nov 24, 2021 · This was already asked and answered over on StackOverflow. I'm using a combination of . JsonSlurperClasssic(). Getting Started with Jenkins and Groovy Jun 29, 2024 · In this article, we’ve explored the powerful concept of dynamic stages in Jenkins pipelines. Jan 24, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Mar 20, 2025 · Anatomy of a Jenkins P ipeline . To run parallel stages, an array of stage objects has to be created and passed as an argument to parallel keyword. Here is what your example should look like to add a non-parallel stage to the pipeline using generateStage(name) method: Apr 29, 2020 · Been working on replacing a crusty old Jenkins job recently that’s used for scaling up a load-testing environment. Below is showcasing what I'm trying to do: def map = [ See relevant content for ahadevops. Currently, it’s a good ol’ handcranked freestyle job with a 300-line bash Feb 6, 2024 · Since Jenkins uses Groovy for writing the pipeline script, we can use an if–else block within the script block. My only problem right now is that if I put two stage{. This method ensures that dynamic values are Jan 10, 2020 · I have a dynamic scripted pipeline in Jenkins that has many parallel stages, but within each stage, there are multiple serial steps. Please consider this information as replaceable Another common use for environment variables is to set or override "dummy" credentials in build or test scripts. plugins. This issue Oct 19, 2017 · There's time that users need to be able to select which stage to jump to instead of the next stage. Here is an example of a stage that will be executed based on the condition that we get from the choice parameter. Stages and Steps: Stages: Logical divisions within the pipeline, such as “Build,” “Test,” and “Deploy. pipeline { agent any environment { field = 'customfield_123' } stages { steps { script { def details = new groovy. We can have a stage that executes some commands, copies files, or deploys an artifact. Oct 29, 2024 · By following these best practices, taking advantage of Groovy’s syntax, and leveraging advanced features like parallel execution, conditional stages, and reusable functions, you can create optimized and maintainable Jenkins pipelines. Groovy is a dynamic scripting language for the Java Virtual Machine (JVM) that is well-suited for scripting I would like the ability to have stage names be dynamic strings. LabelAction def getStage(currentBuild){ def build = currentBuild. How do I do t May 15, 2024 · Photo by Clément Hélardot on Unsplash Introduction to Groovy Scripting in Jenkins. slipt() } } } } Aug 30, 2022 · Jenkins already has a list of pre-defined environment variables that you can use in your pipeline. I found a way to do something like that, but mixing both paradigms, which doesn’t seem to work well with the BlueOcean UI (multiple stages inside each parallel branch do not show up properly). You may put parallel inside stage or stage inside parallel or stage inside stage etc. Execute the Pipeline, or stage, with the given container which will be dynamically provisioned on a node pre-configured to accept Docker-based Pipelines, or on a node matching the optionally defined label parameter. To improve the performance and limit the concurrent threads I put those stages in instances of my class Step which holds minimal information about it dependents and if it's done. (Part of the problem here is that Blue Ocean doesn't render matrixes well at all. Mar 3, 2022 · I’m not sure why you would want to do that flow. } sections inside a node for some reasons the workflow stage chart and Blu Ocean get confused. com. Once you leave that stage, then they pop the scope. The output will show both jobs running simultaneously, demonstrating the primary advantage of parallel execution. Feb 25, 2022 · Creating a web service health check with Jenkins pipeline and Mattermost notification; Creating a remote docker MySQL database record validation check with Jenkins pipeline and Mattermost notification; Use multiple JDKs in one Jenkinsfile; Getting data from docker MySQL database with Jenkins pipeline and send Email as attachment Jan 21, 2020 · The code should generate all variants the sources of the plugin will be build. so when I want to reuse Aug 16, 2024 · It is intended to cover most common use-cases with a simple syntax that does not require knowledge of Groovy deep API. Jul 7, 2022 · I figure I’m doing something unorthodox here, but I’d like to stick to declarative for convenience while dynamically generating parallel steps. – Feb 3, 2024 · This script defines a basic parallel execution structure where two jobs, Job 1 and Job 2, are executed concurrently. You can't e. I am trying to define a variable dynamically based on the variable defined in the environment block. Follow You can create dynamic stages using sequential stages as below: Apr 10, 2018 · If you want to use dynamic parallel block with declarative pipeline script, you have to apply two changes to your Jenkinsfile: You have to define running_set as a Map like ["task 1": { somefunc()}, "task 2": { somefunc2() }] - keys from this map are used as parallel stages names Aug 28, 2024 · You can access a parameter at any stage of a pipeline. Jun 1, 2018 · You can even inject multiple stages to a single declarative stage, but this is abuse or anti-pattern. Detects that a node block, or certain steps inside it such as sh, failed for reasons which are likely due to infrastructure rather than the behavior of the build. For example, to run each parallel branch on a different agent, you need to use a node step, and if you do that, the output of the parallel branch won’t be available for post directives (at a stage or pipeline level). You just have to use params. Dec 7, 2023 · Jenkins' Scripted Pipeline, a dynamic Groovy scripting approach, enhances software workflow automation. While server-backup is for ALL, the others are only valid for server with having the respective role. , env. actions. ” Steps: Individual tasks within a stage, like running a shell command or checking out code from a repository. 🛠️ Key Jun 16, 2020 · I'm trying to dynamically set environment variables in the jenkins pipeline script. The matrix looks like: stage( 'BuildAll' ) { matrix { axes { axis { name 'PLATFORM' Jul 5, 2019 · Some changes have recently been released to give Pipeline authors some new tools to improve Pipeline visualizations in Blue Ocean, in particular to address the highly-voted issue JENKINS-39203, which causes all non-failing stages to be visualized as though they were unstable if the overall build result of the Pipeline was unstable. Everything is good. Groovy closures Sep 25, 2017 · While this works, it doesn’t integrate well with the rest of the Declarative Pipeline syntax. groovy and . Therefore you can programatically construct your build stages up-front, a pattern which allows flexible serial/parallel switching. I’m not sure what scenario makes sense for you to change the global ones inside the declaration of a stage. Common pitfalls when running parallel stages will be discussed in this article. Environment blocks inside a stage define variables (combined with top level/earlier levels) for that stage. Can it be done in Jenkins pipeline? For example, after stage one, users can have a choice to select May 25, 2017 · pipeline {agent any stages {stage ('Example Deploy') {when {branch 'production'} echo 'Deploying'}}}} はい、ぱっと見ただけでやっていることがわかりますね？ これはブランチが production のときにだけ、 Example Deploy stage が実行されるようになります。 Oct 8, 2017 · kind of. Mar 26, 2025 · Then, we delved into the practical aspect of creating dynamic stages using Groovy scripts and Jenkins DSL. cps. Setting Up Jenkins for Scripted Pipeline Definition node. Improve this question. Let’s take a look at the job-3 Jenkins pipeline where we’re going to define the skipBuild variable within the Groovy script and use it within an if–else block: Dec 17, 2023 · In this article, we explored how to run multiple stages in parallel with a Jenkins workflow or pipeline job. Feb 24, 2023 · But now I would like to have a dynamic number of test (ie dynamic number of stage ‘test category X’) that will depend on a given parameter given to the job. parseText(file) def data = details. 以下是執行結果與它的 Pipeline Script，可以看到被 parallel 包住的 stage 都有平行處理，且不一定只能有一個步驟。 Feb 14, 2025 · 📌 Understanding Jenkins Pipeline Structure. is there a way to do this in declarative pipeline, please let me &hellip; I have a parameterized Jenkins job which requires the input of a specific Git branch in a specific Git repo. StepStartNode import org. docker. Apr 8, 2016 · This should work from a pipeline shared library: #!/usr/bin/env groovy import hudson. 89. May 16, 2017 · use withEnv to set environment variables dynamically for use in a certain part of your pipeline (when running your node script, for example). Nov 22, 2019 · Declarative Pipeline 1. Eventually I’d like to achieve this: library 'shared Mar 28, 2018 · With Jenkins 2. WORKSPACE pipeline { agent any stages { stage(&#39;Checkout Code&#3 May 12, 2021 · Now, for the script since we want to use the AWS CLI to list all the S3 and format them appropriately, to achieve this we will use the Groovy function “execute” along with the pipe operator to Oct 27, 2020 · Jenkins Pipeline 有两种写法：&#160;Declarative 以及 Scripted，前一种使用了Jenkins基于Groovy实现的DSL，写起来相对有限制；后一种可以很好的在Jenkinsfile 中使用Groovy语句。 下面记录Scripted模式下常见的一些注意点： 1 My knowledge of groovy doesn't go very far beyond what little I know about Jenkinsfiles. Feb 12, 2023 · In order to achieve running stages in parallel in declarative Jenkins pipeline dynamically, you can implement this pattern: stages { // other stages steps { script { parallel Nov 22, 2019 · Below is a simple Jenkinsfile that dynamically adds stages using groovy code. This script consists of 3 different parts to backup: server, database, mailbox. options {buildDiscarder(logRotator(daysToKeepStr: '7', numToKeepStr: '1'))} stages { stage('Create List') { agent {node 'nodename'} steps { script { // you may create your list here, lets say reading from a file after checkout. I know that shared libraries can have entire pipelines as a last statement in call function; however, the pipeline would still have a predefined structure. getExecution() def executionHeads Mar 13, 2021 · 一個 stage 只能包含一個 parallel，且這個 stage 不能再存在 steps、stages 或 matrix。 基本使用範例. Currently this parameter is a string parameter. jenkinsci. txt as:. Well, it is obvious that one can write a code which behaves like when conditions, however both when statement and its conditions are written in java (or maybe even groovy) and, I believe, should be available from a groovy pipeline as well. May 26, 2020 · Jenkins is an automation tool commonly used for software deployment. fields. Feb 15, 2019 · The environment variables come from the system, without them probably Jenkins would not be able to run. For instance in the workflow stage chart I get NaNy NaNd and in Blue Ocean I get only the first stage. I'm trying to figure out if it's possible to have a map defined in a Jenkinsfile that can then be applied in Oct 18, 2017 · For a Declarative Pipeline it is adviced to use the timeout step in the options-section. Accessing parameters in stages is pretty straightforward. For example, let props. This allows you to define libraries that encapsulate individually unsafe APIs in a higher-level wrapper that is safe for use from any pipeline. 0-beta1 (now available from the Jenkins Experimental Update site) adds a new matrix section that lets me specify a list stages once and then run that same list in parallel on multiple configurations. This is my suggestion based on it. Each of these stages contain the steps that we need to implement to achieve the goal of the stage. [NAME] in places where you need to substitute the parameter. Jenkins provides a scripted pipeline syntax, which permits users to write Jenkins pipelines using the Groovy scripting language. Scripted pipelines in Jenkins are very adaptable and can be customized to meet specific May 10, 2017 · Using the "pipeline utility steps" plugin, you can define general vars available to all stages from a properties file. like this (replace the contents of an sh step with your node script): Thanks Bruce for sharing this. 5. Here is a copy-paste of the top answer: Feb 24, 2023 · Hi, I would like to change the number of stage and that some of them would be parallel. This article explores setup, syntax, stages, customization, and real-world cases, offering insights into efficient software delivery orchestration. Apr 8, 2023 · Groovy. Jenkins pipelines consist of stages, steps, script blocks, and tasks that define how an application is built, tested, and deployed. Jenkins 2. workflow. To aide in this cause he has been developing Jervis: Jenkins as a service which strongly focuses on onboarding people and not just technology or projects into Jenkins. Using this behaviour will preclude the faster git ls-remote polling mechanism, forcing polling to require a workspace thus sometimes triggering unwanted builds, as if you Jun 7, 2016 · So the stage myConditionalStage will only be run if triggered by a push to myBranch. However visualizations of the build are not guaranteed to support all nestings; in particular Feb 21, 2024 · The main stages in a Jenkins pipeline are Checkout, Build, Test, and Deploy. This guide will take you through the basics to more advanced uses of Groovy scripts in Jenkins, with practical examples to reinforce your understanding. vars/myCustomVar. Executes the code inside the block with a determined time out limit. getRawBuild() def execution = build. Action; import org. 1 My idea was to create some sort of dynamic backup process, that automatically detects new deployed server and adds them to a script. As JamesD suggested, you may create stages dynamically (but they will be sequential) like that: agent none. TL;DR: you must use Scripted Pipeline; Declarative does not support dynamic stages. 2 using a declarative pipeline, the following pattern prompt the user with a dynamic dropdown menu (for him to choose a branch): (the surrounding withCredentials bloc is optional, required only if your script and jenkins configuration do use credentials) Dec 2, 2019 · A Senior Software Engineer at Integral Ad Science, he develops a Jenkins solution to scale CI/CD onboarding for the entire company. Jun 2, 2021 · Using the declarative pipeline syntax, I want to be able to define parameters based on an array of repos, so that when starting the build, the user can check/uncheck the repos that should not be in Jul 19, 2018 · You're right that empty strings do not succeed in bringing a variable into scope, good catch. The easiest way to do this is to review the HTML Jenkins uses to display an existing String parameter. Stages show up as columns in the Pipeline Stage view with average stage times and colours for the stage result. vars to set few jenkins parameters in my groovy. map を利用することもできます。 stageごとに変動させたい値が2つある時便利です。 由于它是一个功能齐全的编程环境, 脚本化流水线为Jenkins用户提供了 大量的灵活性性和可扩展性。 Groovy学习曲线通常不适合给定团队的所有成员, 因此创造了声明式流水线来为编写Jenkins流水线提供一种更简单、更有主见的语法。 Nov 8, 2018 · (Imagine you have 10 stages in the pipeline and stage 7 failed because of some silly mistake and you would like to restart the build from 7th stage - in scripted pipeline you would have to re-run from the very beginning, while declarative pipeline can restart from 7th stage by remembering the results from all 6 previous stages). Hi, I figured out the same after a few failing attempts. A comprehensive list of the variables can be found by accessing the below URL on your browser. Here is how my code looks like #!groovy @Library(<sharedLib>) _ def GIT_COMMIT_EMAIL pipeline { agent none parameters { booleanParam(name: 'uninstall_package', defaultValue: false) booleanParam(name: 'install_package', defaultValue: false In Jenkins scripted pipeline, parallel() takes a Map describing each stage to be built. Jenkins:How to Achieve parallel dynamic stages in jenkins declarative pipeline. Jenkins supports this use-case by means of parameters that you can declare and use as Groovy variables in your Jenkins job. VARNAME). Jun 15, 2017 · For anyone needing a declarative pipeline syntax option, I found a good solution in another question, which helped me. Jul 16, 2024 · This approach offers greater flexibility and enables us to create dynamic variables based on logic or external factors. If the connection to an agent is broken or the agent is removed from the list of executors while in use (typically in response to the disappearance of underlying cloud resources), this condition will allow retry to allocate a fresh How do I pass variables between stages in a declarative pipeline? In a scripted pipeline, I gather the procedure is to write to a temporary file, then read the file into a variable. May 17, 2018 · I am trying to build a jenkins pipeline where I have a choice parameter with n choices and want to create a stage which does something when some values from the choice parameter are selected I have something like below but doesn't seem to work. Oct 23, 2017 · Iterating Jenkins groovy map, with multiple sets. stage structures your script into a high-level sequence. model. If you however need a condition within the steps section of a stage, you can use Groovy syntax (if/else in this case) that is used in Scripted pipelines. json. Groovy 是一种基于 Java 平台的面向对象语言。在 Jenkins Pipeline 中通常用它来增强 Pipeline 的功能。 详细的语法可以参考： Dec 4, 2023 · jenkins; groovy; jenkins-pipeline; dry I got the same problem while trying to make a dynamic multiple small stages inside a big stage. dbgeu oldhh dxpf mhko bkxyxl vwqnkuk zxcfc kvrrh bqdsao agh fbr pnndyom gnppcbv ylokls akor