Jenkins Pipeline or simply "Pipeline" with a capital "P" is a suite of plugins which supports implementing and integrating continuous delivery pipelines into Jenkins. A continuous delivery CD pipeline is an automated expression of your process for getting software from version control right through to your users and customers.
Every change to your software committed in source control goes through a complex process on its way to being released. This process involves building the software in a reliable and repeatable manner, as well as progressing the built software called a "build" through multiple stages of testing and deployment. Pipeline provides an extensible set of tools for modeling simple-to-complex delivery pipelines "as code" via the Pipeline domain-specific language DSL syntax.
Creating a Jenkinsfile and committing it to source control provides a number of immediate benefits:. Single source of truth [ 3 ] for the Pipeline, which can be viewed and edited by multiple members of the project. While the syntax for defining a Pipeline, either in the web UI or with a Jenkinsfile is the same, it is generally considered best practice to define the Pipeline in a Jenkinsfile and check that in to source control.
Declarative and Scripted Pipelines are constructed fundamentally differently. Declarative Pipeline is a more recent feature of Jenkins Pipeline which:.
Many of the individual syntactical components or "steps" written into a Jenkinsfilehowever, are common to both Declarative and Scripted Pipeline. Read more about how these two types of syntax differ in Pipeline concepts and Pipeline syntax overview below. Jenkins is, fundamentally, an automation engine which supports a number of automation patterns. Pipeline adds a powerful set of automation tools onto Jenkins, supporting use cases that span from simple continuous integration to comprehensive CD pipelines.
By modeling a series of related tasks, users can take advantage of the many features of Pipeline:. Code : Pipelines are implemented in code and typically checked into source control, giving teams the ability to edit, review, and iterate upon their delivery pipeline.
Durable : Pipelines can survive both planned and unplanned restarts of the Jenkins master. Pausable : Pipelines can optionally stop and wait for human input or approval before continuing the Pipeline run. Extensible : The Pipeline plugin supports custom extensions to its DSL [ 1 ] and multiple options for integration with other plugins. While Jenkins has always allowed rudimentary forms of chaining Freestyle Jobs together to perform sequential tasks, [ 4 ] Pipeline makes this concept a first-class citizen in Jenkins.
readJSON / writeJSON
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I've a jenkins job with few parameters setup and I've a JSON file in the workspace which has to be updated with the parameters that I pass through jenkins.
Now whatever the value is given by user before triggering a job has to be replaced in the job. But I'm unable to find any help on parameterizing the values.
Kindly suggest on configuring this plugin or suggest any other plugin which can serve my purpose. Config File Provider Plugin doesn't allow you to pass parameters to configuration files. You can solve your problem with any scripting language. My favorite approach is using Groovy plugin. Hit a check-box "Execute system Groovy script" and paste the following script:.
With Pipeline Utility Steps plugin this is very easy to achieve. I will keep it simple.Groovy Beginner Tutorial 21 - How to read files in groovy
A windows batch file or a shell script depending on the OS which will read the environment values and open the JSON file and make the changes. Learn more.
Writing to a json file in workspace using Jenkins Ask Question. Asked 4 years, 8 months ago. Active 1 year ago. Viewed 17k times. So when the user triggers the job, the job. Vimalraj Selvam Vimalraj Selvam 1, 1 1 gold badge 16 16 silver badges 43 43 bronze badges. Active Oldest Votes. Hit a check-box "Execute system Groovy script" and paste the following script: import groovy. Vitalii Elenhaupt Vitalii Elenhaupt 6, 1 1 gold badge 19 19 silver badges 38 38 bronze badges.
Ivan Ponomarev Ivan Ponomarev 7 7 bronze badges. I have that in my mind. But would like to see an easiest and better approach.
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Featured on Meta. Community and Moderator guidelines for escalating issues via new response….Which make sense. I am expecting "xx" in buildNumber, but when using variables it is getting written some more complex string which I don't know how that value it is been created. You can use the inspect method instead.
This will force serialization of the string, turning the interpolated string object into a regular string object. Note that you will need to disable the sandbox or approve the script from the administrative console in order to use inspect. Thanks jay hendren I found I workaround using it in this way:. Regardless that it is not straight forward to identify that since I had to check at the code to know what kind of objects they were using.
If you don't want to get approval to use "inspect " as Jay suggested, "toString " worked for me. Issues Reports Components Test sessions. Log In. XML Word Printable. Type: Bug. Status: Open View Workflow. Priority: Major. Resolution: Unresolved. Labels: None. Environment: Jenkins 2. Similar Issues:. Using this JSON file file. Hide Permalink. Show jay hendren added a comment - You can use the inspect method instead. Thanks jay hendren I found I workaround using it in this way: jsonEnvDefinition.
Andy Scollard added a comment - Show Andy Scollard added a comment - If you don't want to get approval to use "inspect " as Jay suggested, "toString " worked for me. Created: Updated: Part of the Continuous Deployment process is having a strong Pipeline. Typically, Jenkins is used to create that Pipeline. The Pipeline should automate the individual steps for each Stage of the Pipeline.
This automation requires communicating with other tools in the tool chain. Most tools today support Restful API calls as an integration point. There is a quick and dirty way to make Restful API calls by using a script, curl or wget.
Then there is the elegant way by using native Groovy. Typically the shell sh Groovy call is made. This works but is messy since you end up writing external scripts to wrapper command line calls or end up with many shell calls.
Adding error handling around the curl commands will make your Jenkinsfile file grow and be more difficult to understand.
The way to fix this is to use Groovy class files and move the coding from the Pipeline to the class. This will cleanup the Jenkins file and enable reuse. The problem with Jenkins and Groovy is that its difficult if not impossible to bring in extra Groovy libraries. See Jenkins To get around this stick with native Groovy classes and methods. Straight Groovy it will work. The Url and HttpUrlConnection classes enable the same functionality as HttpBuilder but you need to add more code to handle Headers and Cookie processing.
The error checking and parsing are done in the class so the Jenkinsfile has little to do other than being the driver of the Pipeline. Look at the var folder for the full deployhub.
Rest API Code. JsonSlurper ; return jsonSlurper. Integer statusCode. JsonSlurper .The following plugin provides functionality available through Pipeline-compatible steps. Read more about how to integrate steps into your Pipeline in the Steps section of the Pipeline Syntax page. For a list of other such plugins, see the Pipeline Steps Reference page.
View this plugin on the Plugins site. The username and private key credential used to authenticate with the ACS clusters master node. The username and key credentials can be updated from Azure Portal.
Determine if the Docker credentials archive upload path specified above is shared among all the agents. With the help of the shared storage, we only need to upload the Docker credentials archive to the shared storage once, and all the agent nodes get the access to the resource immediately.
Only absolute path is allowed here. Environment variable substitution is enabled for the path input. If not specified, the plugin will generate a path specific for the build with the following pattern. The plugin will generate the docker credentials archive with the credentials provided, and upload the archive to the given path for all the agents.
You can use it to construct the URI used in your Marathon application definition. You can use this in your Marathon application definition when the "Enable Variable Substitution in Config" option is enabled. This helps when the upload path is not filled and generated by the build, or if the path changes frequently. You can use this in your Kubernetes configuration to reference the updated secret when the "Enable Variable Substitution in Config" option is enabled.
Note that once the secret is created, it will only be updated by the plugin. You have to manually delete it when it is not used anymore. If this is a problem, you may use fixed name so every time the job runs, the secret gets updated and no new secret is created. When this value is set and each requested environment exists, an UpdateEnvironment call will be triggered as the Application Version is created.
Jenkins supplies some environment variables that can be used from within the build script. Disabling usage of Ant-Contrib Tasks in this build step. This value will be passed to AppScan Source as the scan workspace. AppScan Source assessment and working files will be stored in this directory.The following plugin provides functionality available through Pipeline-compatible steps. Read more about how to integrate steps into your Pipeline in the Steps section of the Pipeline Syntax page.
For a list of other such plugins, see the Pipeline Steps Reference page. View this plugin on the Plugins site. Find files in the current working directory. The step returns an array of file info objects who's properties you can see in the below example. Ant style pattern of file paths that should match. If this property is set all descendants of the current working directory will be searched for a match and returned, if it is omitted only the direct descendants of the directory will be returned.
Reads a file in the current working directory or a String as a plain text. Path to a file in the workspace from which to read the CSV data. Data is accessed as a List of String Arrays. You can only specify file or textnot both in the same invocation. A string containing the CSV formatted data.
The returned object is a normal Map with String keys or a List of primitives or Map. Path to a file in the workspace from which to read the JSON data. Data could be access as an array or a map. A string containing the JSON formatted data. Reads a Jar Manifest file or text and parses it into a set of Maps. The returned data structure has two properties: main for the main attributes, and entries containing each individual section except for main. Optional path to a file to read.
It could be a plain text.
Adding a GitHub Webhook in Your Jenkins Pipeline
In the latter cases the manifest will be extracted from the archive and then read. Reads a Maven project file. The returned object is a Model. Avoid using this step and writeMavenPom. It is better to use the sh step to run mvn goals. For example:. Optional path to the file to read.
If left empty the step will try to read pom. Reads a file in the current working directory or a String as a plain text Java Properties file. The returned object is a normal Map with String keys. The returned objects are standard Java objects like List, Long, String, The path of the base directory to extract the zip to. Leave empty to extract in the current working directory.
Ant style pattern of files to extract from the zip. Leave empty to include all files and directories. Suppress the verbose output that logs every single file that is dealt with. Read the content of the files into a Map instead of writing them to the workspace.
The keys of the map will be the path of the files read. Test the integrity of the archive instead of extracting it.The following examples are sourced from the the pipeline-examples repository on GitHub and contributed to by various members of the Jenkins project. This shows usage of a simple build wrapper, specifically the AnsiColor plugin, which adds ANSI coloring to the console output.
This is a simple demonstration of how to archive the build output artifacts in workspace for later use. This is a simple demonstration of how to download dependencies, upload artifacts and publish build info to Artifactory. Read the full documentation here. This is a simple demonstration of how to run a Gradle build, that resolves dependencies, upload artifacts and publish build info to Artifactory.
This is a simple demonstration of how to run a Maven build, that resolves dependencies, upload artifacts and publish build info to Artifactory. Plugin works in such a way as to make the configuration available for the entire duration of the build across all the build agents that are used to execute the build.
Shows how to allocate the same workspace on multiple nodes using the External Workspace Manager Plugin. Before using this script, you must configure several prerequisites. A starting guide may be found in the prerequisites section, from the plugin's documentation. Additional examples can be found on the plugin's documentation pagealong with all the available features.
The git plugin exposes some environment variables to a freestyle job that are not currently exposed to a Pipeline job. Here's how to recover that ability using a git command and Pipeline's sh step.
The IRC protocol is simple enough that you can use a pipeline shell step and nc to send a message to an irc room.
You will need to customize the script to use the actual room, server, and authentication details. A very simple example demonstrating how the load method allows you to read in Groovy files from disk or from the web and then call the code in them. An example showing how to build a standard maven project with specific versions for Maven and the JDK.
An example showing how to search for a list of existing jobs and triggering all of them in parallel. Calling other jobs is not the most idiomatic way to use the Worflow DSL, however, the chance of re-using existing jobs is always welcome under certain circumstances. An example showing how to take a list of objects and transform it into a map of steps to be run with the parallel command.