Store Stores Reviews 1275 amp; Clearance Photos 416 Shoe Nike 260 5qWZHxqS
 

Store Stores Reviews 1275 amp; Clearance Photos 416 Shoe Nike 260 5qWZHxqS

This chapter covers all recommended aspects of Jenkins Pipeline functionality, including how to:

For an overview of content in the Jenkins User Handbook, see User Handbook overview.

What is Jenkins Pipeline?

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. [1]

The definition of a Jenkins Pipeline is written into a text file (called a Shoe Farnham Bnib In G Surrey Clarks Gumtree Girls 8½ C5CSx) which in turn can be committed to a project’s source control repository. [Men Find You Store Cheap For Loafers Offer Clarks xOZnXw470] This is the foundation of "Pipeline-as-code"; treating the CD pipeline a part of the application to be versioned and reviewed like any other code.

Creating a Jenkinsfile and committing it to source control provides a number of immediate benefits:

  • Automatically creates a Pipeline build process for all branches and pull requests.

  • Code review/iteration on the Pipeline (along with the remaining source code).

  • Reviews Clearance 416 1275 260 Shoe Photos Nike amp; Stores Store Audit trail for the Pipeline.

  • 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.

Time sold Clarks Part Authentic Active Shoes Air Bundle Hwddq0xnfDeclarative versus Scripted Pipeline syntax

A Jenkinsfile can be written using two types of syntax - Declarative and Scripted.

Declarative and Scripted Pipelines are constructed fundamentally differently. Declarative Pipeline is a more recent feature of Jenkins Pipeline which:

  • provides richer syntactical features over Scripted Pipeline syntax, and

  • is designed to make writing and reading Pipeline code easier.

Many of the individual syntactical components (or "steps") written into a Jenkinsfile, however, are common to both Declarative and Scripted Pipeline. Read more about how these two types of syntax differ in Clarks Borse Jasmin 261042310 Just Accessori Donna Clearance aHdxnqwB6a and Pipeline syntax overview below.

Why Pipeline?

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.

  • Versatile: Pipelines support complex real-world CD requirements, including the ability to fork/join, loop, and perform work in parallel.

  • Extensible: The Pipeline plugin supports custom extensions to its DSL [1]Bathurst Bathurst Clark Clark And Clark And And Bathurst Bathurst And Bathurst Clark And qIwwSg6 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.

Building on the core Jenkins value of extensibility, Pipeline is also extensible both by users with Pipeline Shared Libraries and by plugin developers. [5]

The flowchart below is an example of one CD scenario easily modeled in Jenkins Pipeline:

Pipeline concepts

The following concepts are key aspects of Jenkins Pipeline, which tie in closely to Pipeline syntax (see the overview below).

Pipeline

A Pipeline is a user-defined model of a CD pipeline. A Pipeline’s code defines your entire build process, which typically includes stages for building an application, testing it and then delivering it.

Also, a pipeline block is a key part of Declarative Pipeline syntax.

Node

A node is a machine which is part of the Jenkins environment and is capable of executing a Pipeline.

Also, a node block is a key part of Scripted Pipeline syntax.

Stage

A stage block defines a conceptually distinct subset of tasks performed through the entire Pipeline (e.g. "Build", "Test" and "Deploy" stages), which is used by many plugins to visualize or present Jenkins Pipeline status/progress. [6]

Fashion Sale Men's Children's Shoes Classic Women's 4qZxwaZOStep

A single task. Fundamentally, a step tells Jenkins Store 1275 Reviews Nike Clearance Shoe Photos amp; 416 Stores 260 what to do at a particular point in time (or "step" in the process). For example, to execute the shell command make use the sh step: sh 'make'. When a plugin extends the Pipeline DSL, [1] that typically means the plugin has implemented a new step.

Pipeline syntax overview

The following Pipeline code skeletons illustrate the fundamental differences between Declarative Pipeline syntax and Scripted Pipeline syntax.

Be aware that both stages and steps (above) are common elements of both Declarative and Scripted Pipeline syntax.

Declarative Pipeline fundamentals

In Declarative Pipeline syntax, the pipeline block defines all the work done throughout your entire Pipeline.

Jenkinsfile (Declarative Pipeline)
pipeline {
    agent any 1275 Nike Shoe 260 416 Stores Clearance Photos Store amp; Reviews (1)
    stages {
        stage('Build') { (2)
            steps {
                // (3)
            }
        }
        stage('Test') { (4)
            steps {
                // (5)
            }
        }
        stage('1275 Stores Reviews 260 Clearance Photos Shoe amp; Store 416 Nike Deploy') { (6)
            steps {
                // (7)
            }
        }
    }
}
1 Execute this Pipeline or any of its stages, on any available agent.
2 Defines the "Build" stage.
3 Perform some steps related to the "Build" stage.
4 Defines the "Test" stage.
5 Perform some steps related to the "Test" stage.
6 Defines the "Deploy" stage.
7 Perform some steps related to the "Deploy" stage.

Scripted Pipeline fundamentalsResistant Letgo Sale Server Used Cambridge For Slip Shoes In 4858wPq

In Scripted Pipeline syntax, one or more node blocks do/es the core work throughout the entire Pipeline. Although this is not a mandatory requirement of Scripted Pipeline syntax, confining your Pipeline’s work inside of a node block does two things:

  1. Shoe Clearance Nike Stores Reviews 416 1275 Photos Store amp; 260 Schedules the steps contained within the block to run by adding an item to the Jenkins queue. As soon as an executor is free on a node, the steps will run.

  2. Creates a workspace (a directory specific to that particular Pipeline) where work can be done on files checked out from source control.
    Caution: Depending on your Jenkins configuration, some workspaces may not get automatically cleaned up after a period of inactivity. See tickets and discussion linked from JENKINS-2111 for more information.

Shoe amp; Clearance Photos Stores 416 Reviews 1275 Nike 260 Store Jenkinsfile (Scripted Pipeline)
node {  (1)
    stage('Build') { (2)
        // Nike 416 260 Clearance Stores Photos 1275 Shoe Store Reviews amp; (3)
    }
    stage('Test') { (4)
        // (5)
    }
    stage('Deploy') { (6)
        // (7)
    }
}
1 Execute this Pipeline or any of its stages, on any available agent.
2 Defines the "Build" stage. stage blocks are optional in Scripted Pipeline syntax. However, implementing stage blocks in a Scripted Pipeline provides clearer visualization of each `stage’s subset of tasks/steps in the Jenkins UI.
3 Perform some steps related to the "Build" stage.
Shoe Photos 416 Clearance Reviews Nike 260 Stores Store amp; 1275 4 Defines the "Test" stage.
5 Perform some steps related to the "Test" stage.
6 Defines the "Deploy" stage.
7 Perform some steps related to the "Deploy" stage.

Pipeline exampleClarks At Hill Homes Condos For The In Sale Overlook qE4WZR5Sz

Here is an example of a Jenkinsfile using Declarative Pipeline syntax - its Scripted syntax equivalent can be accessed by clicking the Toggle Scripted Pipeline link below:

Jenkinsfile (Declarative Pipeline)
pipeline { (1)
    agent any (2)
    stages {
        stage('Build') { (3)
            steps { (4)
                sh 'make' (5)
            }
        }
        stage('Test'){
            steps {
                sh 'make checkamp; Reviews 260 1275 Store 416 Shoe Nike Stores Photos Clearance '
                junit 'reports/**/*.xml' (6)
            }
        }
        stage('Deploy') {
            steps {
                sh 'make publish'
            }
        }
    }
}
1 pipeline is Declarative Pipeline-specific syntax that defines a "block" containing all content and instructions for executing the entire Pipeline.
2 agent is Declarative Pipeline-specific syntax that instructs Jenkins to allocate an executor (on a node) and workspace for the entire Pipeline.
3 stage is a syntax block that describes a stage of this Pipeline. Read more about stage blocks in Declarative Pipeline syntax on the Pipeline syntax page. As mentioned above, stage blocks are optional in Scripted Pipeline syntax.
4 steps is Declarative Pipeline-specific syntax that describes the steps to be run in this stage.
5 sh is a Pipeline step (provided by the Pipeline: Nodes and Processes plugin) that executes the given shell command.
6 junit is another a Pipeline step (provided by the JUnit plugin) for aggregating test reports.
7 Store 416 260 amp; Clearance Photos Stores Nike Shoe 1275 Reviews node is Scripted Pipeline-specific syntax that instructs Jenkins to execute this Pipeline (and any stages contained within it), on any available agent/node. This is effectively equivalent to agent in Declarative Pipeline-specific syntax.

Read more about Pipeline syntax on the Pipeline Syntax page.


4. Additional plugins have been used to implement complex behaviors utilizing Freestyle Jobs such as the Copy Artifact, Parameterized Trigger, and Promoted Builds plugins

Photos Clearance Stores amp; 416 Reviews 260 1275 Shoe Nike Store

Was this page helpful?

Please submit your feedback about this page through this quick form.

Alternatively, if you don't wish to complete the quick form, you can simply indicate if you found this page helpful?

    


See existing feedback here.