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A Tour of the Jenkins(Hudson too) API

=====================================

By whichever name you like, this build server provides a rich set of APIs you can trigger remotely in a variety of ways. This project explores the APIs and provides some simple examples of how to get things done.

Highlights of the JSON/XML APIs

  • extracting information from builds
  • triggering builds
  • remote shutdown of server

Examples

Get the names of all Jobs from the server

@GrabResolver(name = 'glassfish', root = 'http://maven.glassfish.org/content/groups/public/')
@GrabResolver(name = "github", root = "http://kellyrob99.github.com/Jenkins-api-tour/repository")
@Grab('org.kar:hudson-api:0.2-SNAPSHOT')
@GrabExclude('org.codehaus.groovy:groovy')
import org.kar.hudson.api.JSONApi

String rootUrl = 'http://localhost:8080'
JSONApi api = new JSONApi()
def hudsonInfo = api.inspectApi(rootUrl)
hudsonInfo.jobs.each{ job ->
    println job.name
}

Highlights of the CLI jar

  • installing plugins
  • executing Groovy scripts on the server

Examples

Get the names of all Jobs from the server

@GrabResolver(name = 'glassfish', root = 'http://maven.glassfish.org/content/groups/public/')
@GrabResolver(name = "github", root = "http://kellyrob99.github.com/Jenkins-api-tour/repository")
@Grab('org.kar:hudson-api:0.2-SNAPSHOT')
@GrabExclude('org.codehaus.groovy:groovy')
import org.kar.hudson.api.cli.HudsonCliApi

String rootUrl = 'http://localhost:8080'
HudsonCliApi cliApi = new HudsonCliApi()
OutputStream out = new ByteArrayOutputStream()
cliApi.runCliCommand(rootUrl, ['groovysh', 'hudson.jobNames.inspect()'], System.in, out, System.err)
List allJobs = Eval.me(cliApi.parseResponse(out.toString()))
println allJobs

List all installed Plugins and failed Builds

def listPlugins = 'Hudson.instance.pluginManager.plugins.each { \
println("${it.longName} - ${it.version}") };'

def allFailedBuilds = '''hudsonInstance = Hudson.instance
allItems = hudsonInstance.items
activeJobs = allItems.findAll{job -> job.isBuildable()}
failedRuns = activeJobs.findAll{job -> job.lastBuild && job.lastBuild.result == Result.FAILURE}
failedRuns.each{run -> println(run.name)}'''

def parseableAllFailedBuilds = '''hudsonInstance = Hudson.instance
allItems = hudsonInstance.items
activeJobs = allItems.findAll{job -> job.isBuildable()}
failedRuns = activeJobs.findAll{job -> job.lastBuild && job.lastBuild.result == Result.FAILURE}
[activeJobs:activeJobs?.collect{it.name}, failedRuns:failedRuns?.collect{it.name}].inspect()'''

[listPlugins, allFailedBuilds, parseableAllFailedBuilds].each{ script ->
    cliApi.runCliCommand(rootUrl, ['groovysh', script])
}

Getting the library

The jar built from this project is published on this site as a maven artifact. Here's how you can use it in your choice of build system.

Gradle

Add the following to build.gradle:

repositories{
    mavenCentral()
    maven {
        url 'http://maven.glassfish.org/content/groups/public/'
    }
    maven {
        url 'http://kellyrob99.github.com/Jenkins-api-tour/repository'
    }
}
dependencies {
    groovy "org.codehaus.groovy:groovy-all:${versions.groovy}"
    compile 'org.kar:hudson-api:0.2-SNAPSHOT'
}

Maven

Add the following to pom.xml:

<repositories>
    <repository>
        <id>glassfish</id>
        <name>glassfish</name>
        <url>http://maven.glassfish.org/content/groups/public/</url>
    </repository>
    <repository>
        <id>github</id>
        <name>Jenkins-api-tour maven repo on github</name>
        <url>http://kellyrob99.github.com/Jenkins-api-tour/repository</url>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy-all</artifactId>
        <version>${groovy.version}</version>
    </dependency>
    <dependency>
        <groupId>org.kar</groupId>
        <artifactId>hudson-api</artifactId>
        <version>0.2-SNAPSHOT</version>
    </dependency>
</dependencies>

Groovy Grapes

Use these annotations in a Groovy script:

@GrabResolver(name='glassfish', root='http://maven.glassfish.org/content/groups/public/')
@GrabResolver(name="github", root="http://kellyrob99.github.com/Jenkins-api-tour/repository")
@Grab('org.kar:hudson-api:0.2-SNAPSHOT')
@GrabExclude('org.codehaus.groovy:groovy')

This project is made available under the Apache 2.0 license, , I hope you find value and have fun with it! http://www.apache.org/licenses/LICENSE-2.0