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2023-05-21
实践: Jenkins Core Api & Job DSL创建项目
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在大规模的Jenkins实践中创建项目也是一个问题，如何通过模板自动化的创建Jenkins项目呢? 可以通过安装Job Dsl插件后，通过 Dsl直接创建项目。也可以通过工具将dsl转换为xml，然后再通过Jenkins API创建项目。相对比较第一种方式更加直接一些，由于时间问题今天暂时分享第二种创建项目的方式。
1.根据Job DSL API生成模板
我们需要先安装好Job Dsl 插件，然后执行DSL创建项目。地址：https://jenkinsci.github.io/job-dsl-plugin/
例如： 使用官网的example。这里定义了一个流水线项目，配置了项目的信息包括(项目描述、项目参数、Jenkinsfile地址)
复制pipelineJob("test-schdule-service") {
description("this is my first job")
keepDependencies(false)
parameters {
choiceParam("test", [1, 2, 3], "")
}
definition {
cpsScm {
scm {
git {
remote {
github("https://gitlab.com/xxx/xxx.git", "https")
credentials("24982560-17fc-4589-819b-bc5bea89da77")
}
branch("*/master")
}
}
scriptPath("Jenkinsfile")
}
}
disabled(false)
}
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2.通过Playground转换DSL -> XML
url: http://job-dsl.herokuapp.com/
3.通过Jenkins Core Api创建项目
复制import javax.xml.transform.stream.StreamSource
import jenkins.model.Jenkins
//创建项目
void createOrUpdateJob(String name, String xml) {
def j = Jenkins.instance
String fullName = name
if(name.contains(/)) {
j = j.getItemByFullName(name.tokenize(/)[0..-2])
name = name.tokenize(/)[-1]
}
Jenkins.checkGoodName(name)
if(j.getItem(name) == null) {
println "Created job \"${fullName}\"."
j.createProjectFromXML(name, new ByteArrayInputStream(xml.getBytes()))
j.save()
}
else if(j.getItem(name).configFile.asString().trim() != xml.trim()) {
j.getItem(name).updateByXml(new StreamSource(new ByteArrayInputStream(xml.getBytes())))
j.getItem(name).save()
println "Job \"${fullName}\" already exists. Updated using XML."
}
else {
println "Nothing changed. Job \"${fullName}\" already exists."
}
}
try {
//just by trying to access properties should throw an exception
itemName == null
xmlData == null
isPropertiesSet = true
} catch(MissingPropertyException e) {
println ERROR Can\t create job.
println ERROR Missing properties: itemName, xmlData
return
}
String xmlData = """<!-- 1. test-schdule-service -->
<flow-definition>
<actions></actions>
<description>this is my first job</description>
<keepDependencies>false</keepDependencies>
<properties>
<hudson.model.ParametersDefinitionProperty>
<parameterDefinitions>
<hudson.model.ChoiceParameterDefinition>
<choices class=java.util.Arrays$ArrayList>
<a class=string-array>
<string>1</string>
<string>2</string>
<string>3</string>
</a>
</choices>
<name>test</name>
<description></description>
</hudson.model.ChoiceParameterDefinition>
</parameterDefinitions>
</hudson.model.ParametersDefinitionProperty>
<com.coravy.hudson.plugins.github.GithubProjectProperty>
<projectUrl>https://github.com/https://gitlab.com/xxx/xxx.git/</projectUrl>
</com.coravy.hudson.plugins.github.GithubProjectProperty>
</properties>
<triggers></triggers>
<definition class=org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition>
<scriptPath>Jenkinsfile</scriptPath>
<lightweight>false</lightweight>
<scm class=hudson.plugins.git.GitSCM>
<userRemoteConfigs>
<hudson.plugins.git.UserRemoteConfig>
<url>https://github.com/https://gitlab.com/xxx/xxx.git.git</url>
<credentialsId>24982560-17fc-4589-819b-bc5bea89da77</credentialsId>
</hudson.plugins.git.UserRemoteConfig>
</userRemoteConfigs>
<branches>
<hudson.plugins.git.BranchSpec>
<name>*/master</name>
</hudson.plugins.git.BranchSpec>
</branches>
<configVersion>2</configVersion>
<doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
<gitTool>Default</gitTool>
<browser class=hudson.plugins.git.browser.GithubWeb>
<url>https://github.com/https://gitlab.com/xxx/xxx.git/</url>
</browser>
</scm>
</definition>
<disabled>false</disabled>
</flow-definition>
"""
String itemName = "my-first-pipeline"
createOrUpdateJob(itemName, xmlData)
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4.通过Jenkins Script Console运行
创建完成
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