詹金斯输油管，如果不行的话

我正在创建一个示例 Jenkins 管道，这里是代码。

pipeline {
agent any


stages {
stage('test') {
steps {
sh 'echo hello'
}
}
stage('test1') {
steps {
sh 'echo $TEST'
}
}
stage('test3') {
if (env.BRANCH_NAME == 'master') {
echo 'I only execute on the master branch'
} else {
echo 'I execute elsewhere'
}
}
}
}

此管道将因下列错误日志而失败

Started by user admin
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 15: Not a valid stage section definition: "if (env.BRANCH_NAME == 'master') {
echo 'I only execute on the master branch'
} else {
echo 'I execute elsewhere'
}". Some extra configuration is required. @ line 15, column 9.
stage('test3') {
^


WorkflowScript: 15: Nothing to execute within stage "test3" @ line 15, column 9.
stage('test3') {
^

但是当我执行以下示例 从这个网址时，它会成功执行并打印 else 部分。

node {
stage('Example') {
if (env.BRANCH_NAME == 'master') {
echo 'I only execute on the master branch'
} else {
echo 'I execute elsewhere'
}
}
}

我能看到的唯一区别是，在工作示例中没有 stages，但在我的示例中有。

这里出了什么问题，有人能给点建议吗？

272688 次浏览
小开
最佳答案

your first try is using declarative pipelines, and the second working one is using scripted pipelines. you need to enclose steps in a steps declaration, and you can't use if as a top-level step in declarative, so you need to wrap it in a script step. here's a working declarative version:

pipeline {
agent any


stages {
stage('test') {
steps {
sh 'echo hello'
}
}
stage('test1') {
steps {
sh 'echo $TEST'
}
}
stage('test3') {
steps {
script {
if (env.BRANCH_NAME == 'master') {
echo 'I only execute on the master branch'
} else {
echo 'I execute elsewhere'
}
}
}
}
}
}

you can simplify this and potentially avoid the if statement (as long as you don't need the else) by using "when". See "when directive" at https://jenkins.io/doc/book/pipeline/syntax/. you can also validate jenkinsfiles using the jenkins rest api. it's super sweet. have fun with declarative pipelines in jenkins!

小开

It requires a bit of rearranging, but when does a good job to replace conditionals above. Here's the example from above written using the declarative syntax. Note that test3 stage is now two different stages. One that runs on the master branch and one that runs on anything else.

stage ('Test 3: Master') {
when { branch 'master' }
steps {
echo 'I only execute on the master branch.'
}
}


stage ('Test 3: Dev') {
when { not { branch 'master' } }
steps {
echo 'I execute on non-master branches.'
}
}
小开 
        if ( params.build_deploy == '1' ) {
println "build_deploy 是 ${params.build_deploy}"
jobB = build job: 'k8s-core-user_deploy', propagate: false, wait: true, parameters: [
string(name:'environment', value: "${params.environment}"),
string(name:'branch_name', value: "${params.branch_name}"),
string(name:'service_name', value: "${params.service_name}"),
]
println jobB.getResult()
}
小开

If you wanted to create a condition to execute only a stage based on expression you can use keyword when

stage ('test3'){
when { expression { return env.BRANCH_NAME == 'master'} }
steps {
echo 'I only execute on the master branch.'
}
}
}

With the expression key word you can add any condition.

e.g. if stage is dependent on generated file in workspace.

stage ('File Dependent stage'){
when { expression { return fileExists ('myfile') } }
steps {
echo "file exists"
}
}
}

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