Jenkins 流水线语法 05 构建时变量 environment

env 构建时变量

 之前讲的是全局变量，现在是构建时候自己定义所运行的一些变量

• 定义： 通过键值对（k-v）格式定义流水线在运行时的环境变量， 分为流水线级别和阶段级别。(可以使用enviorment语句块里面去写我们的变量，不需要加逗号分割，每行就是一个变量)

流水线级别环境变量参考：(全局变量，在pipeline下面定义的语句块，在这里面的变量在下面所有的阶段都可以去使用)

pipeline {
    environment {
        NAME = "zeyang"
        VERSION = "1.1.10"
        ENVTYPE = "DEV"
    }
}

阶段级别环境变量参考：（局部变量，在某个阶段里面定义的变量，那么只能在某个阶段去使用）

pipeline {
    ...
    ...
    stages {
        stage("build"){
            environment {              
              VERSION = "1.1.20"
            }
            steps {
                script {
                    echo "${VERSION}"
                }
            }
        }
    }
}

 全局变量

pipeline {
    agent any

    environment{
      VERSION = "1.1.1"
      ENV_TYPE = "DEV"
    }

    stages {
        stage('Hello') {
            steps {
                script{
                    echo "The variable version is ${VERSION}"
                    echo "The variable env_type is ${ENV_TYPE}"
                }
            }
   
        }
    }

}


Started by user admin
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/jenkins_home/workspace/pipeline-test
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Hello)
[Pipeline] script
[Pipeline] {
[Pipeline] echo
The variable version is 1.1.1
[Pipeline] echo
The variable env_type is DEV
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

这里是在stage里面定义了变量，也就是局部变量 

pipeline {
    agent any

    environment{
      VERSION = "1.1.1"
      ENV_TYPE = "DEV"
    }

    stages {
        stage('Hello') {
        
            environment{
                VERSION="1.0.0"
            }

            steps {
                script{
                    echo "The variable version is ${VERSION}"
                    echo "The variable env_type is ${ENV_TYPE}"
                }
            }
   
        }
    }

}


Started by user admin
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/jenkins_home/workspace/pipeline-test
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Hello)
[Pipeline] withEnv
[Pipeline] {
[Pipeline] script
[Pipeline] {
[Pipeline] echo
The variable version is 1.0.0
[Pipeline] echo
The variable env_type is DEV
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

 全局变量（env.JOB_NAME 这个是jenkins内置的全局变量，env.是自定义的全局环境变量，注意不要覆盖了Jenkins内置的全局变量）

pipeline {
    agent any

    environment{
      VERSION = "1.1.1"
      ENV_TYPE = "DEV"
    }

    stages {
        stage('Hello') {
        
            environment{
                VERSION="1.0.0"
            }

            steps {
                script{
                    echo "The variable version is ${VERSION}"
                    echo "The variable env_type is ${ENV_TYPE}"
                    echo "The job name is ${env.JOB_NAME}" //内置的环境变量
                    env.JOB_NAMEA="mytest-pipeline"   //自定义的全局变量,也就是整个流水线可以去使用
                    echo "the variable env.JOB_NAMEA is ${env.JOB_NAMEA}"
                }
            }
   
        }
    }

}



Started by user admin
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/jenkins_home/workspace/pipeline-test
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage (hide)
[Pipeline] { (Hello)
[Pipeline] withEnv
[Pipeline] {
[Pipeline] script
[Pipeline] {
[Pipeline] echo
The variable version is 1.0.0
[Pipeline] echo
The variable env_type is DEV
[Pipeline] echo
The job name is pipeline-test
[Pipeline] echo
the variable env.JOB_NAMEA is mytest-pipeline
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS