jenkins pipeline script basic

作者: AppleLin_cdea | 来源:发表于2021-10-14 10:56 被阅读0次

jenkins pipeline script basic
pipeline报org.jenkinsci.plugins.s
Jenkins pipeline script 脚本
Jenkins 流水线构建学习 —— 前端篇
jenkins pipeline基础语法与示例
Jenkins实践指南-05-Jenkins pipeline
Jenkins Pipeline语法实例
4.jenkins_pipeline粗略使用
Pipeline As Code With Jenkins2.0
Pipeline介绍

2021年10月14日10:29:56 星期四
pipeline script groovy 基础，注意点

错误代码示例 1. 传参没有注意“字符串”要加引号

Definition Pipeline script

node(demo_slave)
{
    stage('show_ip')
    {
        sh """!/bin/bash -xe
            ip -o -4 a
        """
    }
}

运行日志

Console Output
10:25:02 Started by user apple
10:25:02 Running in Durability level: MAX_SURVIVABILITY
10:25:02 [Pipeline] Start of Pipeline
10:25:02 [Pipeline] End of Pipeline
10:25:03 hudson.remoting.ProxyException: groovy.lang.MissingPropertyException: No such property: demo_slave for class: WorkflowScript
10:25:03 at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)

错误显示 No such property: demo_slave
实际上配置了 jenkins slave node 名字是 'demo_slave',
如果要在 script 中使用 node(node_name)来用 demo_slave,
要注意加引号 node('demo_slave'),
如果不加引号，就表示引用的是变量，如果没有定义变量，就会报上面的错误。

修改代码

node_name='demo_slave'
node(node_name)
{
    stage('show_ip')
    {
        sh """!/bin/bash -xe
            ip -o -4 a
        """
    }
}

运行 Console Output

10:40:15 Started by user apple
10:40:15 Running in Durability level: MAX_SURVIVABILITY
10:40:15 [Pipeline] Start of Pipeline
10:40:15 [Pipeline] node
10:40:15 Running on demo_slave in /home/jenkins/workspace/demo_slave
10:40:15 [Pipeline] {
10:40:16 [Pipeline] stage
10:40:16 [Pipeline] { (show_ip)
10:40:16 [Pipeline] sh
10:40:16 + !/bin/bash -xe
10:40:16 /home/jenkins/workspace/demo_slave@tmp/durable-04a6f628/script.sh: 1: /home/jenkins/workspace/demo_slave@tmp/durable-04a6f628/script.sh: !/bin/bash: not found
10:40:16 [Pipeline] }
10:40:16 [Pipeline] // stage
10:40:17 [Pipeline] }
10:40:17 [Pipeline] // node
10:40:17 [Pipeline] End of Pipeline
10:40:18 ERROR: script returned exit code 127
10:40:18 Finished: FAILURE

这个报错是 !/bin/bash 前面少了个 # 注释符

正确代码

node_name='demo_slave'
node(node_name)
{
    stage('show_ip')
    {
        sh """#!/bin/bash -xe
            ip -o -4 a
        """
    }
}

Console Output

10:46:54 Started by user apple
10:46:54 Running in Durability level: MAX_SURVIVABILITY
10:46:55 [Pipeline] Start of Pipeline
10:46:55 [Pipeline] node
10:46:55 Running on target_ubuntu_h620_182 in /home/jenkins/workspace/demo
10:46:55 [Pipeline] {
10:46:55 [Pipeline] stage
10:46:55 [Pipeline] { (show_ip)
10:46:55 [Pipeline] sh
10:46:56 + ip -o -4 a
10:46:56 1: lo inet 127.0.0.1/8 scope host lo\ valid_lft forever preferred_lft forever
10:46:56 2: eno1 inet 192.168.1.8/24 brd 192.168.1.255 scope global dynamic eno1\ valid_lft 1249488sec preferred_lft 1249488sec
10:46:56 [Pipeline] }
10:46:56 [Pipeline] // stage
10:46:56 [Pipeline] }
10:46:56 [Pipeline] // node
10:46:56 [Pipeline] End of Pipeline
10:46:57 Finished: SUCCESS

总结

注意语法规范（使用变量，使用字符串，不能搞混了）
要细心，程序是严格遵循语法的，你写错了一个标点、多写了、少写了，程序是会报错，它是不讲人情，六亲不认的。所以写代码编程要严谨。
重要的事说三遍：基础很重要，多听、多读、多写，就是练习，练习，再练习。刻意练习难题，把心思精力放在上面，思考。知其然，知其所以然。
遵循定理原理，发挥想象探索。

错误代码 2：要注意不能使用无中生有（没有定义的）变量

node_name='demo_slave'
node(node_name)
{
    stage('log')
    {
        script.archiveArtifacts artifacts: "logs/*", fingerprint: true
    }
}

Console Output

11:39:00 Started by user apple
11:39:00 Running in Durability level: MAX_SURVIVABILITY
11:39:00 [Pipeline] Start of Pipeline
11:39:00 [Pipeline] node
11:39:01 Running on target_ubuntu_518_dm1_100 in /home/jenkins/workspace/demo
11:39:01 [Pipeline] {
11:39:01 [Pipeline] stage
11:39:01 [Pipeline] { (log)
11:39:01 [Pipeline] }
11:39:01 [Pipeline] // stage
11:39:02 [Pipeline] }
11:39:02 [Pipeline] // node
11:39:02 [Pipeline] End of Pipeline
11:39:02 hudson.remoting.ProxyException: groovy.lang.MissingPropertyException: No such property: script for class: WorkflowScript

报错显示 No such property: script for class: WorkflowScript
说明 script 这个是无中生有（没有定义的变量），在 WorkflowScript 空间直接使用 archiveArtifacts 就可以

正确代码

node_name='demo_slave'
node(node_name)
{
    stage('log')
    {
        archiveArtifacts artifacts: "logs/*", fingerprint: true
    }
}

Console Output

11:48:22 Started by user apple
11:48:22 Running in Durability level: MAX_SURVIVABILITY
11:48:22 [Pipeline] Start of Pipeline
11:48:22 [Pipeline] node
11:48:22 Running on demo_slave in /home/jenkins/workspace/demo
11:48:22 [Pipeline] {
11:48:23 [Pipeline] stage
11:48:23 [Pipeline] { (log)
11:48:23 [Pipeline] archiveArtifacts
11:48:23 Archiving artifacts
11:48:23 Recording fingerprints
11:48:25 [Pipeline] }
11:48:25 [Pipeline] // stage
11:48:25 [Pipeline] }
11:48:25 [Pipeline] // node
11:48:25 [Pipeline] End of Pipeline
11:48:27 Finished: SUCCESS

错误3： map 要先定义，后设置

错误代码

import groovy.transform.Field

@Field def g_detailed_results = [:]
class CLOG implements Serializable
{
    def script
    
    def CLOG(WorkflowScript)
    {
        this.script = WorkflowScript
    }

    def test_map()
    {
        def mode_result='COV'
        script.g_detailed_results["${mode_result}"]['KEY'] = 'key'
    }
}

node_name='demo_slave'
node(node_name)
{
    stage('log')
    {
        clog=new CLOG(this)
        clog.test_map()
    }
}

Console Output

15:18:20 Started by user apple
15:18:20 Running in Durability level: MAX_SURVIVABILITY
15:18:20 [Pipeline] Start of Pipeline
15:18:20 [Pipeline] node
15:18:20 Running on demo_slave in /home/jenkins/workspace/demo
15:18:21 [Pipeline] {
15:18:21 [Pipeline] stage
15:18:21 [Pipeline] { (log)
15:18:21 [Pipeline] }
15:18:21 [Pipeline] // stage
15:18:21 [Pipeline] }
15:18:21 [Pipeline] // node
15:18:22 [Pipeline] End of Pipeline
15:18:23 java.lang.NullPointerException: Cannot set property 'KEY' on null object

报错 Cannot set property 'KEY' on null object，
因为 g_detailed_results["${mode_result}"] 没有定义，所以它是 null object，我们要把它当 map 使用，所以就要在使用前定义它

script.g_detailed_results["${mode_result}"] = [:]

正确代码

import groovy.transform.Field

@Field def g_detailed_results = [:]
class CLOG implements Serializable
{
    def script
    
    def CLOG(WorkflowScript)
    {
        this.script = WorkflowScript
    }

    def test_map()
    {
        def mode_result='COV'
        script.g_detailed_results["${mode_result}"] = [:]
        script.g_detailed_results["${mode_result}"]['KEY'] = 'key'
    }
}

node_name='demo_slave'
node(node_name)
{
    stage('log')
    {
        clog=new CLOG(this)
        clog.test_map()
    }
}

Console Output

15:35:35 Started by user apple
15:35:35 Running in Durability level: MAX_SURVIVABILITY
15:35:35 [Pipeline] Start of Pipeline
15:35:36 [Pipeline] node
15:35:36 Running on demo_slave in /home/jenkins/workspace/demo
15:35:36 [Pipeline] {
15:35:36 [Pipeline] stage
15:35:36 [Pipeline] { (log)
15:35:37 [Pipeline] }
15:35:37 [Pipeline] // stage
15:35:37 [Pipeline] }
15:35:37 [Pipeline] // node
15:35:37 [Pipeline] End of Pipeline
15:35:37 Finished: SUCCESS

总结

不能想那当然的使用无中生有的代码（没有定义的代码），要遵守编程规范，不然，就会出低级和莫名其妙的问题。
注意基础，注意仔细。

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jenkins pipeline script basic

错误代码示例 1. 传参没有注意“字符串”要加引号

Definition Pipeline script

运行日志

修改代码

运行 Console Output

正确代码

总结

错误代码 2：要注意不能使用无中生有（没有定义的）变量

正确代码

错误3： map 要先定义，后设置

总结

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jenkins pipeline script basic

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Jenkins pipeline script 脚本

Jenkins 流水线构建学习 —— 前端篇

jenkins pipeline基础语法与示例

Jenkins实践指南-05-Jenkins pipeline

Jenkins Pipeline语法实例

4.jenkins_pipeline粗略使用

Pipeline As Code With Jenkins2.0

Pipeline介绍

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