Jenkins CD VM部署实践 02 根据版本文件下载制品

CD在早些团队里面，如果没有使用自动化的时候，开发给包给到运维，运维将包拷贝到服务器上面之后，通过一些脚本将包启动。

CD

之前CI将版本文件上传到了gitlab，现在要将这个版本文件下载下来，因为这里面存储着要发布的包的名称，所以CD流水线有两个步骤，一个是下载制品，另外一个步骤就是发布制品。

要从Gitlab里面去下载这个版本文件

添加选项参数：针对于不同的环境，选择要发布的环境

发布的主机

def projectId = 17
def filePath = "myapp/release-${params.releaseVersion}.yaml"
def branchName = "main"



pipeline {
    agent any

    stages {
        stage('Hello') {
            steps {
                script{
                    response = GetRepoFile(projectId,"myapp%2frelease-1.1.1.yaml",branchName)
                    println(response)
                }
            }
        }
    }
}


// 封装HTTP
def HttpReq(reqType, reqUrl,reqBody ){
            def gitServer = "http://139.198.166.235:81/api/v4"
            withCredentials([string(credentialsId: 'ecbcd399-da69-4802-8760-87a1c1ff58a1', variable: 'GITLABTOKEN')]) {
                response = httpRequest acceptType: 'APPLICATION_JSON_UTF8', 
                                consoleLogResponseBody: true, 
                                contentType: 'APPLICATION_JSON_UTF8', 
                                customHeaders: [[maskValue: false, name: 'PRIVATE-TOKEN', value: "${GITLABTOKEN}"]], 
                                httpMode: "${reqType}", 
                                url: "${gitServer}/${reqUrl}", 
                                wrapAsMultipart: false,
                                requestBody: "${reqBody}"
 
    }
    return response
}
 
 
//获取文件内容
def GetRepoFile(projectId,filePath, branchName ){
   //GET /projects/:id/repository/files/:file_path/raw
   apiUrl = "/projects/${projectId}/repository/files/${filePath}/raw?ref=${branchName}"
   response = HttpReq('GET', apiUrl, "")
 
   return response.content
 
}

"myapp%2frelease-1.1.1.yaml" 这里有个转义符代表/，如果定义为变量就这样写：def filePath = "myapp%2frelease-1.1.1.yaml"    或者def filePath = "myapp%2frelease-${params.releaseVersion}.yaml"

  可以看到上面获取到了制品信息，现在就是去下载制品了

def projectId = 17
def filePath = "myapp%2frelease-${params.releaseVersion}.yaml"
def branchName = "main"



pipeline {
  agent {
     label 'build'
  }

    stages {
        stage('GetArtifactUrl') {
            steps {
                script{
                    response = GetRepoFile(projectId,filePath,branchName)
                    //println(response)

                    yamlData = readYaml text: """${response}"""
                    env.artifactUrl = yamlData.artifact
                    println(env.artifactUrl)
                }
            }
        }
        stage('DownloadArtifact') {
            steps {
                script{
                   withCredentials([usernamePassword(credentialsId: 'ff93f4bf-9d8c-4fc2-bccd-3e614f10d643', 
                   passwordVariable: 'passwd', 
                   usernameVariable: 'user')]) {
                       sh """
                          wget --http-user=${user} --http-passwd=${passwd} ${env.artifactUrl}
                         """
                  }
                }
            }
        }
    }
}


// 封装HTTP
def HttpReq(reqType, reqUrl,reqBody ){
            def gitServer = "http://139.198.166.235:81/api/v4"
            withCredentials([string(credentialsId: 'ecbcd399-da69-4802-8760-87a1c1ff58a1', variable: 'GITLABTOKEN')]) {
                response = httpRequest acceptType: 'APPLICATION_JSON_UTF8', 
                                consoleLogResponseBody: true, 
                                contentType: 'APPLICATION_JSON_UTF8', 
                                customHeaders: [[maskValue: false, name: 'PRIVATE-TOKEN', value: "${GITLABTOKEN}"]], 
                                httpMode: "${reqType}", 
                                url: "${gitServer}/${reqUrl}", 
                                wrapAsMultipart: false,
                                requestBody: "${reqBody}"
 
    }
    return response
}
 
 
//获取文件内容
def GetRepoFile(projectId,filePath, branchName ){
   //GET /projects/:id/repository/files/:file_path/raw
   apiUrl = "/projects/${projectId}/repository/files/${filePath}/raw?ref=${branchName}"
   response = HttpReq('GET', apiUrl, "")
 
   return response.content
 
}

[root@jenkins-agent workspace]# cd nexus/
[root@jenkins-agent nexus]# ls
nexus-api-test      nexus-chajian-download      nexus-chajian-upload      nexus-deploy-mvn  release-file@tmp  test@tmp
nexus-api-test@tmp  nexus-chajian-download@tmp  nexus-chajian-upload@tmp  release-file      test
[root@jenkins-agent nexus]# cd test
[root@jenkins-agent test]# ls
acmp-myapp-service-1.1.1.jar

制品拿到之后就是发布了

前端项目编译完之后是一个静态的资源文件，是一个压缩包，相对于拷贝到nginx服务器的站点目录下面，然后解压就ok了。后端项目就有一个脚本专门启动，后端项目需要写服务启动脚本。

扩展： 如何清除工作目录？ 安装​​Workspace Cleanup​​​插件。在Pipeline 的Post中的always添加​​CleanWs()​​ 

用来在build开始前或build完成后清理workspace。

      post {
        always{
            script {
                cleanWs()
            }
        }
    }