Gitlab触发jenkins并获取项目post参数

jenkins -- Generic Webhook Trigger插件

此插件是git webhook的高阶应用，安装后会暴露出来一个公共API，GWT插件接收到 JSON 或 XML 的 HTTP POST 请求后，根据我们配置的规则决定触发哪个Jenkins项目。
定义需要的变量

此插件有两种配置方式

1.图形界面配置-创建流水线任务在触发器中配置（本文不采用此法）

2.pipeline 脚本中配置-注意此方法需要手动触发一次构建任务生成 Generic Webhook Trigger配置

jenkins配置

1.安装插件

勾选Generic Webhook Trigger后，点击【Install without restart】安装插件。

2.创建Jenkins任务

在Jenkins Dashboard中，点击【新建任务】

输入任务名称，选择流水线类型后，点击确定创建任务。

点击刚才创建好的任务。

点击【配置】。

选择【流水线】。

3.pipeline内容

pipeline {
    agent any
    riggers{
        GenericTrigger(
            genericVariables:[
                [key:'event_name',value:'$.event_name'],//触发动作  pubat or tag_pubat
                [key:'user_email',value:'$.user_email'],//GitLab公共邮箱需要自行配置否则获取不到
                [key:'project_name',value:'$.project.name'],//项目名称 DevOps_Test
                [key:'git_url',value:'$.project.git_http_url'],//git_url http://xxx.xxx.xxx/devops/DevOps_Test.git
                [key:'ref',value:'$.ref'],//分支或tag信息
                [key:'group_name',value:'$.project.namespace'],//GITLAB_GROUP
                [key:'commits_id',value:'$.commits[0].id'] //gitlab commits id
            ],token:"qazwsx",//gitlab webhook触发token 多个任务配置同一个token会一起触发
            causeString:'Triggered on $ref',printContributedVariables:true,printPostContent:true
        )
    }

    stages {
        stage('Hello') {
            steps {
                echo 'Hello World'
            }
        }
    }
}

gitlab传递的post数据是json格式

{
  "object_kind": "push","event_name": "push","before": "a2e3c8d96b30967da1fa9579096d52c2b3757d2a","after": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d","ref": "refs/heads/master","checkout_sha": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d","message": null,"user_id": 324,"user_name": "h_y","user_username": "h_y","user_email": "","user_avatar": null,"project_id": 3199,"project": {
    "id": 3199,"name": "hello","description": "","web_url": "http://gitlab.example.com/h_y/hello","avatar_url": null,"git_ssh_url": "git@gitlab.example.com:h_y/hello.git","git_http_url": "http://gitlab.example.com/h_y/hello.git","namespace": "h_y","visibility_level": 0,"path_with_namespace": "h_y/hello","default_branch": "master","ci_config_path": null,"homepage": "http://gitlab.example.com/h_y/hello","url": "git@gitlab.example.com:h_y/hello.git","ssh_url": "git@gitlab.example.com:h_y/hello.git","http_url": "http://gitlab.example.com/h_y/hello.git"
  },"commits": [
    {
      "id": "9ff547f1010f40c54aefe693d32c026cfc7d8f4d","message": "type\n","title": "type","timestamp": "2020-05-28T15:09:37+08:00","url": "http://gitlab.example.com/h_y/hello/-/commit/9ff547f1010f40c54aefe693d32c026cfc7d8f4d","author": {
        "name": "h_y","email": "h_y@example.com"
      },"added": [

      ],"modified": [
        "Jenkinsfile"
      ],"removed": [

      ]
    },{
      "id": "a49de07609ad97132c0c42aca35c75694ab80085","timestamp": "2020-05-28T15:08:47+08:00","url": "http://gitlab.example.com/h_y/hello/-/commit/a49de07609ad97132c0c42aca35c75694ab80085",{
      "id": "a2e3c8d96b30967da1fa9579096d52c2b3757d2a","timestamp": "2020-05-28T15:07:58+08:00","url": "http://gitlab.example.com/h_y/hello/-/commit/a2e3c8d96b30967da1fa9579096d52c2b3757d2a","removed": [

      ]
    }
  ],"total_commits_count": 3,"push_options": {
  },"repository": {
    "name": "hello","visibility_level": 0
  }
}