Question

如何让Jenkins从Jenkinsfile中的命令生成的控制台输出中提取值？

具体来说，如何让Jenkins从以下非常简单的Jenkins文件中checkout scm命令的结果中提取提交哈希？

<小时/>的 Jenkinsfile <小时/>

node {
    // Clean workspace before doing anything
    deleteDir()
    try {
        stage ('Clone') {
            checkout scm    
        }
    } catch (err) {
        currentBuild.result = 'FAILED'
        throw err
    }
}

输出checkout scm命令：

在上面简化的Jenkins文件中运行checkout scm命令后，Jenkins日志会打印以下内容：

Cloning the remote Git repository
Cloning with configured refspecs honoured and without tags
Cloning repository http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git
 > git init /var/jenkins_home/workspace/le-repo_sample-issue-branch-2WOFDGRDQWR367VAM7O26H2DKPTRVPDKRTGNRIS4AQNNFP7QIX2Q # timeout=10
Fetching upstream changes from http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git  
 > git --version # timeout=10  
 using GIT_ASKPASS to set credentials 
 > git fetch --no-tags --progress http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git +refs/heads/sample-issue-branch:refs/remotes/origin/sample-issue-branch
 > git config remote.origin.url http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/sample-issue-branch:refs/remotes/origin/sample-issue-branch # timeout=10
 > git config remote.origin.url http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git # timeout=10
Fetching without tags
Fetching upstream changes from http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git  
using GIT_ASKPASS to set credentials 
 > git fetch --no-tags --progress http://<bitbucket-ip-on-lan>:7990/scm/JSP/jenkinsfile-simple-repo.git +refs/heads/sample-issue-branch:refs/remotes/origin/sample-issue-branch
Checking out Revision 77cf12f42136efc77fecbcd1f761a54254278cb3 (sample-issue-branch)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 77cf12f42136efc77fecbcd1f761a54254278cb3
Commit message: "add whitespace"
 > git rev-list --no-walk e975fb4391677bc09f2056b3e8a6be62eda0b222 # timeout=10
[Bitbucket] Notifying commit build result

重申问题：

具体来说，我们将什么添加到Jenkins文件中，以便日志在最后另外打印出以下内容：

Commit hash is:  77cf12f42136efc77fecbcd1f761a54254278cb3

这显然过于简化了。现实生活中的打印输出将进入变量并作为参数传递到脚本中。但是对于这个OP，具体的语法将使Jenkins能够提取提交哈希值吗？

Answer 1

如果你需要特别提交哈希，结账步骤的documentation提到了一种简单的方法来获取它（而不是解析控制台输出等）：

此步骤返回SCM插件将在a中设置的任何变量的Map 自由式工作，所以如果你的SCM是git，你可以这样做：
    def scmVars = checkout scm
    def commitHash = scmVars.GIT_COMMIT

    // or

    def commitHash = checkout(scm).GIT_COMMIT

一旦你在一个变量中拥有它，只需回应它就可以在日志中看到它。

echo "Commit hash is: ${commitHash}"

Jenkinsfile如何从控制台输出中提取值？

1 个答案: