Git学习-->关于Jenkins编译时候,如何获取Git分支的当前分支名?
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一、背景
因为代码都迁移到了Gitlab,所以Jenkins编译的时候我们都需要将之前的SVN信息换成现在的Git信息。最近编译一个Lib库的时候,因为团队规定上传Release版本的AAR到Maven的话,必须需要在Jenkins上编译而且Git Branch 必须是master分支才能够上传到Maven。
因此我们就需要在Gradle脚本中,获取Git Branch ,Git Commit等相关信息。但是在获取Git Branch的时候出现了问题,在本地Android Studio编译的时候能够获取到Git Branch的名字,但是使用Jenkins编译的时候,一直获取不到信息。
下面是我写的一份gradle文件,用于获取Git和Jenkins的相关信息
/** * 获取Git 分支名 */def getGitBranch() { return 'git symbolic-ref --short -q HEAD'.execute().text.trim()}/** * 获取Git 版本号 */def getGitSHA() { return 'git rev-parse --short HEAD'.execute().text.trim()}/** * 获取Git Tag */def getGitTag() { return 'git describe --tags'.execute([], project.rootDir).text.trim()}/** * 获取Git 提交次数 */def getGitCommitCount() { return 100 + Interger.parse('git rev-list --count HEAD'.execute([], project.rootDir).text.trim())}/** * 判断是否有jenkins */boolean isInJenkins() { Map<String, String> map = System.getenv() if (map == null) { return false } String str = map.get("Path") if (str != null) { //it's windows return false } else { str = "" Iterator it = map.iterator() while (it.hasNext()) { str += it.next() } return str.contains("jenkins") }}/** * 获取jenkins任务名 */def getJenkinsName() { boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.name = env.JOB_URL String[] stringArray = ext.name.split("/") if (stringArray.length > 0) { return stringArray[stringArray.length - 1] } else { return "Local" } } else { return "Local" }}/** * 获取Jenkins Build 号 * @return */def getJenkinsBuildCode() { boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.buildNumber = env.BUILD_NUMBER?.toInteger() return "$buildNumber" } else { return 0 }}/** * 定义几个变量,在build.gradle里面引用 */ext { gitTag = getGitTag() gitBranch = getGitBranch() gitSHA = getGitSHA() jenkinsRevision = getJenkinsBuildCode() jenkinsName = getJenkinsName()}
其中的方法,getGitBranch方法在Android Studio编译的时候,能够正常获取到Git分支名。
println "pom_version_type = " + pom_version_type println "jenkinsName = " + jenkinsName println "gitBranch = " + gitBranch
我在进行编译的时候,是会通过如上代码打印出Git Branch的信息。
在Android Studio 本地编译的时候,是可以打印出相关的信息的。
但是在Jenkins编译的时候,是不能够上传的,如下所示:
二、解决方法
后来我尝试找了很多种方法去获取Git Branch的名字,在Android Studio本地都可以获取到,如下所示:
参考链接:https://stackoverflow.com/questions/6245570/how-to-get-the-current-branch-name-in-git
方法1、git symbolic-ref --short -q HEAD
D:\GitLab Source\XTCLint>git symbolic-ref --short -q HEADmasterD:\GitLab Source\XTCLint>
方法2、git rev-parse --abbrev-ref HEAD
D:\GitLab Source\XTCLint>git rev-parse --abbrev-ref HEADmaster
方法3、git branch | grep \* | cut -d ' ' -f2
D:\GitLab Source\XTCLint>git branch | grep \* | cut -d ' ' -f2master
方法4、git symbolic-ref HEAD | sed -e "s/^refs\/heads\///"
D:\GitLab Source\XTCLint>git symbolic-ref HEAD | sed -e "s/^refs\/heads\///"master
以上所有的方法,仅仅在Android Studio的终端或者本地gradle代码中有效,然而在Jenkins服务器编译的时候都是获取为空。
后来我查看了Jenkins的Git插件上的介绍,参考链接:https://wiki.jenkins.io/display/JENKINS/Git+Plugin
如上所示,在上面的链接中有介绍,有几个Environment variables环境变量可以使用。
Environment variables
The git plugin sets several environment variables you can use in your scripts:
- GIT_COMMIT - SHA of the current
- GIT_BRANCH - Name of the remote repository (defaults to origin), followed by name of the branch currently being used, e.g. “origin/master” or “origin/foo”
- GIT_LOCAL_BRANCH - Name of the branch on Jenkins. When the “checkout to specific local branch” behavior is configured, the variable is published. If the behavior is configured as null or **, the property will contain the resulting local branch name sans the remote name.
- GIT_PREVIOUS_COMMIT - SHA of the previous built commit from the same branch (the current SHA on first build in branch)
- GIT_PREVIOUS_SUCCESSFUL_COMMIT - SHA of the previous successfully built commit from the same branch.
- GIT_URL - Repository remote URL
- GIT_URL_N - Repository remote URLs when there are more than 1 remotes, e.g. GIT_URL_1, GIT_URL_2
- GIT_AUTHOR_NAME and GIT_COMMITTER_NAME - The name entered if the “Custom user name/e-mail address” behaviour is enabled; falls back to the value entered in the Jenkins system config under “Global Config user.name Value” (if any)
- GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL - The email entered if the “Custom user name/e-mail address” behaviour is enabled; falls back to the value entered in the Jenkins system config under “Global Config user.email Value” (if any)
然后我将这几个变量,在一个app的Jenkins任务中,编译完成后的邮件内容中添加了这几个变量的内容,如下所示:
在构建后的操作中,Editable Email Notification的邮件通知中,将邮件内容改为如下所示的代码。
$DEFAULT_CONTENT<br /><font color="#0B610B">单元测试</font> <li>Launcher单元测试报告 :<a href="${BUILD_URL}testReport">点击查看测试报告</a></li> <li>Launcher代码覆盖率 :<a href="${BUILD_URL}jacoco">点击查看代码覆盖率</a></li> <li>Launcher Android Lint :<a href="${BUILD_URL}androidLintResult">点击查看Android Lint</a></li><br /> <li>GIT_COMMIT :${GIT_COMMIT}</a></li> <li>GIT_BRANCH :${GIT_BRANCH}</a></li> <li>GIT_LOCAL_BRANCH :${GIT_LOCAL_BRANCH}</a></li> <li>GIT_PREVIOUS_COMMIT :${GIT_PREVIOUS_COMMIT}</a></li> <li>GIT_PREVIOUS_SUCCESSFUL_COMMIT :${GIT_PREVIOUS_SUCCESSFUL_COMMIT}</a></li> <li>GIT_URL :${GIT_URL}</a></li> <li>GIT_URL_N :${GIT_URL_N}</a></li> <li>GIT_AUTHOR_NAME :${GIT_AUTHOR_NAME}</a></li> <li>GIT_COMMITTER_NAME :${GIT_COMMITTER_NAME}</a></li> <li>GIT_AUTHOR_EMAIL :${GIT_AUTHOR_EMAIL}</a></li> <li> GIT_COMMITTER_EMAIL :${ GIT_COMMITTER_EMAIL}</a></li>
这样编译完后,收到的邮件内容如下:
如上所示,收到的邮件内容包含了Git的相关信息:
GIT_COMMIT :118fa74e6a09c8c5ae713523692add256bfa6afbGIT_BRANCH :origin/feature/UseByAnonymousDBMigrateAndApiChangeGIT_LOCAL_BRANCH :${GIT_LOCAL_BRANCH}GIT_PREVIOUS_COMMIT :118fa74e6a09c8c5ae713523692add256bfa6afbGIT_PREVIOUS_SUCCESSFUL_COMMIT :118fa74e6a09c8c5ae713523692add256bfa6afbGIT_URL :git@172.28.1.116:Android/WatchApp/Third/NetEaseCloudMusic.gitGIT_URL_N :${GIT_URL_N}GIT_AUTHOR_NAME :${GIT_AUTHOR_NAME}GIT_COMMITTER_NAME :${GIT_COMMITTER_NAME}GIT_AUTHOR_EMAIL :${GIT_AUTHOR_EMAIL}GIT_COMMITTER_EMAIL :${ GIT_COMMITTER_EMAIL}
其中,GIT_BRANCH这个环境变量的值为origin/feature/UseByAnonymousDBMigrateAndApiChange,代表Jenkins上/UseByAnonymousDBMigrateAndApiChange分支远程Gitlab上该分支映射的远程分支。因此我们可以对GIT_BRANCH这个环境变量做做文章。
将之前gradle脚本中的getGitBranch方法,做如下修改,区分编译环境是Jenkins还是本地。环境不同,运行不同的脚本获取Git Branch的名字。当处于Jenkins环境的时候,先通过GIT_BRANCH这个环境变量获取到Jenkins拉下来的分支对应的远程分支,然后通过字符串分离,获取到分支名。
/** * 获取Git 分支名 * *参考Jenkins git 创建文档: https://wiki.jenkins.io/display/JENKINS/Git+Plugin * Environment variables The git plugin sets several environment variables you can use in your scripts: GIT_COMMIT - SHA of the current GIT_BRANCH - Name of the remote repository (defaults to origin), followed by name of the branch currently being used, e.g. "origin/master" or "origin/foo" GIT_LOCAL_BRANCH - Name of the branch on Jenkins. When the "checkout to specific local branch" behavior is configured, the variable is published. If the behavior is configured as null or **, the property will contain the resulting local branch name sans the remote name. GIT_PREVIOUS_COMMIT - SHA of the previous built commit from the same branch (the current SHA on first build in branch) GIT_PREVIOUS_SUCCESSFUL_COMMIT - SHA of the previous successfully built commit from the same branch. GIT_URL - Repository remote URL GIT_URL_N - Repository remote URLs when there are more than 1 remotes, e.g. GIT_URL_1, GIT_URL_2 GIT_AUTHOR_NAME and GIT_COMMITTER_NAME - The name entered if the "Custom user name/e-mail address" behaviour is enabled; falls back to the value entered in the Jenkins system config under "Global Config user.name Value" (if any) GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL - The email entered if the "Custom user name/e-mail address" behaviour is enabled; falls back to the value entered in the Jenkins system config under "Global Config user.email Value" (if any) * * */def getGitBranch() { //判断是否处于Jenkins编译环境 boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.gitBranch = env.GIT_BRANCH String[] stringArray = ext.gitBranch.split("/") if (stringArray.length > 0) { return stringArray[stringArray.length - 1] } else { return "UnKnown Branch" } } else { return 'git symbolic-ref --short -q HEAD'.execute().text.trim() }}
完整代码如下所示:
/** * 获取Git 分支名 * *参考Jenkins git 创建文档: https://wiki.jenkins.io/display/JENKINS/Git+Plugin * Environment variables The git plugin sets several environment variables you can use in your scripts: GIT_COMMIT - SHA of the current GIT_BRANCH - Name of the remote repository (defaults to origin), followed by name of the branch currently being used, e.g. "origin/master" or "origin/foo" GIT_LOCAL_BRANCH - Name of the branch on Jenkins. When the "checkout to specific local branch" behavior is configured, the variable is published. If the behavior is configured as null or **, the property will contain the resulting local branch name sans the remote name. GIT_PREVIOUS_COMMIT - SHA of the previous built commit from the same branch (the current SHA on first build in branch) GIT_PREVIOUS_SUCCESSFUL_COMMIT - SHA of the previous successfully built commit from the same branch. GIT_URL - Repository remote URL GIT_URL_N - Repository remote URLs when there are more than 1 remotes, e.g. GIT_URL_1, GIT_URL_2 GIT_AUTHOR_NAME and GIT_COMMITTER_NAME - The name entered if the "Custom user name/e-mail address" behaviour is enabled; falls back to the value entered in the Jenkins system config under "Global Config user.name Value" (if any) GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL - The email entered if the "Custom user name/e-mail address" behaviour is enabled; falls back to the value entered in the Jenkins system config under "Global Config user.email Value" (if any) * * */def getGitBranch() { //判断是否处于Jenkins编译环境 boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.gitBranch = env.GIT_BRANCH String[] stringArray = ext.gitBranch.split("/") if (stringArray.length > 0) { return stringArray[stringArray.length - 1] } else { return "UnKnown Branch" } } else { return 'git symbolic-ref --short -q HEAD'.execute().text.trim() }}/** * 获取Git 版本号 */def getGitSHA() { return 'git rev-parse --short HEAD'.execute().text.trim()}/** * 获取Git Tag */def getGitTag() { return 'git describe --tags'.execute([], project.rootDir).text.trim()}/** * 获取Git 提交次数 */def getGitCommitCount() { return 100 + Interger.parse('git rev-list --count HEAD'.execute([], project.rootDir).text.trim())}/** * 判断是否有jenkins */boolean isInJenkins() { Map<String, String> map = System.getenv() if (map == null) { return false } String str = map.get("Path") if (str != null) { //it's windows return false } else { str = "" Iterator it = map.iterator() while (it.hasNext()) { str += it.next() } return str.contains("jenkins") }}/** * 获取jenkins任务名 */def getJenkinsName() { boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.name = env.JOB_URL String[] stringArray = ext.name.split("/") if (stringArray.length > 0) { return stringArray[stringArray.length - 1] } else { return "Local" } } else { return "Local" }}/** * 获取Jenkins Build 号 * @return */def getJenkinsBuildCode() { boolean flag = isInJenkins() if (flag) { ext.env = System.getenv() ext.buildNumber = env.BUILD_NUMBER?.toInteger() return "$buildNumber" } else { return 0 }}/** * 定义几个变量,在build.gradle里面引用 */ext { gitTag = getGitTag() gitBranch = getGitBranch() gitSHA = getGitSHA() jenkinsRevision = getJenkinsBuildCode() jenkinsName = getJenkinsName()}
现在测试下Jenkins编译是否正常,可以看到一切都正常了。
参考链接
- https://wiki.jenkins.io/display/JENKINS/Git+Plugin
- https://stackoverflow.com/questions/6245570/how-to-get-the-current-branch-name-in-git
作者:欧阳鹏 欢迎转载,与人分享是进步的源泉!
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