docker：（4）利用WebHook实现持续集成
研发小伙伴可能对下列操作步骤会深有体会
写代码–》提交代码–》打包–》发布
在项目调试测试阶段，可能经常需要重复上面的步骤，以便将最新代码部署到特定环境供测试人员或其他人员使用
CI即持续集成的提出及各种解决方案，减轻了很多最初简单但繁琐的工作
本文将通过提交代码到git，然后通过webHook触发jenkins打包并发布到相应容器中，开发人员只需提交代码，后续打包发布都自动实现
git ：我使用的码云 我的主页为： https://gitee.com/xiaochangwei
jenkins：Jenkins ver. 2.89.2
tomcat 8 jdk8 maven3.5
[root@iZnz7e74o4ag3oZ webapps]# java -version java version "1.8.0_121" Java(TM) SE Runtime Environment (build 1.8.0_121-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode) [root@iZnz7e74o4ag3oZ webapps]# mvn -version Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426; 2017-04-04T03:39:06+08:00) Maven home: /usr/local/src/maven Java version: 1.8.0_121, vendor: Oracle Corporation Java home: /usr/local/src/jdk/jre Default locale: en_US, platform encoding: UTF-8 OS name: "linux", version: "3.10.0-693.2.2.el7.x86_64", arch: "amd64", family: "unix" [root@iZnz7e74o4ag3oZ webapps]#
配置好环境后，在tomcat中运行jenkins，并设置好用户名密码确保能正常登录使用
操作步骤：
1.安装插件 Generic Webhook Trigger Plugin、Deploy to container Plugin、Git plugin 由于这里暂时未发布到docker中，通过Deploy to container Plugin发布到tomcat中的
2.上传maven项目到https://gitee.com
3.jenkins中新建项目ci
3.1 配置提交的代码地址，Add有权限的用户名和密码（我的是私有项目），指定分支
3.2：配置maven命令以及发布到的tomcat
注意：发布项目的tomcat需要设置用户信息，即修改conf下的user.xml 具体可以参考我很早之前写的 http://www.cnblogs.com/xiaochangwei/p/4952644.html
这样就可以手动构建项目了，请确保手动构建能成功后再进行下列操作
遇见的问题及解决方案：
如果构建时提示权限不对
生成公钥： ssh-keygen -t rsa 一直回车直结束
cat ~/.ssh/id_rsa.pub 将内容增加到码云上
如果还提示没权限
手动先在jenkins运行的机器上clone一次代码 如 git clone git@gitee.com:xiaochangwei/ci-demo.git 注意输入yes
然后再看.ssh目录，多了一个known_hosts 里面有码云了，然后再手动构建，应该就能成功了
至此，手动打包并部署就已经实现了
——————————自动部署 ————————————————–
1. 安装上述插件后勾选Generic Webhook Trigger 增加post参数 ref expression值为 $.ref 注意有个点
增加optional filter
其实上面这部分不用设置也行，尤其是只会在jenkins中部署一个项目的一个分支时，只需要勾选上Generic Webhook Trigger就可以的
2. 在码云中增加hook：http://jenkins登录账号:jenkins登录密码@jenkins部署的地址:端口号/jenkins/generic-webhook-trigger/invoke （红色这部分不要变）
同时勾选push或者其他你认为需要触发部署的事件
提交后点击测试，如果返回ok，则表示成功，切换到jenkins，查看项目是否能够自动部署
我自己写了一个接口用来获取点击测试后，到底请求了些什么
格式化下内容如下：
{ "hook_name": "push_hooks", "total_commits_count": 1, "before": "0000000000000000000000000000000000000000", "user_name": "肖哥哥", "project": { "path": "ci-demo", "git_svn_url": "svn://gitee.com/xiaochangwei/ci-demo", "path_with_namespace": "xiaochangwei/ci-demo", "name": "ci-demo", "namespace": "xiaochangwei", "default_branch": "master", "git_http_url": "https://gitee.com/xiaochangwei/ci-demo.git", "name_with_namespace": "肖哥哥/ci-demo", "url": "https://gitee.com/xiaochangwei/ci-demo", "git_ssh_url": "git@gitee.com:xiaochangwei/ci-demo.git" }, "repository": { "name": "ci-demo", "description": "", "url": "https://gitee.com/xiaochangwei/ci-demo.git", "homepage": "https://gitee.com/xiaochangwei/ci-demo" }, "commits_more_than_ten": false, "ref": "refs/heads/master", "password": "", "commits": [{ "author": { "name": "肖哥哥", "time": "2015-11-06T13:21:07+08:00", "email": "317409898@qq.com" }, "id": "ec7159240a346fa5988913aa3057b902a4acb126", "message": "A Test For WebHooks", "url": "https://gitee.com/xiaochangwei/ci-demo/commit/ec7159240a346fa5988913aa3057b902a4acb126", "timestamp": "2015-11-06T13:21:07+08:00" }], "after": "ec7159240a346fa5988913aa3057b902a4acb126", "user": { "name": "肖哥哥", "id": 372286, "time": "2018-01-11T12:38:38+08:00", "user": "xiaochangwei", "email": "317409898@qq.com", "url": "https://gitee.com/xiaochangwei" } }
其实多建立几个项目然后获取信息后会发现，不同项目间存在差异的就是project.git_ssh_url 和分支 ref
至此，单个项目的自动部署就完了
如果你在jenkins中有多个项目，你触发其中的一个webHook你就会发现，所有的项目都在构建？
这就有点不科学了，本来只想构建A项目，结果Abc项目都构建了？ 要解决这个就需要用到上面提到的post param 和 filer 了
解析触发自动构建的请求参数，ref和project.git_ssh_url是差异性的东西，那就根据两个来区分项目
有这上面的两个post参数还不行，因为只是获取到了对应的参数值
其实要想区分不同的项目也简单，只要获取到的ref还有url 和需要构建的项目分支和 git地址相同就构建，否则就不构建
optional filter提供的方式就是最简单的正则匹配
Expression设置为 ^(refs/heads/master)_(git@gitee.com:xiaochangwei/ci-demo.git)$ 注意修改为自己的项目地址
Text 设置为 $ref_$project.git_ssh_url
保存，再次构建，是不是只触发了一个项目了，而不是所有项目了
测试：
1.提交代码， 提交代码后看到jenkins就自动编译打包了
2.查看编译日志：jenkins收到了webhook请求，并且拉取了代码，提交信息和我们提交代码时输入信息一致
有同学质疑我这里为啥失败了，是不是自动构建不可用，不是哈， 我这里是用的阿里服务器，内存不够导致了自动发布失败
完整编译日志如下：
Generic Cause Building in workspace /root/.jenkins/workspace/ci GenericWebhookEnvironmentContributor Received: {"before":"49e44600daf4dfc84a65486682adb26cbc1ebbc5","after":"2eca30803759e021f658c92c136aa72dc026c3be","ref":"refs/heads/master","user_id":372286,"user_name":"\u8096\u54e5\u54e5","user":{"name":"\u8096\u54e5\u54e5","username":"xiaochangwei","url":"https://gitee.com/xiaochangwei"},"repository":{"name":"ci-demo","url":"https://gitee.com/xiaochangwei/ci-demo","description":"","homepage":"https://gitee.com/xiaochangwei/ci-demo"},"commits":[{"id":"2eca30803759e021f658c92c136aa72dc026c3be","message":"test auto package and deploy","timestamp":"2018-01-11T15:02:08+08:00","url":"https://gitee.com/xiaochangwei/ci-demo/commit/2eca30803759e021f658c92c136aa72dc026c3be","author":{"name":"xiaochangwei","email":"changw.xiao@qq.com","time":"2018-01-11T15:02:08+08:00"}}],"total_commits_count":1,"commits_more_than_ten":false,"project":{"name":"ci-demo","path":"ci-demo","url":"https://gitee.com/xiaochangwei/ci-demo","git_ssh_url":"git@gitee.com:xiaochangwei/ci-demo.git","git_http_url":"https://gitee.com/xiaochangwei/ci-demo.git","git_svn_url":"svn://gitee.com/xiaochangwei/ci-demo","namespace":"xiaochangwei","name_with_namespace":"\u8096\u54e5\u54e5/ci-demo","path_with_namespace":"xiaochangwei/ci-demo","default_branch":"master"},"enterprise":null,"hook_name":"push_hooks","password":""} Contributing variables: ref = refs/heads/master project.git_ssh_url = git@gitee.com:xiaochangwei/ci-demo.git > git rev-parse --is-inside-work-tree # timeout=10 Fetching changes from the remote Git repository > git config remote.origin.url git@gitee.com:xiaochangwei/ci-demo.git # timeout=10 Fetching upstream changes from git@gitee.com:xiaochangwei/ci-demo.git > git --version # timeout=10 using GIT_ASKPASS to set credentials > git fetch --tags --progress git@gitee.com:xiaochangwei/ci-demo.git +refs/heads/*:refs/remotes/origin/* > git rev-parse refs/remotes/origin/master^{commit} # timeout=10 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10 Checking out Revision 2eca30803759e021f658c92c136aa72dc026c3be (refs/remotes/origin/master) > git config core.sparsecheckout # timeout=10 > git checkout -f 2eca30803759e021f658c92c136aa72dc026c3be Commit message: "test auto package and deploy" > git rev-list --no-walk 49e44600daf4dfc84a65486682adb26cbc1ebbc5 # timeout=10 Parsing POMs Established TCP socket on 44312 [ci] $ /usr/local/src/jdk/bin/java -cp /root/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven35-agent-1.12-alpha-1.jar:/usr/local/src/maven/boot/plexus-classworlds-2.5.2.jar:/usr/local/src/maven/conf/logging jenkins.maven3.agent.Maven35Main /usr/local/src/maven /usr/local/src/tomcat/webapps/jenkins/WEB-INF/lib/remoting-3.14.jar /root/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven35-interceptor-1.12-alpha-1.jar /root/.jenkins/plugins/maven-plugin/WEB-INF/lib/maven3-interceptor-commons-1.12-alpha-1.jar 44312 <===[JENKINS REMOTING CAPACITY]===>channel started Executing Maven: -B -f /root/.jenkins/workspace/ci/pom.xml clean package -Dmaven.test.skip=true [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building docker-demo 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ ci-demo --- [INFO] Deleting /root/.jenkins/workspace/ci/target [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ ci-demo --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 1 resource [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ ci-demo --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 6 source files to /root/.jenkins/workspace/ci/target/classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ ci-demo --- [INFO] Not copying test resources [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ ci-demo --- [INFO] Not compiling test sources [INFO] [INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ ci-demo --- [INFO] Tests are skipped. [INFO] [INFO] --- maven-war-plugin:2.6:war (default-war) @ ci-demo --- [INFO] Packaging webapp [INFO] Assembling webapp [ci-demo] in [/root/.jenkins/workspace/ci/target/ci-demo] [INFO] Processing war project [INFO] Webapp assembled in [439 msecs] [INFO] Building war: /root/.jenkins/workspace/ci/target/ci-demo.war [INFO] [INFO] --- spring-boot-maven-plugin:1.5.9.RELEASE:repackage (default) @ ci-demo --- ERROR: Maven JVM terminated unexpectedly with exit code 137 Finished: FAILURE
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