jgit-flow maven plugin to Release Java Application

Introduction

As a DevOps I need a smooth way to release the java application, so I compared two maven plugin that are used to release the java application and in the end I found that Jgit-flow plugin is far better than maven-release plugin on the basis of following points:
  • Maven-release plugin creates .backup and release.properties files to your working directory which can be committed mistakenly, when they should not be. jgit-flow maven plugin doesn’t create these files or any other file in your working directory.
  • Maven-release plugin create two tags.
  • Maven-release plugin does a build in the prepare goal and a build in the perform goal causing tests to run 2 times but jgit-flow maven plugin builds project once so tests run only once.
  • If something goes wrong during the maven plugin execution, It become very tough to roll it back, on the other hand jgit-flow maven plugin makes all changes into the branch and if you want to roll back just delete that branch.
  • jgit-flow maven plugin doesn’t run site-deploy
  • jgit-flow maven plugin provides option to turn on/off maven deployment
  • jgit-flow maven plugin provides option to turn on/off remote pushes/tagging
  • jgit-flow maven plugin keeps the master branch always at latest release version.
Now let’s see how to integrate Jgit-flow maven plugin and use it

How to use Jgit-flow maven Plugin for Release

Follow the flowing steps
    1. Add the following lines in your pom.xml for source code management access 
      
   scm:git:
  scm:git:git:
    2. Add these line to resolve the Jgit-flow maven plugin and put the other option that will be required during the build 
      com.atlassian.maven.plugins
maven-jgitflow-plugin
1.0-m4.3
        
true
false
true
true
true
true
true
true
          
master-test
deploy-test

Above code snippet will perform following steps:

    • Maven will resolve the jgitflow plug-in dependency
    • In the configuration section, we describe how jgit-flow plug-in will behave.
    • pushRelease XML tag to enable and disable jgit-flow from releasing the intermediate branches into the git or not.
    • keepBranch XML tag to enable and disable the plug-in for keep the intermediate branch or not.
    • noTag XMl tag to enable and disable the plug-in to create the that tag in git.
    • allowUntracked XML tag to whether allow untracked file during the checking.
    • flowInitContext XML tag is used to override the default and branch name of the jgit-flow plug-in
    • In above code snippet, there is only two branches, master from where that code will be pulled and a intermediate branch that will be used by the jgit-flow plug-in. as I have discussed that jgit-flow plug-in uses the branches to keep it records. so development branch will be created by the plug-in that resides in the local not remotely, to track the release version etc.
  2. To put your releases into the repository manager add these lines 
    <distributionManagement>
  <repository>
    <id><auth id></id>
    <url><repo url of repository managers></url>
  </repository>
  <snapshotRepository>
    <id><auth id></id>
    <url><repo url of repository managers></url>
  </snapshotRepository>
</distributionManagement>
  3. Put the following lines into your m2/settings.xml with your repository manager credentials 
    <settings>
  <servers>
    <server>
        <id><PUT THE ID OF THE REPOSITORY OR SNAPSHOTS ID HERE></id>
       <username><USERNAME></username>
       <password><PASSWORD></password>
    </server>
  </servers>
</settings>

Start Release jgit-flow maven plugin command

To start the new release execute jgitflow:release-start.

Finish Release jgit-flow maven plugin  command

To finish new release, execute mvn jgitflow:release-finish.
For a example I have created a repository in github.com. for testing and two branch master-test and deploy-test. It is assumed that you have configured maven and git your system.

In the deploy-test branch run following command
$ mvn clean -Dmaven.test.skip=true install jgitflow:release-start

This command will take input from you for release version and create a release branch with release/. then it will push this release branch into github repository for temporarily because we are not saving the intermediate branched

Now At the end run this command
$ mvn -Dmaven.test.skip=true jgitflow:release-finish
after finishing this command it will delete release/ from local and remote.

Now you can check the changes in pom file by jgitflow. in the above snapshot, it is master-test branch, you can see in the tag it has removed the snapshot and also increased the version.  It hold the current version of the application.

And in the deploy-test branch it show you new branch on which developers are working on

6 thoughts on “jgit-flow maven plugin to Release Java Application”

  2. Inside previously mentioned program code snippet, there is certainly simply a couple of divisions, learn coming from in which in which program code will probably be taken plus a more Devops As a Service advanced part which will be employed by the particular jgit-flow plug-in. as i have got reviewed in which jgit-flow plug-in makes use of the particular divisions to help keep that data.

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  5. I have follow all the step but getting below exception….Can you please suggest.[ERROR] Caught exception in FS.readPipe()java.io.IOException: Cannot run program \”bash\” (in directory \”P:\\\”): CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at java.lang.Runtime.exec(Runtime.java:620) at org.eclipse.jgit.util.FS.readPipe(FS.java:431) at org.eclipse.jgit.util.FS_Win32.discoverGitPrefix(FS_Win32.java:113) at org.eclipse.jgit.util.FS.gitPrefix(FS.java:517) at org.eclipse.jgit.util.SystemReader$Default.openSystemConfig(SystemReader.java:92) at org.eclipse.jgit.internal.storage.file.FileRepository.(FileRepository.java:171) at org.eclipse.jgit.lib.BaseRepositoryBuilder.build(BaseRepositoryBuilder.java:577) at org.eclipse.jgit.api.Git.open(Git.java:113) at org.eclipse.jgit.api.Git.open(Git.java:97) at com.atlassian.jgitflow.core.JGitFlowInitCommand.getOrInitGit(JGitFlowInitCommand.java:456) at com.atlassian.jgitflow.core.JGitFlowInitCommand.call(JGitFlowInitCommand.java:112) at com.atlassian.maven.plugins.jgitflow.provider.DefaultJGitFlowProvider.gitFlow(DefaultJGitFlowProvider.java:32) at com.atlassian.maven.plugins.jgitflow.manager.AbstractFlowReleaseManager.runPreflight(AbstractFlowReleaseManager.java:67) at com.atlassian.maven.plugins.jgitflow.manager.DefaultFlowFeatureManager.getStartLabelAndRunPreflight(DefaultFlowFeatureManager.java:233) at com.atlassian.maven.plugins.jgitflow.manager.DefaultFlowFeatureManager.start(DefaultFlowFeatureManager.java:62) at com.atlassian.maven.plugins.jgitflow.mojo.FeatureStartMojo.execute(FeatureStartMojo.java:74) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) at org.codehaus.classworlds.Launcher.main(Launcher.java:47)Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessImpl.create(Native Method) at java.lang.ProcessImpl.(ProcessImpl.java:386) at java.lang.ProcessImpl.start(ProcessImpl.java:137) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) … 39 more

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