Injecting Current Git Commit ID Into Java

Following is a quick hack to inject the last commits id into the application, this ant task will create a file called "commit-id" in your build directory which will contain the last commits id,

   <target name="commit-id" depends="">
     <exec executable = "git" output="${build.dir}/commit-id">
       <arg value = "rev-parse" />
       <arg value = "HEAD" />
     </exec>
   </target>

Now from any where in your application we can read the commit id and log it or display it,

   try{
       InputStream s = some.class.getResourceAsStream("/commit-id");
       BufferedReader in = new BufferedReader(new InputStreamReader(s));
       logger.info("Build from commit " + in.readLine());
   }catch( Exception e ) { 
       logger.warning(e.toString());
   }

Another alternative is to have a properties file that your application reads and use the "replace" task to replace a variable with the commits id.

nakkayadotcom

Injecting Current Git Commit ID Into Java

Random Posts