Question

我想在我的视图中显示'git describe'的输出。我是否需要编写一个更新值并将其设置为应用程序范围的插件？或者有更简单的方法吗？

Answer 1

我刚读过有关游戏模块的内容，并决定写一个（https://github.com/killdashnine/play-git-plugin）以确定我是否可以解决我的问题：

import java.io.BufferedReader;
import java.io.InputStreamReader;

import play.Logger;
import play.Play;
import play.PlayPlugin;

public class GitPlugin extends PlayPlugin {

        private static String GIT_PLUGIN_PREFIX = "GIT plugin: ";

        @Override
        public void onApplicationStart()  {
                Logger.info(GIT_PLUGIN_PREFIX + "executing 'git describe'");
                final StringBuffer gitVersion = new StringBuffer();
                try {
                        final Process p = Runtime.getRuntime().exec("git describe"); 
                        final BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream())); 

                        // wait for process to complete
                        p.waitFor(); 

                        // read the output
                        String line = reader.readLine(); 
                        while(line != null) { 
                                gitVersion.append(line); 
                                line = reader.readLine(); 
                        } 
                }
                catch(Exception e) {
                        Logger.error(GIT_PLUGIN_PREFIX + "unable to execute 'git describe'");
                }

                // set a property for this value
                Play.configuration.setProperty("git.revision", gitVersion.toString());

                Logger.info(GIT_PLUGIN_PREFIX + "revision is " + gitVersion.toString());
        }
}

结果是：

12:14:46,508 INFO  ~ GIT plugin: executing 'git describe'
12:14:46,513 INFO  ~ GIT plugin: revision is V0-beta-7-gac9af80

在我的控制器中：

    @Before
    static void addDefaults() {
        renderArgs.put("version", Play.configuration.getProperty("git.revision"));
     }

当然这不是很便携，可以改进。可能的改进是允许通过配置文件中的设置运行自定义命令。

Answer 2

如果你没有从git repo运行代码，你可以像我一样，我有一个生成war文件的构建脚本，在这个脚本中我会这样做：

cat > {apppath}/conf/application_version.properties << EOF
application.version=`git describe`
application.buildtime=`date`
EOF
...

在@OnApplicationStart类中添加属性

private def readApplicationVersion() {
    Logger.info("Bootstrap.readApplicationVersion file")
    Play.id match {
        case "" | "test" => Play.configuration.put("application.version", "TEST-MODE");  Play.configuration.put("application.buildtime", "YEAH BABY YEAH REALTIME")
        case _ => addFileProp(VirtualFile.open(Play.applicationPath).child("conf/application_version.properties").inputstream())
    }
}

private def addFileProp(input: InputStream) {
    input match {
        case null => Logger.error("can't find config file, Play id: " + Play.id + ". Will exit now.")
        case _ => val extendCconfiguration = IO.readUtf8Properties(input);
        for (key <- extendCconfiguration.keys) {
            Play.configuration.put(key, extendCconfiguration.get(key))
        }
    }
}

来自Controller

object ApplicationVersion extends Controller {
    def version = {
        Json("{iamVersion: '"+configuration.getProperty("application.version")+"', buildTime: '"+configuration.getProperty("application.buildtime")+"'}")
    }
}

使用play框架将'git describe'的输出放在模板中？

2 个答案: