Configuration depending on launch mode

Question

Play can be launched in dev mode (via run), in production mode (via start) or in test mode. Is there a way to provide a different config file (co

Answer 1

This thing can be done by having loading config files based on the environment which can be supplied via -Dmode=staging/dev/prod, and for loading the files I override onLoadConfig of GlobalSettings in Global.java.

Java snippet-

 @Override
 public Configuration onLoadConfig(Configuration config, File file,ClassLoader classLoader) {
 Configuration updatedConfig = config;
 String mode = config.getString("mode");
 if (StringUtils.isNotEmpty(mode)) {
   try {
     File modeFolder = FileUtils.getFile(file, "conf/" + mode);
     if (modeFolder.exists()) {
       play.api.Configuration modeConfig = config.getWrappedConfiguration();
       IOFileFilter fileFilter = new WildcardFileFilter("*.conf");
       Collection fileList = FileUtils.listFiles(modeFolder, fileFilter, null);
       for (File confFile : fileList) {
         modeConfig = modeConfig
            .$plus$plus(new play.api.Configuration(ConfigFactory.parseFile(confFile)));

      }
       updatedConfig = new Configuration(modeConfig);
     }
   } catch (Exception e) {
     Logger.error("Exception while loading configuration for mode : " + mode, e);
   }
 } else {
   Logger.error("Please provide mode in which play application has to start (Ex. play -Dmode=) ");
 }

For each mode, create a folder(name same as environment) and keep environment specific config in that folder.