@Override
  public String getStatus() {
    StringWriter sw = new StringWriter();
    PrintWriter out = new PrintWriter(sw);
    if (executor == null) {
      out.println("Jobs execution pool:");
      out.println("~~~~~~~~~~~~~~~~~~~");
      out.println("(not yet started)");
      return sw.toString();
    }
    out.println("Jobs execution pool:");
    out.println("~~~~~~~~~~~~~~~~~~~");
    out.println("Pool size: " + executor.getPoolSize());
    out.println("Active count: " + executor.getActiveCount());
    out.println("Scheduled task count: " + executor.getTaskCount());
    out.println("Queue size: " + executor.getQueue().size());
    SimpleDateFormat df = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
    if (!scheduledJobs.isEmpty()) {
      out.println();
      out.println("Scheduled jobs (" + scheduledJobs.size() + "):");
      out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~");
      for (Job job : scheduledJobs) {
        out.print(job.getClass().getName());
        if (job.getClass().isAnnotationPresent(OnApplicationStart.class)
            && !(job.getClass().isAnnotationPresent(On.class)
                || job.getClass().isAnnotationPresent(Every.class))) {
          OnApplicationStart appStartAnnotation =
              job.getClass().getAnnotation(OnApplicationStart.class);
          out.print(
              " run at application start" + (appStartAnnotation.async() ? " (async)" : "") + ".");
        }

        if (job.getClass().isAnnotationPresent(On.class)) {

          String cron = job.getClass().getAnnotation(On.class).value();
          if (cron != null && cron.startsWith("cron.")) {
            cron = Play.configuration.getProperty(cron);
          }
          out.print(" run with cron expression " + cron + ".");
        }
        if (job.getClass().isAnnotationPresent(Every.class)) {
          out.print(" run every " + job.getClass().getAnnotation(Every.class).value() + ".");
        }
        if (job.lastRun > 0) {
          out.print(" (last run at " + df.format(new Date(job.lastRun)));
          if (job.wasError) {
            out.print(" with error)");
          } else {
            out.print(")");
          }
        } else {
          out.print(" (has never run)");
        }
        out.println();
      }
    }
    if (!executor.getQueue().isEmpty()) {
      out.println();
      out.println("Waiting jobs:");
      out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~");
      ScheduledFuture[] q = executor.getQueue().toArray(new ScheduledFuture[0]);

      for (int i = 0; i < q.length; i++) {
        ScheduledFuture task = q[i];
        out.println(
            Java.extractUnderlyingCallable((FutureTask<?>) task)
                + " will run in "
                + task.getDelay(TimeUnit.SECONDS)
                + " seconds");
      }
    }
    return sw.toString();
  }
  @Override
  public void afterApplicationStart() {
    List<Class<?>> jobs = new ArrayList<Class<?>>();
    for (Class clazz : Play.classloader.getAllClasses()) {
      if (Job.class.isAssignableFrom(clazz)) {
        jobs.add(clazz);
      }
    }
    scheduledJobs = new ArrayList<Job>();
    for (final Class<?> clazz : jobs) {
      // @OnApplicationStart
      if (clazz.isAnnotationPresent(OnApplicationStart.class)) {
        // check if we're going to run the job sync or async
        OnApplicationStart appStartAnnotation = clazz.getAnnotation(OnApplicationStart.class);
        if (!appStartAnnotation.async()) {
          // run job sync
          try {
            Job<?> job = ((Job<?>) clazz.newInstance());
            scheduledJobs.add(job);
            job.run();
            if (job.wasError) {
              if (job.lastException != null) {
                throw job.lastException;
              }
              throw new RuntimeException("@OnApplicationStart Job has failed");
            }
          } catch (InstantiationException e) {
            throw new UnexpectedException("Job could not be instantiated", e);
          } catch (IllegalAccessException e) {
            throw new UnexpectedException("Job could not be instantiated", e);
          } catch (Throwable ex) {
            if (ex instanceof PlayException) {
              throw (PlayException) ex;
            }
            throw new UnexpectedException(ex);
          }
        } else {
          // run job async
          try {
            Job<?> job = ((Job<?>) clazz.newInstance());
            scheduledJobs.add(job);
            // start running job now in the background
            @SuppressWarnings("unchecked")
            Callable<Job> callable = (Callable<Job>) job;
            executor.submit(callable);
          } catch (InstantiationException ex) {
            throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
          } catch (IllegalAccessException ex) {
            throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
          }
        }
      }

      // @On
      if (clazz.isAnnotationPresent(On.class)) {
        try {
          Job<?> job = ((Job<?>) clazz.newInstance());
          scheduledJobs.add(job);
          scheduleForCRON(job);
        } catch (InstantiationException ex) {
          throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
        } catch (IllegalAccessException ex) {
          throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
        }
      }
      // @Every
      if (clazz.isAnnotationPresent(Every.class)) {
        try {
          Job job = (Job) clazz.newInstance();
          scheduledJobs.add(job);
          String value = job.getClass().getAnnotation(Every.class).value();
          if (value.startsWith("cron.")) {
            value = Play.configuration.getProperty(value);
          }
          value = Expression.evaluate(value, value).toString();
          if (!"never".equalsIgnoreCase(value)) {
            executor.scheduleWithFixedDelay(
                job, Time.parseDuration(value), Time.parseDuration(value), TimeUnit.SECONDS);
          }
        } catch (InstantiationException ex) {
          throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
        } catch (IllegalAccessException ex) {
          throw new UnexpectedException("Cannot instanciate Job " + clazz.getName());
        }
      }
    }
  }