Examples of org.apache.twill.api.TwillRunnerService

org.apache.twill.api.TwillRunnerService
A {@link TwillRunner} that extends {@link Service} to provide lifecycle management functions.The {@link #start()} method needs to be called before calling any other method of this interface.When done with this service, call {@link #stop()} to release any resources that it holds.

    // Make sure still only one app is running
    Iterable<TwillRunner.LiveInfo> apps = runner.lookupLive();
    Assert.assertTrue(YarnTestUtils.waitForSize(apps, 1, 60));


    // Creates a new runner service to check it can regain control over running app.
    TwillRunnerService runnerService = YarnTestUtils.createTwillRunnerService();
    runnerService.startAndWait();


    try {
      Iterable <TwillController> controllers = runnerService.lookup("EchoServer");
      Assert.assertTrue(YarnTestUtils.waitForSize(controllers, 1, 60));


      for (TwillController c : controllers) {
        LOG.info("Stopping application: " + c.getRunId());
        c.stop().get(30, TimeUnit.SECONDS);
      }


      Assert.assertTrue(YarnTestUtils.waitForSize(apps, 0, 60));
    } finally {
      runnerService.stopAndWait();
    }


    // Sleep a bit before exiting.
    TimeUnit.SECONDS.sleep(2);
  }

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    // Make sure still only one app is running
    Iterable<TwillRunner.LiveInfo> apps = runner.lookupLive();
    Assert.assertTrue(YarnTestUtils.waitForSize(apps, 1, 60));


    // Creates a new runner service to check it can regain control over running app.
    TwillRunnerService runnerService = YarnTestUtils.createTwillRunnerService(tmpFolder.newFolder());
    runnerService.startAndWait();


    try {
      Iterable <TwillController> controllers = runnerService.lookup("EchoServer");
      Assert.assertTrue(YarnTestUtils.waitForSize(controllers, 1, 60));


      for (TwillController c : controllers) {
        LOG.info("Stopping application: " + c.getRunId());
        c.stop().get(30, TimeUnit.SECONDS);
      }


      Assert.assertTrue(YarnTestUtils.waitForSize(apps, 0, 60));
    } finally {
      runnerService.stopAndWait();
    }


    // Sleep a bit before exiting.
    TimeUnit.SECONDS.sleep(2);
  }

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      System.err.println("Arguments format: <host:port of zookeeper server>");
    }


    String zkStr = args[0];


    final TwillRunnerService twillRunner =
      new YarnTwillRunnerService(
        new YarnConfiguration(), zkStr);
    twillRunner.startAndWait();


    final TwillController controller =
      twillRunner.prepare(new HelloWorldRunnable())
        .addLogHandler(new PrinterLogHandler(new PrintWriter(System.out, true)))
        .start();


    Runtime.getRuntime().addShutdownHook(new Thread() {
      @Override
      public void run() {
        controller.stopAndWait();
        twillRunner.stopAndWait();
      }
    });


    try {
      Services.getCompletionFuture(controller).get();

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Related Classes of org.apache.twill.api.TwillRunnerService

org.apache.twill.example.yarn.HelloWorld

org.apache.twill.yarn.EchoServerTestRun

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