/** @throws Exception If failed. */
  public void testDisabledRest() throws Exception {
    restEnabled = false;

    final Grid g = startGrid("disabled-rest");

    try {
      Thread.sleep(2 * TOP_REFRESH_FREQ);

      // As long as we have round robin load balancer this will cause every node to be queried.
      for (int i = 0; i < NODES_CNT + 1; i++)
        assertEquals(NODES_CNT + 1, client.compute().refreshTopology(false, false).size());

      final GridClientData data = client.data(PARTITIONED_CACHE_NAME);

      // Check rest-disabled node is unavailable.
      try {
        String affKey;

        do {
          affKey = UUID.randomUUID().toString();
        } while (!data.affinity(affKey).equals(g.localNode().id()));

        data.put(affKey, "asdf");

        assertEquals("asdf", cache(0, PARTITIONED_CACHE_NAME).get(affKey));
      } catch (GridServerUnreachableException e) {
        // Thrown for direct client-node connections.
        assertTrue(
            "Unexpected exception message: " + e.getMessage(),
            e.getMessage()
                .startsWith("No available endpoints to connect (is rest enabled for this node?)"));
      } catch (GridClientException e) {
        // Thrown for routed client-router-node connections.
        String msg = e.getMessage();

        assertTrue(
            "Unexpected exception message: " + msg,
            protocol() == GridClientProtocol.TCP
                ? msg.contains("No available endpoints to connect (is rest enabled for this node?)")
                : // TCP router.
                msg.startsWith(
                    "No available nodes on the router for destination node ID")); // HTTP router.
      }

      // Check rest-enabled nodes are available.
      String affKey;

      do {
        affKey = UUID.randomUUID().toString();
      } while (data.affinity(affKey).equals(g.localNode().id()));

      data.put(affKey, "fdsa");

      assertEquals("fdsa", cache(0, PARTITIONED_CACHE_NAME).get(affKey));
    } finally {
      restEnabled = true;

      G.stop(g.name(), true);
    }
  }
  /**
   * Starts Grid instance. Note that if grid is already started, then it will be looked up and
   * returned from this method.
   *
   * @return Started grid.
   */
  private Grid startGrid() {
    Properties props = System.getProperties();

    gridName = props.getProperty(GRIDGAIN_NAME.name());

    if (!props.containsKey(GRIDGAIN_NAME.name()) || G.state(gridName) != GridFactoryState.STARTED) {
      selfStarted = true;

      // Set class loader for the spring.
      ClassLoader curCl = Thread.currentThread().getContextClassLoader();

      // Add no-op logger to remove no-appender warning.
      Appender app = new NullAppender();

      Logger.getRootLogger().addAppender(app);

      try {
        Thread.currentThread().setContextClassLoader(getClass().getClassLoader());

        Grid grid = G.start(cfgPath);

        gridName = grid.name();

        System.setProperty(GRIDGAIN_NAME.name(), grid.name());

        return grid;
      } catch (GridException e) {
        throw new GridRuntimeException("Failed to start grid: " + cfgPath, e);
      } finally {
        Logger.getRootLogger().removeAppender(app);

        Thread.currentThread().setContextClassLoader(curCl);
      }
    }

    return G.grid(gridName);
  }
  /**
   * Starts up grid and checks all provided values for prime.
   *
   * @param args Command line arguments, none required but if provided first one should point to the
   *     Spring XML configuration file. See {@code "examples/config/"} for configuration file
   *     examples.
   * @throws GridException If example execution failed.
   */
  public static void main(String[] args) throws GridException {
    // Starts grid.
    Grid grid = args.length == 0 ? G.start() : G.start(args[0]);

    // Values we want to check for prime.
    long[] checkVals = {32452841, 32452843, 32452847, 32452849, 236887699, 217645199};

    X.println(">>>");
    X.println(
        ">>> Starting to check the following numbers for primes: " + Arrays.toString(checkVals));

    try {
      long start = System.currentTimeMillis();

      for (long checkVal : checkVals) {
        // This method will be executed on the Grid as it is
        // annotated with @Gridify annotation.
        Long divisor = GridPrimeChecker.checkPrime(checkVal, 2, checkVal);

        // If divisor is null, then the number is prime.
        if (divisor == null) {
          X.println("Value '" + checkVal + "'is a prime number.");
        } else {
          X.println("Value '" + checkVal + "' is divisible by '" + divisor + '\'');
        }
      }

      long totalTime = System.currentTimeMillis() - start;

      X.println(">>> Total time to calculate all primes (milliseconds): " + totalTime);
      X.println(">>>");
    } finally {
      // Stops grid.
      G.stop(grid.name(), true);
    }
  }
  /**
   * See <a href="http://e-docs.bea.com/wls/docs100/javadocs/weblogic/common/T3StartupDef.html">
   * http://e-docs.bea.com/wls/docs100/javadocs/weblogic/common/T3StartupDef.html</a> for more
   * information.
   *
   * @param str Virtual name by which the class is registered as a {@code startupClass} in the
   *     {@code config.xml} file
   * @param params A hashtable that is made up of the name-value pairs supplied from the {@code
   *     startupArgs} property
   * @return Result string (log message).
   * @throws Exception Thrown if error occurred.
   */
  @SuppressWarnings({"unchecked", "CatchGenericClass"})
  @Override
  public String startup(String str, Hashtable params) throws Exception {
    GridLogger log = new GridJavaLogger(LoggingHelper.getServerLogger());

    cfgFile = (String) params.get(cfgFilePathParam);

    if (cfgFile == null) {
      throw new IllegalArgumentException("Failed to read property: " + cfgFilePathParam);
    }

    String workMgrName = (String) params.get(workMgrParam);

    URL cfgUrl = U.resolveGridGainUrl(cfgFile);

    if (cfgUrl == null)
      throw new ServerLifecycleException(
          "Failed to find Spring configuration file (path provided should be "
              + "either absolute, relative to GRIDGAIN_HOME, or relative to META-INF folder): "
              + cfgFile);

    GenericApplicationContext springCtx;

    try {
      springCtx = new GenericApplicationContext();

      XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(springCtx);

      xmlReader.loadBeanDefinitions(new UrlResource(cfgUrl));

      springCtx.refresh();
    } catch (BeansException e) {
      throw new ServerLifecycleException(
          "Failed to instantiate Spring XML application context: " + e.getMessage(), e);
    }

    Map cfgMap;

    try {
      // Note: Spring is not generics-friendly.
      cfgMap = springCtx.getBeansOfType(GridConfiguration.class);
    } catch (BeansException e) {
      throw new ServerLifecycleException(
          "Failed to instantiate bean [type="
              + GridConfiguration.class
              + ", err="
              + e.getMessage()
              + ']',
          e);
    }

    if (cfgMap == null)
      throw new ServerLifecycleException(
          "Failed to find a single grid factory configuration in: " + cfgUrl);

    if (cfgMap.isEmpty())
      throw new ServerLifecycleException("Can't find grid factory configuration in: " + cfgUrl);

    try {
      ExecutorService execSvc = null;

      MBeanServer mbeanSrv = null;

      for (GridConfiguration cfg : (Collection<GridConfiguration>) cfgMap.values()) {
        assert cfg != null;

        GridConfigurationAdapter adapter = new GridConfigurationAdapter(cfg);

        // Set logger.
        if (cfg.getGridLogger() == null) adapter.setGridLogger(log);

        if (cfg.getExecutorService() == null) {
          if (execSvc == null)
            execSvc =
                workMgrName != null
                    ? new GridThreadWorkManagerExecutor(workMgrName)
                    : new GridThreadWorkManagerExecutor(J2EEWorkManager.getDefault());

          adapter.setExecutorService(execSvc);
        }

        if (cfg.getMBeanServer() == null) {
          if (mbeanSrv == null) {
            InitialContext ctx = null;

            try {
              ctx = new InitialContext();

              mbeanSrv = (MBeanServer) ctx.lookup("java:comp/jmx/runtime");
            } catch (Exception e) {
              throw new IllegalArgumentException(
                  "MBean server was not provided and failed to obtain " + "Weblogic MBean server.",
                  e);
            } finally {
              if (ctx != null) ctx.close();
            }
          }

          adapter.setMBeanServer(mbeanSrv);
        }

        Grid grid = G.start(adapter, springCtx);

        // Test if grid is not null - started properly.
        if (grid != null) gridNames.add(grid.name());
      }

      return getClass().getSimpleName() + " started successfully.";
    } catch (GridException e) {
      // Stop started grids only.
      for (String name : gridNames) G.stop(name, true);

      throw new ServerLifecycleException("Failed to start GridGain.", e);
    }
  }