Examples of com.sun.sgs.service.DataService

com.sun.sgs.service.DataService
Provides facilities for services to manage access to shared, persistent objects. In addition to the methods provided by {@link DataManager}, this interface includes methods for an additional set of service bindings. These service bindings are intended to by used by services to support their needs to store objects persistently. The objects associated with service bindings are independent of the objects bound through methods defined on DataManager. Services should insure that they use unique names for service bindings by using their class or package name as the prefix for the name.

    @Test public void testReportLocalFailure() throws Exception {
  final String appName = "TestReportFailure";


  // Create a dummy shutdown controller to log calls to the shutdown
  // method. NOTE: The controller does not actually shutdown the node
  DataService dataService = createDataService(serviceProps);
  WatchdogServiceImpl watchdogService = 
      new WatchdogServiceImpl(serviceProps, systemRegistry, 
            txnProxy, dummyShutdownCtrl);


  // Report a failure, which should shutdown the node
  watchdogService.reportFailure(dataService.getLocalNodeId(), 
              appName);


  // Node should not be alive since we reported a failure
  try {
      assertFalse(watchdogService.isLocalNodeAliveNonTransactional());
  } catch (Exception e) {
      fail("Not expecting an Exception: " + e.getLocalizedMessage());
  }
            
  // The shutdown controller should be incremented as a result of the 
  // failure being reported
  assertEquals(1, dummyShutdownCtrl.getShutdownCount());
  watchdogService.shutdown();
  dataService.shutdown();
    }

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    private WatchdogAndData createWatchdog(RecoveryListener listener)
  throws Exception
    {
  Properties props = SgsTestNode.getDefaultProperties(
      "TestWatchdogServiceImpl", serverNode, null);
  DataService data = createDataService(props);
  WatchdogServiceImpl watchdog = 
      new WatchdogServiceImpl(props, systemRegistry, txnProxy, 
            dummyShutdownCtrl);
  watchdog.addRecoveryListener(listener);
  watchdog.ready();
  System.err.println("Created node (" + data.getLocalNodeId() + ")");
  return new WatchdogAndData(watchdog, data);
    }

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     * @param  props the configuration properties for creating the service
     * @return  the new data service
     * @throws  Exception if a problem occurs when creating the service
     */
    private DataService createDataService(Properties props) throws Exception {
  DataService dataService =
      new DataServiceImpl(props, systemRegistry, txnProxy);
  ComponentRegistry services =
      new SingletonComponentRegistry(dataService);
  ComponentRegistry managers =
      new SingletonComponentRegistry(

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            this.properties = properties;
        }


        /** Starts the application, throwing an exception on failure. */
        public void run() throws Exception {
            DataService dataService =
                Kernel.proxy.getService(DataService.class);
            try {
                // test to see if this name if the listener is already bound...
                dataService.getServiceBinding(StandardProperties.APP_LISTENER);
            } catch (NameNotBoundException nnbe) {
                // ...if it's not, create and then bind the listener
                AppListener listener =
                    (new PropertiesWrapper(properties)).
                    getClassInstanceProperty(StandardProperties.APP_LISTENER,
                                             AppListener.class, new Class[] {});
                if (listener instanceof ManagedObject) {
                    dataService.setServiceBinding(
                            StandardProperties.APP_LISTENER, listener);
                } else {
                    dataService.setServiceBinding(
                            StandardProperties.APP_LISTENER,
                            new ManagedSerializable<AppListener>(listener));
                }


                // since we created the listener, we're the first one to

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