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.

     * which case the channel's name binding is not removed) and is
     * called when the channel is closed (in which case the channel's
     * name binding is removed).
     */
    private void removeChannel(boolean removeName) {
  DataService dataService = getDataService();
  if (removeName) {
      getChannelsMap().removeOverride(name);
  }
  dataService.removeObject(this);
  if (listenerRef != null) {
      ChannelListener maybeWrappedListener = listenerRef.get();
      if (maybeWrappedListener instanceof ManagedSerializable) {
    dataService.removeObject(maybeWrappedListener);
      }
  }
  BindingKeyedMap<EventQueue> eventQueuesMap =
      getEventQueuesMap(coordNodeId);
  eventQueuesMap.removeOverride(channelRefId.toString());
  EventQueue eventQueue = eventQueueRef.get();
  dataService.removeObject(eventQueue);
  if (isReliable()) {
      SavedMessageReaper.scheduleNewTask(channelRefId, true);
  }
    }

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      if (savedMessages.isEmpty()) {
    // Saved messages no longer exist, so "cancel" periodic task.
    return;
      } else {
    // Remove messages saved past their expiration time.
    DataService dataService = getDataService();
    TaskManager taskManager = AppContext.getTaskManager();
    Iterator<ChannelMessageInfo> iter =
        savedMessages.values().iterator();
    while (taskManager.shouldContinue() && iter.hasNext()) {
        ChannelMessageInfo messageInfo = iter.next();
        if (messageInfo.isExpired()) {
      if (logger.isLoggable(Level.FINEST)) {
          logger.log(
        Level.FINEST,
        "Removing saved message, channel:{0} " +
        "timestamp:{1}",
        HexDumper.toHexString(channelRefId),
        messageInfo.timestamp);
      }
      iter.remove();
      dataService.removeObject(messageInfo);
        } else {
      break;
        }
    }
    if (!savedMessages.isEmpty()) {

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  /**
   * Constructs an event queue for the specified {@code channel}.
   */
  EventQueue(ChannelImpl channel) {
      DataService dataService = getDataService();
      channelRef = dataService.createReference(channel);
      queueRef = dataService.createReference(
    new ManagedQueue<ChannelEvent>());
      writeBufferAvailable = channel.getWriteBufferCapacity();
  }

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         getLocalNodeId(),
         HexDumper.toHexString(channel.channelRefId));
      }
      ChannelServiceImpl channelService =
    ChannelServiceImpl.getInstance();
      DataService dataService = getDataService();


      /*
       * Process channel events
       */
      int eventsPerTxn = channelService.eventsPerTxn;
      ManagedQueue<ChannelEvent> eventQueue = getQueue();
      
      boolean completed = false;
      do {
    ChannelEvent event = eventQueue.peek();
    if (event == null) {
        //  No more events to process, so return.
        if (logger.isLoggable(Level.FINEST)) {
      logger.log(Level.FINEST,
           "coordinator:{0} channelId:{1} " +
           "no more events",
           getLocalNodeId(),
           HexDumper.toHexString(channel.channelRefId));
        }
        return;
    } else if (event.isCompleted()) {
        // Remove completed event and get next event to
        // process. Return if there are no more events.
        if (logger.isLoggable(Level.FINEST)) {
      logger.log(Level.FINEST,
           "coordinator:{0} channelId:{1} " +
           "removing completed event:{2}",
           getLocalNodeId(),
           HexDumper.toHexString(channel.channelRefId),
           event);
        }
        eventQueue.poll();
        event = eventQueue.peek();
        if (event == null) {
      if (logger.isLoggable(Level.FINEST)) {
          logger.log(Level.FINEST,
               "coordinator:{0} channelId:{1} " +
               "no more events",
               getLocalNodeId(),
               HexDumper.toHexString(
             channel.channelRefId));
      }
      return;
        }
    } else if (event.isProcessing()) {
        if (logger.isLoggable(Level.FINEST)) {
      logger.log(Level.FINEST,
           "coordinator:{0} channelId:{1} " +
           "event:{2} is already processing",
           getLocalNodeId(),
           HexDumper.toHexString(channel.channelRefId),
           event);
        }
        return;
    } 


    int cost = event.getCost();
    if (cost > 0) {
        dataService.markForUpdate(this);
        writeBufferAvailable += cost;
        
        if (logger.isLoggable(Level.FINEST)) {
      logger.log(
          Level.FINEST,

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    }


    /* -- Test constructor -- */


    @Test public void testConstructor() throws Exception {
  DataService dataService = null;
        WatchdogServiceImpl watchdog = null;
        try {
      dataService = createDataService(serviceProps);
            watchdog = new WatchdogServiceImpl(
    serviceProps, systemRegistry, txnProxy, dummyShutdownCtrl);  
        } finally {
      if (dataService != null) dataService.shutdown();
            if (watchdog != null) watchdog.shutdown();
        }
    }

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            public void run() throws Exception {
                checkHealth(watchdogService, Health.GREEN);
            }
        }, taskOwner);


  DataService dataService = createDataService(serviceProps);
  final WatchdogServiceImpl watchdog =
      new WatchdogServiceImpl(serviceProps, systemRegistry, txnProxy,
            dummyShutdownCtrl);
  try {
            txnScheduler.runTask(new TestAbstractKernelRunnable() {
                public void run() throws Exception {
                    checkHealth(watchdogService, Health.GREEN);
                }
            }, taskOwner);


      watchdogService.shutdown();
      // wait for watchdog's renew to fail...
      Thread.sleep(renewTime * 4);


            txnScheduler.runTask(new TestAbstractKernelRunnable() {
                public void run() throws Exception {
                    checkHealth(watchdog, Health.RED);
                }
            }, taskOwner);


  } finally {
      watchdog.shutdown();
      dataService.shutdown();
  }
    }

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                          "to return true");
                }
            }
        }, taskOwner);


  DataService dataService = createDataService(serviceProps);
  final WatchdogServiceImpl watchdog =
      new WatchdogServiceImpl(serviceProps, systemRegistry, txnProxy,
            dummyShutdownCtrl);
  try {
            txnScheduler.runTask(new TestAbstractKernelRunnable() {
                public void run() throws Exception {
                    if (! watchdogService.isLocalNodeAlive()) {
                        fail("Expected watchdogService.isLocalNodeAlive() " +
                             "to return true");
                    }
                }
            }, taskOwner);


      watchdogService.shutdown();
      // wait for watchdog's renew to fail...
      Thread.sleep(renewTime * 4);


            txnScheduler.runTask(new TestAbstractKernelRunnable() {
                public void run() throws Exception {
                    if (watchdog.isLocalNodeAlive()) {
                        fail("Expected watchdogService.isLocalNodeAlive() " +
                             "to return false");
                    }
                }
            }, taskOwner);
      
  } finally {
      watchdog.shutdown();
      dataService.shutdown();
  }
    }

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      fail("Expected watchdogService.isLocalNodeAlive" +
     "NonTransactional() to return true");
  }


  int port = watchdogService.getServer().getPort();
  DataService dataService = createDataService(serviceProps);
  WatchdogServiceImpl watchdog =
      new WatchdogServiceImpl(serviceProps, systemRegistry, txnProxy,
            dummyShutdownCtrl);
  try {
      if (! watchdog.isLocalNodeAliveNonTransactional()) {
    fail("Expected watchdog.isLocalNodeAliveNonTransactional() " +
         "to return true");
      }
      watchdogService.shutdown();
      // wait for watchdog's renew to fail...
      Thread.sleep(renewTime * 4);
      if (watchdog.isLocalNodeAliveNonTransactional()) {
    fail("Expected watchdog.isLocalNodeAliveNonTransactional() " +
         "to return false");
      }
      
  } finally {
      dataService.shutdown();
      watchdog.shutdown();
  }
    }

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      new HashMap<WatchdogServiceImpl, WatchdogInfo>();
  try {
      for (int i = 0; i < 5; i++) {
    Properties props = SgsTestNode.getDefaultProperties(
        "TestWatchdogServiceImpl", serverNode, null);
    DataService dataService = createDataService(props);
    WatchdogServiceImpl watchdog =
        new WatchdogServiceImpl(props, systemRegistry, txnProxy,
              dummyShutdownCtrl);
    DummyNodeListener listener = new DummyNodeListener();
    watchdog.addNodeListener(listener);
    watchdogMap.put(
        watchdog, new WatchdogInfo(listener, dataService));
      }
  
      // shutdown watchdog server
      watchdogService.shutdown();


      Thread.sleep(renewTime * 4);


      for (WatchdogServiceImpl watchdog : watchdogMap.keySet()) {
    WatchdogInfo info = watchdogMap.get(watchdog);
    DummyNodeListener listener = info.listener;
    DataService dataService = info.dataService;
    Set<Node> nodes = listener.getFailedNodes();
    System.err.println(
        "failedNodes for " + dataService.getLocalNodeId() +
        ": " + nodes);
    if (nodes.size() != 6) {
        fail("Expected 6 failed nodes, got " + nodes.size());
    }
    for (Node node : nodes) {

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    @Test(expected = IllegalStateException.class)
    public void testAddRecoveryListenerServiceShuttingDown()
  throws Exception
    {
  DataService dataService = createDataService(serviceProps);
  WatchdogServiceImpl watchdog = new WatchdogServiceImpl(
      serviceProps, systemRegistry, txnProxy, dummyShutdownCtrl);
  watchdog.shutdown();
  watchdog.addRecoveryListener(new DummyRecoveryListener());
  dataService.shutdown();
    }

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