Ejemplo n.º 1
0
  public ServerObject serverFor(Object o) {

    ServerObject server = serving.get(o);

    if (server == null) {

      server = new ServerObject(objectsId.getAndIncrement(), o);

      serving.put(o, server);
      servingById.put(server.getId(), server);
    }

    return server;
  }
Ejemplo n.º 2
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  /** @param entry Entry to add. */
  void onAdded(GridDhtCacheEntry entry) {
    GridDhtPartitionState state = state();

    if (state == EVICTED)
      throw new GridDhtInvalidPartitionException(
          id, "Adding entry to invalid partition [part=" + id + ']');

    map.put(entry.key(), entry);

    if (!entry.isInternal()) mapPubSize.increment();
  }
Ejemplo n.º 3
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  protected Request request(long objectId, Method method, Object[] args, boolean expectsResponse)
      throws IOException {
    Request r = new Request(this, method, args);
    long requestId = -1;

    if (expectsResponse) {
      requestId = nextRequest.getAndIncrement();
      requests.put(requestId, r);
    }

    sendRequest(objectId, requestId, r);

    return r;
  }
Ejemplo n.º 4
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  protected void handleTaskSubmittedRequest(
      Runnable runnable, Address source, long requestId, long threadId) {
    // We store in our map so that when that task is
    // finished so that we can send back to the owner
    // with the results
    _running.put(runnable, new Owner(source, requestId));
    // We give the task to the thread that is now waiting for it to be returned
    // If we can't offer then we have to respond back to
    // caller that we can't handle it.  They must have
    // gotten our address when we had a consumer, but
    // they went away between then and now.
    boolean received;
    try {
      _tasks.put(threadId, runnable);

      CyclicBarrier barrier = _taskBarriers.remove(threadId);
      if (received = (barrier != null)) {
        // Only wait 10 milliseconds, in case if the consumer was
        // stopped between when we were told it was available and now
        barrier.await(10, TimeUnit.MILLISECONDS);
      }
    } catch (InterruptedException e) {
      if (log.isDebugEnabled()) log.debug("Interrupted while handing off task");
      Thread.currentThread().interrupt();
      received = false;
    } catch (BrokenBarrierException e) {
      if (log.isDebugEnabled())
        log.debug(
            "Consumer " + threadId + " has been interrupted, " + "must retry to submit elsewhere");
      received = false;
    } catch (TimeoutException e) {
      if (log.isDebugEnabled())
        log.debug("Timeout waiting to hand off to barrier, consumer " + threadId + " must be slow");
      // This should only happen if the consumer put the latch then got
      // interrupted but hadn't yet removed the latch, should almost never
      // happen
      received = false;
    }

    if (!received) {
      // Clean up the tasks request
      _tasks.remove(threadId);
      if (log.isDebugEnabled()) log.debug("Run rejected not able to pass off to consumer");
      // If we couldn't hand off the task we have to tell the client
      // and also reupdate the coordinator that our consumer is ready
      sendRequest(source, Type.RUN_REJECTED, requestId, null);
      _running.remove(runnable);
    }
  }
Ejemplo n.º 5
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  protected void handleView(View view) {
    this.view = view;
    if (log.isDebugEnabled()) log.debug("view=" + view);
    List<Address> members = view.getMembers();

    _consumerLock.lock();
    try {
      // This removes the consumers that were registered that are now gone
      Iterator<Owner> iterator = _consumersAvailable.iterator();
      while (iterator.hasNext()) {
        Owner owner = iterator.next();
        if (!members.contains(owner.getAddress())) {
          iterator.remove();
          sendRemoveConsumerRequest(owner);
        }
      }

      // This removes the tasks that those requestors are gone
      iterator = _runRequests.iterator();
      while (iterator.hasNext()) {
        Owner owner = iterator.next();
        if (!members.contains(owner.getAddress())) {
          iterator.remove();
          sendRemoveRunRequest(owner);
        }
      }

      synchronized (_awaitingReturn) {
        for (Entry<Owner, Runnable> entry : _awaitingReturn.entrySet()) {
          // The person currently servicing our request has gone down
          // without completing so we have to keep our request alive by
          // sending ours back to the coordinator
          Owner owner = entry.getKey();
          if (!members.contains(owner.getAddress())) {
            Runnable runnable = entry.getValue();
            // We need to register the request id before sending the request back to the coordinator
            // in case if our task gets picked up since another was removed
            _requestId.put(runnable, owner.getRequestId());
            _awaitingConsumer.add(runnable);
            sendToCoordinator(RUN_REQUEST, owner.getRequestId(), local_addr);
          }
        }
      }
    } finally {
      _consumerLock.unlock();
    }
  }
  /**
   * Processes cache query request.
   *
   * @param sndId Sender node id.
   * @param req Query request.
   */
  @SuppressWarnings("unchecked")
  @Override
  void processQueryRequest(UUID sndId, GridCacheQueryRequest req) {
    if (req.cancel()) {
      cancelIds.add(new CancelMessageId(req.id(), sndId));

      if (req.fields()) removeFieldsQueryResult(sndId, req.id());
      else removeQueryResult(sndId, req.id());
    } else {
      if (!cancelIds.contains(new CancelMessageId(req.id(), sndId))) {
        if (!F.eq(req.cacheName(), cctx.name())) {
          GridCacheQueryResponse res =
              new GridCacheQueryResponse(
                  cctx.cacheId(),
                  req.id(),
                  new IgniteCheckedException(
                      "Received request for incorrect cache [expected="
                          + cctx.name()
                          + ", actual="
                          + req.cacheName()));

          sendQueryResponse(sndId, res, 0);
        } else {
          threads.put(req.id(), Thread.currentThread());

          try {
            GridCacheQueryInfo info = distributedQueryInfo(sndId, req);

            if (info == null) return;

            if (req.fields()) runFieldsQuery(info);
            else runQuery(info);
          } catch (Throwable e) {
            U.error(log(), "Failed to run query.", e);

            sendQueryResponse(
                sndId, new GridCacheQueryResponse(cctx.cacheId(), req.id(), e.getCause()), 0);

            if (e instanceof Error) throw (Error) e;
          } finally {
            threads.remove(req.id());
          }
        }
      }
    }
  }
Ejemplo n.º 7
0
 private HostConnectionPool addHost(Host host) {
   try {
     HostDistance distance = loadBalancer.distance(host);
     if (distance == HostDistance.IGNORED) {
       return pools.get(host);
     } else {
       logger.debug("Adding {} to list of queried hosts", host);
       return pools.put(host, new HostConnectionPool(host, distance, this));
     }
   } catch (AuthenticationException e) {
     logger.error("Error creating pool to {} ({})", host, e.getMessage());
     host.getMonitor()
         .signalConnectionFailure(new ConnectionException(e.getHost(), e.getMessage()));
     return pools.get(host);
   } catch (ConnectionException e) {
     logger.debug("Error creating pool to {} ({})", host, e.getMessage());
     host.getMonitor().signalConnectionFailure(e);
     return pools.get(host);
   }
 }
Ejemplo n.º 8
0
  public Object down(Event evt) {
    switch (evt.getType()) {
      case ExecutorEvent.TASK_SUBMIT:
        Runnable runnable = evt.getArg();
        // We are limited to a number of concurrent request id's
        // equal to 2^63-1.  This is quite large and if it
        // overflows it will still be positive
        long requestId = Math.abs(counter.getAndIncrement());
        if (requestId == Long.MIN_VALUE) {
          // TODO: need to fix this it isn't safe for concurrent modifications
          counter.set(0);
          requestId = Math.abs(counter.getAndIncrement());
        }

        // Need to make sure to put the requestId in our map before
        // adding the runnable to awaiting consumer in case if
        // coordinator sent a consumer found and their original task
        // is no longer around
        // see https://issues.jboss.org/browse/JGRP-1744
        _requestId.put(runnable, requestId);

        _awaitingConsumer.add(runnable);

        sendToCoordinator(RUN_REQUEST, requestId, local_addr);
        break;
      case ExecutorEvent.CONSUMER_READY:
        Thread currentThread = Thread.currentThread();
        long threadId = currentThread.getId();
        _consumerId.put(threadId, PRESENT);
        try {
          for (; ; ) {
            CyclicBarrier barrier = new CyclicBarrier(2);
            _taskBarriers.put(threadId, barrier);

            // We only send to the coordinator that we are ready after
            // making the barrier, wait for request to come and let
            // us free
            sendToCoordinator(Type.CONSUMER_READY, threadId, local_addr);

            try {
              barrier.await();
              break;
            } catch (BrokenBarrierException e) {
              if (log.isDebugEnabled())
                log.debug(
                    "Producer timed out before we picked up"
                        + " the task, have to tell coordinator"
                        + " we are still good.");
            }
          }
          // This should always be non nullable since the latch
          // was freed
          runnable = _tasks.remove(threadId);
          _runnableThreads.put(runnable, currentThread);
          return runnable;
        } catch (InterruptedException e) {
          if (log.isDebugEnabled()) log.debug("Consumer " + threadId + " stopped via interrupt");
          sendToCoordinator(Type.CONSUMER_UNREADY, threadId, local_addr);
          Thread.currentThread().interrupt();
        } finally {
          // Make sure the barriers are cleaned up as well
          _taskBarriers.remove(threadId);
          _consumerId.remove(threadId);
        }
        break;
      case ExecutorEvent.TASK_COMPLETE:
        Object arg = evt.getArg();
        Throwable throwable = null;
        if (arg instanceof Object[]) {
          Object[] array = (Object[]) arg;
          runnable = (Runnable) array[0];
          throwable = (Throwable) array[1];
        } else {
          runnable = (Runnable) arg;
        }
        Owner owner = _running.remove(runnable);
        // This won't remove anything if owner doesn't come back
        _runnableThreads.remove(runnable);

        Object value = null;
        boolean exception = false;
        if (throwable != null) {
          // InterruptedException is special telling us that
          // we interrupted the thread while waiting but still got
          // a task therefore we have to reject it.
          if (throwable instanceof InterruptedException) {
            if (log.isDebugEnabled())
              log.debug("Run rejected due to interrupted exception returned");
            sendRequest(owner.address, Type.RUN_REJECTED, owner.requestId, null);
            break;
          }
          value = throwable;
          exception = true;
        } else if (runnable instanceof RunnableFuture<?>) {
          RunnableFuture<?> future = (RunnableFuture<?>) runnable;

          boolean interrupted = false;
          boolean gotValue = false;

          // We have the value, before we interrupt at least get it!
          while (!gotValue) {
            try {
              value = future.get();
              gotValue = true;
            } catch (InterruptedException e) {
              interrupted = true;
            } catch (ExecutionException e) {
              value = e.getCause();
              exception = true;
              gotValue = true;
            }
          }

          if (interrupted) {
            Thread.currentThread().interrupt();
          }
        }

        if (owner != null) {
          final Type type;
          final Object valueToSend;
          if (value == null) {
            type = Type.RESULT_SUCCESS;
            valueToSend = value;
          }
          // Both serializable values and exceptions would go in here
          else if (value instanceof Serializable
              || value instanceof Externalizable
              || value instanceof Streamable) {
            type = exception ? Type.RESULT_EXCEPTION : Type.RESULT_SUCCESS;
            valueToSend = value;
          }
          // This would happen if the value wasn't serializable,
          // so we have to send back to the client that the class
          // wasn't serializable
          else {
            type = Type.RESULT_EXCEPTION;
            valueToSend = new NotSerializableException(value.getClass().getName());
          }

          if (local_addr.equals(owner.getAddress())) {
            if (log.isTraceEnabled())
              log.trace(
                  "[redirect] <--> ["
                      + local_addr
                      + "] "
                      + type.name()
                      + " ["
                      + value
                      + (owner.requestId != -1 ? " request id: " + owner.requestId : "")
                      + "]");
            if (type == Type.RESULT_SUCCESS) {
              handleValueResponse(local_addr, owner.requestId, valueToSend);
            } else if (type == Type.RESULT_EXCEPTION) {
              handleExceptionResponse(local_addr, owner.requestId, (Throwable) valueToSend);
            }
          } else {
            sendRequest(owner.getAddress(), type, owner.requestId, valueToSend);
          }
        } else {
          if (log.isTraceEnabled()) {
            log.trace("Could not return result - most likely because it was interrupted");
          }
        }
        break;
      case ExecutorEvent.TASK_CANCEL:
        Object[] array = evt.getArg();
        runnable = (Runnable) array[0];

        if (_awaitingConsumer.remove(runnable)) {
          _requestId.remove(runnable);
          ExecutorNotification notification = notifiers.remove(runnable);
          if (notification != null) {
            notification.interrupted(runnable);
          }
          if (log.isTraceEnabled())
            log.trace("Cancelled task " + runnable + " before it was picked up");
          return Boolean.TRUE;
        }
        // This is guaranteed to not be null so don't take cost of auto unboxing
        else if (array[1] == Boolean.TRUE) {
          owner = removeKeyForValue(_awaitingReturn, runnable);
          if (owner != null) {
            Long requestIdValue = _requestId.remove(runnable);
            // We only cancel if the requestId is still available
            // this means the result hasn't been returned yet and
            // we still have a chance to interrupt
            if (requestIdValue != null) {
              if (requestIdValue != owner.getRequestId()) {
                log.warn("Cancelling requestId didn't match waiting");
              }
              sendRequest(owner.getAddress(), Type.INTERRUPT_RUN, owner.getRequestId(), null);
            }
          } else {
            if (log.isTraceEnabled()) log.warn("Couldn't interrupt server task: " + runnable);
          }
          ExecutorNotification notification = notifiers.remove(runnable);
          if (notification != null) {
            notification.interrupted(runnable);
          }
          return Boolean.TRUE;
        } else {
          return Boolean.FALSE;
        }
      case ExecutorEvent.ALL_TASK_CANCEL:
        array = evt.getArg();

        // This is a RunnableFuture<?> so this cast is okay
        @SuppressWarnings("unchecked")
        Set<Runnable> runnables = (Set<Runnable>) array[0];
        Boolean booleanValue = (Boolean) array[1];

        List<Runnable> notRan = new ArrayList<>();

        for (Runnable cancelRunnable : runnables) {
          // Removed from the consumer
          if (!_awaitingConsumer.remove(cancelRunnable) && booleanValue == Boolean.TRUE) {
            synchronized (_awaitingReturn) {
              owner = removeKeyForValue(_awaitingReturn, cancelRunnable);
              if (owner != null) {
                Long requestIdValue = _requestId.remove(cancelRunnable);
                if (requestIdValue != owner.getRequestId()) {
                  log.warn("Cancelling requestId didn't match waiting");
                }
                sendRequest(owner.getAddress(), Type.INTERRUPT_RUN, owner.getRequestId(), null);
              }
              ExecutorNotification notification = notifiers.remove(cancelRunnable);
              if (notification != null) {
                log.trace("Notifying listener");
                notification.interrupted(cancelRunnable);
              }
            }
          } else {
            _requestId.remove(cancelRunnable);
            notRan.add(cancelRunnable);
          }
        }
        return notRan;
      case Event.SET_LOCAL_ADDRESS:
        local_addr = evt.getArg();
        break;

      case Event.VIEW_CHANGE:
        handleView(evt.getArg());
        break;
    }
    return down_prot.down(evt);
  }
Ejemplo n.º 9
0
 public void setVersion(InetAddress address, int version) {
   Integer old = versions.put(address, version);
   EndpointState state = endpointStateMap_.get(address);
   if (state == null) addSavedEndpoint(address);
 }
Ejemplo n.º 10
0
  /**
   * Grabs local events and detects if events was lost since last poll.
   *
   * @param ignite Target grid.
   * @param evtOrderKey Unique key to take last order key from node local map.
   * @param evtThrottleCntrKey Unique key to take throttle count from node local map.
   * @param evtTypes Event types to collect.
   * @param evtMapper Closure to map grid events to Visor data transfer objects.
   * @return Collections of node events
   */
  public static Collection<VisorGridEvent> collectEvents(
      Ignite ignite,
      String evtOrderKey,
      String evtThrottleCntrKey,
      final int[] evtTypes,
      IgniteClosure<Event, VisorGridEvent> evtMapper) {
    assert ignite != null;
    assert evtTypes != null && evtTypes.length > 0;

    ConcurrentMap<String, Long> nl = ignite.cluster().nodeLocalMap();

    final long lastOrder = getOrElse(nl, evtOrderKey, -1L);
    final long throttle = getOrElse(nl, evtThrottleCntrKey, 0L);

    // When we first time arrive onto a node to get its local events,
    // we'll grab only last those events that not older than given period to make sure we are
    // not grabbing GBs of data accidentally.
    final long notOlderThan = System.currentTimeMillis() - EVENTS_COLLECT_TIME_WINDOW;

    // Flag for detecting gaps between events.
    final AtomicBoolean lastFound = new AtomicBoolean(lastOrder < 0);

    IgnitePredicate<Event> p =
        new IgnitePredicate<Event>() {
          /** */
          private static final long serialVersionUID = 0L;

          @Override
          public boolean apply(Event e) {
            // Detects that events were lost.
            if (!lastFound.get() && (lastOrder == e.localOrder())) lastFound.set(true);

            // Retains events by lastOrder, period and type.
            return e.localOrder() > lastOrder
                && e.timestamp() > notOlderThan
                && F.contains(evtTypes, e.type());
          }
        };

    Collection<Event> evts = ignite.events().localQuery(p);

    // Update latest order in node local, if not empty.
    if (!evts.isEmpty()) {
      Event maxEvt = Collections.max(evts, EVTS_ORDER_COMPARATOR);

      nl.put(evtOrderKey, maxEvt.localOrder());
    }

    // Update throttle counter.
    if (!lastFound.get())
      nl.put(evtThrottleCntrKey, throttle == 0 ? EVENTS_LOST_THROTTLE : throttle - 1);

    boolean lost = !lastFound.get() && throttle == 0;

    Collection<VisorGridEvent> res = new ArrayList<>(evts.size() + (lost ? 1 : 0));

    if (lost) res.add(new VisorGridEventsLost(ignite.cluster().localNode().id()));

    for (Event e : evts) {
      VisorGridEvent visorEvt = evtMapper.apply(e);

      if (visorEvt != null) res.add(visorEvt);
    }

    return res;
  }