Ejemplo n.º 1
0
  /**
   * Listen to events coming from all grid nodes.
   *
   * @throws GridException If failed.
   */
  private static void remoteListen() throws GridException {
    Grid g = GridGain.grid();

    GridCache<Integer, String> cache = g.cache(CACHE_NAME);

    // Register remote event listeners on all nodes running cache.
    GridFuture<?> fut =
        g.forCache(CACHE_NAME)
            .events()
            .remoteListen(
                // This optional local callback is called for each event notification
                // that passed remote predicate filter.
                new GridBiPredicate<UUID, GridCacheEvent>() {
                  @Override
                  public boolean apply(UUID nodeId, GridCacheEvent evt) {
                    System.out.println();
                    System.out.println(
                        "Received event [evt="
                            + evt.name()
                            + ", key="
                            + evt.key()
                            + ", oldVal="
                            + evt.oldValue()
                            + ", newVal="
                            + evt.newValue());

                    return true; // Return true to continue listening.
                  }
                },
                // Remote filter which only accepts events for keys that are
                // greater or equal than 10 and if local node is primary for this key.
                new GridPredicate<GridCacheEvent>() {
                  /** Auto-inject grid instance. */
                  @GridInstanceResource private Grid g;

                  @Override
                  public boolean apply(GridCacheEvent evt) {
                    Integer key = evt.key();

                    return key >= 10
                        && g.cache(CACHE_NAME).affinity().isPrimary(g.localNode(), key);
                  }
                },
                // Types of events for which listeners are registered.
                EVT_CACHE_OBJECT_PUT,
                EVT_CACHE_OBJECT_READ,
                EVT_CACHE_OBJECT_REMOVED);

    // Wait until event listeners are subscribed on all nodes.
    fut.get();

    int keyCnt = 20;

    // Generate cache events.
    for (int i = 0; i < keyCnt; i++) cache.putx(i, Integer.toString(i));
  }
  /** @throws Exception If failed. */
  public void testInvalidateFlag() throws Exception {
    GridEx g0 = grid(0);

    GridCache<String, String> cache = g0.cache(PARTITIONED_CACHE_NAME);

    String key = null;

    for (int i = 0; i < 10_000; i++) {
      if (!cache.affinity().isPrimaryOrBackup(g0.localNode(), String.valueOf(i))) {
        key = String.valueOf(i);

        break;
      }
    }

    assertNotNull(key);

    cache.put(key, key); // Create entry in near cache, it is invalidated if INVALIDATE flag is set.

    assertNotNull(cache.peek(key));

    GridClientData d = client.data(PARTITIONED_CACHE_NAME);

    d.flagsOn(GridClientCacheFlag.INVALIDATE).put(key, "zzz");

    for (Grid g : G.allGrids()) {
      cache = g.cache(PARTITIONED_CACHE_NAME);

      if (cache.affinity().isPrimaryOrBackup(g.localNode(), key))
        assertEquals("zzz", cache.peek(key));
      else assertNull(cache.peek(key));
    }
  }