Example #1
0
  /**
   * Tests A|6, A|7, A|8 and B|7, B|8, B|9 -> we should have a subviews in MergeView consisting of
   * only 2 elements: A|5 and B|5
   */
  public void testMultipleViewsBySameMembers() throws Exception {
    View a1 =
        View.create(
            a.getAddress(),
            6,
            a.getAddress(),
            b.getAddress(),
            c.getAddress(),
            d.getAddress()); // {A,B,C,D}
    View a2 =
        View.create(a.getAddress(), 7, a.getAddress(), b.getAddress(), c.getAddress()); // {A,B,C}
    View a3 = View.create(a.getAddress(), 8, a.getAddress(), b.getAddress()); // {A,B}
    View a4 = View.create(a.getAddress(), 9, a.getAddress()); // {A}

    View b1 = View.create(b.getAddress(), 7, b.getAddress(), c.getAddress(), d.getAddress());
    View b2 = View.create(b.getAddress(), 8, b.getAddress(), c.getAddress());
    View b3 = View.create(b.getAddress(), 9, b.getAddress());

    Util.close(c, d); // not interested in those...

    // A and B cannot communicate:
    discard(true, a, b);

    // inject view A|6={A} into A and B|5={B} into B
    injectView(a4, a);
    injectView(b3, b);

    assert a.getView().equals(a4);
    assert b.getView().equals(b3);

    List<Event> merge_events = new ArrayList<>();
    for (View view : Arrays.asList(a3, a4, a2, a1)) {
      MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
      Message msg = new Message(null, a.getAddress(), null).putHeader(merge_id, hdr);
      merge_events.add(new Event(Event.MSG, msg));
    }
    for (View view : Arrays.asList(b2, b3, b1)) {
      MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
      Message msg = new Message(null, b.getAddress(), null).putHeader(merge_id, hdr);
      merge_events.add(new Event(Event.MSG, msg));
    }

    // A and B can communicate again
    discard(false, a, b);

    injectMergeEvents(merge_events, a, b);
    checkInconsistencies(a, b); // merge will happen between A and B
    Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b);
    System.out.println("A's view: " + a.getView() + "\nB's view: " + b.getView());
    assert a.getView().size() == 2;
    assert a.getView().containsMember(a.getAddress());
    assert a.getView().containsMember(b.getAddress());
    assert a.getView().equals(b.getView());
    for (View merge_view : Arrays.asList(getViewFromGMS(a), getViewFromGMS(b))) {
      System.out.println(merge_view);
      assert merge_view instanceof MergeView;
      List<View> subviews = ((MergeView) merge_view).getSubgroups();
      assert subviews.size() == 2;
    }
  }
Example #2
0
  /** Tests a merge between ViewIds of the same coord, e.g. A|6, A|7, A|8, A|9 */
  public void testViewsBySameCoord() {
    View v1 =
        View.create(
            a.getAddress(),
            6,
            a.getAddress(),
            b.getAddress(),
            c.getAddress(),
            d.getAddress()); // {A,B,C,D}
    View v2 =
        View.create(a.getAddress(), 7, a.getAddress(), b.getAddress(), c.getAddress()); // {A,B,C}
    View v3 = View.create(a.getAddress(), 8, a.getAddress(), b.getAddress()); // {A,B}
    View v4 = View.create(a.getAddress(), 9, a.getAddress()); // {A}

    Util.close(b, c, d); // not interested in those...

    MERGE3 merge = (MERGE3) a.getProtocolStack().findProtocol(MERGE3.class);
    for (View view : Arrays.asList(v1, v2, v4, v3)) {
      MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
      Message msg = new Message(null, a.getAddress(), null).putHeader(merge.getId(), hdr);
      merge.up(new Event(Event.MSG, msg));
    }

    merge.checkInconsistencies(); // no merge will happen

    Util.waitUntilAllChannelsHaveSameSize(10000, 500, a);
    System.out.println("A's view: " + a.getView());
    assert a.getView().size() == 1;
    assert a.getView().containsMember(a.getAddress());
  }
Example #3
0
  /** A: {A,B} B: {A,B} C: {C} C receives INFO from B only */
  public void testMergeWithIncompleteInfos() throws Exception {
    Util.close(d);
    enableInfoSender(false, a, b, c);
    View one = View.create(a.getAddress(), 10, a.getAddress(), b.getAddress());
    View two = View.create(c.getAddress(), 10, c.getAddress());
    injectView(one, a, b);
    injectView(two, c);
    enableInfoSender(false, a, b, c);

    Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b);
    Util.waitUntilAllChannelsHaveSameSize(10000, 500, c);
    System.out.printf("\nPartitions:\n");
    for (JChannel ch : Arrays.asList(a, b, c))
      System.out.println(ch.getName() + ": " + ch.getView());

    MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(one.getViewId(), null, null);
    Message msg =
        new Message(null, b.getAddress(), null)
            .putHeader(merge_id, hdr); // B sends the INFO message to C
    Event merge_event = new Event(Event.MSG, msg);
    MERGE3 merge = (MERGE3) c.getProtocolStack().findProtocol(MERGE3.class);
    merge.up(merge_event);
    enableInfoSender(true, a, b, c);
    System.out.println("\nEnabling INFO sending in merge protocols to merge subclusters");

    Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b, c);
    System.out.println("\nResulting views:");
    for (JChannel ch : Arrays.asList(a, b, c)) {
      GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
      View mv = gms.view();
      System.out.println(mv);
    }
    for (JChannel ch : Arrays.asList(a, b, c)) {
      GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
      View mv = gms.view();
      assert mv instanceof MergeView;
      assert mv.size() == 3;
      assert ((MergeView) mv).getSubgroups().size() == 2;
    }
    for (JChannel ch : Arrays.asList(a, b, c)) {
      View view = ch.getView();
      assert view.size() == 3 : "view should have 3 members: " + view;
    }
  }