Пример #1
0
  public void testHosts() throws Exception {
    ZkRing ring = ZkRing.create(getZk(), coordinator, ring_group_root, 1, null, 1);
    assertEquals(0, ring.getHosts().size());

    Host host = ring.addHost(LOCALHOST);
    assertEquals(LOCALHOST, host.getAddress());
    for (int i = 0; i < 20; i++) {
      if (!ring.getHosts().isEmpty()) {
        break;
      }
      Thread.sleep(100);
    }
    assertEquals(Collections.singleton(host), ring.getHosts());

    assertEquals(LOCALHOST, ring.getHostByAddress(LOCALHOST).getAddress());
    ring.close();

    // assure that hosts reload well, too
    ring = new ZkRing(getZk(), ring_root, null, coordinator);
    assertEquals(1, ring.getHosts().size());

    assertEquals(Collections.singleton(host), ring.getHosts());

    assertEquals(LOCALHOST, ring.getHostByAddress(LOCALHOST).getAddress());

    assertTrue(ring.removeHost(LOCALHOST));
    assertNull(ring.getHostByAddress(LOCALHOST));
    assertFalse(ring.removeHost(LOCALHOST));

    ring.close();
  }
Пример #2
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  public void testLoad() throws Exception {
    ZkRing ring = ZkRing.create(getZk(), coordinator, ring_group_root, 1, null, 1);
    ring.close();

    ring = new ZkRing(getZk(), ZkPath.append(ring_group_root, "ring-1"), null, coordinator);

    assertEquals("ring number", 1, ring.getRingNumber());
    assertNull("version number", ring.getCurrentVersionNumber());
    assertEquals("updating to version", Integer.valueOf(1), ring.getUpdatingToVersionNumber());
    assertEquals("number of hosts", 0, ring.getHosts().size());
    assertEquals("initial state", RingState.CLOSED, ring.getState());
    ring.close();
  }
Пример #3
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  public void testUpdatingSemantics() throws Exception {
    ZkRing ring = ZkRing.create(getZk(), coordinator, ring_group_root, 1, null, 1);

    assertTrue("should be updating", Rings.isUpdatePending(ring));
    assertNull("current version", ring.getCurrentVersionNumber());
    assertEquals(
        "updating_to_version number", Integer.valueOf(1), ring.getUpdatingToVersionNumber());

    ring.markUpdateComplete();

    assertFalse("updating", Rings.isUpdatePending(ring));
    assertEquals("current version", Integer.valueOf(1), ring.getCurrentVersionNumber());
    assertNull("updating to version", ring.getUpdatingToVersionNumber());

    ring.setUpdatingToVersion(7);
    assertTrue("should be updating", Rings.isUpdatePending(ring));
    assertEquals("current version", Integer.valueOf(1), ring.getCurrentVersionNumber());
    assertEquals(
        "updating_to_version number", Integer.valueOf(7), ring.getUpdatingToVersionNumber());

    ring.close();
  }