Package net.kuujo.copycat.cluster

Examples of net.kuujo.copycat.cluster.Member

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  public void testCompactEndOfLog() throws Exception {
    appendEntries();
    log.compact(5,
      new SnapshotEntry(1, new ClusterConfig()
        .withLocalMember(new Member("foo"))
        .withRemoteMembers(new Member("bar"), new Member("baz")), "Hello world!".getBytes()));

    assertEquals(log.firstIndex(), 5);
    assertEquals(log.lastIndex(), 5);
    SnapshotEntry entry = log.getEntry(5);
    assertEquals(entry.term(), 1);
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  public void testCompactMiddleOfLog() throws Exception {
    appendEntries();
    log.compact(3,
      new SnapshotEntry(1, new ClusterConfig()
        .withLocalMember(new Member("foo"))
        .withRemoteMembers(new Member("bar"), new Member("baz")), "Hello world!".getBytes()));

    assertEquals(log.firstIndex(), 3);
    assertEquals(log.lastIndex(), 5);
    SnapshotEntry entry = log.getEntry(3);
    assertEquals(entry.term(), 1);
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    assertNotEquals(size, size = log.size());
  }

  private void appendEntries() {
    log.appendEntry(new SnapshotEntry(1, new ClusterConfig()
      .withLocalMember(new Member("foo"))
      .withRemoteMembers(new Member("bar"), new Member("baz")), new byte[10]));
    log.appendEntry(new ConfigurationEntry(1, new ClusterConfig()
      .withLocalMember(new Member("foo"))
      .withRemoteMembers(new Member("bar"), new Member("baz"))));
    log.appendEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")));
    log.appendEntry(new OperationEntry(1, "bar", Arrays.asList("bar", "baz")));
    log.appendEntry(new OperationEntry(1, "baz", Arrays.asList("bar", "baz")));
  }
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   * @param members The test node cluster members.
   * @return The test node.
   */
  public TestNode withCluster(String... members) {
    ClusterConfig<Member> config = new ClusterConfig<>();
    config.setLocalMember(new Member(members[0]));
    for (int i = 1; i < members.length; i++) {
      config.addRemoteMember(new Member(members[i]));
    }
    this.cluster = new Cluster<>(config);
    return this;
  }
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  private Object[][] entryProvider() {
    return new Object[][] {
      {OperationEntry.class, new OperationEntry(1, "foo", Arrays.asList("bar", "baz"))},
      {
        ConfigurationEntry.class,
        new ConfigurationEntry(1, new ClusterConfig().withLocalMember(new Member("foo"))
          .withRemoteMembers(new Member("bar"), new Member("baz")))},
      {
        SnapshotEntry.class,
        new SnapshotEntry(1, new ClusterConfig().withLocalMember(new Member("foo"))
          .withRemoteMembers(new Member("bar"), new Member("baz")), new byte[] {1, 2, 3})}};
  }
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  /**
   * Tests writing/reading a sync request.
   */
  public void testWriteReadSyncRequest() {
    ClusterConfig<Member> clusterConfig = new ClusterConfig<>()
      .withLocalMember(new Member(new MemberConfig("foo")))
      .withRemoteMembers(new Member(new MemberConfig("bar")), new Member(new MemberConfig("baz")));
    SnapshotEntry snapshotEntry = new SnapshotEntry(1, clusterConfig, new byte[50]);
    ConfigurationEntry configurationEntry = new ConfigurationEntry(1, clusterConfig);
    OperationEntry operationEntry = new OperationEntry(1, "foo", Arrays.asList("bar", "baz"));
    List<Entry> entries = Arrays.asList(snapshotEntry, configurationEntry, operationEntry);
    SyncRequest request = new SyncRequest(UUID.randomUUID().toString(), 1, "foo", 4, 1, entries, 3);
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      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("foo"))
          .withRemoteMembers(new Member("bar"), new Member("baz"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.FOLLOWER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node1);

    TestNode node2 = new TestNode()
      .withCluster("bar", "foo", "baz")
      .withProtocol(protocol)
      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("bar"))
          .withRemoteMembers(new Member("foo"), new Member("baz"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.FOLLOWER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node2);

    TestNode node3 = new TestNode()
      .withCluster("baz", "bar", "foo")
      .withProtocol(protocol)
      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("baz"))
          .withRemoteMembers(new Member("foo"), new Member("bar"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.LEADER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node3);

    cluster.start();

    node3.instance().cluster().config().addRemoteMember(new Member("foobarbaz"));

    // First, the leader should have replicated a join configuration.
    node1.await().membershipChange();
    Assert.assertNotNull(node1.instance().clusterManager().cluster().remoteMember("foobarbaz"));
    cluster.stop();
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      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("foo"))
          .withRemoteMembers(new Member("bar"), new Member("baz"), new Member("foobarbaz"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.FOLLOWER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node1);

    TestNode node2 = new TestNode()
      .withCluster("bar", "foo", "baz", "foobarbaz")
      .withProtocol(protocol)
      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("bar"))
          .withRemoteMembers(new Member("foo"), new Member("baz"), new Member("foobarbaz"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.FOLLOWER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node2);

    TestNode node3 = new TestNode()
      .withCluster("baz", "bar", "foo", "foobarbaz")
      .withProtocol(protocol)
      .withTerm(3)
      .withLeader("baz")
      .withStateMachine(new TestStateMachine())
      .withLog(new TestLog()
        .withEntry(new ConfigurationEntry(1, new ClusterConfig()
          .withLocalMember(new Member("baz"))
          .withRemoteMembers(new Member("foo"), new Member("bar"), new Member("foobarbaz"))))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(1, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz")))
        .withEntry(new OperationEntry(2, "foo", Arrays.asList("bar", "baz"))))
      .withState(CopycatState.LEADER)
      .withCommitIndex(6)
      .withLastApplied(6);
    cluster.addNode(node3);

    cluster.start();

    node3.instance().cluster().config().removeRemoteMember(new Member("foobarbaz"));

    // First, the leader should have replicated a join configuration.
    if (node1.instance().clusterManager().cluster().remoteMember("foobarbaz") == null) {
      Assert.assertNull(node1.instance().clusterManager().cluster().remoteMember("foobarbaz"));
    } else {
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   */
  public void testRegisterAndUnregisterVoteCastHandlerByMethod() {
    AtomicBoolean succeeded = new AtomicBoolean();
    EventHandler<VoteCastEvent> handler = (event) -> succeeded.set(true);
    handlers.voteCast().registerHandler(handler);
    handlers.voteCast().handle(new VoteCastEvent(1, new Member("foo")));
    Assert.assertTrue(succeeded.get());
    handlers.voteCast().unregisterHandler(handler);
    succeeded.set(false);
    handlers.voteCast().handle(new VoteCastEvent(1, new Member("foo")));
    Assert.assertFalse(succeeded.get());
  }
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   */
  public void testRegisterAndUnregisterVoteCastHandlerByEvent() {
    AtomicBoolean succeeded = new AtomicBoolean();
    EventHandler<VoteCastEvent> handler = (event) -> succeeded.set(true);
    handlers.event(VoteCastEvent.class).registerHandler(handler);
    handlers.event(VoteCastEvent.class).handle(new VoteCastEvent(1, new Member("foo")));
    Assert.assertTrue(succeeded.get());
    handlers.event(VoteCastEvent.class).unregisterHandler(handler);
    succeeded.set(false);
    handlers.event(VoteCastEvent.class).handle(new VoteCastEvent(1, new Member("foo")));
    Assert.assertFalse(succeeded.get());
  }
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Related Classes of net.kuujo.copycat.cluster.Member

  • net.kuujo.copycat.event.EventHandlersTest
  • net.kuujo.copycat.functional.ConfigurationTest
  • net.kuujo.copycat.functional.LeaderElectionTest
  • net.kuujo.copycat.functional.SnapshotTest
  • net.kuujo.copycat.log.AbstractLogTest
  • net.kuujo.copycat.log.ChronicleLogTest
  • net.kuujo.copycat.log.EntryTest
  • net.kuujo.copycat.protocol.ProtocolReaderWriterTest
  • net.kuujo.copycat.test.TestNode
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