Examples with Node com.alipay.sofa.jraft.Node used on opensource projects

Example 26 with Node

use of com.alipay.sofa.jraft.Node in project sofa-jraft by sofastack.

the class NodeTest method testChangePeersStepsDownInJointConsensus.

@Test
public void testChangePeersStepsDownInJointConsensus() throws Exception {
    final List<PeerId> peers = new ArrayList<>();
    final PeerId peer0 = JRaftUtils.getPeerId("127.0.0.1:5006");
    final PeerId peer1 = JRaftUtils.getPeerId("127.0.0.1:5007");
    final PeerId peer2 = JRaftUtils.getPeerId("127.0.0.1:5008");
    final PeerId peer3 = JRaftUtils.getPeerId("127.0.0.1:5009");
    // start single cluster
    peers.add(peer0);
    final TestCluster cluster = new TestCluster("testChangePeersStepsDownInJointConsensus", this.dataPath, peers);
    assertTrue(cluster.start(peer0.getEndpoint()));
    cluster.waitLeader();
    Node leader = cluster.getLeader();
    assertNotNull(leader);
    this.sendTestTaskAndWait(leader);
    // start peer1-3
    assertTrue(cluster.start(peer1.getEndpoint()));
    assertTrue(cluster.start(peer2.getEndpoint()));
    assertTrue(cluster.start(peer3.getEndpoint()));
    final Configuration conf = new Configuration();
    conf.addPeer(peer0);
    conf.addPeer(peer1);
    conf.addPeer(peer2);
    conf.addPeer(peer3);
    // change peers
    final SynchronizedClosure done = new SynchronizedClosure();
    leader.changePeers(conf, done);
    assertTrue(done.await().isOk());
    // stop peer3
    assertTrue(cluster.stop(peer3.getEndpoint()));
    conf.removePeer(peer0);
    conf.removePeer(peer1);
    // Change peers to [peer2, peer3], which must fail since peer3 is stopped
    done.reset();
    leader.changePeers(conf, done);
    Assert.assertEquals(RaftError.EPERM, done.await().getRaftError());
    LOG.info(done.getStatus().toString());
    assertFalse(((NodeImpl) leader).getConf().isStable());
    leader = cluster.getLeader();
    assertNull(leader);
    assertTrue(cluster.start(peer3.getEndpoint()));
    Thread.sleep(1000);
    cluster.waitLeader();
    leader = cluster.getLeader();
    final List<PeerId> thePeers = leader.listPeers();
    assertTrue(thePeers.size() > 0);
    assertEquals(conf.getPeerSet(), new HashSet<>(thePeers));
    cluster.stopAll();
}

Example 27 with Node

use of com.alipay.sofa.jraft.Node in project sofa-jraft by sofastack.

the class NodeTest method testLeaderTransferWithReplicatorStateListener.

@Test
public void testLeaderTransferWithReplicatorStateListener() throws Exception {
    final List<PeerId> peers = TestUtils.generatePeers(3);
    final TestCluster cluster = new TestCluster("unitest", this.dataPath, peers, 300);
    for (final PeerId peer : peers) {
        assertTrue(cluster.start(peer.getEndpoint()));
    }
    cluster.waitLeader();
    final UserReplicatorStateListener listener = new UserReplicatorStateListener();
    for (Node node : cluster.getNodes()) {
        node.addReplicatorStateListener(listener);
    }
    Node leader = cluster.getLeader();
    this.sendTestTaskAndWait(leader);
    Thread.sleep(100);
    final List<Node> followers = cluster.getFollowers();
    final PeerId targetPeer = followers.get(0).getNodeId().getPeerId().copy();
    LOG.info("Transfer leadership from {} to {}", leader, targetPeer);
    assertTrue(leader.transferLeadershipTo(targetPeer).isOk());
    Thread.sleep(1000);
    cluster.waitLeader();
    assertEquals(2, this.startedCounter.get());
    for (Node node : cluster.getNodes()) {
        node.clearReplicatorStateListeners();
    }
    assertEquals(0, cluster.getLeader().getReplicatorStatueListeners().size());
    assertEquals(0, cluster.getFollowers().get(0).getReplicatorStatueListeners().size());
    assertEquals(0, cluster.getFollowers().get(1).getReplicatorStatueListeners().size());
    cluster.stopAll();
}

Example 28 with Node

use of com.alipay.sofa.jraft.Node in project sofa-jraft by sofastack.

the class NodeTest method testLeaderShouldNotChange.

@Test
public void testLeaderShouldNotChange() throws Exception {
    final List<PeerId> peers = TestUtils.generatePeers(3);
    final TestCluster cluster = new TestCluster("unitest", this.dataPath, peers);
    for (final PeerId peer : peers) {
        assertTrue(cluster.start(peer.getEndpoint()));
    }
    cluster.waitLeader();
    // get leader
    final Node leader0 = cluster.getLeader();
    assertNotNull(leader0);
    final long savedTerm = ((NodeImpl) leader0).getCurrentTerm();
    LOG.info("Current leader is {}, term is {}", leader0, savedTerm);
    Thread.sleep(5000);
    cluster.waitLeader();
    final Node leader1 = cluster.getLeader();
    assertNotNull(leader1);
    LOG.info("Current leader is {}", leader1);
    assertEquals(savedTerm, ((NodeImpl) leader1).getCurrentTerm());
    cluster.stopAll();
}

Example 29 with Node

use of com.alipay.sofa.jraft.Node in project sofa-jraft by sofastack.

the class NodeTest method testLeaderStopAndReElectWithPriority.

@Test
public void testLeaderStopAndReElectWithPriority() throws Exception {
    final List<Integer> priorities = new ArrayList<>();
    priorities.add(100);
    priorities.add(60);
    priorities.add(10);
    final List<PeerId> peers = TestUtils.generatePriorityPeers(3, priorities);
    final TestCluster cluster = new TestCluster("unittest", this.dataPath, peers);
    for (final PeerId peer : peers) {
        assertTrue(cluster.start(peer.getEndpoint(), peer.getPriority()));
    }
    cluster.waitLeader();
    Node leader = cluster.getLeader();
    assertNotNull(leader);
    assertEquals(100, leader.getNodeId().getPeerId().getPriority());
    assertEquals(100, leader.getNodeTargetPriority());
    // apply tasks to leader
    sendTestTaskAndWait(leader);
    // stop leader
    assertTrue(cluster.stop(leader.getNodeId().getPeerId().getEndpoint()));
    // elect new leader
    cluster.waitLeader();
    leader = cluster.getLeader();
    assertNotNull(leader);
    // get current leader priority value
    int leaderPriority = leader.getNodeId().getPeerId().getPriority();
    // get current leader log size
    int peer1LogSize = cluster.getFsmByPeer(peers.get(1)).getLogs().size();
    int peer2LogSize = cluster.getFsmByPeer(peers.get(2)).getLogs().size();
    // if the leader is lower priority value
    if (leaderPriority == 10) {
        // we just compare the two peers' log size value;
        assertTrue(peer2LogSize > peer1LogSize);
    } else {
        assertEquals(60, leader.getNodeId().getPeerId().getPriority());
        assertEquals(100, leader.getNodeTargetPriority());
    }
    cluster.stopAll();
}

Example 30 with Node

use of com.alipay.sofa.jraft.Node in project sofa-jraft by sofastack.

the class NodeTest method testNoLeader.

@Test
public void testNoLeader() throws Exception {
    final List<PeerId> peers = TestUtils.generatePeers(3);
    final TestCluster cluster = new TestCluster("unittest", this.dataPath, peers);
    assertTrue(cluster.start(peers.get(0).getEndpoint()));
    final List<Node> followers = cluster.getFollowers();
    assertEquals(1, followers.size());
    final Node follower = followers.get(0);
    sendTestTaskAndWait(follower, 0, RaftError.EPERM);
    // adds a peer3
    final PeerId peer3 = new PeerId(TestUtils.getMyIp(), TestUtils.INIT_PORT + 3);
    CountDownLatch latch = new CountDownLatch(1);
    follower.addPeer(peer3, new ExpectClosure(RaftError.EPERM, latch));
    waitLatch(latch);
    // remove the peer0
    final PeerId peer0 = new PeerId(TestUtils.getMyIp(), TestUtils.INIT_PORT);
    latch = new CountDownLatch(1);
    follower.removePeer(peer0, new ExpectClosure(RaftError.EPERM, latch));
    waitLatch(latch);
    cluster.stopAll();
}