Examples with RaftPeerId org.apache.ratis.protocol.RaftPeerId used on opensource projects

Example 1 with RaftPeerId

use of org.apache.ratis.protocol.RaftPeerId in project incubator-ratis by apache.

the class PeerConfiguration method hasMajority.

boolean hasMajority(Collection<RaftPeerId> others, RaftPeerId selfId) {
    Preconditions.assertTrue(!others.contains(selfId));
    int num = 0;
    if (contains(selfId)) {
        num++;
    }
    for (RaftPeerId other : others) {
        if (contains(other)) {
            num++;
        }
        if (num > size() / 2) {
            return true;
        }
    }
    return false;
}

Example 2 with RaftPeerId

use of org.apache.ratis.protocol.RaftPeerId in project incubator-ratis by apache.

the class RaftBasicTests method testOldLeaderNotCommit.

@Test
public void testOldLeaderNotCommit() throws Exception {
    LOG.info("Running testOldLeaderNotCommit");
    final MiniRaftCluster cluster = getCluster();
    final RaftPeerId leaderId = waitForLeader(cluster).getId();
    List<RaftServerImpl> followers = cluster.getFollowers();
    final RaftServerImpl followerToCommit = followers.get(0);
    for (int i = 1; i < NUM_SERVERS - 1; i++) {
        RaftServerImpl follower = followers.get(i);
        cluster.killServer(follower.getId());
    }
    SimpleMessage[] messages = SimpleMessage.create(1);
    sendMessageInNewThread(cluster, messages);
    Thread.sleep(cluster.getMaxTimeout() + 100);
    logEntriesContains(followerToCommit.getState().getLog(), messages);
    cluster.killServer(leaderId);
    cluster.killServer(followerToCommit.getId());
    for (int i = 1; i < NUM_SERVERS - 1; i++) {
        RaftServerImpl follower = followers.get(i);
        cluster.restartServer(follower.getId(), false);
    }
    waitForLeader(cluster);
    Thread.sleep(cluster.getMaxTimeout() + 100);
    final Predicate<LogEntryProto> predicate = l -> l.getTerm() != 1;
    cluster.getServerAliveStream().map(s -> s.getState().getLog()).forEach(log -> RaftTestUtil.checkLogEntries(log, messages, predicate));
}

Example 3 with RaftPeerId

use of org.apache.ratis.protocol.RaftPeerId in project incubator-ratis by apache.

the class RaftBasicTests method testOldLeaderCommit.

@Test
public void testOldLeaderCommit() throws Exception {
    LOG.info("Running testOldLeaderCommit");
    final MiniRaftCluster cluster = getCluster();
    final RaftServerImpl leader = waitForLeader(cluster);
    final RaftPeerId leaderId = leader.getId();
    final long term = leader.getState().getCurrentTerm();
    List<RaftServerImpl> followers = cluster.getFollowers();
    final RaftServerImpl followerToSendLog = followers.get(0);
    for (int i = 1; i < NUM_SERVERS - 1; i++) {
        RaftServerImpl follower = followers.get(i);
        cluster.killServer(follower.getId());
    }
    SimpleMessage[] messages = SimpleMessage.create(1);
    RaftTestUtil.sendMessageInNewThread(cluster, messages);
    Thread.sleep(cluster.getMaxTimeout() + 100);
    RaftLog followerLog = followerToSendLog.getState().getLog();
    assertTrue(logEntriesContains(followerLog, messages));
    LOG.info(String.format("killing old leader: %s", leaderId.toString()));
    cluster.killServer(leaderId);
    for (int i = 1; i < 3; i++) {
        RaftServerImpl follower = followers.get(i);
        LOG.info(String.format("restarting follower: %s", follower.getId().toString()));
        cluster.restartServer(follower.getId(), false);
    }
    Thread.sleep(cluster.getMaxTimeout() * 5);
    // confirm the server with log is elected as new leader.
    final RaftPeerId newLeaderId = waitForLeader(cluster).getId();
    Assert.assertEquals(followerToSendLog.getId(), newLeaderId);
    cluster.getServerAliveStream().map(s -> s.getState().getLog()).forEach(log -> RaftTestUtil.assertLogEntries(log, false, term, messages));
    LOG.info("terminating testOldLeaderCommit test");
}

Example 4 with RaftPeerId

use of org.apache.ratis.protocol.RaftPeerId in project incubator-ratis by apache.

the class RaftTestUtil method sendMessageInNewThread.

static void sendMessageInNewThread(MiniRaftCluster cluster, SimpleMessage... messages) {
    RaftPeerId leaderId = cluster.getLeader().getId();
    new Thread(() -> {
        try (final RaftClient client = cluster.createClient(leaderId)) {
            for (SimpleMessage mssg : messages) {
                client.send(mssg);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }).start();
}

Example 5 with RaftPeerId

use of org.apache.ratis.protocol.RaftPeerId in project incubator-ratis by apache.

the class RetryCacheTests method testRetryOnNewLeader.

/**
 * Test retry while the leader changes to another peer
 */
@Test
public void testRetryOnNewLeader() throws Exception {
    final MiniRaftCluster cluster = getCluster();
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId leaderId = cluster.getLeaderAndSendFirstMessage().getId();
    final RaftClient client = cluster.createClient(leaderId);
    RaftClientRpc rpc = client.getClientRpc();
    final long callId = 999;
    final long seqNum = 111;
    RaftClientRequest r = cluster.newRaftClientRequest(client.getId(), leaderId, callId, seqNum, new SimpleMessage("message"));
    RaftClientReply reply = rpc.sendRequest(r);
    Assert.assertEquals(callId, reply.getCallId());
    Assert.assertTrue(reply.isSuccess());
    long oldLastApplied = cluster.getLeader().getState().getLastAppliedIndex();
    // trigger the reconfiguration, make sure the original leader is kicked out
    PeerChanges change = cluster.addNewPeers(2, true);
    RaftPeer[] allPeers = cluster.removePeers(2, true, asList(change.newPeers)).allPeersInNewConf;
    // trigger setConfiguration
    cluster.setConfiguration(allPeers);
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId newLeaderId = cluster.getLeader().getId();
    Assert.assertNotEquals(leaderId, newLeaderId);
    // same clientId and callId in the request
    r = cluster.newRaftClientRequest(client.getId(), newLeaderId, callId, seqNum, new SimpleMessage("message"));
    for (int i = 0; i < 10; i++) {
        try {
            reply = rpc.sendRequest(r);
            LOG.info("successfully sent out the retry request_" + i);
            Assert.assertEquals(client.getId(), reply.getClientId());
            Assert.assertEquals(callId, reply.getCallId());
            Assert.assertTrue(reply.isSuccess());
        } catch (Exception e) {
            LOG.info("hit exception while retrying the same request: " + e);
        }
        Thread.sleep(100);
    }
    // check the new leader and make sure the retry did not get committed
    Assert.assertEquals(oldLastApplied + 3, cluster.getLeader().getState().getLastAppliedIndex());
    client.close();
}