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

Example 41 with RaftPeerId

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

the class RaftBasicTests method runTestOldLeaderNotCommit.

void runTestOldLeaderNotCommit(CLUSTER cluster) throws Exception {
    final RaftPeerId leaderId = waitForLeader(cluster).getId();
    final List<RaftServer.Division> followers = cluster.getFollowers();
    final RaftServer.Division followerToCommit = followers.get(0);
    try {
        for (int i = 1; i < NUM_SERVERS - 1; i++) {
            cluster.killServer(followers.get(i).getId());
        }
    } catch (IndexOutOfBoundsException e) {
        throw new org.junit.AssumptionViolatedException("The assumption is follower.size() = NUM_SERVERS - 1, " + "actual NUM_SERVERS is " + NUM_SERVERS + ", and actual follower.size() is " + followers.size(), e);
    }
    SimpleMessage[] messages = SimpleMessage.create(1);
    RaftTestUtil.sendMessageInNewThread(cluster, leaderId, messages);
    Thread.sleep(cluster.getTimeoutMax().toLong(TimeUnit.MILLISECONDS) + 100);
    RaftTestUtil.logEntriesContains(followerToCommit.getRaftLog(), messages);
    cluster.killServer(leaderId);
    cluster.killServer(followerToCommit.getId());
    for (int i = 1; i < NUM_SERVERS - 1; i++) {
        cluster.restartServer(followers.get(i).getId(), false);
    }
    waitForLeader(cluster);
    Thread.sleep(cluster.getTimeoutMax().toLong(TimeUnit.MILLISECONDS) + 100);
    final Predicate<LogEntryProto> predicate = l -> l.getTerm() != 1;
    cluster.getServerAliveStream().map(RaftServer.Division::getRaftLog).forEach(log -> RaftTestUtil.checkLogEntries(log, messages, predicate));
}

Example 42 with RaftPeerId

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

the class RaftTestUtil method changeLeader.

static RaftPeerId changeLeader(MiniRaftCluster cluster, RaftPeerId oldLeader, Function<String, Exception> constructor) throws Exception {
    final String name = JavaUtils.getCallerStackTraceElement().getMethodName() + "-changeLeader";
    cluster.setBlockRequestsFrom(oldLeader.toString(), true);
    try {
        return JavaUtils.attemptRepeatedly(() -> {
            final RaftPeerId newLeader = waitForLeader(cluster).getId();
            if (newLeader.equals(oldLeader)) {
                throw constructor.apply("Failed to change leader: newLeader == oldLeader == " + oldLeader);
            }
            LOG.info("Changed leader from " + oldLeader + " to " + newLeader);
            return newLeader;
        }, 20, BaseTest.HUNDRED_MILLIS, name, LOG);
    } finally {
        cluster.setBlockRequestsFrom(oldLeader.toString(), false);
    }
}

Example 43 with RaftPeerId

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

the class RetryCacheTests method runTestRetryOnNewLeader.

void runTestRetryOnNewLeader(CLUSTER cluster) throws Exception {
    RaftTestUtil.waitForLeader(cluster);
    final RaftPeerId leaderId = cluster.getLeaderAndSendFirstMessage(false).getId();
    try (final RaftClient client = cluster.createClient(leaderId)) {
        RaftClientRpc rpc = client.getClientRpc();
        final long callId = 999;
        RaftClientRequest r = cluster.newRaftClientRequest(client.getId(), leaderId, callId, new SimpleMessage("message"));
        assertReply(rpc.sendRequest(r), client, callId);
        final long oldLastApplied = cluster.getLeader().getInfo().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);
        final RaftPeerId newLeaderId = JavaUtils.attemptRepeatedly(() -> {
            final RaftPeerId id = RaftTestUtil.waitForLeader(cluster).getId();
            Assert.assertNotEquals(leaderId, id);
            return id;
        }, 10, TimeDuration.valueOf(100, TimeUnit.MILLISECONDS), "wait for a leader different than " + leaderId, LOG);
        Assert.assertNotEquals(leaderId, newLeaderId);
        // same clientId and callId in the request
        r = cluster.newRaftClientRequest(client.getId(), newLeaderId, callId, new SimpleMessage("message"));
        rpc.addRaftPeers(Arrays.asList(change.newPeers));
        for (int i = 0; i < 10; i++) {
            try {
                assertReply(rpc.sendRequest(r), client, callId);
                LOG.info("successfully sent out the retry request_" + i);
            } catch (Exception e) {
                LOG.info("hit exception while retrying the same request: " + r, e);
            }
            Thread.sleep(100);
        }
        // check the new leader and make sure the retry did not get committed
        Assert.assertEquals(0, count(cluster.getLeader().getRaftLog(), oldLastApplied + 1));
    }
}

Example 44 with RaftPeerId

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

the class TestLeaderElectionMetrics method setUp.

@BeforeClass
public static void setUp() {
    RaftGroupId raftGroupId = RaftGroupId.randomId();
    RaftPeerId raftPeerId = RaftPeerId.valueOf("TestId");
    RaftGroupMemberId raftGroupMemberId = RaftGroupMemberId.valueOf(raftPeerId, raftGroupId);
    leaderElectionMetrics = LeaderElectionMetrics.getLeaderElectionMetrics(raftGroupMemberId, () -> 1000L);
    ratisMetricRegistry = leaderElectionMetrics.getRegistry();
}

Example 45 with RaftPeerId

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

the class LeaderElectionTests method testChangeLeader.

@Test
public void testChangeLeader() throws Exception {
    SegmentedRaftLogTestUtils.setRaftLogWorkerLogLevel(Level.TRACE);
    LOG.info("Running testChangeLeader");
    final MiniRaftCluster cluster = newCluster(3);
    cluster.start();
    RaftPeerId leader = RaftTestUtil.waitForLeader(cluster).getId();
    for (int i = 0; i < 10; i++) {
        leader = RaftTestUtil.changeLeader(cluster, leader, IllegalStateException::new);
        ExitUtils.assertNotTerminated();
    }
    SegmentedRaftLogTestUtils.setRaftLogWorkerLogLevel(Level.INFO);
    cluster.shutdown();
}