Examples with RatisMetricRegistry org.apache.ratis.metrics.RatisMetricRegistry used on opensource projects

Example 1 with RatisMetricRegistry

use of org.apache.ratis.metrics.RatisMetricRegistry in project incubator-ratis by apache.

the class MetricRegistriesImpl method create.

@Override
public RatisMetricRegistry create(MetricRegistryInfo info) {
    return registries.put(info, () -> {
        if (reporterRegistrations.isEmpty()) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("First MetricRegistry has been created without registering reporters. " + "Hence registering JMX reporter by default.");
            }
            enableJmxReporter();
        }
        RatisMetricRegistry registry = factory.create(info);
        reporterRegistrations.forEach(reg -> reg.accept(registry));
        return registry;
    });
}

Example 2 with RatisMetricRegistry

use of org.apache.ratis.metrics.RatisMetricRegistry in project incubator-ratis by apache.

the class TestRaftServerSlownessDetection method testSlownessDetection.

@Test
public void testSlownessDetection() throws Exception {
    RaftServer.Division leaderServer = RaftTestUtil.waitForLeader(cluster);
    long slownessTimeout = RaftServerConfigKeys.Rpc.slownessTimeout(cluster.getProperties()).toIntExact(TimeUnit.MILLISECONDS);
    RaftServer.Division failedFollower = cluster.getFollowers().get(0);
    final RatisMetricRegistry ratisMetricRegistry = ((RaftServerMetricsImpl) leaderServer.getRaftServerMetrics()).getRegistry();
    SortedMap<String, Gauge> heartbeatElapsedTimeGauges = ratisMetricRegistry.getGauges((s, metric) -> s.contains("lastHeartbeatElapsedTime"));
    String followerId = failedFollower.getId().toString();
    Gauge metric = heartbeatElapsedTimeGauges.entrySet().parallelStream().filter(e -> e.getKey().contains(followerId)).iterator().next().getValue();
    long followerHeartBeatElapsedMetric = (long) metric.getValue();
    // fail the node and wait for the callback to be triggered
    cluster.killServer(failedFollower.getId());
    Thread.sleep(slownessTimeout * 2);
    long followerHeartBeatElapsedMetricNew = (long) metric.getValue();
    Assert.assertTrue(followerHeartBeatElapsedMetricNew > followerHeartBeatElapsedMetric);
    // Followers should not get any failed not notification
    for (RaftServer.Division followerServer : cluster.getFollowers()) {
        Assert.assertNull(SimpleStateMachine4Testing.get(followerServer).getSlownessInfo());
    }
    // the leader should get notification that the follower has failed now
    RaftProtos.RoleInfoProto roleInfoProto = SimpleStateMachine4Testing.get(cluster.getLeader()).getSlownessInfo();
    Assert.assertNotNull(roleInfoProto);
    List<RaftProtos.ServerRpcProto> followers = roleInfoProto.getLeaderInfo().getFollowerInfoList();
    // Assert that the node shutdown is lagging behind
    for (RaftProtos.ServerRpcProto serverProto : followers) {
        if (RaftPeerId.valueOf(serverProto.getId().getId()).equals(failedFollower.getId())) {
            Assert.assertTrue(serverProto.getLastRpcElapsedTimeMs() > slownessTimeout);
        }
    }
}

Example 3 with RatisMetricRegistry

use of org.apache.ratis.metrics.RatisMetricRegistry in project incubator-ratis by apache.

the class TestGrpcMessageMetrics method assertMessageCount.

static void assertMessageCount(RaftServer.Division server) {
    String serverId = server.getId().toString();
    GrpcService service = (GrpcService) RaftServerTestUtil.getServerRpc(server);
    RatisMetricRegistry registry = service.getServerInterceptor().getMetrics().getRegistry();
    String counter_prefix = serverId + "_" + "ratis.grpc.RaftServerProtocolService";
    Assert.assertTrue(registry.counter(counter_prefix + "_" + "requestVote" + "_OK_completed_total").getCount() > 0);
}

Example 4 with RatisMetricRegistry

use of org.apache.ratis.metrics.RatisMetricRegistry in project incubator-ratis by apache.

the class TestSegmentedRaftLog method testLoadLogSegments.

@Test
public void testLoadLogSegments() throws Exception {
    // first generate log files
    List<SegmentRange> ranges = prepareRanges(0, 5, 100, 0);
    LogEntryProto[] entries = prepareLog(ranges);
    // create RaftLog object and load log file
    try (SegmentedRaftLog raftLog = newSegmentedRaftLog()) {
        raftLog.open(RaftLog.INVALID_LOG_INDEX, null);
        // check if log entries are loaded correctly
        for (LogEntryProto e : entries) {
            LogEntryProto entry = raftLog.get(e.getIndex());
            Assert.assertEquals(e, entry);
        }
        final LogEntryHeader[] termIndices = raftLog.getEntries(0, 500);
        LogEntryProto[] entriesFromLog = Arrays.stream(termIndices).map(ti -> {
            try {
                return raftLog.get(ti.getIndex());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }).toArray(LogEntryProto[]::new);
        Assert.assertArrayEquals(entries, entriesFromLog);
        Assert.assertEquals(entries[entries.length - 1], getLastEntry(raftLog));
        final RatisMetricRegistry metricRegistryForLogWorker = RaftLogMetricsBase.getLogWorkerMetricRegistry(memberId);
        Timer raftLogSegmentLoadLatencyTimer = metricRegistryForLogWorker.timer("segmentLoadLatency");
        assertTrue(raftLogSegmentLoadLatencyTimer.getMeanRate() > 0);
        Timer raftLogReadLatencyTimer = metricRegistryForLogWorker.timer("readEntryLatency");
        assertTrue(raftLogReadLatencyTimer.getMeanRate() > 0);
    }
}

Example 5 with RatisMetricRegistry

use of org.apache.ratis.metrics.RatisMetricRegistry in project incubator-ratis by apache.

the class LogAppenderTests method testFollowerHeartbeatMetric.

@Test
public void testFollowerHeartbeatMetric() throws IOException, InterruptedException {
    // Start a 3 node Ratis ring.
    final MiniRaftCluster cluster = newCluster(3);
    cluster.start();
    final RaftServer.Division leaderServer = waitForLeader(cluster);
    // Write 10 messages to leader.
    try (RaftClient client = cluster.createClient(leaderServer.getId())) {
        for (int i = 1; i <= 10; i++) {
            client.io().send(new RaftTestUtil.SimpleMessage("Msg to make leader ready " + i));
        }
    } catch (IOException e) {
        throw e;
    }
    final RatisMetricRegistry ratisMetricRegistry = ((RaftServerMetricsImpl) leaderServer.getRaftServerMetrics()).getRegistry();
    // Get all last_heartbeat_elapsed_time metric gauges. Should be equal to number of followers.
    SortedMap<String, Gauge> heartbeatElapsedTimeGauges = ratisMetricRegistry.getGauges((s, metric) -> s.contains("lastHeartbeatElapsedTime"));
    assertTrue(heartbeatElapsedTimeGauges.size() == 2);
    for (RaftServer.Division followerServer : cluster.getFollowers()) {
        String followerId = followerServer.getId().toString();
        Gauge metric = heartbeatElapsedTimeGauges.entrySet().parallelStream().filter(e -> e.getKey().contains(followerId)).iterator().next().getValue();
        // Metric for this follower exists.
        assertTrue(metric != null);
        // Metric in nanos > 0.
        assertTrue((long) metric.getValue() > 0);
        // Try to get Heartbeat metrics for follower.
        final RaftServerMetricsImpl followerMetrics = (RaftServerMetricsImpl) followerServer.getRaftServerMetrics();
        // Metric should not exist. It only exists in leader.
        assertTrue(followerMetrics.getRegistry().getGauges((s, m) -> s.contains("lastHeartbeatElapsedTime")).isEmpty());
        for (boolean heartbeat : new boolean[] { true, false }) {
            assertTrue(followerMetrics.getFollowerAppendEntryTimer(heartbeat).getMeanRate() > 0.0d);
            assertTrue(followerMetrics.getFollowerAppendEntryTimer(heartbeat).getCount() > 0L);
        }
    }
}