Examples with Histogram org.apache.flink.metrics.Histogram used on opensource projects

Example 16 with Histogram

use of org.apache.flink.metrics.Histogram in project flink by apache.

the class MetricQueryServiceTest method testCreateDump.

@Test
public void testCreateDump() throws Exception {
    MetricQueryService queryService = MetricQueryService.createMetricQueryService(rpcService, ResourceID.generate(), Long.MAX_VALUE);
    queryService.start();
    final Counter c = new SimpleCounter();
    final Gauge<String> g = () -> "Hello";
    final Histogram h = new TestHistogram();
    final Meter m = new TestMeter();
    final TaskManagerMetricGroup tm = UnregisteredMetricGroups.createUnregisteredTaskManagerMetricGroup();
    queryService.addMetric("counter", c, tm);
    queryService.addMetric("gauge", g, tm);
    queryService.addMetric("histogram", h, tm);
    queryService.addMetric("meter", m, tm);
    MetricDumpSerialization.MetricSerializationResult dump = queryService.queryMetrics(TIMEOUT).get();
    assertTrue(dump.serializedCounters.length > 0);
    assertTrue(dump.serializedGauges.length > 0);
    assertTrue(dump.serializedHistograms.length > 0);
    assertTrue(dump.serializedMeters.length > 0);
    queryService.removeMetric(c);
    queryService.removeMetric(g);
    queryService.removeMetric(h);
    queryService.removeMetric(m);
    MetricDumpSerialization.MetricSerializationResult emptyDump = queryService.queryMetrics(TIMEOUT).get();
    assertEquals(0, emptyDump.serializedCounters.length);
    assertEquals(0, emptyDump.serializedGauges.length);
    assertEquals(0, emptyDump.serializedHistograms.length);
    assertEquals(0, emptyDump.serializedMeters.length);
}

Example 17 with Histogram

use of org.apache.flink.metrics.Histogram in project flink by apache.

the class MetricGroupRegistrationTest method testMetricInstantiation.

/**
 * Verifies that group methods instantiate the correct metric with the given name.
 */
@Test
public void testMetricInstantiation() throws Exception {
    MetricRegistryImpl registry = new MetricRegistryImpl(MetricRegistryTestUtils.defaultMetricRegistryConfiguration(), Collections.singletonList(ReporterSetup.forReporter("test", new TestReporter1())));
    MetricGroup root = TaskManagerMetricGroup.createTaskManagerMetricGroup(registry, "host", new ResourceID("id"));
    Counter counter = root.counter("counter");
    assertEquals(counter, TestReporter1.lastPassedMetric);
    assertEquals("counter", TestReporter1.lastPassedName);
    Gauge<Object> gauge = root.gauge("gauge", new Gauge<Object>() {

        @Override
        public Object getValue() {
            return null;
        }
    });
    Assert.assertEquals(gauge, TestReporter1.lastPassedMetric);
    assertEquals("gauge", TestReporter1.lastPassedName);
    Histogram histogram = root.histogram("histogram", new Histogram() {

        @Override
        public void update(long value) {
        }

        @Override
        public long getCount() {
            return 0;
        }

        @Override
        public HistogramStatistics getStatistics() {
            return null;
        }
    });
    Assert.assertEquals(histogram, TestReporter1.lastPassedMetric);
    assertEquals("histogram", TestReporter1.lastPassedName);
    registry.shutdown().get();
}

Example 18 with Histogram

use of org.apache.flink.metrics.Histogram in project flink by apache.

the class MetricFetcherTest method createRequestDumpAnswer.

private static MetricDumpSerialization.MetricSerializationResult createRequestDumpAnswer(ResourceID tmRID, JobID jobID) {
    Map<Counter, Tuple2<QueryScopeInfo, String>> counters = new HashMap<>();
    Map<Gauge<?>, Tuple2<QueryScopeInfo, String>> gauges = new HashMap<>();
    Map<Histogram, Tuple2<QueryScopeInfo, String>> histograms = new HashMap<>();
    Map<Meter, Tuple2<QueryScopeInfo, String>> meters = new HashMap<>();
    SimpleCounter c1 = new SimpleCounter();
    SimpleCounter c2 = new SimpleCounter();
    c1.inc(1);
    c2.inc(2);
    counters.put(c1, new Tuple2<>(new QueryScopeInfo.OperatorQueryScopeInfo(jobID.toString(), "taskid", 2, "opname", "abc"), "oc"));
    counters.put(c2, new Tuple2<>(new QueryScopeInfo.TaskQueryScopeInfo(jobID.toString(), "taskid", 2, "abc"), "tc"));
    meters.put(new Meter() {

        @Override
        public void markEvent() {
        }

        @Override
        public void markEvent(long n) {
        }

        @Override
        public double getRate() {
            return 5;
        }

        @Override
        public long getCount() {
            return 10;
        }
    }, new Tuple2<>(new QueryScopeInfo.JobQueryScopeInfo(jobID.toString(), "abc"), "jc"));
    gauges.put(new Gauge<String>() {

        @Override
        public String getValue() {
            return "x";
        }
    }, new Tuple2<>(new QueryScopeInfo.TaskManagerQueryScopeInfo(tmRID.toString(), "abc"), "gauge"));
    histograms.put(new TestHistogram(), new Tuple2<>(new QueryScopeInfo.JobManagerQueryScopeInfo("abc"), "hist"));
    MetricDumpSerialization.MetricDumpSerializer serializer = new MetricDumpSerialization.MetricDumpSerializer();
    MetricDumpSerialization.MetricSerializationResult dump = serializer.serialize(counters, gauges, histograms, meters);
    serializer.close();
    return dump;
}

Example 19 with Histogram

use of org.apache.flink.metrics.Histogram in project flink by apache.

the class MetricListenerTest method testRegisterMetrics.

@Test
public void testRegisterMetrics() {
    MetricListener metricListener = new MetricListener();
    final MetricGroup metricGroup = metricListener.getMetricGroup();
    // Counter
    final Counter counter = metricGroup.counter(COUNTER_NAME);
    counter.inc(15213);
    final Optional<Counter> registeredCounter = metricListener.getCounter(COUNTER_NAME);
    assertTrue(registeredCounter.isPresent());
    assertEquals(15213L, registeredCounter.get().getCount());
    // Gauge
    metricGroup.gauge(GAUGE_NAME, () -> 15213);
    final Optional<Gauge<Integer>> registeredGauge = metricListener.getGauge(GAUGE_NAME);
    assertTrue(registeredGauge.isPresent());
    assertEquals(Integer.valueOf(15213), registeredGauge.get().getValue());
    // Meter
    metricGroup.meter(METER_NAME, new Meter() {

        @Override
        public void markEvent() {
        }

        @Override
        public void markEvent(long n) {
        }

        @Override
        public double getRate() {
            return 15213.0;
        }

        @Override
        public long getCount() {
            return 18213L;
        }
    });
    final Optional<Meter> registeredMeter = metricListener.getMeter(METER_NAME);
    assertTrue(registeredMeter.isPresent());
    assertEquals(15213.0, registeredMeter.get().getRate(), 0.1);
    assertEquals(18213L, registeredMeter.get().getCount());
    // Histogram
    metricGroup.histogram(HISTOGRAM_NAME, new Histogram() {

        @Override
        public void update(long value) {
        }

        @Override
        public long getCount() {
            return 15213L;
        }

        @Override
        public HistogramStatistics getStatistics() {
            return null;
        }
    });
    final Optional<Histogram> registeredHistogram = metricListener.getHistogram(HISTOGRAM_NAME);
    assertTrue(registeredHistogram.isPresent());
    assertEquals(15213L, registeredHistogram.get().getCount());
}