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

Example 11 with Histogram

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

the class Slf4jReporterTest method testAddHistogram.

@Test
void testAddHistogram() throws Exception {
    String histogramName = "histogram";
    Histogram histogram = new TestHistogram();
    reporter.notifyOfAddedMetric(histogram, histogramName, metricGroup);
    assertThat(reporter.getHistograms()).containsKey(histogram);
    String expectedHistogramName = reporter.filterCharacters(SCOPE) + delimiter + reporter.filterCharacters(histogramName);
    reporter.report();
    assertThat(testLoggerResource.getMessages()).anyMatch(logOutput -> logOutput.contains(expectedHistogramName));
}

Example 12 with Histogram

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

the class JMXReporter method notifyOfAddedMetric.

// ------------------------------------------------------------------------
// adding / removing metrics
// ------------------------------------------------------------------------
@Override
public void notifyOfAddedMetric(Metric metric, String metricName, MetricGroup group) {
    final String domain = generateJmxDomain(metricName, group);
    final Hashtable<String, String> table = generateJmxTable(group.getAllVariables());
    AbstractBean jmxMetric;
    ObjectName jmxName;
    try {
        jmxName = new ObjectName(domain, table);
    } catch (MalformedObjectNameException e) {
        /*
             * There is an implementation error on our side if this occurs. Either the domain was
             * modified and no longer conforms to the JMX domain rules or the table wasn't properly
             * generated.
             */
        LOG.debug("Implementation error. The domain or table does not conform to JMX rules.", e);
        return;
    }
    if (metric instanceof Gauge) {
        jmxMetric = new JmxGauge((Gauge<?>) metric);
    } else if (metric instanceof Counter) {
        jmxMetric = new JmxCounter((Counter) metric);
    } else if (metric instanceof Histogram) {
        jmxMetric = new JmxHistogram((Histogram) metric);
    } else if (metric instanceof Meter) {
        jmxMetric = new JmxMeter((Meter) metric);
    } else {
        LOG.error("Cannot add unknown metric type: {}. This indicates that the metric type " + "is not supported by this reporter.", metric.getClass().getName());
        return;
    }
    try {
        synchronized (this) {
            mBeanServer.registerMBean(jmxMetric, jmxName);
            registeredMetrics.put(metric, jmxName);
        }
    } catch (NotCompliantMBeanException e) {
        // implementation error on our side
        LOG.debug("Metric did not comply with JMX MBean rules.", e);
    } catch (InstanceAlreadyExistsException e) {
        LOG.warn("A metric with the name " + jmxName + " was already registered.", e);
    } catch (Throwable t) {
        LOG.warn("Failed to register metric", t);
    }
}

Example 13 with Histogram

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

the class InfluxdbReporter method buildReport.

@Nullable
private BatchPoints buildReport() {
    Instant timestamp = Instant.now();
    BatchPoints.Builder report = BatchPoints.database(database);
    report.retentionPolicy(retentionPolicy);
    report.consistency(consistency);
    try {
        for (Map.Entry<Gauge<?>, MeasurementInfo> entry : gauges.entrySet()) {
            report.point(MetricMapper.map(entry.getValue(), timestamp, entry.getKey()));
        }
        for (Map.Entry<Counter, MeasurementInfo> entry : counters.entrySet()) {
            report.point(MetricMapper.map(entry.getValue(), timestamp, entry.getKey()));
        }
        for (Map.Entry<Histogram, MeasurementInfo> entry : histograms.entrySet()) {
            report.point(MetricMapper.map(entry.getValue(), timestamp, entry.getKey()));
        }
        for (Map.Entry<Meter, MeasurementInfo> entry : meters.entrySet()) {
            report.point(MetricMapper.map(entry.getValue(), timestamp, entry.getKey()));
        }
    } catch (ConcurrentModificationException | NoSuchElementException e) {
        // report next time
        return null;
    }
    return report.build();
}

Example 14 with Histogram

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

the class PrometheusReporterTest method histogramIsReportedAsPrometheusSummary.

@Test
void histogramIsReportedAsPrometheusSummary() throws UnirestException {
    Histogram testHistogram = new TestHistogram();
    String histogramName = "testHistogram";
    String summaryName = SCOPE_PREFIX + histogramName;
    String response = addMetricAndPollResponse(testHistogram, histogramName);
    assertThat(response).contains(HELP_PREFIX + summaryName + " " + histogramName + " (scope: taskmanager)\n" + TYPE_PREFIX + summaryName + " summary" + "\n" + summaryName + "_count" + DEFAULT_LABELS + " 1.0" + "\n");
    for (String quantile : Arrays.asList("0.5", "0.75", "0.95", "0.98", "0.99", "0.999")) {
        assertThat(response).contains(summaryName + "{" + DIMENSIONS + ",quantile=\"" + quantile + "\",} " + quantile + "\n");
    }
}

Example 15 with Histogram

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

the class DatadogHttpReporter method notifyOfAddedMetric.

@Override
public void notifyOfAddedMetric(Metric metric, String metricName, MetricGroup group) {
    final String name = group.getMetricIdentifier(metricName);
    List<String> tags = new ArrayList<>(configTags);
    tags.addAll(getTagsFromMetricGroup(group));
    String host = getHostFromMetricGroup(group);
    if (metric instanceof Counter) {
        Counter c = (Counter) metric;
        counters.put(c, new DCounter(c, name, host, tags, clock));
    } else if (metric instanceof Gauge) {
        Gauge g = (Gauge) metric;
        gauges.put(g, new DGauge(g, name, host, tags, clock));
    } else if (metric instanceof Meter) {
        Meter m = (Meter) metric;
        // Only consider rate
        meters.put(m, new DMeter(m, name, host, tags, clock));
    } else if (metric instanceof Histogram) {
        Histogram h = (Histogram) metric;
        histograms.put(h, new DHistogram(h, name, host, tags, clock));
    } else {
        LOGGER.warn("Cannot add unknown metric type {}. This indicates that the reporter " + "does not support this metric type.", metric.getClass().getName());
    }
}