Examples with MetricFamilySamples io.prometheus.client.Collector.MetricFamilySamples used on opensource projects

Example 1 with MetricFamilySamples

use of io.prometheus.client.Collector.MetricFamilySamples in project bookkeeper by apache.

the class PrometheusTextFormatUtil method writeMetricsCollectedByPrometheusClient.

static void writeMetricsCollectedByPrometheusClient(Writer w, CollectorRegistry registry) throws IOException {
    Enumeration<MetricFamilySamples> metricFamilySamples = registry.metricFamilySamples();
    while (metricFamilySamples.hasMoreElements()) {
        MetricFamilySamples metricFamily = metricFamilySamples.nextElement();
        for (int i = 0; i < metricFamily.samples.size(); i++) {
            Sample sample = metricFamily.samples.get(i);
            w.write(sample.name);
            w.write('{');
            for (int j = 0; j < sample.labelNames.size(); j++) {
                if (j != 0) {
                    w.write(", ");
                }
                w.write(sample.labelNames.get(j));
                w.write("=\"");
                w.write(sample.labelValues.get(j));
                w.write('"');
            }
            w.write("} ");
            w.write(Collector.doubleToGoString(sample.value));
            w.write('\n');
        }
    }
}

Example 2 with MetricFamilySamples

use of io.prometheus.client.Collector.MetricFamilySamples in project incubator-pulsar by apache.

the class PrometheusMetricsGenerator method generateSystemMetrics.

private static void generateSystemMetrics(SimpleTextOutputStream stream, String cluster) {
    Enumeration<MetricFamilySamples> metricFamilySamples = CollectorRegistry.defaultRegistry.metricFamilySamples();
    while (metricFamilySamples.hasMoreElements()) {
        MetricFamilySamples metricFamily = metricFamilySamples.nextElement();
        for (int i = 0; i < metricFamily.samples.size(); i++) {
            Sample sample = metricFamily.samples.get(i);
            stream.write(sample.name);
            stream.write("{cluster=\"").write(cluster).write('"');
            for (int j = 0; j < sample.labelNames.size(); j++) {
                stream.write(", ");
                stream.write(sample.labelNames.get(j));
                stream.write("=\"");
                stream.write(sample.labelValues.get(j));
                stream.write('"');
            }
            stream.write("} ");
            stream.write(Collector.doubleToGoString(sample.value));
            stream.write('\n');
        }
    }
}

Example 3 with MetricFamilySamples

use of io.prometheus.client.Collector.MetricFamilySamples in project promregator by promregator.

the class MetricsEndpointTest method testGetMetrics.

@Test
public void testGetMetrics() {
    Assert.assertNotNull(subject);
    String response = subject.getMetrics();
    Assert.assertNotNull(response);
    Assert.assertNotEquals("", response);
    TextFormat004Parser parser = new TextFormat004Parser(response);
    HashMap<String, MetricFamilySamples> mapMFS = parser.parse();
    Assert.assertNotNull(mapMFS.get("metric_unittestapp"));
    Assert.assertNotNull(mapMFS.get("metric_unittestapp2"));
}

Example 4 with MetricFamilySamples

use of io.prometheus.client.Collector.MetricFamilySamples in project promregator by promregator.

the class TextFormat004ParserTest method compareEMFS.

public static void compareEMFS(Enumeration<MetricFamilySamples> expected, Enumeration<MetricFamilySamples> actual) {
    HashMap<String, MetricFamilySamples> expectedMap = MFSUtils.convertToEMFSToHashMap(expected);
    HashMap<String, MetricFamilySamples> actualMap = MFSUtils.convertToEMFSToHashMap(actual);
    Assert.assertTrue(EqualsBuilder.reflectionEquals(actualMap.keySet(), expectedMap.keySet(), false));
    for (String metricName : expectedMap.keySet()) {
        MetricFamilySamples actualMFS = actualMap.get(metricName);
        MetricFamilySamples expectedMFS = expectedMap.get(metricName);
        Assert.assertTrue(EqualsBuilder.reflectionEquals(actualMFS, expectedMFS));
    }
}

Example 5 with MetricFamilySamples

use of io.prometheus.client.Collector.MetricFamilySamples in project promregator by promregator.

the class TextFormat004ParserTest method testSimpleNaN.

@Test
public void testSimpleNaN() {
    String textToParse = "# Minimalistic line:\n" + "\n" + "metric_without_labels NaN 123456789012345600\n";
    TextFormat004Parser subject = new TextFormat004Parser(textToParse);
    HashMap<String, Collector.MetricFamilySamples> resultMap = subject.parse();
    Enumeration<Collector.MetricFamilySamples> result = Collections.enumeration(resultMap.values());
    // compareEMFS does not properly work with NaN values
    // Thus, we have to check this explicitly here
    MetricFamilySamples mfs = result.nextElement();
    Assert.assertFalse(result.hasMoreElements());
    Assert.assertEquals("metric_without_labels", mfs.name);
    Assert.assertEquals(1, mfs.samples.size());
    Sample actualSample = mfs.samples.get(0);
    Assert.assertEquals("metric_without_labels", actualSample.name);
    Assert.assertTrue(Double.isNaN(actualSample.value));
}