Examples with Gauge org.apache.kafka.common.metrics.Gauge used on opensource projects

Example 1 with Gauge

use of org.apache.kafka.common.metrics.Gauge in project kafka by apache.

the class ThreadMetricsTest method shouldAddTotalBlockedTimeMetric.

@Test
public void shouldAddTotalBlockedTimeMetric() {
    // Given:
    final double startTime = 123.45;
    final StreamThreadTotalBlockedTime blockedTime = mock(StreamThreadTotalBlockedTime.class);
    when(blockedTime.compute()).thenReturn(startTime);
    // When:
    ThreadMetrics.addThreadBlockedTimeMetric("burger", blockedTime, streamsMetrics);
    // Then:
    final ArgumentCaptor<Gauge<Double>> captor = gaugeCaptor();
    verify(streamsMetrics).addThreadLevelMutableMetric(eq("blocked-time-ns-total"), eq("The total time the thread spent blocked on kafka in nanoseconds"), eq("burger"), captor.capture());
    assertThat(captor.getValue().value(null, 678L), is(startTime));
}

Example 2 with Gauge

use of org.apache.kafka.common.metrics.Gauge in project kafka by apache.

the class StreamsMetricsImpl method addThreadLevelMutableMetric.

public <T> void addThreadLevelMutableMetric(final String name, final String description, final String threadId, final Gauge<T> valueProvider) {
    final MetricName metricName = metrics.metricName(name, THREAD_LEVEL_GROUP, description, threadLevelTagMap(threadId));
    synchronized (threadLevelMetrics) {
        threadLevelMetrics.computeIfAbsent(threadSensorPrefix(threadId), tid -> new LinkedList<>()).add(metricName);
        metrics.addMetric(metricName, valueProvider);
    }
}

Example 3 with Gauge

use of org.apache.kafka.common.metrics.Gauge in project kafka by apache.

the class StreamsMetricsImpl method addStoreLevelMutableMetric.

public <T> void addStoreLevelMutableMetric(final String taskId, final String metricsScope, final String storeName, final String name, final String description, final RecordingLevel recordingLevel, final Gauge<T> valueProvider) {
    final MetricName metricName = metrics.metricName(name, STATE_STORE_LEVEL_GROUP, description, storeLevelTagMap(taskId, metricsScope, storeName));
    if (metrics.metric(metricName) == null) {
        final MetricConfig metricConfig = new MetricConfig().recordLevel(recordingLevel);
        final String key = storeSensorPrefix(Thread.currentThread().getName(), taskId, storeName);
        metrics.addMetric(metricName, metricConfig, valueProvider);
        storeLevelMetrics.computeIfAbsent(key, ignored -> new LinkedList<>()).push(metricName);
    }
}

Example 4 with Gauge

use of org.apache.kafka.common.metrics.Gauge in project kafka by apache.

the class StreamsMetricsImplTest method shouldAddClientLevelMutableMetric.

@Test
public void shouldAddClientLevelMutableMetric() {
    final Metrics metrics = mock(Metrics.class);
    final RecordingLevel recordingLevel = RecordingLevel.INFO;
    final MetricConfig metricConfig = new MetricConfig().recordLevel(recordingLevel);
    final Gauge<String> valueProvider = (config, now) -> "mutable-value";
    expect(metrics.metricName(METRIC_NAME1, CLIENT_LEVEL_GROUP, DESCRIPTION1, clientLevelTags)).andReturn(metricName1);
    metrics.addMetric(EasyMock.eq(metricName1), eqMetricConfig(metricConfig), eq(valueProvider));
    replay(metrics);
    final StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(metrics, CLIENT_ID, VERSION, time);
    streamsMetrics.addClientLevelMutableMetric(METRIC_NAME1, DESCRIPTION1, recordingLevel, valueProvider);
    verify(metrics);
}