Examples of org.apache.hadoop.metrics2.lib.MetricsRegistry

org.apache.hadoop.metrics2.MetricsSystem
An optional metrics registry class for creating and maintaining a collection of MetricsMutables, making writing metrics source easier.


  @Override
  public void getMetrics(MetricsCollector metricsCollector, boolean all) {
    metricsRegistry.snapshot(metricsCollector.addRecord(metricsRegistry.info()), all);


    MetricsRecordBuilder mrb = metricsCollector.addRecord(metricsName)
        .setContext(metricsContext);


    if (wrapper != null) {
      mrb.addGauge(Interns.info(QUEUE_SIZE_NAME, QUEUE_SIZE_DESC), wrapper.getTotalQueueSize())
          .addGauge(Interns.info(GENERAL_QUEUE_NAME, GENERAL_QUEUE_DESC),
              wrapper.getGeneralQueueLength())
          .addGauge(Interns.info(REPLICATION_QUEUE_NAME,
              REPLICATION_QUEUE_DESC), wrapper.getReplicationQueueLength())
          .addGauge(Interns.info(PRIORITY_QUEUE_NAME, PRIORITY_QUEUE_DESC),

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  }


  @Override
  public void getMetrics(MetricsCollector metricsCollector, boolean all) {


    MetricsRecordBuilder metricsRecordBuilder = metricsCollector.addRecord(metricsName)
        .setContext(metricsContext);


    // masterWrapper can be null because this function is called inside of init.
    if (masterWrapper != null) {
      metricsRecordBuilder
          .addGauge(Interns.info(MASTER_ACTIVE_TIME_NAME,
              MASTER_ACTIVE_TIME_DESC), masterWrapper.getActiveTime())
          .addGauge(Interns.info(MASTER_START_TIME_NAME,
              MASTER_START_TIME_DESC), masterWrapper.getStartTime())
          .addGauge(Interns.info(AVERAGE_LOAD_NAME, AVERAGE_LOAD_DESC),

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   * @param metricsBuilder Builder to accept metrics
   * @param all push all or only changed?
   */
  @Override
  public void getMetrics(MetricsBuilder metricsBuilder, boolean all) {
    MetricsRecordBuilder mrb = metricsBuilder.addRecord(metricsName)
        .setContext(metricsContext);
    metricsRegistry.snapshot(mrb, all);
  }

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   * @param all push all or only changed?
   */
  @Override
  public void getMetrics(MetricsBuilder metricsBuilder, boolean all) {


    MetricsRecordBuilder metricsRecordBuilder = metricsBuilder.addRecord(
        metricsName).setContext(metricsContext);


    // masterWrapper can be null because this function is called inside of init.
    if (masterWrapper != null) {
      metricsRecordBuilder
          .addGauge(MASTER_ACTIVE_TIME_NAME, MASTER_ACTIVE_TIME_DESC,
              masterWrapper.getActiveTime())
          .addGauge(MASTER_START_TIME_NAME, MASTER_START_TIME_DESC,
              masterWrapper.getStartTime())
          .addGauge(AVERAGE_LOAD_NAME, AVERAGE_LOAD_DESC,

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    s1.c1.incr();
    s1.xxx.incr();
    s1.g1.set(2);
    s1.yyy.incr(2);
    s1.s1.add(0);
    MetricsSink sink1 = mock(MetricsSink.class);
    MetricsSink sink2 = mock(MetricsSink.class);
    ms.registerSink("sink1", "sink1 desc", sink1);
    ms.registerSink("sink2", "sink2 desc", sink2);
    ms.publishMetricsNow(); // publish the metrics
    ms.stop();
    ms.shutdown();

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    s1.c1.incr();
    s1.xxx.incr();
    s1.g1.set(2);
    s1.yyy.incr(2);
    s1.s1.add(0);
    MetricsSink sink1 = mock(MetricsSink.class);
    MetricsSink sink2 = mock(MetricsSink.class);
    ms.registerSink("sink1", "sink1 desc", sink1);
    ms.registerSink("sink2", "sink2 desc", sink2);
    ms.publishMetricsNow(); // publish the metrics


    try {

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  @Test public void testRegisterDups() {
    MetricsSystem ms = new MetricsSystemImpl();
    TestSource ts1 = new TestSource("ts1");
    TestSource ts2 = new TestSource("ts2");
    ms.register("ts1", "", ts1);
    MetricsSource s1 = ms.getSource("ts1");
    assertNotNull(s1);
    // should work when metrics system is not started
    ms.register("ts1", "", ts2);
    MetricsSource s2 = ms.getSource("ts1");
    assertNotNull(s2);
    assertNotSame(s1, s2);
    ms.shutdown();
  }

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  }


  @Override public synchronized <T>
  T register(String name, String desc, T source) {
    MetricsSourceBuilder sb = MetricsAnnotations.newSourceBuilder(source);
    final MetricsSource s = sb.build();
    MetricsInfo si = sb.info();
    String name2 = name == null ? si.name() : name;
    final String finalDesc = desc == null ? si.description() : desc;
    final String finalName = // be friendly to non-metrics tests
        DefaultMetricsSystem.sourceName(name2, !monitoring);

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  private void getMetrics(BaseSource source) {
    reset();
    if (!(source instanceof MetricsSource)) {
      assertTrue("The Source passed must be a MetricsSource", false);
    }
    MetricsSource impl = (MetricsSource) source;


    impl.getMetrics(new MockMetricsBuilder(), true);


  }

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    public void flush() {
    }
  }


  @Test public void testRegisterDups() {
    MetricsSystem ms = new MetricsSystemImpl();
    TestSource ts1 = new TestSource("ts1");
    TestSource ts2 = new TestSource("ts2");
    ms.register("ts1", "", ts1);
    MetricsSource s1 = ms.getSource("ts1");
    assertNotNull(s1);
    // should work when metrics system is not started
    ms.register("ts1", "", ts2);
    MetricsSource s2 = ms.getSource("ts1");
    assertNotNull(s2);
    assertNotSame(s1, s2);
    ms.shutdown();
  }

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