Package org.apache.hadoop.metrics2.util

Examples of org.apache.hadoop.metrics2.util.Servers

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  public void testFileSink() throws IOException {
    outFile = getTestTempFile("test-file-sink-", ".out");
    final String outPath = outFile.getAbsolutePath(); 
   
    // NB: specify large period to avoid multiple metrics snapshotting:
    new ConfigBuilder().add("*.period", 10000)
        .add("test.sink.mysink0.class", FileSink.class.getName())
        .add("test.sink.mysink0.filename", outPath)
        // NB: we filter by context to exclude "metricssystem" context metrics:
        .add("test.sink.mysink0.context", "test1")
        .save(TestMetricsConfig.getTestFilename("hadoop-metrics2-test"));
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  }

  synchronized
  void registerSource(String name, String desc, MetricsSource source) {
    checkNotNull(config, "config");
    MetricsConfig conf = sourceConfigs.get(name);
    MetricsSourceAdapter sa = conf != null
        ? new MetricsSourceAdapter(prefix, name, desc, source,
                                   injectedTags, period, conf)
        : new MetricsSourceAdapter(prefix, name, desc, source,
          injectedTags, period, config.subset(SOURCE_KEY));
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    return sink;
  }

  synchronized void registerSink(String name, String desc, MetricsSink sink) {
    checkNotNull(config, "config");
    MetricsConfig conf = sinkConfigs.get(name);
    MetricsSinkAdapter sa = conf != null
        ? newSink(name, desc, sink, conf)
        : newSink(name, desc, sink, config.subset(SINK_KEY));
    sinks.put(name, sa);
    sa.start();
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  private synchronized void configureSinks() {
    sinkConfigs = config.getInstanceConfigs(SINK_KEY);
    int confPeriod = 0;
    for (Entry<String, MetricsConfig> entry : sinkConfigs.entrySet()) {
      MetricsConfig conf = entry.getValue();
      int sinkPeriod = conf.getInt(PERIOD_KEY, PERIOD_DEFAULT);
      confPeriod = confPeriod == 0 ? sinkPeriod
                                   : ArithmeticUtils.gcd(confPeriod, sinkPeriod);
      String clsName = conf.getClassName("");
      if (clsName == null) continue;  // sink can be registered later on
      String sinkName = entry.getKey();
      try {
        MetricsSinkAdapter sa = newSink(sinkName,
            conf.getString(DESC_KEY, sinkName), conf);
        sa.start();
        sinks.put(sinkName, sa);
      }
      catch (Exception e) {
        LOG.warn("Error creating sink '"+ sinkName +"'", e);
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    }
    return "localhost";
  }

  private void registerSystemSource() {
    MetricsConfig sysConf = sourceConfigs.get(MS_NAME);
    sysSource = new MetricsSourceAdapter(prefix, MS_STATS_NAME, MS_STATS_DESC,
        MetricsAnnotations.makeSource(this), injectedTags, period,
        sysConf == null ? config.subset(SOURCE_KEY) : sysConf);
    sysSource.start();
  }
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        .add("test.sink.mysink0.class", FileSink.class.getName())
        .add("test.sink.mysink0.filename", outPath)
        // NB: we filter by context to exclude "metricssystem" context metrics:
        .add("test.sink.mysink0.context", "test1")
        .save(TestMetricsConfig.getTestFilename("hadoop-metrics2-test"));
    MetricsSystemImpl ms = new MetricsSystemImpl("test");
    ms.start();

    final MyMetrics1 mm1
      = new MyMetrics1().registerWith(ms);
    new MyMetrics2().registerWith(ms);

    mm1.testMetric1.incr();
    mm1.testMetric2.incr(2);

    ms.publishMetricsNow(); // publish the metrics
    ms.stop();
    ms.shutdown();

    InputStream is = null;
    ByteArrayOutputStream baos = null;
    String outFileContent = null;
    try {
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   * @return a metric object
   */
  public MetricMutableGaugeLong getLongGauge(String gaugeName,
      long potentialStartingValue) {
    // Try and get the guage.
    MetricMutable metric = metricsMap.get(gaugeName);

    // If it's not there then try and put a new one in the storage.
    if (metric == null) {

      // Create the potential new gauge.
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   * @return a metric object
   */
  public MetricMutableCounterLong getLongCounter(String counterName,
      long potentialStartingValue) {
    // See getLongGauge for description on how this works.
    MetricMutable counter = metricsMap.get(counterName);
    if (counter == null) {
      MetricMutableCounterLong newCounter = mf.newCounter(counterName, "",
          potentialStartingValue);
      counter = metricsMap.putIfAbsent(counterName, newCounter);
      if (counter == null) {
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    return (MetricMutableCounterLong) counter;
  }

  public MetricMutableHistogram getHistogram(String histoName) {
    // See getLongGauge for description on how this works.
    MetricMutable histo = metricsMap.get(histoName);
    if (histo == null) {
      MetricMutableHistogram newHisto = new MetricMutableHistogram(histoName,
          "");
      histo = metricsMap.putIfAbsent(histoName, newHisto);
      if (histo == null) {
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    return (MetricMutableHistogram) histo;
  }

  public MetricMutableQuantiles getQuantile(String histoName) {
    // See getLongGauge for description on how this works.
    MetricMutable histo = metricsMap.get(histoName);
    if (histo == null) {
      MetricMutableQuantiles newHisto = new MetricMutableQuantiles(histoName,
          "");
      histo = metricsMap.putIfAbsent(histoName, newHisto);
      if (histo == null) {
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Related Classes of org.apache.hadoop.metrics2.util.Servers

  • com.alibaba.wasp.metrics.BaseSourceImpl
  • com.alibaba.wasp.metrics.DynamicMetricsRegistry
  • com.alibaba.wasp.metrics.TestBaseSourceImpl
  • com.yammer.metrics.stats.ExponentiallyDecayingSample
  • com.yammer.metrics.stats.Snapshot
  • org.apache.commons.configuration.Configuration
  • org.apache.commons.configuration.PropertiesConfiguration
  • org.apache.commons.configuration.SubsetConfiguration
  • org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl
  • org.apache.hadoop.hbase.master.MetricsMasterSourceImpl
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