Examples of com.codahale.metrics.Timer

com.codahale.metrics.Timer
A timer metric which aggregates timing durations and provides duration statistics, plus throughput statistics via {@link Meter}.

      }
      // timers for scheduler operations
      int timeWindowSize = conf.getInt(
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE,
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE_DEFAULT);
      schedulerAllocateTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimerMap = new HashMap<SchedulerEventType, Timer>();
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Timer timer = new Timer(new SlidingWindowReservoir(timeWindowSize));
        schedulerHandleTimerMap.put(e, timer);
      }
      // histogram for scheduler operations (Samplers)
      schedulerHistogramList = new ArrayList<Histogram>();
      histogramTimerMap = new HashMap<Histogram, Timer>();

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    @Override
    public void run() {
      samplerLock.lock();
      try {
        for (Histogram histogram : schedulerHistogramList) {
          Timer timer = histogramTimerMap.get(histogram);
          histogram.update((int) timer.getSnapshot().getMean());
        }
      } finally {
        samplerLock.unlock();
      }
    }

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                sampling(key, histogram, 1.0, "histogramSet", data);
            }


            for (Map.Entry<String, Timer> timerEntry : timers.entrySet()) {
                DemuxedKey key = new DemuxedKey(timerEntry.getKey());
                Timer timer = timerEntry.getValue();


                count(key, timer, "timerCount", data);
                // nanos -> millis
                sampling(key, timer, 0.000001, "timerSet", data);

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      }
      // timers for scheduler operations
      int timeWindowSize = conf.getInt(
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE,
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE_DEFAULT);
      schedulerAllocateTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimerMap = new HashMap<SchedulerEventType, Timer>();
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Timer timer = new Timer(new SlidingWindowReservoir(timeWindowSize));
        schedulerHandleTimerMap.put(e, timer);
      }
      // histogram for scheduler operations (Samplers)
      schedulerHistogramList = new ArrayList<Histogram>();
      histogramTimerMap = new HashMap<Histogram, Timer>();

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    @Override
    public void run() {
      samplerLock.lock();
      try {
        for (Histogram histogram : schedulerHistogramList) {
          Timer timer = histogramTimerMap.get(histogram);
          histogram.update((int) timer.getSnapshot().getMean());
        }
      } finally {
        samplerLock.unlock();
      }
    }

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    public Object getValueAndReset() {
        final Map<String, Number> ret = new HashMap<String, Number>();


        for (Map.Entry<String, Timer> entry : registry.getTimers().entrySet()) {
            String prefix = entry.getKey() + "/";
            Timer timer = entry.getValue();
            Snapshot snapshot = timer.getSnapshot();


            ret.put(prefix + "count", timer.getCount());
            ret.put(prefix + "max", snapshot.getMax());
            ret.put(prefix + "mean", snapshot.getMean());
            ret.put(prefix + "min", snapshot.getMin());
            ret.put(prefix + "stddev", snapshot.getStdDev());
            ret.put(prefix + "p50", snapshot.getMedian());
            ret.put(prefix + "p75", snapshot.get75thPercentile());
            ret.put(prefix + "p95", snapshot.get95thPercentile());
            ret.put(prefix + "p98", snapshot.get98thPercentile());
            ret.put(prefix + "p99", snapshot.get99thPercentile());
            ret.put(prefix + "p999", snapshot.get999thPercentile());
            ret.put(prefix + "mean_rate", timer.getMeanRate());
            ret.put(prefix + "m1_rate", timer.getOneMinuteRate());
            ret.put(prefix + "m5_rate", timer.getFiveMinuteRate());
            ret.put(prefix + "m15_rate", timer.getFifteenMinuteRate());
        }
        return ret;
    }

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        }


        if (method.getMethod().isAnnotationPresent(Timed.class)) {
            final Timed annotation = method.getMethod().getAnnotation(Timed.class);
            final String name = chooseName(annotation.name(), annotation.absolute(), method);
            final Timer timer = registry.timer(name);
            dispatcher = new TimedRequestDispatcher(dispatcher, timer);
        }


        if (method.getMethod().isAnnotationPresent(Metered.class)) {
            final Metered annotation = method.getMethod().getAnnotation(Metered.class);

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    void handleStart(Exchange exchange, MetricRegistry registry, String metricsName) {
        String propertyName = getPropertyName(metricsName);
        Timer.Context context = getTimerContextFromExchange(exchange, propertyName);
        if (context == null) {
            Timer timer = registry.timer(metricsName);
            context = timer.time();
            exchange.setProperty(propertyName, context);
        } else {
            LOG.warn("Timer \"{}\" already running", metricsName);
        }
    }

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        }


        // create statistics holder
        // for know we record only all the timings of a complete exchange (responses)
        // we have in-flight / total statistics already from camel-core
        Timer responses = registryService.getMetricsRegistry().timer(createName("responses"));
        statistics = new MetricsStatistics(responses);
    }

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    static final String TIMED_SUFFIX = "timer";


    static MethodInterceptor forMethod(MetricRegistry metricRegistry, Class<?> klass, Method method) {
        final Timed annotation = method.getAnnotation(Timed.class);
        if (annotation != null) {
            final Timer timer = metricRegistry.timer(determineName(annotation, klass, method));
            return new TimedInterceptor(timer);
        }
        return null;
    }

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