Examples of com.codahale.metrics.Gauge

com.codahale.metrics.Gauge

A gauge metric is an instantaneous reading of a particular value. To instrument a queue's depth, for example:

 final Queue<String> queue = new ConcurrentLinkedQueue<String>(); final Gauge<Integer> queueDepth = new Gauge<Integer>() { public Integer getValue() { return queue.size(); } };

@param < T> the type of the metric's value

                    2 * histograms.size() + 2 * timers.size()); // something like that




            for (Map.Entry<String, Gauge> gaugeEntry : gauges.entrySet()) {
                DemuxedKey key = new DemuxedKey(gaugeEntry.getKey());
                Gauge gauge = gaugeEntry.getValue();


                Object valueObj = gauge.getValue();
                if (valueObj == null) {
                    continue;
                }


                String valueStr = valueObj.toString();

View Full Code Here

            List<MetricDatum> data = new ArrayList<MetricDatum>(gauges.size() + counters.size() + histograms.size() +
                    meters.size() + timers.size()); // something like that


            for (Map.Entry<String, Gauge> gaugeEntry : gauges.entrySet()) {
                DemuxedKey key = new DemuxedKey(gaugeEntry.getKey());
                Gauge gauge = gaugeEntry.getValue();
                Object valueObj = gauge.getValue();
                if (valueObj == null) {
                    continue;
                }


                String valueStr = valueObj.toString();

View Full Code Here

    @Test
    @SuppressWarnings("unchecked")
    public void aGaugeAnnotatedMethodWithDefaultName() throws Exception {
        instance.doAnotherThing();


        final Gauge metric = registry.getGauges().get(name(InstrumentedWithGauge.class,
                                                                       "doAnotherThing", GaugeListener.GAUGE_SUFFIX));


        assertThat("Guice creates a metric",
                   metric,
                   is(notNullValue()));

View Full Code Here

    @Test
    @SuppressWarnings("unchecked")
    public void aGaugeAnnotatedMethodWithAbsoluteName() throws Exception {
        instance.doAThingWithAbsoluteName();


        final Gauge metric = registry.getGauges().get(name("absoluteName"));


        assertThat("Guice creates a metric",
                   metric,
                   is(notNullValue()));

View Full Code Here

    @Test
    @SuppressWarnings("unchecked")
    public void aGaugeAnnotatedMethod() throws Exception {
        instance.doAThing();


        final Gauge metric = registry.getGauges().get(name(InstrumentedWithGauge.class, "things"));


        assertThat("Guice creates a metric",
                   metric,
                   is(notNullValue()));

View Full Code Here

     * @param name counter name.
     * @param variable variable to add.
     */
    @Override
    public void addVariable(String group, String name, final Variable variable) {
        Gauge gauge = new Gauge() {
            @Override
            public Object getValue() {
                return variable.getValue();
            }
        };

View Full Code Here

  private boolean methodTakesNoParamsAndIsNonVoid(Method method) {
    return method.getGenericParameterTypes().length == 0 && method.getReturnType() != Void.class;
  }


  private void registerGauge(final Object object, final Method method, final String signature) {
    registry.register(name("gauge", signature), new Gauge() {
      @Override
      public Object getValue() {
        try {
          return method.invoke(object);
        } catch (Exception e) {

View Full Code Here

        }
    }




    void reportGauge(Map.Entry<String, Gauge> gaugeEntry, String type, List<MetricDatum> data) {
        Gauge gauge = gaugeEntry.getValue();


        Object valueObj = gauge.getValue();
        if (valueObj == null) {
            return;
        }


        String valueStr = valueObj.toString();

View Full Code Here

        }
    }




    void reportGauge(Map.Entry<String, Gauge> gaugeEntry, String type, List<MetricDatum> data) {
        Gauge gauge = gaugeEntry.getValue();


        Object valueObj = gauge.getValue();
        if (valueObj == null) {
            return;
        }


        String valueStr = valueObj.toString();

View Full Code Here

        }
    }




    void reportGauge(Map.Entry<String, Gauge> gaugeEntry, String type, List<MetricDatum> data) {
        Gauge gauge = gaugeEntry.getValue();


        Object valueObj = gauge.getValue();
        if (valueObj == null) {
            return;
        }


        String valueStr = valueObj.toString();

View Full Code Here

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