Examples of com.netflix.servo.publish.CounterToRateMetricTransform

com.netflix.servo.publish.CounterToRateMetricTransform
Converts counter metrics into a rate per second. The rate is calculated by comparing two samples of given metric and looking at the delta. Since two samples are needed to calculate the rate, no value will be sent to the wrapped observer until a second sample arrives. If a given metric is not updated within a given heartbeat interval, the previous cached value for the counter will be dropped such that if a new sample comes in it will be treated as the first sample for that metric.
Counters should be monotonically increasing values. If a counter value decreases from one sample to the next, then we will assume the counter value was reset and send a rate of 0. This is similar to the RRD concept of type DERIVE with a min of 0.
This class is not thread safe and should generally be wrapped by an async observer to prevent issues.

        try
        {
            PollScheduler scheduler = PollScheduler.getInstance();
            scheduler.start();
            MetricObserver fileObserver = new FileMetricObserver("stats", new File("."));
            MetricObserver transform = new CounterToRateMetricTransform(fileObserver, 2, TimeUnit.MINUTES);
            PollRunnable task = new PollRunnable(new MonitorRegistryMetricPoller(), BasicMetricFilter.MATCH_ALL, transform);
            scheduler.addPoller(task, 1, TimeUnit.MINUTES);
        }
        catch (Throwable e)
        {

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    private Main() {
    }


    private static MetricObserver rateTransform(MetricObserver observer) {
        final long heartbeat = 2 * Config.getPollInterval();
        return new CounterToRateMetricTransform(observer, heartbeat, TimeUnit.SECONDS);
    }

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          new DefaultAWSCredentialsProviderChain());
    }


  private MetricObserver rateTransform(MetricObserver observer) {
        final long heartbeat = 2 * config.getLong("metrics.poll.interval", 5);
        return new CounterToRateMetricTransform(observer, heartbeat, TimeUnit.SECONDS);
    }

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            throw new RuntimeException(e);
        }


        LOG.debug("created metrics dir " + metricsDir.getAbsolutePath());


        MetricObserver transform = new CounterToRateMetricTransform(
                new FileMetricObserver("ZuulMetrics", metricsDir),
                heartbeatInterval, TimeUnit.SECONDS);


        PollRunnable task = new PollRunnable(
                new MonitorRegistryMetricPoller(),

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com.fluxcapacitor.core.metrics.FluxMetrics

com.netflix.jmeter.report.ServoSummariser

com.netflix.servo.example.Main

com.netflix.servo.Metric

com.netflix.servo.monitor.MonitorConfig

com.netflix.servo.tag.TagList

com.netflix.zuul.plugins.MetricPoller

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