Examples with StatsTimer com.netflix.servo.monitor.StatsTimer used on opensource projects

Example 1 with StatsTimer

use of com.netflix.servo.monitor.StatsTimer in project tutorials by eugenp.

the class MetricTypeTest method givenStatsTimer_whenExecuteTask_thenStatsCalculated.

@Test
public // ==
void givenStatsTimer_whenExecuteTask_thenStatsCalculated() throws Exception {
    System.setProperty("netflix.servo", "1000");
    StatsTimer timer = new StatsTimer(MonitorConfig.builder("test").build(), new StatsConfig.Builder().withComputeFrequencyMillis(2000).withPercentiles(new double[] { 99.0, 95.0, 90.0 }).withPublishMax(true).withPublishMin(true).withPublishCount(true).withPublishMean(true).withPublishStdDev(true).withPublishVariance(true).build(), MILLISECONDS);
    Stopwatch stopwatch = timer.start();
    MILLISECONDS.sleep(1);
    timer.record(3, MILLISECONDS);
    stopwatch.stop();
    stopwatch = timer.start();
    timer.record(6, MILLISECONDS);
    MILLISECONDS.sleep(2);
    stopwatch.stop();
    assertEquals("timer should count 12 milliseconds in total", 12, timer.getTotalTime());
    assertEquals("timer should count 12 milliseconds in total", 12, timer.getTotalMeasurement());
    assertEquals("timer should record 4 updates", 4, timer.getCount());
    assertEquals("stats timer value time-cost/update should be 2", 3, timer.getValue().intValue());
    final Map<String, Number> metricMap = timer.getMonitors().stream().collect(toMap(monitor -> getMonitorTagValue(monitor, "statistic"), monitor -> (Number) monitor.getValue()));
    assertThat(metricMap.keySet(), containsInAnyOrder("count", "totalTime", "max", "min", "variance", "stdDev", "avg", "percentile_99", "percentile_95", "percentile_90"));
}