How to use

getHistogram

method

in

uk.gov.dstl.baleen.core.metrics.MetricsFactory

/**
 * Get or create a new histogram.
 *
 * @param name
 * @return
 */
public Histogram getHistogram(String name) {
 return factory.getHistogram(base, name);
}

/**
 * Get or create a new histogram.
 *
 * @param name
 * @return
 */
public Histogram getHistogram(String name) {
 return factory.getHistogram(base, name);
}

@Test
public void testGetHistogram() {
 Histogram a = metrics.getHistogram(MetricsFactoryTest.class, "a");
 assertNotNull(a);
 assertSame(a, metrics.getHistogram(MetricsFactoryTest.class, "a"));
 assertNotEquals(a, metrics.getHistogram(MetricsFactoryTest.class, "b"));
 Histogram b = metrics.getHistogram(MetricsFactoryTest.class.getCanonicalName(), "b");
 assertNotNull(b);
 assertSame(b, metrics.getHistogram(MetricsFactoryTest.class.getCanonicalName(), "b"));
 assertNotEquals(b, metrics.getHistogram(MetricsFactoryTest.class.getCanonicalName(), "c"));
}

@Test
public void testGetHistogram() {
 metrics.getHistogram("histogram");
 verify(factory).getHistogram(anyString(), eq("histogram"));
}

@Test
public void testRemove() {
 metrics.getCounter(MetricsFactoryTest.class, "removeC");
 metrics.getTimer(MetricsFactoryTest.class, "removeT");
 metrics.getHistogram(MetricsFactoryTest.class, "removeH");
 metrics.getMeter(MetricsFactoryTest.class, "removeM");
 assertFalse(metrics.getRegistry().getMetrics().isEmpty());
 metrics.removeAll();
 assertTrue(metrics.getRegistry().getMetrics().isEmpty());
}

@Test
public void testDoesntCrash() {
 MetricsFactory factory = MetricsFactory.getInstance();
 factory.getRegistry().addListener(new LoggingMetricListener());
 assertNotNull(factory.getCounter(LoggingMetricListenerTest.class, "a"));
 assertNotNull(factory.getHistogram(LoggingMetricListenerTest.class, "b"));
 assertNotNull(factory.getMeter(LoggingMetricListenerTest.class, "c"));
 assertNotNull(factory.getTimer(LoggingMetricListenerTest.class, "d"));
 factory.removeAll();
}