@Override
public void processHistogram(MetricName name, Histogram histogram, PrintStream stream) {
final Snapshot snapshot = histogram.getSnapshot();
stream.printf(locale, " min = %2.2f\n", histogram.getMin());
stream.printf(locale, " max = %2.2f\n", histogram.getMax());
stream.printf(locale, " mean = %2.2f\n", histogram.getMean());
stream.printf(locale, " stddev = %2.2f\n", histogram.getStdDev());
stream.printf(locale, " median = %2.2f\n", snapshot.getMedian());
stream.printf(locale, " 75%% <= %2.2f\n", snapshot.get75thPercentile());
stream.printf(locale, " 95%% <= %2.2f\n", snapshot.get95thPercentile());
stream.printf(locale, " 98%% <= %2.2f\n", snapshot.get98thPercentile());
stream.printf(locale, " 99%% <= %2.2f\n", snapshot.get99thPercentile());
stream.printf(locale, " 99.9%% <= %2.2f\n", snapshot.get999thPercentile());
}
@Test
public void reportsHistogramValues() throws Exception {
final Histogram histogram = mock(Histogram.class);
when(histogram.getCount()).thenReturn(1L);
when(histogram.getMax()).thenReturn(2L);
when(histogram.getMean()).thenReturn(3.0);
when(histogram.getMin()).thenReturn(4L);
when(histogram.getStdDev()).thenReturn(5.0);
final Snapshot snapshot = mock(Snapshot.class);
when(snapshot.getMedian()).thenReturn(6.0);
when(snapshot.get75thPercentile()).thenReturn(7.0);
when(snapshot.get95thPercentile()).thenReturn(8.0);
when(snapshot.get98thPercentile()).thenReturn(9.0);
when(snapshot.get99thPercentile()).thenReturn(10.0);
when(snapshot.get999thPercentile()).thenReturn(11.0);
when(histogram.getSnapshot()).thenReturn(snapshot);
reporter.report(
this.<Gauge>map(),
this.<Counter>map(),
map("test.histogram", histogram),
this.<Meter>map(),
this.<Timer>map());
verify(ganglia)
.announce(
"test.histogram.count", "1", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.max", "2", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.mean", "3.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.min", "4", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.stddev",
"5.0",
GMetricType.DOUBLE,
"",
GMetricSlope.BOTH,
60,
0,
"test");
verify(ganglia)
.announce(
"test.histogram.p50", "6.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.p75", "7.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.p95", "8.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.p98", "9.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.p99", "10.0", GMetricType.DOUBLE, "", GMetricSlope.BOTH, 60, 0, "test");
verify(ganglia)
.announce(
"test.histogram.p999",
"11.0",
GMetricType.DOUBLE,
"",
GMetricSlope.BOTH,
60,
0,
"test");
verifyNoMoreInteractions(ganglia);
}
