def test_gauge(self):
ag_interval = 2
stats = MetricsBucketAggregator('myhost', interval=ag_interval)
self.wait_for_bucket_boundary(ag_interval)
# Track some counters.
stats.submit_packets('my.first.gauge:1|g')
stats.submit_packets('my.first.gauge:5|g')
stats.submit_packets('my.second.gauge:1.5|g')
# Ensure that gauges roll up correctly.
self.sleep_for_interval_length(ag_interval)
metrics = self.sort_metrics(stats.flush())
nt.assert_equals(len(metrics), 2)
first, second = metrics
nt.assert_equals(first['metric'], 'my.first.gauge')
nt.assert_equals(first['points'][0][1], 5)
nt.assert_equals(first['host'], 'myhost')
nt.assert_equals(second['metric'], 'my.second.gauge')
nt.assert_equals(second['points'][0][1], 1.5)
# Ensure that old gauges get dropped due to old timestamps
stats.submit_metric('my.first.gauge', 5, 'g')
stats.submit_metric('my.first.gauge', 1, 'g', timestamp=1000000000)
stats.submit_metric('my.second.gauge', 20, 'g', timestamp=1000000000)
self.sleep_for_interval_length(ag_interval)
metrics = self.sort_metrics(stats.flush())
nt.assert_equals(len(metrics), 1)
first = metrics[0]
nt.assert_equals(first['metric'], 'my.first.gauge')
nt.assert_equals(first['points'][0][1], 5)
nt.assert_equals(first['host'], 'myhost')
def test_recent_point_threshold(self):
ag_interval = 1
threshold = 100
# The min is not enabled by default
stats = MetricsBucketAggregator(
'myhost',
recent_point_threshold=threshold,
interval=ag_interval,
histogram_aggregates=DEFAULT_HISTOGRAM_AGGREGATES + ['min'])
timestamp_beyond_threshold = time.time() - threshold * 2
# Ensure that old gauges get dropped due to old timestamps
stats.submit_metric('my.first.gauge', 5, 'g')
stats.submit_metric('my.first.gauge',
1,
'g',
timestamp=timestamp_beyond_threshold)
stats.submit_metric('my.second.gauge',
20,
'g',
timestamp=timestamp_beyond_threshold)
self.sleep_for_interval_length(ag_interval)
metrics = self.sort_metrics(stats.flush())
assert len(metrics) == 1
first = metrics[0]
nt.assert_equals(first['metric'], 'my.first.gauge')
nt.assert_equals(first['points'][0][1], 5)
nt.assert_equals(first['host'], 'myhost')
timestamp_within_threshold = time.time() - threshold / 2
bucket_for_timestamp_within_threshold = timestamp_within_threshold - (
timestamp_within_threshold % ag_interval)
stats.submit_metric('my.1.gauge', 5, 'g')
stats.submit_metric('my.1.gauge',
1,
'g',
timestamp=timestamp_within_threshold)
stats.submit_metric('my.2.counter',
20,
'c',
timestamp=timestamp_within_threshold)
stats.submit_metric('my.3.set',
20,
's',
timestamp=timestamp_within_threshold)
stats.submit_metric('my.4.histogram',
20,
'h',
timestamp=timestamp_within_threshold)
self.sleep_for_interval_length(ag_interval)
flush_timestamp = time.time()
# The bucket timestamp is the beginning of the bucket that ended before we flushed
bucket_timestamp = flush_timestamp - (flush_timestamp %
ag_interval) - ag_interval
metrics = self.sort_metrics(stats.flush())
nt.assert_equal(len(metrics), 11)
first, first_b, second, second_b, third, h1, h2, h3, h4, h5, h6 = metrics
nt.assert_equals(first['metric'], 'my.1.gauge')
nt.assert_equals(first['points'][0][1], 1)
nt.assert_equals(first['host'], 'myhost')
self.assert_almost_equal(first['points'][0][0],
bucket_for_timestamp_within_threshold, 0.1)
nt.assert_equals(first_b['metric'], 'my.1.gauge')
nt.assert_equals(first_b['points'][0][1], 5)
self.assert_almost_equal(first_b['points'][0][0], bucket_timestamp,
0.1)
nt.assert_equals(second['metric'], 'my.2.counter')
nt.assert_equals(second['points'][0][1], 20)
self.assert_almost_equal(second['points'][0][0],
bucket_for_timestamp_within_threshold, 0.1)
nt.assert_equals(second_b['metric'], 'my.2.counter')
nt.assert_equals(second_b['points'][0][1], 0)
self.assert_almost_equal(second_b['points'][0][0], bucket_timestamp,
0.1)
nt.assert_equals(third['metric'], 'my.3.set')
nt.assert_equals(third['points'][0][1], 1)
self.assert_almost_equal(third['points'][0][0],
bucket_for_timestamp_within_threshold, 0.1)
nt.assert_equals(h1['metric'], 'my.4.histogram.95percentile')
nt.assert_equals(h1['points'][0][1], 20)
self.assert_almost_equal(h1['points'][0][0],
bucket_for_timestamp_within_threshold, 0.1)
nt.assert_equal(h1['points'][0][0], h2['points'][0][0])
nt.assert_equal(h1['points'][0][0], h3['points'][0][0])
nt.assert_equal(h1['points'][0][0], h4['points'][0][0])
nt.assert_equal(h1['points'][0][0], h5['points'][0][0])