def test_metrics_not_collected_if_zero_and_reset():
m = MetricsSet(MetricsRegistry(0, lambda x: None))
counter = m.counter("counter", reset_on_collect=False)
resetting_counter = m.counter("resetting_counter", reset_on_collect=True)
gauge = m.gauge("gauge", reset_on_collect=False)
resetting_gauge = m.gauge("resetting_gauge", reset_on_collect=True)
timer = m.timer("timer", reset_on_collect=False)
resetting_timer = m.timer("resetting_timer", reset_on_collect=True)
counter.inc(), resetting_counter.inc()
gauge.val = 5
resetting_gauge.val = 5
timer.update(1, 1)
resetting_timer.update(1, 1)
data = list(m.collect())
more_data = list(m.collect())
assert set(data[0]["samples"].keys()) == {
"counter",
"resetting_counter",
"gauge",
"resetting_gauge",
"timer.count",
"timer.sum.us",
"resetting_timer.count",
"resetting_timer.sum.us",
}
assert set(more_data[0]["samples"].keys()) == {"counter", "gauge", "timer.count", "timer.sum.us"}
def test_metrics_multithreaded():
metricset = MetricsSet(MetricsRegistry(0, lambda x: None))
pool = Pool(5)
def target():
for i in range(500):
metricset.counter("x").inc(i + 1)
time.sleep(0.0000001)
[pool.apply_async(target, ()) for i in range(10)]
pool.close()
pool.join()
expected = 10 * ((500 * 501) / 2)
assert metricset.counter("x").val == expected
def test_metrics_flushed_on_shutdown(sending_elasticapm_client):
# this is ugly, we need an API for this at some point...
metricset = MetricsSet(sending_elasticapm_client._metrics)
sending_elasticapm_client._metrics._metricsets["foo"] = metricset
metricset.counter("x").inc()
sending_elasticapm_client.close()
assert sending_elasticapm_client.httpserver.payloads
for item in sending_elasticapm_client.httpserver.payloads[0]:
try:
assert item["metricset"]["samples"]["x"]["value"] == 1
break
except KeyError:
pass
else:
assert False, "no item found with matching dict path metricset.samples.x.value"
def test_metric_limit(caplog, elasticapm_client):
m = MetricsSet(MetricsRegistry(elasticapm_client))
with caplog.at_level(logging.WARNING, logger="elasticapm.metrics"):
for i in range(2):
counter = m.counter("counter", some_label=i)
gauge = m.gauge("gauge", some_label=i)
timer = m.timer("timer", some_label=i)
if i == 0:
assert isinstance(timer, Timer)
assert isinstance(gauge, Gauge)
assert isinstance(counter, Counter)
else:
assert isinstance(timer, NoopMetric)
assert isinstance(gauge, NoopMetric)
assert isinstance(counter, NoopMetric)
assert_any_record_contains(caplog.records, "The limit of 3 metricsets has been reached", "elasticapm.metrics")
def test_metrics_histogram(elasticapm_client):
metricset = MetricsSet(MetricsRegistry(elasticapm_client))
hist = metricset.histogram("x", buckets=[1, 10, 100])
assert len(hist.buckets) == 4
hist.update(0.3)
hist.update(1)
hist.update(5)
hist.update(20)
hist.update(100)
hist.update(1000)
data = list(metricset.collect())
assert len(data) == 1
d = data[0]
assert d["samples"]["x"]["counts"] == [2, 1, 2, 1]
assert d["samples"]["x"]["values"] == [0.5, 5.5, 55.0, 100]
def test_metric_limit(caplog):
m = MetricsSet(MetricsRegistry(0, lambda x: None))
with caplog.at_level(logging.WARNING, logger="elasticapm.metrics"):
for i in range(2):
counter = m.counter("counter", some_label=i)
gauge = m.gauge("gauge", some_label=i)
timer = m.timer("timer", some_label=i)
if i == 0:
assert isinstance(timer, Timer)
assert isinstance(gauge, Gauge)
assert isinstance(counter, Counter)
else:
assert isinstance(timer, NoopMetric)
assert isinstance(gauge, NoopMetric)
assert isinstance(counter, NoopMetric)
assert len(caplog.records) == 1
record = caplog.records[0]
assert "The limit of 3 metricsets has been reached" in record.message
def test_metrics_labels():
metricset = MetricsSet(MetricsRegistry(0, lambda x: None))
metricset.counter("x", mylabel="a").inc()
metricset.counter("y", mylabel="a").inc()
metricset.counter("x", mylabel="b").inc().inc()
metricset.counter("x", mylabel="b", myotherlabel="c").inc()
metricset.counter("x", mylabel="a").dec()
data = list(metricset.collect())
asserts = 0
for d in data:
if d["tags"] == {"mylabel": "a"}:
assert d["samples"]["x"]["value"] == 0
assert d["samples"]["y"]["value"] == 1
asserts += 1
elif d["tags"] == {"mylabel": "b"}:
assert d["samples"]["x"]["value"] == 2
asserts += 1
elif d["tags"] == {"mylabel": "b", "myotherlabel": "c"}:
assert d["samples"]["x"]["value"] == 1
asserts += 1
assert asserts == 3
def test_metrics_counter():
metricset = MetricsSet(MetricsRegistry(0, lambda x: None))
metricset.counter("x").inc()
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").inc(10)
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 11
metricset.counter("x").dec(10)
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").dec()
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 0
def test_metrics_counter(elasticapm_client):
metricset = MetricsSet(MetricsRegistry(elasticapm_client))
metricset.counter("x").inc()
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").inc(10)
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 11
metricset.counter("x").dec(10)
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").dec()
data = next(metricset.collect())
assert data["samples"]["x"]["value"] == 0
def test_metrics_counter():
metricset = MetricsSet()
metricset.counter("x").inc()
data = metricset.collect()
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").inc(10)
data = metricset.collect()
assert data["samples"]["x"]["value"] == 11
metricset.counter("x").dec(10)
data = metricset.collect()
assert data["samples"]["x"]["value"] == 1
metricset.counter("x").dec()
data = metricset.collect()
assert data["samples"]["x"]["value"] == 0