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Metrics: Follow conventions (thanks @cherti)

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This commit is contained in:
Raphael Michel
2017-03-27 21:39:50 +02:00
parent 455b0f2015
commit e28030576a
4 changed files with 38 additions and 33 deletions
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19
src/pretix/base/metrics.py
View File

@@ -174,14 +174,13 @@ class Histogram(Metric):
summetric = self._construct_metric_identifier(self.name + '_sum', kwargs)
self._inc_in_redis(summetric, amount)
kwargs_le = dict(kwargs.items())
for i, bound in enumerate(self.buckets):
if amount <= bound:
kwargs_le = dict(kwargs.items())
kwargs_le['le'] = _float_to_go_string(bound)
bmetric = self._construct_metric_identifier(self.name + '_bucket', kwargs_le,
labelnames=self.labelnames + ["le"])
self._inc_in_redis(bmetric, 1)
break
def metric_values():
@@ -204,11 +203,11 @@ def metric_values():
"""
Provided metrics
"""
http_view_requests = Counter("http_view_requests", "Total number of HTTP requests made.",
["status_code", "method", "url_name"])
http_view_times = Histogram("http_view_times", "Return time of views.",
["status_code", "method", "url_name"])
celery_task_runs = Counter("celery_task_runs", "Total calls to a celery task",
["task_name", "status"])
celery_task_times = Histogram("celery_task_times", "Call time of a celery task",
["task_name"])
pretix_view_requests_total = Counter("pretix_view_requests_total", "Total number of HTTP requests made.",
["status_code", "method", "url_name"])
pretix_view_duration_seconds = Histogram("pretix_view_duration_seconds", "Return time of views.",
["status_code", "method", "url_name"])
pretix_task_runs_total = Counter("pretix_task_runs_total", "Total calls to a celery task",
["task_name", "status"])
pretix_task_duration_seconds = Histogram("pretix_task_duration_seconds", "Call time of a celery task",
["task_name"])

10
src/pretix/base/services/async.py
View File

@@ -15,7 +15,9 @@ import time
from django.conf import settings
from django.db import transaction
from pretix.base.metrics import celery_task_runs, celery_task_times
from pretix.base.metrics import (
pretix_task_duration_seconds, pretix_task_runs_total,
)
from pretix.celery_app import app
@@ -38,7 +40,7 @@ class ProfiledTask(app.Task):
tottime = time.perf_counter() - t0
if settings.METRICS_ENABLED:
celery_task_times.observe(tottime, task_name=self.name)
pretix_task_duration_seconds.observe(tottime, task_name=self.name)
return ret
def on_failure(self, exc, task_id, args, kwargs, einfo):
@@ -48,13 +50,13 @@ class ProfiledTask(app.Task):
if isinstance(exc, t):
expected = True
break
celery_task_runs.inc(1, task_name=self.name, status="expected-error" if expected else "error")
pretix_task_runs_total.inc(1, task_name=self.name, status="expected-error" if expected else "error")
return super().on_failure(exc, task_id, args, kwargs, einfo)
def on_success(self, retval, task_id, args, kwargs):
if settings.METRICS_ENABLED:
celery_task_runs.inc(1, task_name=self.name, status="success")
pretix_task_runs_total.inc(1, task_name=self.name, status="success")
return super().on_success(retval, task_id, args, kwargs)

12
src/pretix/helpers/metrics/middleware.py
View File

@@ -2,7 +2,9 @@ import time
from django.urls import resolve
from pretix.base.metrics import http_view_requests, http_view_times
from pretix.base.metrics import (
pretix_view_duration_seconds, pretix_view_requests_total,
)
class MetricsMiddleware(object):
@@ -28,9 +30,9 @@ class MetricsMiddleware(object):
t0 = time.perf_counter()
resp = self.get_response(request)
tdiff = time.perf_counter() - t0
http_view_requests.inc(1, status_code=resp.status_code, method=request.method,
url_name=url.namespace + ':' + url.url_name)
http_view_times.observe(tdiff, status_code=resp.status_code, method=request.method,
url_name=url.namespace + ':' + url.url_name)
pretix_view_requests_total.inc(1, status_code=resp.status_code, method=request.method,
url_name=url.namespace + ':' + url.url_name)
pretix_view_duration_seconds.observe(tdiff, status_code=resp.status_code, method=request.method,
url_name=url.namespace + ':' + url.url_name)
return resp

30
src/tests/base/test_metrics.py
View File

@@ -36,27 +36,27 @@ def test_counter(monkeypatch):
monkeypatch.setattr(metrics, "redis", fake_redis, raising=False)
# now test
fullname_get = metrics.http_view_requests._construct_metric_identifier(
'http_view_requests', {"status_code": "200", "url_name": "foo", "method": "GET"}
fullname_get = metrics.pretix_view_requests_total._construct_metric_identifier(
'pretix_view_requests_total', {"status_code": "200", "url_name": "foo", "method": "GET"}
)
fullname_post = metrics.http_view_requests._construct_metric_identifier(
'http_view_requests', {"status_code": "200", "url_name": "foo", "method": "POST"}
fullname_post = metrics.pretix_view_requests_total._construct_metric_identifier(
'pretix_view_requests_total', {"status_code": "200", "url_name": "foo", "method": "POST"}
)
metrics.http_view_requests.inc(status_code="200", url_name="foo", method="GET")
metrics.pretix_view_requests_total.inc(status_code="200", url_name="foo", method="GET")
assert fake_redis.storage[fullname_get] == 1
metrics.http_view_requests.inc(status_code="200", url_name="foo", method="GET")
metrics.pretix_view_requests_total.inc(status_code="200", url_name="foo", method="GET")
assert fake_redis.storage[fullname_get] == 2
metrics.http_view_requests.inc(7, status_code="200", url_name="foo", method="GET")
metrics.pretix_view_requests_total.inc(7, status_code="200", url_name="foo", method="GET")
assert fake_redis.storage[fullname_get] == 9
metrics.http_view_requests.inc(7, status_code="200", url_name="foo", method="POST")
metrics.pretix_view_requests_total.inc(7, status_code="200", url_name="foo", method="POST")
assert fake_redis.storage[fullname_get] == 9
assert fake_redis.storage[fullname_post] == 7
with pytest.raises(ValueError):
metrics.http_view_requests.inc(-4, status_code="200", url_name="foo", method="POST")
metrics.pretix_view_requests_total.inc(-4, status_code="200", url_name="foo", method="POST")
with pytest.raises(ValueError):
metrics.http_view_requests.inc(-4, status_code="200", url_name="foo", method="POST", too="much")
metrics.pretix_view_requests_total.inc(-4, status_code="200", url_name="foo", method="POST", too="much")
# test dimensionless counters
dimless_counter = metrics.Counter("dimless_counter", "this is a helpstring")
@@ -137,6 +137,8 @@ def test_histogram(monkeypatch):
assert fake_redis.storage['my_histogram_count{dimension="one"}'] == 1
assert fake_redis.storage['my_histogram_sum{dimension="one"}'] == 3.0
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="5.0"}'] == 1
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="10.0"}'] == 1
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="+Inf"}'] == 1
test_hist.observe(3.0, dimension="one")
assert fake_redis.storage['my_histogram_count{dimension="one"}'] == 2
assert fake_redis.storage['my_histogram_sum{dimension="one"}'] == 6.0
@@ -144,14 +146,14 @@ def test_histogram(monkeypatch):
test_hist.observe(0.9, dimension="one")
assert fake_redis.storage['my_histogram_count{dimension="one"}'] == 3
assert fake_redis.storage['my_histogram_sum{dimension="one"}'] == 6.9
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="5.0"}'] == 2
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="5.0"}'] == 3
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="1.0"}'] == 1
test_hist.observe(0.9, dimension="two")
assert fake_redis.storage['my_histogram_count{dimension="one"}'] == 3
assert fake_redis.storage['my_histogram_count{dimension="two"}'] == 1
assert fake_redis.storage['my_histogram_sum{dimension="one"}'] == 6.9
assert fake_redis.storage['my_histogram_sum{dimension="two"}'] == 0.9
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="5.0"}'] == 2
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="5.0"}'] == 3
assert fake_redis.storage['my_histogram_bucket{dimension="one",le="1.0"}'] == 1
assert fake_redis.storage['my_histogram_bucket{dimension="two",le="1.0"}'] == 1
@@ -164,11 +166,11 @@ def test_metrics_view(monkeypatch, client):
monkeypatch.setattr(metricsview.metrics, "redis", fake_redis, raising=False)
counter_value = 3
fullname = metrics.http_view_requests._construct_metric_identifier(
fullname = metrics.pretix_view_requests_total._construct_metric_identifier(
'http_requests_total',
{"status_code": "200", "url_name": "foo", "method": "GET"}
)
metricsview.metrics.http_view_requests.inc(counter_value, status_code="200", url_name="foo", method="GET")
metricsview.metrics.pretix_view_requests_total.inc(counter_value, status_code="200", url_name="foo", method="GET")
# test unauthorized-page
assert "You are not authorized" in client.get('/metrics').content.decode('utf-8')