mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-09-07 23:52:00 +00:00
Initial tiny attempt at (vectorable) counter metrics
This commit is contained in:
parent
e07fc62833
commit
e7420a3bef
54
synapse/metrics/metric.py
Normal file
54
synapse/metrics/metric.py
Normal file
@ -0,0 +1,54 @@
|
|||||||
|
# -*- coding: utf-8 -*-
|
||||||
|
# Copyright 2015 OpenMarket Ltd
|
||||||
|
#
|
||||||
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
# you may not use this file except in compliance with the License.
|
||||||
|
# You may obtain a copy of the License at
|
||||||
|
#
|
||||||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
#
|
||||||
|
# Unless required by applicable law or agreed to in writing, software
|
||||||
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
# See the License for the specific language governing permissions and
|
||||||
|
# limitations under the License.
|
||||||
|
|
||||||
|
|
||||||
|
class CounterMetric(object):
|
||||||
|
|
||||||
|
def __init__(self, name, keys=[]):
|
||||||
|
self.name = name
|
||||||
|
self.keys = keys # OK not to clone as we never write it
|
||||||
|
|
||||||
|
self.counts = {}
|
||||||
|
|
||||||
|
# Scalar metrics are never empty
|
||||||
|
if not len(keys):
|
||||||
|
self.counts[()] = 0
|
||||||
|
|
||||||
|
def inc(self, *values):
|
||||||
|
if len(values) != len(self.keys):
|
||||||
|
raise ValueError("Expected as many values to inc() as keys (%d)" %
|
||||||
|
(len(self.keys))
|
||||||
|
)
|
||||||
|
|
||||||
|
# TODO: should assert that the tag values are all strings
|
||||||
|
|
||||||
|
if values not in self.counts:
|
||||||
|
self.counts[values] = 1
|
||||||
|
else:
|
||||||
|
self.counts[values] += 1
|
||||||
|
|
||||||
|
def fetch(self):
|
||||||
|
return dict(self.counts)
|
||||||
|
|
||||||
|
def _render_key(self, values):
|
||||||
|
# TODO: some kind of value escape
|
||||||
|
return ",".join(["%s=%s" % kv for kv in zip(self.keys, values)])
|
||||||
|
|
||||||
|
def render(self):
|
||||||
|
if not len(self.keys):
|
||||||
|
return ["%s %d" % (self.name, self.counts[()])]
|
||||||
|
|
||||||
|
return ["%s{%s} %d" % (self.name, self._render_key(k), self.counts[k])
|
||||||
|
for k in sorted(self.counts.keys())]
|
0
tests/metrics/__init__.py
Normal file
0
tests/metrics/__init__.py
Normal file
61
tests/metrics/test_metric.py
Normal file
61
tests/metrics/test_metric.py
Normal file
@ -0,0 +1,61 @@
|
|||||||
|
# -*- coding: utf-8 -*-
|
||||||
|
# Copyright 2015 OpenMarket Ltd
|
||||||
|
#
|
||||||
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
# you may not use this file except in compliance with the License.
|
||||||
|
# You may obtain a copy of the License at
|
||||||
|
#
|
||||||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
#
|
||||||
|
# Unless required by applicable law or agreed to in writing, software
|
||||||
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
# See the License for the specific language governing permissions and
|
||||||
|
# limitations under the License.
|
||||||
|
|
||||||
|
from tests import unittest
|
||||||
|
|
||||||
|
from synapse.metrics.metric import CounterMetric
|
||||||
|
|
||||||
|
|
||||||
|
class CounterMetricTestCase(unittest.TestCase):
|
||||||
|
|
||||||
|
def test_scalar(self):
|
||||||
|
counter = CounterMetric("scalar")
|
||||||
|
|
||||||
|
self.assertEquals(counter.render(), [
|
||||||
|
"scalar 0",
|
||||||
|
])
|
||||||
|
|
||||||
|
counter.inc()
|
||||||
|
|
||||||
|
self.assertEquals(counter.render(), [
|
||||||
|
"scalar 1",
|
||||||
|
])
|
||||||
|
|
||||||
|
counter.inc()
|
||||||
|
counter.inc()
|
||||||
|
|
||||||
|
self.assertEquals(counter.render(), [
|
||||||
|
"scalar 3"
|
||||||
|
])
|
||||||
|
|
||||||
|
def test_vector(self):
|
||||||
|
counter = CounterMetric("vector", keys=["method"])
|
||||||
|
|
||||||
|
# Empty counter doesn't yet know what values it has
|
||||||
|
self.assertEquals(counter.render(), [])
|
||||||
|
|
||||||
|
counter.inc("GET")
|
||||||
|
|
||||||
|
self.assertEquals(counter.render(), [
|
||||||
|
"vector{method=GET} 1",
|
||||||
|
])
|
||||||
|
|
||||||
|
counter.inc("GET")
|
||||||
|
counter.inc("PUT")
|
||||||
|
|
||||||
|
self.assertEquals(counter.render(), [
|
||||||
|
"vector{method=GET} 2",
|
||||||
|
"vector{method=PUT} 1",
|
||||||
|
])
|
Loading…
Reference in New Issue
Block a user