mirror of
https://mau.dev/maunium/synapse.git
synced 2024-07-15 23:51:58 +00:00
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
# -*- 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())]
|