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# -*- coding: utf-8 -*-
# Copyright 2019 The Matrix.org Foundation C.I.C.
#
# 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 synapse.metrics import REGISTRY
from synapse.types import Requester, UserID
from tests.unittest import HomeserverTestCase
class ExtremStatisticsTestCase(HomeserverTestCase):
def test_exposed_to_prometheus(self):
"""
Forward extremity counts are exposed via Prometheus.
"""
room_creator = self.hs.get_room_creation_handler()
user = UserID("alice", "test")
requester = Requester(user, None, False, None, None)
# Real events, forward extremities
events = [(3, 2), (6, 2), (4, 6)]
for event_count, extrems in events:
info = self.get_success(room_creator.create_room(requester, {}))
room_id = info["room_id"]
last_event = None
# Make a real event chain
for i in range(event_count):
ev = self.create_and_send_event(room_id, user, False, last_event)
last_event = [ev]
# Sprinkle in some extremities
for i in range(extrems):
ev = self.create_and_send_event(room_id, user, False, last_event)
# Let it run for a while, then pull out the statistics from the
# Prometheus client registry
self.reactor.advance(60 * 60 * 1000)
self.pump(1)
items = list(
filter(
lambda x: x.name == "synapse_forward_extremities",
list(REGISTRY.collect()),
)
)
# Check the values are what we want
buckets = {}
_count = 0
_sum = 0
for i in items[0].samples:
if i[0].endswith("_bucket"):
buckets[i[1]['le']] = i[2]
elif i[0].endswith("_count"):
_count = i[2]
elif i[0].endswith("_sum"):
_sum = i[2]
# 3 buckets, 2 with 2 extrems, 1 with 6 extrems (bucketed as 7), and
# +Inf which is all
self.assertEqual(
buckets,
{
1.0: 0,
2.0: 2,
3.0: 0,
5.0: 0,
7.0: 1,
10.0: 0,
15.0: 0,
20.0: 0,
50.0: 0,
100.0: 0,
200.0: 0,
500.0: 0,
"+Inf": 3,
},
)
# 3 rooms, with 10 total events
self.assertEqual(_count, 3)
self.assertEqual(_sum, 10)