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# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 New Vector 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.
import logging
import synapse.metrics
from synapse.util.logcontext import LoggingContext
logger = logging.getLogger(__name__)
metrics = synapse.metrics.get_metrics_for("synapse.http.server")
# total number of responses served, split by method/servlet/tag
response_count = metrics.register_counter(
"response_count",
labels=["method", "servlet", "tag"],
alternative_names=(
# the following are all deprecated aliases for the same metric
metrics.name_prefix + x for x in (
"_requests",
"_response_time:count",
"_response_ru_utime:count",
"_response_ru_stime:count",
"_response_db_txn_count:count",
"_response_db_txn_duration:count",
)
)
)
requests_counter = metrics.register_counter(
"requests_received",
labels=["method", "servlet", ],
)
outgoing_responses_counter = metrics.register_counter(
"responses",
labels=["method", "code"],
)
response_timer = metrics.register_counter(
"response_time_seconds",
labels=["method", "servlet", "tag"],
alternative_names=(
metrics.name_prefix + "_response_time:total",
),
)
response_ru_utime = metrics.register_counter(
"response_ru_utime_seconds", labels=["method", "servlet", "tag"],
alternative_names=(
metrics.name_prefix + "_response_ru_utime:total",
),
)
response_ru_stime = metrics.register_counter(
"response_ru_stime_seconds", labels=["method", "servlet", "tag"],
alternative_names=(
metrics.name_prefix + "_response_ru_stime:total",
),
)
response_db_txn_count = metrics.register_counter(
"response_db_txn_count", labels=["method", "servlet", "tag"],
alternative_names=(
metrics.name_prefix + "_response_db_txn_count:total",
),
)
# seconds spent waiting for db txns, excluding scheduling time, when processing
# this request
response_db_txn_duration = metrics.register_counter(
"response_db_txn_duration_seconds", labels=["method", "servlet", "tag"],
alternative_names=(
metrics.name_prefix + "_response_db_txn_duration:total",
),
)
# seconds spent waiting for a db connection, when processing this request
response_db_sched_duration = metrics.register_counter(
"response_db_sched_duration_seconds", labels=["method", "servlet", "tag"]
)
# size in bytes of the response written
response_size = metrics.register_counter(
"response_size", labels=["method", "servlet", "tag"]
)
class RequestMetrics(object):
def start(self, time_msec, name):
self.start = time_msec
self.start_context = LoggingContext.current_context()
self.name = name
def stop(self, time_msec, request):
context = LoggingContext.current_context()
tag = ""
if context:
tag = context.tag
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed %r, %r",
context, self.start_context
)
return
outgoing_responses_counter.inc(request.method, str(request.code))
response_count.inc(request.method, self.name, tag)
response_timer.inc_by(
time_msec - self.start, request.method,
self.name, tag
)
ru_utime, ru_stime = context.get_resource_usage()
response_ru_utime.inc_by(
ru_utime, request.method, self.name, tag
)
response_ru_stime.inc_by(
ru_stime, request.method, self.name, tag
)
response_db_txn_count.inc_by(
context.db_txn_count, request.method, self.name, tag
)
response_db_txn_duration.inc_by(
context.db_txn_duration_ms / 1000., request.method, self.name, tag
)
response_db_sched_duration.inc_by(
context.db_sched_duration_ms / 1000., request.method, self.name, tag
)
response_size.inc_by(request.sentLength, request.method, self.name, tag)
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