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Add a build info metric to Prometheus (#6005)

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Amber Brown 2019-09-10 00:14:58 +10:00 committed by GitHub
parent ea6956c55c
commit aeb9b2179e
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3 changed files with 33 additions and 2 deletions
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1
changelog.d/6005.feature Normal file
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@ -0,0 +1 @@
The new Prometheus metric `synapse_build_info` exposes the Python version, OS version, and Synapse version of the running server.

12
synapse/metrics/__init__.py
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@ -29,11 +29,13 @@ from prometheus_client.core import REGISTRY, GaugeMetricFamily, HistogramMetricF
from twisted.internet import reactor
import synapse
from synapse.metrics._exposition import (
MetricsResource,
generate_latest,
start_http_server,
)
from synapse.util.versionstring import get_version_string
logger = logging.getLogger(__name__)
@ -385,6 +387,16 @@ event_processing_last_ts = Gauge("synapse_event_processing_last_ts", "", ["name"
# finished being processed.
event_processing_lag = Gauge("synapse_event_processing_lag", "", ["name"])
# Build info of the running server.
build_info = Gauge(
"synapse_build_info", "Build information", ["pythonversion", "version", "osversion"]
)
build_info.labels(
" ".join([platform.python_implementation(), platform.python_version()]),
get_version_string(synapse),
" ".join([platform.system(), platform.release()]),
).set(1)
last_ticked = time.time()

22
tests/test_metrics.py
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@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2018 New Vector Ltd
# Copyright 2019 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.
@ -13,8 +14,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
from synapse.metrics import InFlightGauge
from synapse.metrics import REGISTRY, InFlightGauge, generate_latest
from tests import unittest
@ -111,3 +111,21 @@ class TestMauLimit(unittest.TestCase):
}
return results
class BuildInfoTests(unittest.TestCase):
def test_get_build(self):
"""
The synapse_build_info metric reports the OS version, Python version,
and Synapse version.
"""
items = list(
filter(
lambda x: b"synapse_build_info{" in x,
generate_latest(REGISTRY).split(b"\n"),
)
)
self.assertEqual(len(items), 1)
self.assertTrue(b"osversion=" in items[0])
self.assertTrue(b"pythonversion=" in items[0])
self.assertTrue(b"version=" in items[0])