From aeb9b2179eaa4b468bec937570d3ac7de7ccaaea Mon Sep 17 00:00:00 2001 From: Amber Brown Date: Tue, 10 Sep 2019 00:14:58 +1000 Subject: [PATCH] Add a build info metric to Prometheus (#6005) --- changelog.d/6005.feature | 1 + synapse/metrics/__init__.py | 12 ++++++++++++ tests/test_metrics.py | 22 ++++++++++++++++++++-- 3 files changed, 33 insertions(+), 2 deletions(-) create mode 100644 changelog.d/6005.feature diff --git a/changelog.d/6005.feature b/changelog.d/6005.feature new file mode 100644 index 000000000..ed6491d3e --- /dev/null +++ b/changelog.d/6005.feature @@ -0,0 +1 @@ +The new Prometheus metric `synapse_build_info` exposes the Python version, OS version, and Synapse version of the running server. diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py index 488280b4a..b5c9595cb 100644 --- a/synapse/metrics/__init__.py +++ b/synapse/metrics/__init__.py @@ -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() diff --git a/tests/test_metrics.py b/tests/test_metrics.py index 2edbae5c6..270f853d6 100644 --- a/tests/test_metrics.py +++ b/tests/test_metrics.py @@ -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])