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Allow configuration of Synapse's cache without using synctl or environment variables (#6391)

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Amber Brown 2020-05-12 03:45:23 +10:00 • committed by GitHub
parent a8580c5f19
commit 7cb8b4bc67
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32 changed files with 620 additions and 146 deletions
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34
tests/test_metrics.py
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@ -15,6 +15,7 @@
# limitations under the License.
from synapse.metrics import REGISTRY, InFlightGauge, generate_latest
from synapse.util.caches.descriptors import Cache
from tests import unittest
@ -129,3 +130,36 @@ class BuildInfoTests(unittest.TestCase):
self.assertTrue(b"osversion=" in items[0])
self.assertTrue(b"pythonversion=" in items[0])
self.assertTrue(b"version=" in items[0])
class CacheMetricsTests(unittest.HomeserverTestCase):
def test_cache_metric(self):
"""
Caches produce metrics reflecting their state when scraped.
"""
CACHE_NAME = "cache_metrics_test_fgjkbdfg"
cache = Cache(CACHE_NAME, max_entries=777)
items = {
x.split(b"{")[0].decode("ascii"): x.split(b" ")[1].decode("ascii")
for x in filter(
lambda x: b"cache_metrics_test_fgjkbdfg" in x,
generate_latest(REGISTRY).split(b"\n"),
)
}
self.assertEqual(items["synapse_util_caches_cache_size"], "0.0")
self.assertEqual(items["synapse_util_caches_cache_max_size"], "777.0")
cache.prefill("1", "hi")
items = {
x.split(b"{")[0].decode("ascii"): x.split(b" ")[1].decode("ascii")
for x in filter(
lambda x: b"cache_metrics_test_fgjkbdfg" in x,
generate_latest(REGISTRY).split(b"\n"),
)
}
self.assertEqual(items["synapse_util_caches_cache_size"], "1.0")
self.assertEqual(items["synapse_util_caches_cache_max_size"], "777.0")