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Use _ instead of . as a metric namespacing separator, for Prometheus

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This commit is contained in:
Paul "LeoNerd" Evans 2015-03-06 16:18:21 +00:00
parent 0b96bb793e
commit b0cf867319
8 changed files with 34 additions and 18 deletions
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18
synapse/storage/_base.py
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@ -40,7 +40,14 @@ metrics = synapse.metrics.get_metrics_for("synapse.storage")
sql_query_timer = metrics.register_timer("queries", labels=["verb"])
sql_txn_timer = metrics.register_timer("transactions", labels=["desc"])
sql_getevents_timer = metrics.register_timer("get_events", labels=["desc"])
sql_getevents_timer = metrics.register_timer("getEvents", labels=["desc"])
caches_by_name = {}
cache_counter = metrics.register_cache(
"cache",
lambda: {(name,): len(caches_by_name[name]) for name in caches_by_name.keys()},
labels=["name"],
)
# TODO(paul):
@ -62,8 +69,9 @@ def cached(max_entries=1000):
"""
def wrap(orig):
cache = OrderedDict()
name = orig.__name__
counter = metrics.register_cache(orig.__name__, lambda: len(cache))
caches_by_name[name] = cache
def prefill(key, value):
while len(cache) > max_entries:
@ -74,10 +82,10 @@ def cached(max_entries=1000):
@defer.inlineCallbacks
def wrapped(self, key):
if key in cache:
counter.inc_hits()
cache_counter.inc_hits(name)
defer.returnValue(cache[key])
counter.inc_misses()
cache_counter.inc_misses(name)
ret = yield orig(self, key)
prefill(key, ret)
defer.returnValue(ret)
@ -195,7 +203,7 @@ class SQLBaseStore(object):
self._get_event_cache = LruCache(hs.config.event_cache_size)
self._get_event_cache_counter = metrics.register_cache(
"get_event_cache",
"getEventCache",
size_callback=lambda: len(self._get_event_cache),
)