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Add a scalar gauge metric on the size of the presence user cachemap

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This commit is contained in:
Paul "LeoNerd" Evans 2015-03-04 16:50:23 +00:00
parent d8caa5454d
commit 59c448f074
1 changed files with 7 additions and 0 deletions
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7
synapse/handlers/presence.py
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@ -21,6 +21,7 @@ from synapse.api.constants import PresenceState
from synapse.util.logutils import log_function from synapse.util.logutils import log_function
from synapse.util.logcontext import PreserveLoggingContext from synapse.util.logcontext import PreserveLoggingContext
from synapse.types import UserID from synapse.types import UserID
import synapse.metrics
from ._base import BaseHandler from ._base import BaseHandler
@ -29,6 +30,8 @@ import logging
logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)
metrics = synapse.metrics.get_metrics_for(__name__)
# TODO(paul): Maybe there's one of these I can steal from somewhere # TODO(paul): Maybe there's one of these I can steal from somewhere
def partition(l, func): def partition(l, func):
@ -133,6 +136,10 @@ class PresenceHandler(BaseHandler):
self._user_cachemap = {} self._user_cachemap = {}
self._user_cachemap_latest_serial = 0 self._user_cachemap_latest_serial = 0
metrics.register_callback("user_cachemap:size",
lambda: len(self._user_cachemap)
)
def _get_or_make_usercache(self, user): def _get_or_make_usercache(self, user):
"""If the cache entry doesn't exist, initialise a new one.""" """If the cache entry doesn't exist, initialise a new one."""
if user not in self._user_cachemap: if user not in self._user_cachemap: