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Add metrics to pushers

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This commit is contained in:
Erik Johnston 2016-02-04 10:15:56 +00:00
parent 77c7ed0e93
commit 13e6262659
3 changed files with 149 additions and 31 deletions
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84
synapse/push/__init__.py
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@ -17,6 +17,8 @@ from twisted.internet import defer
from synapse.streams.config import PaginationConfig
from synapse.types import StreamToken
from synapse.util.logcontext import LoggingContext
from synapse.util.metrics import Measure
import synapse.util.async
import push_rule_evaluator as push_rule_evaluator
@ -27,6 +29,16 @@ import random
logger = logging.getLogger(__name__)
_NEXT_ID = 1
def _get_next_id():
global _NEXT_ID
_id = _NEXT_ID
_NEXT_ID += 1
return _id
# Pushers could now be moved to pull out of the event_push_actions table instead
# of listening on the event stream: this would avoid them having to run the
# rules again.
@ -57,6 +69,8 @@ class Pusher(object):
self.alive = True
self.badge = None
self.name = "Pusher-%d" % (_get_next_id(),)
# The last value of last_active_time that we saw
self.last_last_active_time = 0
self.has_unread = True
@ -86,38 +100,46 @@ class Pusher(object):
@defer.inlineCallbacks
def start(self):
if not self.last_token:
# First-time setup: get a token to start from (we can't
# just start from no token, ie. 'now'
# because we need the result to be reproduceable in case
# we fail to dispatch the push)
config = PaginationConfig(from_token=None, limit='1')
chunk = yield self.evStreamHandler.get_stream(
self.user_id, config, timeout=0, affect_presence=False
)
self.last_token = chunk['end']
self.store.update_pusher_last_token(
self.app_id, self.pushkey, self.user_id, self.last_token
)
logger.info("Pusher %s for user %s starting from token %s",
self.pushkey, self.user_id, self.last_token)
wait = 0
while self.alive:
try:
if wait > 0:
yield synapse.util.async.sleep(wait)
yield self.get_and_dispatch()
wait = 0
except:
if wait == 0:
wait = 1
else:
wait = min(wait * 2, 1800)
logger.exception(
"Exception in pusher loop for pushkey %s. Pausing for %ds",
self.pushkey, wait
with LoggingContext(self.name):
if not self.last_token:
# First-time setup: get a token to start from (we can't
# just start from no token, ie. 'now'
# because we need the result to be reproduceable in case
# we fail to dispatch the push)
config = PaginationConfig(from_token=None, limit='1')
chunk = yield self.evStreamHandler.get_stream(
self.user_id, config, timeout=0, affect_presence=False
)
self.last_token = chunk['end']
self.store.update_pusher_last_token(
self.app_id, self.pushkey, self.user_id, self.last_token
)
logger.info("New pusher %s for user %s starting from token %s",
self.pushkey, self.user_id, self.last_token)
else:
logger.info(
"Old pusher %s for user %s starting",
self.pushkey, self.user_id,
)
wait = 0
while self.alive:
try:
if wait > 0:
yield synapse.util.async.sleep(wait)
with Measure(self.clock, "push"):
yield self.get_and_dispatch()
wait = 0
except:
if wait == 0:
wait = 1
else:
wait = min(wait * 2, 1800)
logger.exception(
"Exception in pusher loop for pushkey %s. Pausing for %ds",
self.pushkey, wait
)
@defer.inlineCallbacks
def get_and_dispatch(self):