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Merge pull request #2366 from matrix-org/erikj/push_metrics
Add more metrics to push rule evaluation
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commit
d3862812ff
@ -20,6 +20,8 @@ from twisted.internet import defer
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from .push_rule_evaluator import PushRuleEvaluatorForEvent
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from synapse.api.constants import EventTypes, Membership
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from synapse.metrics import get_metrics_for
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from synapse.util.caches import metrics as cache_metrics
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from synapse.util.caches.descriptors import cached
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from synapse.util.async import Linearizer
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@ -31,6 +33,23 @@ logger = logging.getLogger(__name__)
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rules_by_room = {}
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push_metrics = get_metrics_for(__name__)
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push_rules_invalidation_counter = push_metrics.register_counter(
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"push_rules_invalidation_counter"
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)
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push_rules_state_size_counter = push_metrics.register_counter(
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"push_rules_state_size_counter"
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)
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# Measures whether we use the fast path of using state deltas, or if we have to
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# recalculate from scratch
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push_rules_delta_state_cache_metric = cache_metrics.register_cache(
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"cache",
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size_callback=lambda: 0, # Meaningless size, as this isn't a cache that stores values
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cache_name="push_rules_delta_state_cache_metric",
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)
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class BulkPushRuleEvaluator(object):
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"""Calculates the outcome of push rules for an event for all users in the
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@ -41,6 +60,12 @@ class BulkPushRuleEvaluator(object):
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self.hs = hs
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self.store = hs.get_datastore()
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self.room_push_rule_cache_metrics = cache_metrics.register_cache(
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"cache",
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size_callback=lambda: 0, # There's not good value for this
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cache_name="room_push_rule_cache",
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)
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@defer.inlineCallbacks
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def _get_rules_for_event(self, event, context):
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"""This gets the rules for all users in the room at the time of the event,
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@ -78,7 +103,10 @@ class BulkPushRuleEvaluator(object):
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# It's important that RulesForRoom gets added to self._get_rules_for_room.cache
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# before any lookup methods get called on it as otherwise there may be
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# a race if invalidate_all gets called (which assumes its in the cache)
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return RulesForRoom(self.hs, room_id, self._get_rules_for_room.cache)
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return RulesForRoom(
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self.hs, room_id, self._get_rules_for_room.cache,
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self.room_push_rule_cache_metrics,
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)
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@defer.inlineCallbacks
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def action_for_event_by_user(self, event, context):
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@ -161,17 +189,19 @@ class RulesForRoom(object):
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the entire cache for the room.
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"""
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def __init__(self, hs, room_id, rules_for_room_cache):
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def __init__(self, hs, room_id, rules_for_room_cache, room_push_rule_cache_metrics):
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"""
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Args:
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hs (HomeServer)
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room_id (str)
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rules_for_room_cache(Cache): The cache object that caches these
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RoomsForUser objects.
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room_push_rule_cache_metrics (CacheMetric)
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"""
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self.room_id = room_id
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self.is_mine_id = hs.is_mine_id
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self.store = hs.get_datastore()
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self.room_push_rule_cache_metrics = room_push_rule_cache_metrics
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self.linearizer = Linearizer(name="rules_for_room")
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@ -215,13 +245,17 @@ class RulesForRoom(object):
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if state_group and self.state_group == state_group:
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logger.debug("Using cached rules for %r", self.room_id)
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self.room_push_rule_cache_metrics.inc_hits()
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defer.returnValue(self.rules_by_user)
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with (yield self.linearizer.queue(())):
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if state_group and self.state_group == state_group:
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logger.debug("Using cached rules for %r", self.room_id)
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self.room_push_rule_cache_metrics.inc_hits()
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defer.returnValue(self.rules_by_user)
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self.room_push_rule_cache_metrics.inc_misses()
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ret_rules_by_user = {}
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missing_member_event_ids = {}
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if state_group and self.state_group == context.prev_group:
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@ -229,8 +263,13 @@ class RulesForRoom(object):
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# results.
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ret_rules_by_user = self.rules_by_user
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current_state_ids = context.delta_ids
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push_rules_delta_state_cache_metric.inc_hits()
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else:
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current_state_ids = context.current_state_ids
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push_rules_delta_state_cache_metric.inc_misses()
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push_rules_state_size_counter.inc_by(len(current_state_ids))
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logger.debug(
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"Looking for member changes in %r %r", state_group, current_state_ids
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@ -375,6 +414,7 @@ class RulesForRoom(object):
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self.state_group = object()
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self.member_map = {}
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self.rules_by_user = {}
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push_rules_invalidation_counter.inc()
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def update_cache(self, sequence, members, rules_by_user, state_group):
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if sequence == self.sequence:
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