diff options
Diffstat (limited to 'synapse/storage/events.py')
| -rw-r--r-- | synapse/storage/events.py | 62 |
1 files changed, 46 insertions, 16 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py index 85ce6bea1a..ece5e6c41f 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -14,15 +14,19 @@ # See the License for the specific language governing permissions and # limitations under the License. -from synapse.storage.events_worker import EventsWorkerStore +from collections import OrderedDict, deque, namedtuple +from functools import wraps +import logging +import simplejson as json from twisted.internet import defer -from synapse.events import USE_FROZEN_DICTS +from synapse.storage.events_worker import EventsWorkerStore from synapse.util.async import ObservableDeferred +from synapse.util.frozenutils import frozendict_json_encoder from synapse.util.logcontext import ( - PreserveLoggingContext, make_deferred_yieldable + PreserveLoggingContext, make_deferred_yieldable, ) from synapse.util.logutils import log_function from synapse.util.metrics import Measure @@ -30,16 +34,8 @@ from synapse.api.constants import EventTypes from synapse.api.errors import SynapseError from synapse.util.caches.descriptors import cached, cachedInlineCallbacks from synapse.types import get_domain_from_id - -from canonicaljson import encode_canonical_json -from collections import deque, namedtuple, OrderedDict -from functools import wraps - import synapse.metrics -import logging -import simplejson as json - # these are only included to make the type annotations work from synapse.events import EventBase # noqa: F401 from synapse.events.snapshot import EventContext # noqa: F401 @@ -53,12 +49,25 @@ event_counter = metrics.register_counter( "persisted_events_sep", labels=["type", "origin_type", "origin_entity"] ) +# The number of times we are recalculating the current state +state_delta_counter = metrics.register_counter( + "state_delta", +) +# The number of times we are recalculating state when there is only a +# single forward extremity +state_delta_single_event_counter = metrics.register_counter( + "state_delta_single_event", +) +# The number of times we are reculating state when we could have resonably +# calculated the delta when we calculated the state for an event we were +# persisting. +state_delta_reuse_delta_counter = metrics.register_counter( + "state_delta_reuse_delta", +) + def encode_json(json_object): - if USE_FROZEN_DICTS: - return encode_canonical_json(json_object) - else: - return json.dumps(json_object, ensure_ascii=False) + return frozendict_json_encoder.encode(json_object) class _EventPeristenceQueue(object): @@ -368,7 +377,8 @@ class EventsStore(EventsWorkerStore): room_id, ev_ctx_rm, latest_event_ids ) - if new_latest_event_ids == set(latest_event_ids): + latest_event_ids = set(latest_event_ids) + if new_latest_event_ids == latest_event_ids: # No change in extremities, so no change in state continue @@ -389,6 +399,26 @@ class EventsStore(EventsWorkerStore): if all_single_prev_not_state: continue + state_delta_counter.inc() + if len(new_latest_event_ids) == 1: + state_delta_single_event_counter.inc() + + # This is a fairly handwavey check to see if we could + # have guessed what the delta would have been when + # processing one of these events. + # What we're interested in is if the latest extremities + # were the same when we created the event as they are + # now. When this server creates a new event (as opposed + # to receiving it over federation) it will use the + # forward extremities as the prev_events, so we can + # guess this by looking at the prev_events and checking + # if they match the current forward extremities. + for ev, _ in ev_ctx_rm: + prev_event_ids = set(e for e, _ in ev.prev_events) + if latest_event_ids == prev_event_ids: + state_delta_reuse_delta_counter.inc() + break + logger.info( "Calculating state delta for room %s", room_id, ) |