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Avoid extra db lookups

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Since we're about to look up the events themselves anyway, we can skip the
extra db queries here.
This commit is contained in:
Richard van der Hoff 2018-08-02 13:23:48 +01:00
parent 0a65450d04
commit 14fa9d4d92
3 changed files with 26 additions and 62 deletions
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20
synapse/storage/events_worker.py
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@ -19,7 +19,7 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.api.errors import NotFoundError
# these are only included to make the type annotations work
from synapse.events import EventBase # noqa: F401
from synapse.events import FrozenEvent
@ -76,7 +76,7 @@ class EventsWorkerStore(SQLBaseStore):
@defer.inlineCallbacks
def get_event(self, event_id, check_redacted=True,
get_prev_content=False, allow_rejected=False,
allow_none=False):
allow_none=False, check_room_id=None):
"""Get an event from the database by event_id.
Args:
@ -87,7 +87,9 @@ class EventsWorkerStore(SQLBaseStore):
include the previous states content in the unsigned field.
allow_rejected (bool): If True return rejected events.
allow_none (bool): If True, return None if no event found, if
False throw an exception.
False throw a NotFoundError
check_room_id (str|None): if not None, check the room of the found event.
If there is a mismatch, behave as per allow_none.
Returns:
Deferred : A FrozenEvent.
@ -99,10 +101,16 @@ class EventsWorkerStore(SQLBaseStore):
allow_rejected=allow_rejected,
)
if not events and not allow_none:
raise SynapseError(404, "Could not find event %s" % (event_id,))
event = events[0] if events else None
defer.returnValue(events[0] if events else None)
if event is not None and check_room_id is not None:
if event.room_id != check_room_id:
event = None
if event is None and not allow_none:
raise NotFoundError("Could not find event %s" % (event_id,))
defer.returnValue(event)
@defer.inlineCallbacks
def get_events(self, event_ids, check_redacted=True,