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convert to async: FederationHandler._get_state_for_room

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... and _get_events_from_store_or_dest
This commit is contained in:
Richard van der Hoff 2019-12-10 17:25:18 +00:00
parent e77237b935
commit 4db394a4b3
1 changed files with 21 additions and 21 deletions
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38
synapse/handlers/federation.py
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@ -19,7 +19,7 @@
import itertools import itertools
import logging import logging
from typing import Dict, Iterable, Optional, Sequence, Tuple from typing import Dict, Iterable, List, Optional, Sequence, Tuple
import six import six
from six import iteritems, itervalues from six import iteritems, itervalues
@ -579,30 +579,30 @@ class FederationHandler(BaseHandler):
else: else:
raise raise
@defer.inlineCallbacks
@log_function @log_function
def _get_state_for_room(self, destination, room_id, event_id): async def _get_state_for_room(
self, destination: str, room_id: str, event_id: str
) -> Tuple[List[EventBase], List[EventBase]]:
"""Requests all of the room state at a given event from a remote homeserver. """Requests all of the room state at a given event from a remote homeserver.
Args: Args:
destination (str): The remote homeserver to query for the state. destination:: The remote homeserver to query for the state.
room_id (str): The id of the room we're interested in. room_id: The id of the room we're interested in.
event_id (str): The id of the event we want the state at. event_id: The id of the event we want the state at.
Returns: Returns:
Deferred[Tuple[List[EventBase], List[EventBase]]]:
A list of events in the state, and a list of events in the auth chain A list of events in the state, and a list of events in the auth chain
for the given event. for the given event.
""" """
( (
state_event_ids, state_event_ids,
auth_event_ids, auth_event_ids,
) = yield self.federation_client.get_room_state_ids( ) = await self.federation_client.get_room_state_ids(
destination, room_id, event_id=event_id destination, room_id, event_id=event_id
) )
desired_events = set(state_event_ids + auth_event_ids) desired_events = set(state_event_ids + auth_event_ids)
event_map = yield self._get_events_from_store_or_dest( event_map = await self._get_events_from_store_or_dest(
destination, room_id, desired_events destination, room_id, desired_events
) )
@ -621,20 +621,20 @@ class FederationHandler(BaseHandler):
return pdus, auth_chain return pdus, auth_chain
@defer.inlineCallbacks async def _get_events_from_store_or_dest(
def _get_events_from_store_or_dest(self, destination, room_id, event_ids): self, destination: str, room_id: str, event_ids: Iterable[str]
) -> Dict[str, EventBase]:
"""Fetch events from a remote destination, checking if we already have them. """Fetch events from a remote destination, checking if we already have them.
Args: Args:
destination (str) destination
room_id (str) room_id
event_ids (Iterable[str]) event_ids
Returns: Returns:
Deferred[dict[str, EventBase]]: A deferred resolving to a map map from event_id to event
from event_id to event
""" """
fetched_events = yield self.store.get_events(event_ids, allow_rejected=True) fetched_events = await self.store.get_events(event_ids, allow_rejected=True)
missing_events = set(event_ids) - fetched_events.keys() missing_events = set(event_ids) - fetched_events.keys()
@ -647,7 +647,7 @@ class FederationHandler(BaseHandler):
event_ids, event_ids,
) )
room_version = yield self.store.get_room_version(room_id) room_version = await self.store.get_room_version(room_id)
# XXX 20 requests at once? really? # XXX 20 requests at once? really?
for batch in batch_iter(missing_events, 20): for batch in batch_iter(missing_events, 20):
@ -661,7 +661,7 @@ class FederationHandler(BaseHandler):
for e_id in batch for e_id in batch
] ]
res = yield make_deferred_yieldable( res = await make_deferred_yieldable(
defer.DeferredList(deferreds, consumeErrors=True) defer.DeferredList(deferreds, consumeErrors=True)
) )
for success, result in res: for success, result in res: