diff --git a/changelog.d/8071.misc b/changelog.d/8071.misc
new file mode 100644
index 0000000000..dfe4c03171
--- /dev/null
+++ b/changelog.d/8071.misc
@@ -0,0 +1 @@
+Convert various parts of the codebase to async/await.
diff --git a/synapse/event_auth.py b/synapse/event_auth.py
index c0981eee62..8c907ad596 100644
--- a/synapse/event_auth.py
+++ b/synapse/event_auth.py
@@ -47,7 +47,7 @@ def check(
Args:
room_version_obj: the version of the room
event: the event being checked.
- auth_events (dict: event-key -> event): the existing room state.
+ auth_events: the existing room state.
Raises:
AuthError if the checks fail
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 593932adb7..5b270228e7 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -1777,9 +1777,7 @@ class FederationHandler(BaseHandler):
"""Returns the state at the event. i.e. not including said event.
"""
- event = await self.store.get_event(
- event_id, allow_none=False, check_room_id=room_id
- )
+ event = await self.store.get_event(event_id, check_room_id=room_id)
state_groups = await self.state_store.get_state_groups(room_id, [event_id])
@@ -1805,9 +1803,7 @@ class FederationHandler(BaseHandler):
async def get_state_ids_for_pdu(self, room_id: str, event_id: str) -> List[str]:
"""Returns the state at the event. i.e. not including said event.
"""
- event = await self.store.get_event(
- event_id, allow_none=False, check_room_id=room_id
- )
+ event = await self.store.get_event(event_id, check_room_id=room_id)
state_groups = await self.state_store.get_state_groups_ids(room_id, [event_id])
@@ -2155,9 +2151,9 @@ class FederationHandler(BaseHandler):
auth_types = auth_types_for_event(event)
current_state_ids = [e for k, e in current_state_ids.items() if k in auth_types]
- current_auth_events = await self.store.get_events(current_state_ids)
+ auth_events_map = await self.store.get_events(current_state_ids)
current_auth_events = {
- (e.type, e.state_key): e for e in current_auth_events.values()
+ (e.type, e.state_key): e for e in auth_events_map.values()
}
try:
@@ -2173,9 +2169,7 @@ class FederationHandler(BaseHandler):
if not in_room:
raise AuthError(403, "Host not in room.")
- event = await self.store.get_event(
- event_id, allow_none=False, check_room_id=room_id
- )
+ event = await self.store.get_event(event_id, check_room_id=room_id)
# Just go through and process each event in `remote_auth_chain`. We
# don't want to fall into the trap of `missing` being wrong.
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 532fc30681..b999d91d1a 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -960,7 +960,7 @@ class EventCreationHandler(object):
allow_none=True,
)
- is_admin_redaction = (
+ is_admin_redaction = bool(
original_event and event.sender != original_event.sender
)
@@ -1080,8 +1080,8 @@ class EventCreationHandler(object):
auth_events_ids = self.auth.compute_auth_events(
event, prev_state_ids, for_verification=True
)
- auth_events = await self.store.get_events(auth_events_ids)
- auth_events = {(e.type, e.state_key): e for e in auth_events.values()}
+ auth_events_map = await self.store.get_events(auth_events_ids)
+ auth_events = {(e.type, e.state_key): e for e in auth_events_map.values()}
room_version = await self.store.get_room_version_id(event.room_id)
room_version_obj = KNOWN_ROOM_VERSIONS[room_version]
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 31705cdbdb..aa1ccde211 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -716,7 +716,7 @@ class RoomMemberHandler(object):
guest_access = await self.store.get_event(guest_access_id)
- return (
+ return bool(
guest_access
and guest_access.content
and "guest_access" in guest_access.content
diff --git a/synapse/spam_checker_api/__init__.py b/synapse/spam_checker_api/__init__.py
index 9b78924d96..4d9b13ac04 100644
--- a/synapse/spam_checker_api/__init__.py
+++ b/synapse/spam_checker_api/__init__.py
@@ -51,5 +51,5 @@ class SpamCheckerApi(object):
state_ids = yield self._store.get_filtered_current_state_ids(
room_id=room_id, state_filter=StateFilter.from_types(types)
)
- state = yield self._store.get_events(state_ids.values())
+ state = yield defer.ensureDeferred(self._store.get_events(state_ids.values()))
return state.values()
diff --git a/synapse/state/__init__.py b/synapse/state/__init__.py
index a1d3884667..dba8d91eef 100644
--- a/synapse/state/__init__.py
+++ b/synapse/state/__init__.py
@@ -641,7 +641,7 @@ class StateResolutionStore(object):
allow_rejected (bool): If True return rejected events.
Returns:
- Deferred[dict[str, FrozenEvent]]: Dict from event_id to event.
+ Awaitable[dict[str, FrozenEvent]]: Dict from event_id to event.
"""
return self.store.get_events(
diff --git a/synapse/storage/databases/main/event_federation.py b/synapse/storage/databases/main/event_federation.py
index 431bd76693..4826be630c 100644
--- a/synapse/storage/databases/main/event_federation.py
+++ b/synapse/storage/databases/main/event_federation.py
@@ -30,7 +30,7 @@ logger = logging.getLogger(__name__)
class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBaseStore):
- def get_auth_chain(self, event_ids, include_given=False):
+ async def get_auth_chain(self, event_ids, include_given=False):
"""Get auth events for given event_ids. The events *must* be state events.
Args:
@@ -40,9 +40,10 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
Returns:
list of events
"""
- return self.get_auth_chain_ids(
+ event_ids = await self.get_auth_chain_ids(
event_ids, include_given=include_given
- ).addCallback(self.get_events_as_list)
+ )
+ return await self.get_events_as_list(event_ids)
def get_auth_chain_ids(
self,
@@ -459,7 +460,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
"get_forward_extremeties_for_room", get_forward_extremeties_for_room_txn
)
- def get_backfill_events(self, room_id, event_list, limit):
+ async def get_backfill_events(self, room_id, event_list, limit):
"""Get a list of Events for a given topic that occurred before (and
including) the events in event_list. Return a list of max size `limit`
@@ -469,17 +470,15 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
event_list (list)
limit (int)
"""
- return (
- self.db_pool.runInteraction(
- "get_backfill_events",
- self._get_backfill_events,
- room_id,
- event_list,
- limit,
- )
- .addCallback(self.get_events_as_list)
- .addCallback(lambda l: sorted(l, key=lambda e: -e.depth))
+ event_ids = await self.db_pool.runInteraction(
+ "get_backfill_events",
+ self._get_backfill_events,
+ room_id,
+ event_list,
+ limit,
)
+ events = await self.get_events_as_list(event_ids)
+ return sorted(events, key=lambda e: -e.depth)
def _get_backfill_events(self, txn, room_id, event_list, limit):
logger.debug("_get_backfill_events: %s, %r, %s", room_id, event_list, limit)
@@ -540,8 +539,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
latest_events,
limit,
)
- events = await self.get_events_as_list(ids)
- return events
+ return await self.get_events_as_list(ids)
def _get_missing_events(self, txn, room_id, earliest_events, latest_events, limit):
diff --git a/synapse/storage/databases/main/events_worker.py b/synapse/storage/databases/main/events_worker.py
index 8c63a0dc4d..e3a154a527 100644
--- a/synapse/storage/databases/main/events_worker.py
+++ b/synapse/storage/databases/main/events_worker.py
@@ -19,9 +19,10 @@ import itertools
import logging
import threading
from collections import namedtuple
-from typing import List, Optional, Tuple
+from typing import Dict, Iterable, List, Optional, Tuple, overload
from constantly import NamedConstant, Names
+from typing_extensions import Literal
from twisted.internet import defer
@@ -32,7 +33,7 @@ from synapse.api.room_versions import (
EventFormatVersions,
RoomVersions,
)
-from synapse.events import make_event_from_dict
+from synapse.events import EventBase, make_event_from_dict
from synapse.events.utils import prune_event
from synapse.logging.context import PreserveLoggingContext, current_context
from synapse.metrics.background_process_metrics import run_as_background_process
@@ -42,8 +43,8 @@ from synapse.replication.tcp.streams.events import EventsStream
from synapse.storage._base import SQLBaseStore, db_to_json, make_in_list_sql_clause
from synapse.storage.database import DatabasePool
from synapse.storage.util.id_generators import StreamIdGenerator
-from synapse.types import get_domain_from_id
-from synapse.util.caches.descriptors import Cache, cachedInlineCallbacks
+from synapse.types import Collection, get_domain_from_id
+from synapse.util.caches.descriptors import Cache, cached
from synapse.util.iterutils import batch_iter
from synapse.util.metrics import Measure
@@ -137,8 +138,33 @@ class EventsWorkerStore(SQLBaseStore):
desc="get_received_ts",
)
- @defer.inlineCallbacks
- def get_event(
+ # Inform mypy that if allow_none is False (the default) then get_event
+ # always returns an EventBase.
+ @overload
+ async def get_event(
+ self,
+ event_id: str,
+ redact_behaviour: EventRedactBehaviour = EventRedactBehaviour.REDACT,
+ get_prev_content: bool = False,
+ allow_rejected: bool = False,
+ allow_none: Literal[False] = False,
+ check_room_id: Optional[str] = None,
+ ) -> EventBase:
+ ...
+
+ @overload
+ async def get_event(
+ self,
+ event_id: str,
+ redact_behaviour: EventRedactBehaviour = EventRedactBehaviour.REDACT,
+ get_prev_content: bool = False,
+ allow_rejected: bool = False,
+ allow_none: Literal[True] = False,
+ check_room_id: Optional[str] = None,
+ ) -> Optional[EventBase]:
+ ...
+
+ async def get_event(
self,
event_id: str,
redact_behaviour: EventRedactBehaviour = EventRedactBehaviour.REDACT,
@@ -146,7 +172,7 @@ class EventsWorkerStore(SQLBaseStore):
allow_rejected: bool = False,
allow_none: bool = False,
check_room_id: Optional[str] = None,
- ):
+ ) -> Optional[EventBase]:
"""Get an event from the database by event_id.
Args:
@@ -171,12 +197,12 @@ class EventsWorkerStore(SQLBaseStore):
If there is a mismatch, behave as per allow_none.
Returns:
- Deferred[EventBase|None]
+ The event, or None if the event was not found.
"""
if not isinstance(event_id, str):
raise TypeError("Invalid event event_id %r" % (event_id,))
- events = yield self.get_events_as_list(
+ events = await self.get_events_as_list(
[event_id],
redact_behaviour=redact_behaviour,
get_prev_content=get_prev_content,
@@ -194,14 +220,13 @@ class EventsWorkerStore(SQLBaseStore):
return event
- @defer.inlineCallbacks
- def get_events(
+ async def get_events(
self,
- event_ids: List[str],
+ event_ids: Iterable[str],
redact_behaviour: EventRedactBehaviour = EventRedactBehaviour.REDACT,
get_prev_content: bool = False,
allow_rejected: bool = False,
- ):
+ ) -> Dict[str, EventBase]:
"""Get events from the database
Args:
@@ -220,9 +245,9 @@ class EventsWorkerStore(SQLBaseStore):
omits rejeted events from the response.
Returns:
- Deferred : Dict from event_id to event.
+ A mapping from event_id to event.
"""
- events = yield self.get_events_as_list(
+ events = await self.get_events_as_list(
event_ids,
redact_behaviour=redact_behaviour,
get_prev_content=get_prev_content,
@@ -231,14 +256,13 @@ class EventsWorkerStore(SQLBaseStore):
return {e.event_id: e for e in events}
- @defer.inlineCallbacks
- def get_events_as_list(
+ async def get_events_as_list(
self,
- event_ids: List[str],
+ event_ids: Collection[str],
redact_behaviour: EventRedactBehaviour = EventRedactBehaviour.REDACT,
get_prev_content: bool = False,
allow_rejected: bool = False,
- ):
+ ) -> List[EventBase]:
"""Get events from the database and return in a list in the same order
as given by `event_ids` arg.
@@ -259,8 +283,8 @@ class EventsWorkerStore(SQLBaseStore):
omits rejected events from the response.
Returns:
- Deferred[list[EventBase]]: List of events fetched from the database. The
- events are in the same order as `event_ids` arg.
+ List of events fetched from the database. The events are in the same
+ order as `event_ids` arg.
Note that the returned list may be smaller than the list of event
IDs if not all events could be fetched.
@@ -270,7 +294,7 @@ class EventsWorkerStore(SQLBaseStore):
return []
# there may be duplicates so we cast the list to a set
- event_entry_map = yield self._get_events_from_cache_or_db(
+ event_entry_map = await self._get_events_from_cache_or_db(
set(event_ids), allow_rejected=allow_rejected
)
@@ -305,7 +329,7 @@ class EventsWorkerStore(SQLBaseStore):
continue
redacted_event_id = entry.event.redacts
- event_map = yield self._get_events_from_cache_or_db([redacted_event_id])
+ event_map = await self._get_events_from_cache_or_db([redacted_event_id])
original_event_entry = event_map.get(redacted_event_id)
if not original_event_entry:
# we don't have the redacted event (or it was rejected).
@@ -371,7 +395,7 @@ class EventsWorkerStore(SQLBaseStore):
if get_prev_content:
if "replaces_state" in event.unsigned:
- prev = yield self.get_event(
+ prev = await self.get_event(
event.unsigned["replaces_state"],
get_prev_content=False,
allow_none=True,
@@ -383,8 +407,7 @@ class EventsWorkerStore(SQLBaseStore):
return events
- @defer.inlineCallbacks
- def _get_events_from_cache_or_db(self, event_ids, allow_rejected=False):
+ async def _get_events_from_cache_or_db(self, event_ids, allow_rejected=False):
"""Fetch a bunch of events from the cache or the database.
If events are pulled from the database, they will be cached for future lookups.
@@ -399,7 +422,7 @@ class EventsWorkerStore(SQLBaseStore):
rejected events are omitted from the response.
Returns:
- Deferred[Dict[str, _EventCacheEntry]]:
+ Dict[str, _EventCacheEntry]:
map from event id to result
"""
event_entry_map = self._get_events_from_cache(
@@ -417,7 +440,7 @@ class EventsWorkerStore(SQLBaseStore):
# the events have been redacted, and if so pulling the redaction event out
# of the database to check it.
#
- missing_events = yield self._get_events_from_db(
+ missing_events = await self._get_events_from_db(
missing_events_ids, allow_rejected=allow_rejected
)
@@ -525,8 +548,7 @@ class EventsWorkerStore(SQLBaseStore):
with PreserveLoggingContext():
self.hs.get_reactor().callFromThread(fire, event_list, e)
- @defer.inlineCallbacks
- def _get_events_from_db(self, event_ids, allow_rejected=False):
+ async def _get_events_from_db(self, event_ids, allow_rejected=False):
"""Fetch a bunch of events from the database.
Returned events will be added to the cache for future lookups.
@@ -540,7 +562,7 @@ class EventsWorkerStore(SQLBaseStore):
rejected events are omitted from the response.
Returns:
- Deferred[Dict[str, _EventCacheEntry]]:
+ Dict[str, _EventCacheEntry]:
map from event id to result. May return extra events which
weren't asked for.
"""
@@ -548,7 +570,7 @@ class EventsWorkerStore(SQLBaseStore):
events_to_fetch = event_ids
while events_to_fetch:
- row_map = yield self._enqueue_events(events_to_fetch)
+ row_map = await self._enqueue_events(events_to_fetch)
# we need to recursively fetch any redactions of those events
redaction_ids = set()
@@ -650,8 +672,7 @@ class EventsWorkerStore(SQLBaseStore):
return result_map
- @defer.inlineCallbacks
- def _enqueue_events(self, events):
+ async def _enqueue_events(self, events):
"""Fetches events from the database using the _event_fetch_list. This
allows batch and bulk fetching of events - it allows us to fetch events
without having to create a new transaction for each request for events.
@@ -660,7 +681,7 @@ class EventsWorkerStore(SQLBaseStore):
events (Iterable[str]): events to be fetched.
Returns:
- Deferred[Dict[str, Dict]]: map from event id to row data from the database.
+ Dict[str, Dict]: map from event id to row data from the database.
May contain events that weren't requested.
"""
@@ -683,7 +704,7 @@ class EventsWorkerStore(SQLBaseStore):
logger.debug("Loading %d events: %s", len(events), events)
with PreserveLoggingContext():
- row_map = yield events_d
+ row_map = await events_d
logger.debug("Loaded %d events (%d rows)", len(events), len(row_map))
return row_map
@@ -842,33 +863,29 @@ class EventsWorkerStore(SQLBaseStore):
# no valid redaction found for this event
return None
- @defer.inlineCallbacks
- def have_events_in_timeline(self, event_ids):
+ async def have_events_in_timeline(self, event_ids):
"""Given a list of event ids, check if we have already processed and
stored them as non outliers.
"""
- rows = yield defer.ensureDeferred(
- self.db_pool.simple_select_many_batch(
- table="events",
- retcols=("event_id",),
- column="event_id",
- iterable=list(event_ids),
- keyvalues={"outlier": False},
- desc="have_events_in_timeline",
- )
+ rows = await self.db_pool.simple_select_many_batch(
+ table="events",
+ retcols=("event_id",),
+ column="event_id",
+ iterable=list(event_ids),
+ keyvalues={"outlier": False},
+ desc="have_events_in_timeline",
)
return {r["event_id"] for r in rows}
- @defer.inlineCallbacks
- def have_seen_events(self, event_ids):
+ async def have_seen_events(self, event_ids):
"""Given a list of event ids, check if we have already processed them.
Args:
event_ids (iterable[str]):
Returns:
- Deferred[set[str]]: The events we have already seen.
+ set[str]: The events we have already seen.
"""
results = set()
@@ -884,7 +901,7 @@ class EventsWorkerStore(SQLBaseStore):
# break the input up into chunks of 100
input_iterator = iter(event_ids)
for chunk in iter(lambda: list(itertools.islice(input_iterator, 100)), []):
- yield self.db_pool.runInteraction(
+ await self.db_pool.runInteraction(
"have_seen_events", have_seen_events_txn, chunk
)
return results
@@ -914,8 +931,7 @@ class EventsWorkerStore(SQLBaseStore):
room_id,
)
- @defer.inlineCallbacks
- def get_room_complexity(self, room_id):
+ async def get_room_complexity(self, room_id):
"""
Get a rough approximation of the complexity of the room. This is used by
remote servers to decide whether they wish to join the room or not.
@@ -926,9 +942,9 @@ class EventsWorkerStore(SQLBaseStore):
room_id (str)
Returns:
- Deferred[dict[str:int]] of complexity version to complexity.
+ dict[str:int] of complexity version to complexity.
"""
- state_events = yield self.get_current_state_event_counts(room_id)
+ state_events = await self.get_current_state_event_counts(room_id)
# Call this one "v1", so we can introduce new ones as we want to develop
# it.
@@ -1165,9 +1181,9 @@ class EventsWorkerStore(SQLBaseStore):
to_2, so_2 = await self.get_event_ordering(event_id2)
return (to_1, so_1) > (to_2, so_2)
- @cachedInlineCallbacks(max_entries=5000)
- def get_event_ordering(self, event_id):
- res = yield self.db_pool.simple_select_one(
+ @cached(max_entries=5000)
+ async def get_event_ordering(self, event_id):
+ res = await self.db_pool.simple_select_one(
table="events",
retcols=["topological_ordering", "stream_ordering"],
keyvalues={"event_id": event_id},
diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py
index 4377bddb8c..497f607703 100644
--- a/synapse/storage/databases/main/stream.py
+++ b/synapse/storage/databases/main/stream.py
@@ -379,7 +379,6 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
limit: int = 0,
order: str = "DESC",
) -> Tuple[List[EventBase], str]:
-
"""Get new room events in stream ordering since `from_key`.
Args:
diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py
index 2858d13558..23db821fb7 100644
--- a/tests/server_notices/test_resource_limits_server_notices.py
+++ b/tests/server_notices/test_resource_limits_server_notices.py
@@ -104,7 +104,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
)
self._rlsn._store.get_events = Mock(
- return_value=defer.succeed({"123": mock_event})
+ return_value=make_awaitable({"123": mock_event})
)
self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
# Would be better to check the content, but once == remove blocking event
@@ -122,7 +122,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
)
self._rlsn._store.get_events = Mock(
- return_value=defer.succeed({"123": mock_event})
+ return_value=make_awaitable({"123": mock_event})
)
self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
@@ -217,7 +217,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
)
self._rlsn._store.get_events = Mock(
- return_value=defer.succeed({"123": mock_event})
+ return_value=make_awaitable({"123": mock_event})
)
self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
diff --git a/tests/storage/test_appservice.py b/tests/storage/test_appservice.py
index a425e66f37..17fbde284a 100644
--- a/tests/storage/test_appservice.py
+++ b/tests/storage/test_appservice.py
@@ -31,6 +31,7 @@ from synapse.storage.databases.main.appservice import (
)
from tests import unittest
+from tests.test_utils import make_awaitable
from tests.utils import setup_test_homeserver
@@ -357,7 +358,7 @@ class ApplicationServiceTransactionStoreTestCase(unittest.TestCase):
other_events = [Mock(event_id="e5"), Mock(event_id="e6")]
# we aren't testing store._base stuff here, so mock this out
- self.store.get_events_as_list = Mock(return_value=defer.succeed(events))
+ self.store.get_events_as_list = Mock(return_value=make_awaitable(events))
yield self._insert_txn(self.as_list[1]["id"], 9, other_events)
yield self._insert_txn(service.id, 10, events)
|
