Add missing type hints to synapse.logging.context (#11556)

changelog.d/11556.misc

@@ -0,0 +1 @@
+Add missing type hints to `synapse.logging.context`.

mypy.ini

@@ -167,6 +167,9 @@ disallow_untyped_defs = True
 [mypy-synapse.http.server]
 disallow_untyped_defs = True
 
+[mypy-synapse.logging.context]
+disallow_untyped_defs = True
+
 [mypy-synapse.metrics.*]
 disallow_untyped_defs = True
 

stubs/txredisapi.pyi

@@ -17,20 +17,21 @@
 from typing import Any, List, Optional, Type, Union
 
 from twisted.internet import protocol
+from twisted.internet.defer import Deferred
 
 class RedisProtocol(protocol.Protocol):
     def publish(self, channel: str, message: bytes): ...
-    async def ping(self) -> None: ...
-    async def set(
+    def ping(self) -> "Deferred[None]": ...
+    def set(
         self,
         key: str,
         value: Any,
         expire: Optional[int] = None,
         pexpire: Optional[int] = None,
         only_if_not_exists: bool = False,
         only_if_exists: bool = False,
-    ) -> None: ...
-    async def get(self, key: str) -> Any: ...
+    ) -> "Deferred[None]": ...
+    def get(self, key: str) -> "Deferred[Any]": ...
 
 class SubscriberProtocol(RedisProtocol):
     def __init__(self, *args, **kwargs): ...

synapse/federation/federation_server.py

@@ -30,7 +30,6 @@
 
 from prometheus_client import Counter, Gauge, Histogram
 
-from twisted.internet import defer
 from twisted.internet.abstract import isIPAddress
 from twisted.python import failure
 
@@ -67,7 +66,7 @@
 from synapse.storage.databases.main.lock import Lock
 from synapse.types import JsonDict, get_domain_from_id
 from synapse.util import glob_to_regex, json_decoder, unwrapFirstError
-from synapse.util.async_helpers import Linearizer, concurrently_execute
+from synapse.util.async_helpers import Linearizer, concurrently_execute, gather_results
 from synapse.util.caches.response_cache import ResponseCache
 from synapse.util.stringutils import parse_server_name
 
@@ -360,13 +359,13 @@ async def _handle_incoming_transaction(
         # want to block things like to device messages from reaching clients
         # behind the potentially expensive handling of PDUs.
         pdu_results, _ = await make_deferred_yieldable(
-            defer.gatherResults(
-                [
+            gather_results(
+                (
                     run_in_background(
                         self._handle_pdus_in_txn, origin, transaction, request_time
                     ),
                     run_in_background(self._handle_edus_in_txn, origin, transaction),
-                ],
+                ),
                 consumeErrors=True,
             ).addErrback(unwrapFirstError)
         )

synapse/handlers/federation.py

@@ -360,31 +360,34 @@ async def try_backfill(domains: List[str]) -> bool:
 
         logger.debug("calling resolve_state_groups in _maybe_backfill")
         resolve = preserve_fn(self.state_handler.resolve_state_groups_for_events)
-        states = await make_deferred_yieldable(
+        states_list = await make_deferred_yieldable(
             defer.gatherResults(
                 [resolve(room_id, [e]) for e in event_ids], consumeErrors=True
             )
         )
 
-        # dict[str, dict[tuple, str]], a map from event_id to state map of
-        # event_ids.
-        states = dict(zip(event_ids, [s.state for s in states]))
+        # A map from event_id to state map of event_ids.
+        state_ids: Dict[str, StateMap[str]] = dict(
+            zip(event_ids, [s.state for s in states_list])
+        )
 
         state_map = await self.store.get_events(
-            [e_id for ids in states.values() for e_id in ids.values()],
+            [e_id for ids in state_ids.values() for e_id in ids.values()],
             get_prev_content=False,
         )
-        states = {
+
+        # A map from event_id to state map of events.
+        state_events: Dict[str, StateMap[EventBase]] = {
             key: {
                 k: state_map[e_id]
                 for k, e_id in state_dict.items()
                 if e_id in state_map
             }
-            for key, state_dict in states.items()
+            for key, state_dict in state_ids.items()
         }
 
         for e_id in event_ids:
-            likely_extremeties_domains = get_domains_from_state(states[e_id])
+            likely_extremeties_domains = get_domains_from_state(state_events[e_id])
 
             success = await try_backfill(
                 [

synapse/handlers/initial_sync.py

@@ -13,21 +13,27 @@
 # limitations under the License.
 
 import logging
-from typing import TYPE_CHECKING, List, Optional, Tuple
-
-from twisted.internet import defer
+from typing import TYPE_CHECKING, List, Optional, Tuple, cast
 
 from synapse.api.constants import EduTypes, EventTypes, Membership
 from synapse.api.errors import SynapseError
+from synapse.events import EventBase
 from synapse.events.validator import EventValidator
 from synapse.handlers.presence import format_user_presence_state
 from synapse.handlers.receipts import ReceiptEventSource
 from synapse.logging.context import make_deferred_yieldable, run_in_background
 from synapse.storage.roommember import RoomsForUser
 from synapse.streams.config import PaginationConfig
-from synapse.types import JsonDict, Requester, RoomStreamToken, StreamToken, UserID
+from synapse.types import (
+    JsonDict,
+    Requester,
+    RoomStreamToken,
+    StateMap,
+    StreamToken,
+    UserID,
+)
 from synapse.util import unwrapFirstError
-from synapse.util.async_helpers import concurrently_execute
+from synapse.util.async_helpers import concurrently_execute, gather_results
 from synapse.util.caches.response_cache import ResponseCache
 from synapse.visibility import filter_events_for_client
 
@@ -190,22 +196,21 @@ async def handle_room(event: RoomsForUser) -> None:
                     )
                     deferred_room_state = run_in_background(
                         self.state_store.get_state_for_events, [event.event_id]
-                    )
-                    deferred_room_state.addCallback(
-                        lambda states: states[event.event_id]
+                    ).addCallback(
+                        lambda states: cast(StateMap[EventBase], states[event.event_id])
                     )
 
                 (messages, token), current_state = await make_deferred_yieldable(
-                    defer.gatherResults(
-                        [
+                    gather_results(
+                        (
                             run_in_background(
                                 self.store.get_recent_events_for_room,
                                 event.room_id,
                                 limit=limit,
                                 end_token=room_end_token,
                             ),
                             deferred_room_state,
-                        ]
+                        )
                     )
                 ).addErrback(unwrapFirstError)
 
@@ -454,8 +459,8 @@ async def get_receipts() -> List[JsonDict]:
             return receipts
 
         presence, receipts, (messages, token) = await make_deferred_yieldable(
-            defer.gatherResults(
-                [
+            gather_results(
+                (
                     run_in_background(get_presence),
                     run_in_background(get_receipts),
                     run_in_background(
@@ -464,7 +469,7 @@ async def get_receipts() -> List[JsonDict]:
                         limit=limit,
                         end_token=now_token.room_key,
                     ),
-                ],
+                ),
                 consumeErrors=True,
             ).addErrback(unwrapFirstError)
         )

synapse/handlers/message.py

@@ -21,7 +21,6 @@
 
 from canonicaljson import encode_canonical_json
 
-from twisted.internet import defer
 from twisted.internet.interfaces import IDelayedCall
 
 from synapse import event_auth
@@ -57,7 +56,7 @@
 from synapse.storage.state import StateFilter
 from synapse.types import Requester, RoomAlias, StreamToken, UserID, create_requester
 from synapse.util import json_decoder, json_encoder, log_failure
-from synapse.util.async_helpers import Linearizer, unwrapFirstError
+from synapse.util.async_helpers import Linearizer, gather_results, unwrapFirstError
 from synapse.util.caches.expiringcache import ExpiringCache
 from synapse.util.metrics import measure_func
 from synapse.visibility import filter_events_for_client
@@ -1168,9 +1167,9 @@ async def handle_new_client_event(
 
         # We now persist the event (and update the cache in parallel, since we
         # don't want to block on it).
-        result = await make_deferred_yieldable(
-            defer.gatherResults(
-                [
+        result, _ = await make_deferred_yieldable(
+            gather_results(
+                (
                     run_in_background(
                         self._persist_event,
                         requester=requester,
@@ -1182,12 +1181,12 @@ async def handle_new_client_event(
                     run_in_background(
                         self.cache_joined_hosts_for_event, event, context
                     ).addErrback(log_failure, "cache_joined_hosts_for_event failed"),
-                ],
+                ),
                 consumeErrors=True,
             )
         ).addErrback(unwrapFirstError)
 
-        return result[0]
+        return result
 
     async def _persist_event(
         self,

synapse/http/federation/matrix_federation_agent.py

@@ -25,6 +25,7 @@
 from twisted.internet import defer
 from twisted.internet.endpoints import HostnameEndpoint, wrapClientTLS
 from twisted.internet.interfaces import (
+    IProtocol,
     IProtocolFactory,
     IReactorCore,
     IStreamClientEndpoint,
@@ -309,12 +310,14 @@ def __init__(
 
         self._srv_resolver = srv_resolver
 
-    def connect(self, protocol_factory: IProtocolFactory) -> defer.Deferred:
+    def connect(
+        self, protocol_factory: IProtocolFactory
+    ) -> "defer.Deferred[IProtocol]":
         """Implements IStreamClientEndpoint interface"""
 
         return run_in_background(self._do_connect, protocol_factory)
 
-    async def _do_connect(self, protocol_factory: IProtocolFactory) -> None:
+    async def _do_connect(self, protocol_factory: IProtocolFactory) -> IProtocol:
         first_exception = None
 
         server_list = await self._resolve_server()