From c5251c6fbd2722d54d33e02021f286053e611efc Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Mon, 5 Oct 2020 09:28:05 -0400 Subject: Do not assume that account data is of the correct form. (#8454) This fixes a bug where `m.ignored_user_list` was assumed to be a dict, leading to odd behavior for users who set it to something else. --- synapse/handlers/sync.py | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'synapse/handlers/sync.py') diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 260ec19b41..a998e6b7f6 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -21,7 +21,7 @@ from typing import TYPE_CHECKING, Any, Dict, FrozenSet, List, Optional, Set, Tup import attr from prometheus_client import Counter -from synapse.api.constants import EventTypes, Membership +from synapse.api.constants import AccountDataTypes, EventTypes, Membership from synapse.api.filtering import FilterCollection from synapse.events import EventBase from synapse.logging.context import current_context @@ -1378,13 +1378,16 @@ class SyncHandler: return set(), set(), set(), set() ignored_account_data = await self.store.get_global_account_data_by_type_for_user( - "m.ignored_user_list", user_id=user_id + AccountDataTypes.IGNORED_USER_LIST, user_id=user_id ) + # If there is ignored users account data and it matches the proper type, + # then use it. + ignored_users = frozenset() # type: FrozenSet[str] if ignored_account_data: - ignored_users = ignored_account_data.get("ignored_users", {}).keys() - else: - ignored_users = frozenset() + ignored_users_data = ignored_account_data.get("ignored_users", {}) + if isinstance(ignored_users_data, dict): + ignored_users = frozenset(ignored_users_data.keys()) if since_token: room_changes = await self._get_rooms_changed( @@ -1478,7 +1481,7 @@ class SyncHandler: return False async def _get_rooms_changed( - self, sync_result_builder: "SyncResultBuilder", ignored_users: Set[str] + self, sync_result_builder: "SyncResultBuilder", ignored_users: FrozenSet[str] ) -> _RoomChanges: """Gets the the changes that have happened since the last sync. """ @@ -1690,7 +1693,7 @@ class SyncHandler: return _RoomChanges(room_entries, invited, newly_joined_rooms, newly_left_rooms) async def _get_all_rooms( - self, sync_result_builder: "SyncResultBuilder", ignored_users: Set[str] + self, sync_result_builder: "SyncResultBuilder", ignored_users: FrozenSet[str] ) -> _RoomChanges: """Returns entries for all rooms for the user. @@ -1764,7 +1767,7 @@ class SyncHandler: async def _generate_room_entry( self, sync_result_builder: "SyncResultBuilder", - ignored_users: Set[str], + ignored_users: FrozenSet[str], room_builder: "RoomSyncResultBuilder", ephemeral: List[JsonDict], tags: Optional[Dict[str, Dict[str, Any]]], -- cgit 1.5.1 From 3cd78bbe9e208d2e93ccebee5d3586ee5f5a5d31 Mon Sep 17 00:00:00 2001 From: Hubert Chathi Date: Tue, 6 Oct 2020 13:26:29 -0400 Subject: Add support for MSC2732: olm fallback keys (#8312) --- changelog.d/8312.feature | 1 + scripts/synapse_port_db | 1 + synapse/handlers/e2e_keys.py | 16 ++++ synapse/handlers/sync.py | 8 ++ synapse/rest/client/v2_alpha/sync.py | 1 + synapse/storage/databases/main/end_to_end_keys.py | 100 ++++++++++++++++++++- .../databases/main/schema/delta/58/11fallback.sql | 24 +++++ tests/handlers/test_e2e_keys.py | 65 ++++++++++++++ 8 files changed, 215 insertions(+), 1 deletion(-) create mode 100644 changelog.d/8312.feature create mode 100644 synapse/storage/databases/main/schema/delta/58/11fallback.sql (limited to 'synapse/handlers/sync.py') diff --git a/changelog.d/8312.feature b/changelog.d/8312.feature new file mode 100644 index 0000000000..222a1b032a --- /dev/null +++ b/changelog.d/8312.feature @@ -0,0 +1 @@ +Add support for olm fallback keys ([MSC2732](https://github.com/matrix-org/matrix-doc/pull/2732)). \ No newline at end of file diff --git a/scripts/synapse_port_db b/scripts/synapse_port_db index 7e12f5440c..2d0b59ab53 100755 --- a/scripts/synapse_port_db +++ b/scripts/synapse_port_db @@ -90,6 +90,7 @@ BOOLEAN_COLUMNS = { "room_stats_state": ["is_federatable"], "local_media_repository": ["safe_from_quarantine"], "users": ["shadow_banned"], + "e2e_fallback_keys_json": ["used"], } diff --git a/synapse/handlers/e2e_keys.py b/synapse/handlers/e2e_keys.py index dd40fd1299..611742ae72 100644 --- a/synapse/handlers/e2e_keys.py +++ b/synapse/handlers/e2e_keys.py @@ -496,6 +496,22 @@ class E2eKeysHandler: log_kv( {"message": "Did not update one_time_keys", "reason": "no keys given"} ) + fallback_keys = keys.get("org.matrix.msc2732.fallback_keys", None) + if fallback_keys and isinstance(fallback_keys, dict): + log_kv( + { + "message": "Updating fallback_keys for device.", + "user_id": user_id, + "device_id": device_id, + } + ) + await self.store.set_e2e_fallback_keys(user_id, device_id, fallback_keys) + elif fallback_keys: + log_kv({"message": "Did not update fallback_keys", "reason": "not a dict"}) + else: + log_kv( + {"message": "Did not update fallback_keys", "reason": "no keys given"} + ) # the device should have been registered already, but it may have been # deleted due to a race with a DELETE request. Or we may be using an diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index a998e6b7f6..dd1f90e359 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -201,6 +201,8 @@ class SyncResult: device_lists: List of user_ids whose devices have changed device_one_time_keys_count: Dict of algorithm to count for one time keys for this device + device_unused_fallback_key_types: List of key types that have an unused fallback + key groups: Group updates, if any """ @@ -213,6 +215,7 @@ class SyncResult: to_device = attr.ib(type=List[JsonDict]) device_lists = attr.ib(type=DeviceLists) device_one_time_keys_count = attr.ib(type=JsonDict) + device_unused_fallback_key_types = attr.ib(type=List[str]) groups = attr.ib(type=Optional[GroupsSyncResult]) def __bool__(self) -> bool: @@ -1014,10 +1017,14 @@ class SyncHandler: logger.debug("Fetching OTK data") device_id = sync_config.device_id one_time_key_counts = {} # type: JsonDict + unused_fallback_key_types = [] # type: List[str] if device_id: one_time_key_counts = await self.store.count_e2e_one_time_keys( user_id, device_id ) + unused_fallback_key_types = await self.store.get_e2e_unused_fallback_key_types( + user_id, device_id + ) logger.debug("Fetching group data") await self._generate_sync_entry_for_groups(sync_result_builder) @@ -1041,6 +1048,7 @@ class SyncHandler: device_lists=device_lists, groups=sync_result_builder.groups, device_one_time_keys_count=one_time_key_counts, + device_unused_fallback_key_types=unused_fallback_key_types, next_batch=sync_result_builder.now_token, ) diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py index 6779df952f..2b84eb89c0 100644 --- a/synapse/rest/client/v2_alpha/sync.py +++ b/synapse/rest/client/v2_alpha/sync.py @@ -236,6 +236,7 @@ class SyncRestServlet(RestServlet): "leave": sync_result.groups.leave, }, "device_one_time_keys_count": sync_result.device_one_time_keys_count, + "org.matrix.msc2732.device_unused_fallback_key_types": sync_result.device_unused_fallback_key_types, "next_batch": await sync_result.next_batch.to_string(self.store), } diff --git a/synapse/storage/databases/main/end_to_end_keys.py b/synapse/storage/databases/main/end_to_end_keys.py index 22e1ed15d0..8c97f2af5c 100644 --- a/synapse/storage/databases/main/end_to_end_keys.py +++ b/synapse/storage/databases/main/end_to_end_keys.py @@ -367,6 +367,57 @@ class EndToEndKeyWorkerStore(SQLBaseStore): "count_e2e_one_time_keys", _count_e2e_one_time_keys ) + async def set_e2e_fallback_keys( + self, user_id: str, device_id: str, fallback_keys: JsonDict + ) -> None: + """Set the user's e2e fallback keys. + + Args: + user_id: the user whose keys are being set + device_id: the device whose keys are being set + fallback_keys: the keys to set. This is a map from key ID (which is + of the form "algorithm:id") to key data. + """ + # fallback_keys will usually only have one item in it, so using a for + # loop (as opposed to calling simple_upsert_many_txn) won't be too bad + # FIXME: make sure that only one key per algorithm is uploaded + for key_id, fallback_key in fallback_keys.items(): + algorithm, key_id = key_id.split(":", 1) + await self.db_pool.simple_upsert( + "e2e_fallback_keys_json", + keyvalues={ + "user_id": user_id, + "device_id": device_id, + "algorithm": algorithm, + }, + values={ + "key_id": key_id, + "key_json": json_encoder.encode(fallback_key), + "used": False, + }, + desc="set_e2e_fallback_key", + ) + + @cached(max_entries=10000) + async def get_e2e_unused_fallback_key_types( + self, user_id: str, device_id: str + ) -> List[str]: + """Returns the fallback key types that have an unused key. + + Args: + user_id: the user whose keys are being queried + device_id: the device whose keys are being queried + + Returns: + a list of key types + """ + return await self.db_pool.simple_select_onecol( + "e2e_fallback_keys_json", + keyvalues={"user_id": user_id, "device_id": device_id, "used": False}, + retcol="algorithm", + desc="get_e2e_unused_fallback_key_types", + ) + async def get_e2e_cross_signing_key( self, user_id: str, key_type: str, from_user_id: Optional[str] = None ) -> Optional[dict]: @@ -701,15 +752,37 @@ class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore): " WHERE user_id = ? AND device_id = ? AND algorithm = ?" " LIMIT 1" ) + fallback_sql = ( + "SELECT key_id, key_json, used FROM e2e_fallback_keys_json" + " WHERE user_id = ? AND device_id = ? AND algorithm = ?" + " LIMIT 1" + ) result = {} delete = [] + used_fallbacks = [] for user_id, device_id, algorithm in query_list: user_result = result.setdefault(user_id, {}) device_result = user_result.setdefault(device_id, {}) txn.execute(sql, (user_id, device_id, algorithm)) - for key_id, key_json in txn: + otk_row = txn.fetchone() + if otk_row is not None: + key_id, key_json = otk_row device_result[algorithm + ":" + key_id] = key_json delete.append((user_id, device_id, algorithm, key_id)) + else: + # no one-time key available, so see if there's a fallback + # key + txn.execute(fallback_sql, (user_id, device_id, algorithm)) + fallback_row = txn.fetchone() + if fallback_row is not None: + key_id, key_json, used = fallback_row + device_result[algorithm + ":" + key_id] = key_json + if not used: + used_fallbacks.append( + (user_id, device_id, algorithm, key_id) + ) + + # drop any one-time keys that were claimed sql = ( "DELETE FROM e2e_one_time_keys_json" " WHERE user_id = ? AND device_id = ? AND algorithm = ?" @@ -726,6 +799,23 @@ class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore): self._invalidate_cache_and_stream( txn, self.count_e2e_one_time_keys, (user_id, device_id) ) + # mark fallback keys as used + for user_id, device_id, algorithm, key_id in used_fallbacks: + self.db_pool.simple_update_txn( + txn, + "e2e_fallback_keys_json", + { + "user_id": user_id, + "device_id": device_id, + "algorithm": algorithm, + "key_id": key_id, + }, + {"used": True}, + ) + self._invalidate_cache_and_stream( + txn, self.get_e2e_unused_fallback_key_types, (user_id, device_id) + ) + return result return await self.db_pool.runInteraction( @@ -754,6 +844,14 @@ class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore): self._invalidate_cache_and_stream( txn, self.count_e2e_one_time_keys, (user_id, device_id) ) + self.db_pool.simple_delete_txn( + txn, + table="e2e_fallback_keys_json", + keyvalues={"user_id": user_id, "device_id": device_id}, + ) + self._invalidate_cache_and_stream( + txn, self.get_e2e_unused_fallback_key_types, (user_id, device_id) + ) await self.db_pool.runInteraction( "delete_e2e_keys_by_device", delete_e2e_keys_by_device_txn diff --git a/synapse/storage/databases/main/schema/delta/58/11fallback.sql b/synapse/storage/databases/main/schema/delta/58/11fallback.sql new file mode 100644 index 0000000000..4ed981dbf8 --- /dev/null +++ b/synapse/storage/databases/main/schema/delta/58/11fallback.sql @@ -0,0 +1,24 @@ +/* Copyright 2020 The Matrix.org Foundation C.I.C + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +CREATE TABLE IF NOT EXISTS e2e_fallback_keys_json ( + user_id TEXT NOT NULL, -- The user this fallback key is for. + device_id TEXT NOT NULL, -- The device this fallback key is for. + algorithm TEXT NOT NULL, -- Which algorithm this fallback key is for. + key_id TEXT NOT NULL, -- An id for suppressing duplicate uploads. + key_json TEXT NOT NULL, -- The key as a JSON blob. + used BOOLEAN NOT NULL DEFAULT FALSE, -- Whether the key has been used or not. + CONSTRAINT e2e_fallback_keys_json_uniqueness UNIQUE (user_id, device_id, algorithm) +); diff --git a/tests/handlers/test_e2e_keys.py b/tests/handlers/test_e2e_keys.py index 366dcfb670..4e9e3dcbc2 100644 --- a/tests/handlers/test_e2e_keys.py +++ b/tests/handlers/test_e2e_keys.py @@ -171,6 +171,71 @@ class E2eKeysHandlerTestCase(unittest.TestCase): }, ) + @defer.inlineCallbacks + def test_fallback_key(self): + local_user = "@boris:" + self.hs.hostname + device_id = "xyz" + fallback_key = {"alg1:k1": "key1"} + otk = {"alg1:k2": "key2"} + + yield defer.ensureDeferred( + self.handler.upload_keys_for_user( + local_user, + device_id, + {"org.matrix.msc2732.fallback_keys": fallback_key}, + ) + ) + + # claiming an OTK when no OTKs are available should return the fallback + # key + res = yield defer.ensureDeferred( + self.handler.claim_one_time_keys( + {"one_time_keys": {local_user: {device_id: "alg1"}}}, timeout=None + ) + ) + self.assertEqual( + res, + {"failures": {}, "one_time_keys": {local_user: {device_id: fallback_key}}}, + ) + + # claiming an OTK again should return the same fallback key + res = yield defer.ensureDeferred( + self.handler.claim_one_time_keys( + {"one_time_keys": {local_user: {device_id: "alg1"}}}, timeout=None + ) + ) + self.assertEqual( + res, + {"failures": {}, "one_time_keys": {local_user: {device_id: fallback_key}}}, + ) + + # if the user uploads a one-time key, the next claim should fetch the + # one-time key, and then go back to the fallback + yield defer.ensureDeferred( + self.handler.upload_keys_for_user( + local_user, device_id, {"one_time_keys": otk} + ) + ) + + res = yield defer.ensureDeferred( + self.handler.claim_one_time_keys( + {"one_time_keys": {local_user: {device_id: "alg1"}}}, timeout=None + ) + ) + self.assertEqual( + res, {"failures": {}, "one_time_keys": {local_user: {device_id: otk}}}, + ) + + res = yield defer.ensureDeferred( + self.handler.claim_one_time_keys( + {"one_time_keys": {local_user: {device_id: "alg1"}}}, timeout=None + ) + ) + self.assertEqual( + res, + {"failures": {}, "one_time_keys": {local_user: {device_id: fallback_key}}}, + ) + @defer.inlineCallbacks def test_replace_master_key(self): """uploading a new signing key should make the old signing key unavailable""" -- cgit 1.5.1 From 9ca6341969b8b84c0c79a29fb914d1d8dbb3e320 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Wed, 7 Oct 2020 13:49:40 +0100 Subject: Fix returning incorrect prev_batch token in incremental sync (#8486) --- changelog.d/8486.bugfix | 1 + synapse/handlers/sync.py | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-) create mode 100644 changelog.d/8486.bugfix (limited to 'synapse/handlers/sync.py') diff --git a/changelog.d/8486.bugfix b/changelog.d/8486.bugfix new file mode 100644 index 0000000000..63fc091ba6 --- /dev/null +++ b/changelog.d/8486.bugfix @@ -0,0 +1 @@ +Fix incremental sync returning an incorrect `prev_batch` token in timeline section, which when used to paginate returned events that were included in the incremental sync. Broken since v0.16.0. diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index dd1f90e359..6fb8332f93 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -460,8 +460,13 @@ class SyncHandler: recents = [] if not limited or block_all_timeline: + prev_batch_token = now_token + if recents: + room_key = recents[0].internal_metadata.before + prev_batch_token = now_token.copy_and_replace("room_key", room_key) + return TimelineBatch( - events=recents, prev_batch=now_token, limited=False + events=recents, prev_batch=prev_batch_token, limited=False ) filtering_factor = 2 -- cgit 1.5.1 From 1781bbe319ce24e8e468f0422519dc5823d8d420 Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Fri, 9 Oct 2020 11:35:11 -0400 Subject: Add type hints to response cache. (#8507) --- changelog.d/8507.misc | 1 + mypy.ini | 1 + synapse/appservice/api.py | 4 +-- synapse/federation/federation_server.py | 8 ++++-- synapse/handlers/initial_sync.py | 10 ++++--- synapse/handlers/room.py | 2 +- synapse/handlers/sync.py | 4 ++- synapse/replication/http/_base.py | 2 +- synapse/util/caches/response_cache.py | 50 ++++++++++++++++++--------------- 9 files changed, 48 insertions(+), 34 deletions(-) create mode 100644 changelog.d/8507.misc (limited to 'synapse/handlers/sync.py') diff --git a/changelog.d/8507.misc b/changelog.d/8507.misc new file mode 100644 index 0000000000..724da8a996 --- /dev/null +++ b/changelog.d/8507.misc @@ -0,0 +1 @@ + Add type hints to various parts of the code base. diff --git a/mypy.ini b/mypy.ini index 19b60f7534..f08fe992a4 100644 --- a/mypy.ini +++ b/mypy.ini @@ -65,6 +65,7 @@ files = synapse/types.py, synapse/util/async_helpers.py, synapse/util/caches/descriptors.py, + synapse/util/caches/response_cache.py, synapse/util/caches/stream_change_cache.py, synapse/util/metrics.py, tests/replication, diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py index c526c28b93..e8f0793795 100644 --- a/synapse/appservice/api.py +++ b/synapse/appservice/api.py @@ -14,7 +14,7 @@ # limitations under the License. import logging import urllib -from typing import TYPE_CHECKING, Optional +from typing import TYPE_CHECKING, Optional, Tuple from prometheus_client import Counter @@ -93,7 +93,7 @@ class ApplicationServiceApi(SimpleHttpClient): self.protocol_meta_cache = ResponseCache( hs, "as_protocol_meta", timeout_ms=HOUR_IN_MS - ) + ) # type: ResponseCache[Tuple[str, str]] async def query_user(self, service, user_id): if service.url is None: diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index e8039e244c..23278e36b7 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -116,7 +116,7 @@ class FederationServer(FederationBase): # We cache results for transaction with the same ID self._transaction_resp_cache = ResponseCache( hs, "fed_txn_handler", timeout_ms=30000 - ) + ) # type: ResponseCache[Tuple[str, str]] self.transaction_actions = TransactionActions(self.store) @@ -124,10 +124,12 @@ class FederationServer(FederationBase): # We cache responses to state queries, as they take a while and often # come in waves. - self._state_resp_cache = ResponseCache(hs, "state_resp", timeout_ms=30000) + self._state_resp_cache = ResponseCache( + hs, "state_resp", timeout_ms=30000 + ) # type: ResponseCache[Tuple[str, str]] self._state_ids_resp_cache = ResponseCache( hs, "state_ids_resp", timeout_ms=30000 - ) + ) # type: ResponseCache[Tuple[str, str]] self._federation_metrics_domains = ( hs.get_config().federation.federation_metrics_domains diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py index 39a85801c1..98075f48d2 100644 --- a/synapse/handlers/initial_sync.py +++ b/synapse/handlers/initial_sync.py @@ -14,7 +14,7 @@ # limitations under the License. import logging -from typing import TYPE_CHECKING +from typing import TYPE_CHECKING, Optional, Tuple from twisted.internet import defer @@ -47,12 +47,14 @@ class InitialSyncHandler(BaseHandler): self.state = hs.get_state_handler() self.clock = hs.get_clock() self.validator = EventValidator() - self.snapshot_cache = ResponseCache(hs, "initial_sync_cache") + self.snapshot_cache = ResponseCache( + hs, "initial_sync_cache" + ) # type: ResponseCache[Tuple[str, Optional[StreamToken], Optional[StreamToken], str, Optional[int], bool, bool]] self._event_serializer = hs.get_event_client_serializer() self.storage = hs.get_storage() self.state_store = self.storage.state - def snapshot_all_rooms( + async def snapshot_all_rooms( self, user_id: str, pagin_config: PaginationConfig, @@ -84,7 +86,7 @@ class InitialSyncHandler(BaseHandler): include_archived, ) - return self.snapshot_cache.wrap( + return await self.snapshot_cache.wrap( key, self._snapshot_all_rooms, user_id, diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 1d04d41e98..93ed51063a 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -120,7 +120,7 @@ class RoomCreationHandler(BaseHandler): # subsequent requests self._upgrade_response_cache = ResponseCache( hs, "room_upgrade", timeout_ms=FIVE_MINUTES_IN_MS - ) + ) # type: ResponseCache[Tuple[str, str]] self._server_notices_mxid = hs.config.server_notices_mxid self.third_party_event_rules = hs.get_third_party_event_rules() diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 6fb8332f93..a306631094 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -243,7 +243,9 @@ class SyncHandler: self.presence_handler = hs.get_presence_handler() self.event_sources = hs.get_event_sources() self.clock = hs.get_clock() - self.response_cache = ResponseCache(hs, "sync") + self.response_cache = ResponseCache( + hs, "sync" + ) # type: ResponseCache[Tuple[Any, ...]] self.state = hs.get_state_handler() self.auth = hs.get_auth() self.storage = hs.get_storage() diff --git a/synapse/replication/http/_base.py b/synapse/replication/http/_base.py index 64edadb624..2b3972cb14 100644 --- a/synapse/replication/http/_base.py +++ b/synapse/replication/http/_base.py @@ -92,7 +92,7 @@ class ReplicationEndpoint(metaclass=abc.ABCMeta): if self.CACHE: self.response_cache = ResponseCache( hs, "repl." + self.NAME, timeout_ms=30 * 60 * 1000 - ) + ) # type: ResponseCache[str] # We reserve `instance_name` as a parameter to sending requests, so we # assert here that sub classes don't try and use the name. diff --git a/synapse/util/caches/response_cache.py b/synapse/util/caches/response_cache.py index df1a721add..32228f42ee 100644 --- a/synapse/util/caches/response_cache.py +++ b/synapse/util/caches/response_cache.py @@ -13,6 +13,7 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging +from typing import TYPE_CHECKING, Any, Callable, Dict, Generic, Optional, TypeVar from twisted.internet import defer @@ -20,10 +21,15 @@ from synapse.logging.context import make_deferred_yieldable, run_in_background from synapse.util.async_helpers import ObservableDeferred from synapse.util.caches import register_cache +if TYPE_CHECKING: + from synapse.app.homeserver import HomeServer + logger = logging.getLogger(__name__) +T = TypeVar("T") + -class ResponseCache: +class ResponseCache(Generic[T]): """ This caches a deferred response. Until the deferred completes it will be returned from the cache. This means that if the client retries the request @@ -31,8 +37,9 @@ class ResponseCache: used rather than trying to compute a new response. """ - def __init__(self, hs, name, timeout_ms=0): - self.pending_result_cache = {} # Requests that haven't finished yet. + def __init__(self, hs: "HomeServer", name: str, timeout_ms: float = 0): + # Requests that haven't finished yet. + self.pending_result_cache = {} # type: Dict[T, ObservableDeferred] self.clock = hs.get_clock() self.timeout_sec = timeout_ms / 1000.0 @@ -40,13 +47,13 @@ class ResponseCache: self._name = name self._metrics = register_cache("response_cache", name, self, resizable=False) - def size(self): + def size(self) -> int: return len(self.pending_result_cache) - def __len__(self): + def __len__(self) -> int: return self.size() - def get(self, key): + def get(self, key: T) -> Optional[defer.Deferred]: """Look up the given key. Can return either a new Deferred (which also doesn't follow the synapse @@ -58,12 +65,11 @@ class ResponseCache: from an absent cache entry. Args: - key (hashable): + key: key to get/set in the cache Returns: - twisted.internet.defer.Deferred|None|E: None if there is no entry - for this key; otherwise either a deferred result or the result - itself. + None if there is no entry for this key; otherwise a deferred which + resolves to the result. """ result = self.pending_result_cache.get(key) if result is not None: @@ -73,7 +79,7 @@ class ResponseCache: self._metrics.inc_misses() return None - def set(self, key, deferred): + def set(self, key: T, deferred: defer.Deferred) -> defer.Deferred: """Set the entry for the given key to the given deferred. *deferred* should run its callbacks in the sentinel logcontext (ie, @@ -85,12 +91,11 @@ class ResponseCache: result. You will probably want to make_deferred_yieldable the result. Args: - key (hashable): - deferred (twisted.internet.defer.Deferred[T): + key: key to get/set in the cache + deferred: The deferred which resolves to the result. Returns: - twisted.internet.defer.Deferred[T]|T: a new deferred, or the actual - result. + A new deferred which resolves to the actual result. """ result = ObservableDeferred(deferred, consumeErrors=True) self.pending_result_cache[key] = result @@ -107,7 +112,9 @@ class ResponseCache: result.addBoth(remove) return result.observe() - def wrap(self, key, callback, *args, **kwargs): + def wrap( + self, key: T, callback: "Callable[..., Any]", *args: Any, **kwargs: Any + ) -> defer.Deferred: """Wrap together a *get* and *set* call, taking care of logcontexts First looks up the key in the cache, and if it is present makes it @@ -118,21 +125,20 @@ class ResponseCache: Example usage: - @defer.inlineCallbacks - def handle_request(request): + async def handle_request(request): # etc return result - result = yield response_cache.wrap( + result = await response_cache.wrap( key, handle_request, request, ) Args: - key (hashable): key to get/set in the cache + key: key to get/set in the cache - callback (callable): function to call if the key is not found in + callback: function to call if the key is not found in the cache *args: positional parameters to pass to the callback, if it is used @@ -140,7 +146,7 @@ class ResponseCache: **kwargs: named parameters to pass to the callback, if it is used Returns: - twisted.internet.defer.Deferred: yieldable result + Deferred which resolves to the result """ result = self.get(key) if not result: -- cgit 1.5.1