diff options
Diffstat (limited to 'synapse/storage/databases/main/relations.py')
| -rw-r--r-- | synapse/storage/databases/main/relations.py | 178 |
1 files changed, 172 insertions, 6 deletions
diff --git a/synapse/storage/databases/main/relations.py b/synapse/storage/databases/main/relations.py index 4ff6aed253..2cb5d06c13 100644 --- a/synapse/storage/databases/main/relations.py +++ b/synapse/storage/databases/main/relations.py @@ -13,14 +13,30 @@ # limitations under the License. import logging -from typing import List, Optional, Tuple, Union, cast +from typing import ( + TYPE_CHECKING, + Any, + Dict, + Iterable, + List, + Optional, + Tuple, + Union, + cast, +) import attr +from frozendict import frozendict -from synapse.api.constants import RelationTypes +from synapse.api.constants import EventTypes, RelationTypes from synapse.events import EventBase from synapse.storage._base import SQLBaseStore -from synapse.storage.database import LoggingTransaction, make_in_list_sql_clause +from synapse.storage.database import ( + DatabasePool, + LoggingDatabaseConnection, + LoggingTransaction, + make_in_list_sql_clause, +) from synapse.storage.databases.main.stream import generate_pagination_where_clause from synapse.storage.relations import ( AggregationPaginationToken, @@ -29,10 +45,24 @@ from synapse.storage.relations import ( ) from synapse.util.caches.descriptors import cached +if TYPE_CHECKING: + from synapse.server import HomeServer + logger = logging.getLogger(__name__) class RelationsWorkerStore(SQLBaseStore): + def __init__( + self, + database: DatabasePool, + db_conn: LoggingDatabaseConnection, + hs: "HomeServer", + ): + super().__init__(database, db_conn, hs) + + self._msc1849_enabled = hs.config.experimental.msc1849_enabled + self._msc3440_enabled = hs.config.experimental.msc3440_enabled + @cached(tree=True) async def get_relations_for_event( self, @@ -354,8 +384,7 @@ class RelationsWorkerStore(SQLBaseStore): async def get_thread_summary( self, event_id: str, room_id: str ) -> Tuple[int, Optional[EventBase]]: - """Get the number of threaded replies, the senders of those replies, and - the latest reply (if any) for the given event. + """Get the number of threaded replies and the latest reply (if any) for the given event. Args: event_id: Summarize the thread related to this event ID. @@ -368,7 +397,7 @@ class RelationsWorkerStore(SQLBaseStore): def _get_thread_summary_txn( txn: LoggingTransaction, ) -> Tuple[int, Optional[str]]: - # Fetch the count of threaded events and the latest event ID. + # Fetch the latest event ID in the thread. # TODO Should this only allow m.room.message events. sql = """ SELECT event_id @@ -389,6 +418,7 @@ class RelationsWorkerStore(SQLBaseStore): latest_event_id = row[0] + # Fetch the number of threaded replies. sql = """ SELECT COUNT(event_id) FROM event_relations @@ -413,6 +443,44 @@ class RelationsWorkerStore(SQLBaseStore): return count, latest_event + @cached() + async def get_thread_participated( + self, event_id: str, room_id: str, user_id: str + ) -> bool: + """Get whether the requesting user participated in a thread. + + This is separate from get_thread_summary since that can be cached across + all users while this value is specific to the requeser. + + Args: + event_id: The thread related to this event ID. + room_id: The room the event belongs to. + user_id: The user requesting the summary. + + Returns: + True if the requesting user participated in the thread, otherwise false. + """ + + def _get_thread_summary_txn(txn: LoggingTransaction) -> bool: + # Fetch whether the requester has participated or not. + sql = """ + SELECT 1 + FROM event_relations + INNER JOIN events USING (event_id) + WHERE + relates_to_id = ? + AND room_id = ? + AND relation_type = ? + AND sender = ? + """ + + txn.execute(sql, (event_id, room_id, RelationTypes.THREAD, user_id)) + return bool(txn.fetchone()) + + return await self.db_pool.runInteraction( + "get_thread_summary", _get_thread_summary_txn + ) + async def events_have_relations( self, parent_ids: List[str], @@ -515,6 +583,104 @@ class RelationsWorkerStore(SQLBaseStore): "get_if_user_has_annotated_event", _get_if_user_has_annotated_event ) + async def _get_bundled_aggregation_for_event( + self, event: EventBase, user_id: str + ) -> Optional[Dict[str, Any]]: + """Generate bundled aggregations for an event. + + Note that this does not use a cache, but depends on cached methods. + + Args: + event: The event to calculate bundled aggregations for. + user_id: The user requesting the bundled aggregations. + + Returns: + The bundled aggregations for an event, if bundled aggregations are + enabled and the event can have bundled aggregations. + """ + # State events and redacted events do not get bundled aggregations. + if event.is_state() or event.internal_metadata.is_redacted(): + return None + + # Do not bundle aggregations for an event which represents an edit or an + # annotation. It does not make sense for them to have related events. + relates_to = event.content.get("m.relates_to") + if isinstance(relates_to, (dict, frozendict)): + relation_type = relates_to.get("rel_type") + if relation_type in (RelationTypes.ANNOTATION, RelationTypes.REPLACE): + return None + + event_id = event.event_id + room_id = event.room_id + + # The bundled aggregations to include, a mapping of relation type to a + # type-specific value. Some types include the direct return type here + # while others need more processing during serialization. + aggregations: Dict[str, Any] = {} + + annotations = await self.get_aggregation_groups_for_event(event_id, room_id) + if annotations.chunk: + aggregations[RelationTypes.ANNOTATION] = annotations.to_dict() + + references = await self.get_relations_for_event( + event_id, room_id, RelationTypes.REFERENCE, direction="f" + ) + if references.chunk: + aggregations[RelationTypes.REFERENCE] = references.to_dict() + + edit = None + if event.type == EventTypes.Message: + edit = await self.get_applicable_edit(event_id, room_id) + + if edit: + aggregations[RelationTypes.REPLACE] = edit + + # If this event is the start of a thread, include a summary of the replies. + if self._msc3440_enabled: + thread_count, latest_thread_event = await self.get_thread_summary( + event_id, room_id + ) + participated = await self.get_thread_participated( + event_id, room_id, user_id + ) + if latest_thread_event: + aggregations[RelationTypes.THREAD] = { + "latest_event": latest_thread_event, + "count": thread_count, + "current_user_participated": participated, + } + + # Store the bundled aggregations in the event metadata for later use. + return aggregations + + async def get_bundled_aggregations( + self, + events: Iterable[EventBase], + user_id: str, + ) -> Dict[str, Dict[str, Any]]: + """Generate bundled aggregations for events. + + Args: + events: The iterable of events to calculate bundled aggregations for. + user_id: The user requesting the bundled aggregations. + + Returns: + A map of event ID to the bundled aggregation for the event. Not all + events may have bundled aggregations in the results. + """ + # If bundled aggregations are disabled, nothing to do. + if not self._msc1849_enabled: + return {} + + # TODO Parallelize. + results = {} + for event in events: + event_result = await self._get_bundled_aggregation_for_event(event, user_id) + if event_result is not None: + results[event.event_id] = event_result + + return results + class RelationsStore(RelationsWorkerStore): pass |