mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-26 20:22:22 +00:00
521 lines
18 KiB
Python
521 lines
18 KiB
Python
# Copyright 2019 New Vector Ltd
|
|
#
|
|
# 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.
|
|
|
|
import logging
|
|
from typing import List, Optional, Tuple, Union
|
|
|
|
import attr
|
|
|
|
from synapse.api.constants import 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.databases.main.stream import generate_pagination_where_clause
|
|
from synapse.storage.relations import (
|
|
AggregationPaginationToken,
|
|
PaginationChunk,
|
|
RelationPaginationToken,
|
|
)
|
|
from synapse.util.caches.descriptors import cached
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class RelationsWorkerStore(SQLBaseStore):
|
|
@cached(tree=True)
|
|
async def get_relations_for_event(
|
|
self,
|
|
event_id: str,
|
|
room_id: str,
|
|
relation_type: Optional[str] = None,
|
|
event_type: Optional[str] = None,
|
|
aggregation_key: Optional[str] = None,
|
|
limit: int = 5,
|
|
direction: str = "b",
|
|
from_token: Optional[RelationPaginationToken] = None,
|
|
to_token: Optional[RelationPaginationToken] = None,
|
|
) -> PaginationChunk:
|
|
"""Get a list of relations for an event, ordered by topological ordering.
|
|
|
|
Args:
|
|
event_id: Fetch events that relate to this event ID.
|
|
room_id: The room the event belongs to.
|
|
relation_type: Only fetch events with this relation type, if given.
|
|
event_type: Only fetch events with this event type, if given.
|
|
aggregation_key: Only fetch events with this aggregation key, if given.
|
|
limit: Only fetch the most recent `limit` events.
|
|
direction: Whether to fetch the most recent first (`"b"`) or the
|
|
oldest first (`"f"`).
|
|
from_token: Fetch rows from the given token, or from the start if None.
|
|
to_token: Fetch rows up to the given token, or up to the end if None.
|
|
|
|
Returns:
|
|
List of event IDs that match relations requested. The rows are of
|
|
the form `{"event_id": "..."}`.
|
|
"""
|
|
|
|
where_clause = ["relates_to_id = ?", "room_id = ?"]
|
|
where_args: List[Union[str, int]] = [event_id, room_id]
|
|
|
|
if relation_type is not None:
|
|
where_clause.append("relation_type = ?")
|
|
where_args.append(relation_type)
|
|
|
|
if event_type is not None:
|
|
where_clause.append("type = ?")
|
|
where_args.append(event_type)
|
|
|
|
if aggregation_key:
|
|
where_clause.append("aggregation_key = ?")
|
|
where_args.append(aggregation_key)
|
|
|
|
pagination_clause = generate_pagination_where_clause(
|
|
direction=direction,
|
|
column_names=("topological_ordering", "stream_ordering"),
|
|
from_token=attr.astuple(from_token) if from_token else None, # type: ignore[arg-type]
|
|
to_token=attr.astuple(to_token) if to_token else None, # type: ignore[arg-type]
|
|
engine=self.database_engine,
|
|
)
|
|
|
|
if pagination_clause:
|
|
where_clause.append(pagination_clause)
|
|
|
|
if direction == "b":
|
|
order = "DESC"
|
|
else:
|
|
order = "ASC"
|
|
|
|
sql = """
|
|
SELECT event_id, topological_ordering, stream_ordering
|
|
FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE %s
|
|
ORDER BY topological_ordering %s, stream_ordering %s
|
|
LIMIT ?
|
|
""" % (
|
|
" AND ".join(where_clause),
|
|
order,
|
|
order,
|
|
)
|
|
|
|
def _get_recent_references_for_event_txn(
|
|
txn: LoggingTransaction,
|
|
) -> PaginationChunk:
|
|
txn.execute(sql, where_args + [limit + 1])
|
|
|
|
last_topo_id = None
|
|
last_stream_id = None
|
|
events = []
|
|
for row in txn:
|
|
events.append({"event_id": row[0]})
|
|
last_topo_id = row[1]
|
|
last_stream_id = row[2]
|
|
|
|
next_batch = None
|
|
if len(events) > limit and last_topo_id and last_stream_id:
|
|
next_batch = RelationPaginationToken(last_topo_id, last_stream_id)
|
|
|
|
return PaginationChunk(
|
|
chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
|
|
)
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"get_recent_references_for_event", _get_recent_references_for_event_txn
|
|
)
|
|
|
|
async def event_includes_relation(self, event_id: str) -> bool:
|
|
"""Check if the given event relates to another event.
|
|
|
|
An event has a relation if it has a valid m.relates_to with a rel_type
|
|
and event_id in the content:
|
|
|
|
{
|
|
"content": {
|
|
"m.relates_to": {
|
|
"rel_type": "m.replace",
|
|
"event_id": "$other_event_id"
|
|
}
|
|
}
|
|
}
|
|
|
|
Args:
|
|
event_id: The event to check.
|
|
|
|
Returns:
|
|
True if the event includes a valid relation.
|
|
"""
|
|
|
|
result = await self.db_pool.simple_select_one_onecol(
|
|
table="event_relations",
|
|
keyvalues={"event_id": event_id},
|
|
retcol="event_id",
|
|
allow_none=True,
|
|
desc="event_includes_relation",
|
|
)
|
|
return result is not None
|
|
|
|
async def event_is_target_of_relation(self, parent_id: str) -> bool:
|
|
"""Check if the given event is the target of another event's relation.
|
|
|
|
An event is the target of an event relation if it has a valid
|
|
m.relates_to with a rel_type and event_id pointing to parent_id in the
|
|
content:
|
|
|
|
{
|
|
"content": {
|
|
"m.relates_to": {
|
|
"rel_type": "m.replace",
|
|
"event_id": "$parent_id"
|
|
}
|
|
}
|
|
}
|
|
|
|
Args:
|
|
parent_id: The event to check.
|
|
|
|
Returns:
|
|
True if the event is the target of another event's relation.
|
|
"""
|
|
|
|
result = await self.db_pool.simple_select_one_onecol(
|
|
table="event_relations",
|
|
keyvalues={"relates_to_id": parent_id},
|
|
retcol="event_id",
|
|
allow_none=True,
|
|
desc="event_is_target_of_relation",
|
|
)
|
|
return result is not None
|
|
|
|
@cached(tree=True)
|
|
async def get_aggregation_groups_for_event(
|
|
self,
|
|
event_id: str,
|
|
room_id: str,
|
|
event_type: Optional[str] = None,
|
|
limit: int = 5,
|
|
direction: str = "b",
|
|
from_token: Optional[AggregationPaginationToken] = None,
|
|
to_token: Optional[AggregationPaginationToken] = None,
|
|
) -> PaginationChunk:
|
|
"""Get a list of annotations on the event, grouped by event type and
|
|
aggregation key, sorted by count.
|
|
|
|
This is used e.g. to get the what and how many reactions have happend
|
|
on an event.
|
|
|
|
Args:
|
|
event_id: Fetch events that relate to this event ID.
|
|
room_id: The room the event belongs to.
|
|
event_type: Only fetch events with this event type, if given.
|
|
limit: Only fetch the `limit` groups.
|
|
direction: Whether to fetch the highest count first (`"b"`) or
|
|
the lowest count first (`"f"`).
|
|
from_token: Fetch rows from the given token, or from the start if None.
|
|
to_token: Fetch rows up to the given token, or up to the end if None.
|
|
|
|
Returns:
|
|
List of groups of annotations that match. Each row is a dict with
|
|
`type`, `key` and `count` fields.
|
|
"""
|
|
|
|
where_clause = ["relates_to_id = ?", "room_id = ?", "relation_type = ?"]
|
|
where_args: List[Union[str, int]] = [
|
|
event_id,
|
|
room_id,
|
|
RelationTypes.ANNOTATION,
|
|
]
|
|
|
|
if event_type:
|
|
where_clause.append("type = ?")
|
|
where_args.append(event_type)
|
|
|
|
having_clause = generate_pagination_where_clause(
|
|
direction=direction,
|
|
column_names=("COUNT(*)", "MAX(stream_ordering)"),
|
|
from_token=attr.astuple(from_token) if from_token else None, # type: ignore[arg-type]
|
|
to_token=attr.astuple(to_token) if to_token else None, # type: ignore[arg-type]
|
|
engine=self.database_engine,
|
|
)
|
|
|
|
if direction == "b":
|
|
order = "DESC"
|
|
else:
|
|
order = "ASC"
|
|
|
|
if having_clause:
|
|
having_clause = "HAVING " + having_clause
|
|
else:
|
|
having_clause = ""
|
|
|
|
sql = """
|
|
SELECT type, aggregation_key, COUNT(DISTINCT sender), MAX(stream_ordering)
|
|
FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE {where_clause}
|
|
GROUP BY relation_type, type, aggregation_key
|
|
{having_clause}
|
|
ORDER BY COUNT(*) {order}, MAX(stream_ordering) {order}
|
|
LIMIT ?
|
|
""".format(
|
|
where_clause=" AND ".join(where_clause),
|
|
order=order,
|
|
having_clause=having_clause,
|
|
)
|
|
|
|
def _get_aggregation_groups_for_event_txn(
|
|
txn: LoggingTransaction,
|
|
) -> PaginationChunk:
|
|
txn.execute(sql, where_args + [limit + 1])
|
|
|
|
next_batch = None
|
|
events = []
|
|
for row in txn:
|
|
events.append({"type": row[0], "key": row[1], "count": row[2]})
|
|
next_batch = AggregationPaginationToken(row[2], row[3])
|
|
|
|
if len(events) <= limit:
|
|
next_batch = None
|
|
|
|
return PaginationChunk(
|
|
chunk=list(events[:limit]), next_batch=next_batch, prev_batch=from_token
|
|
)
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"get_aggregation_groups_for_event", _get_aggregation_groups_for_event_txn
|
|
)
|
|
|
|
@cached()
|
|
async def get_applicable_edit(
|
|
self, event_id: str, room_id: str
|
|
) -> Optional[EventBase]:
|
|
"""Get the most recent edit (if any) that has happened for the given
|
|
event.
|
|
|
|
Correctly handles checking whether edits were allowed to happen.
|
|
|
|
Args:
|
|
event_id: The original event ID
|
|
room_id: The original event's room ID
|
|
|
|
Returns:
|
|
The most recent edit, if any.
|
|
"""
|
|
|
|
# We only allow edits for `m.room.message` events that have the same sender
|
|
# and event type. We can't assert these things during regular event auth so
|
|
# we have to do the checks post hoc.
|
|
|
|
# Fetches latest edit that has the same type and sender as the
|
|
# original, and is an `m.room.message`.
|
|
sql = """
|
|
SELECT edit.event_id FROM events AS edit
|
|
INNER JOIN event_relations USING (event_id)
|
|
INNER JOIN events AS original ON
|
|
original.event_id = relates_to_id
|
|
AND edit.type = original.type
|
|
AND edit.sender = original.sender
|
|
WHERE
|
|
relates_to_id = ?
|
|
AND relation_type = ?
|
|
AND edit.room_id = ?
|
|
AND edit.type = 'm.room.message'
|
|
ORDER by edit.origin_server_ts DESC, edit.event_id DESC
|
|
LIMIT 1
|
|
"""
|
|
|
|
def _get_applicable_edit_txn(txn: LoggingTransaction) -> Optional[str]:
|
|
txn.execute(sql, (event_id, RelationTypes.REPLACE, room_id))
|
|
row = txn.fetchone()
|
|
if row:
|
|
return row[0]
|
|
return None
|
|
|
|
edit_id = await self.db_pool.runInteraction(
|
|
"get_applicable_edit", _get_applicable_edit_txn
|
|
)
|
|
|
|
if not edit_id:
|
|
return None
|
|
|
|
return await self.get_event(edit_id, allow_none=True) # type: ignore[attr-defined]
|
|
|
|
@cached()
|
|
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.
|
|
|
|
Args:
|
|
event_id: Summarize the thread related to this event ID.
|
|
room_id: The room the event belongs to.
|
|
|
|
Returns:
|
|
The number of items in the thread and the most recent response, if any.
|
|
"""
|
|
|
|
def _get_thread_summary_txn(
|
|
txn: LoggingTransaction,
|
|
) -> Tuple[int, Optional[str]]:
|
|
# Fetch the count of threaded events and the latest event ID.
|
|
# TODO Should this only allow m.room.message events.
|
|
sql = """
|
|
SELECT event_id
|
|
FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE
|
|
relates_to_id = ?
|
|
AND room_id = ?
|
|
AND relation_type = ?
|
|
ORDER BY topological_ordering DESC, stream_ordering DESC
|
|
LIMIT 1
|
|
"""
|
|
|
|
txn.execute(sql, (event_id, room_id, RelationTypes.THREAD))
|
|
row = txn.fetchone()
|
|
if row is None:
|
|
return 0, None
|
|
|
|
latest_event_id = row[0]
|
|
|
|
sql = """
|
|
SELECT COALESCE(COUNT(event_id), 0)
|
|
FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE
|
|
relates_to_id = ?
|
|
AND room_id = ?
|
|
AND relation_type = ?
|
|
"""
|
|
txn.execute(sql, (event_id, room_id, RelationTypes.THREAD))
|
|
count = txn.fetchone()[0] # type: ignore[index]
|
|
|
|
return count, latest_event_id
|
|
|
|
count, latest_event_id = await self.db_pool.runInteraction(
|
|
"get_thread_summary", _get_thread_summary_txn
|
|
)
|
|
|
|
latest_event = None
|
|
if latest_event_id:
|
|
latest_event = await self.get_event(latest_event_id, allow_none=True) # type: ignore[attr-defined]
|
|
|
|
return count, latest_event
|
|
|
|
async def events_have_relations(
|
|
self,
|
|
parent_ids: List[str],
|
|
relation_senders: Optional[List[str]],
|
|
relation_types: Optional[List[str]],
|
|
) -> List[str]:
|
|
"""Check which events have a relationship from the given senders of the
|
|
given types.
|
|
|
|
Args:
|
|
parent_ids: The events being annotated
|
|
relation_senders: The relation senders to check.
|
|
relation_types: The relation types to check.
|
|
|
|
Returns:
|
|
True if the event has at least one relationship from one of the given senders of the given type.
|
|
"""
|
|
# If no restrictions are given then the event has the required relations.
|
|
if not relation_senders and not relation_types:
|
|
return parent_ids
|
|
|
|
sql = """
|
|
SELECT relates_to_id FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE
|
|
%s;
|
|
"""
|
|
|
|
def _get_if_events_have_relations(txn) -> List[str]:
|
|
clauses: List[str] = []
|
|
clause, args = make_in_list_sql_clause(
|
|
txn.database_engine, "relates_to_id", parent_ids
|
|
)
|
|
clauses.append(clause)
|
|
|
|
if relation_senders:
|
|
clause, temp_args = make_in_list_sql_clause(
|
|
txn.database_engine, "sender", relation_senders
|
|
)
|
|
clauses.append(clause)
|
|
args.extend(temp_args)
|
|
if relation_types:
|
|
clause, temp_args = make_in_list_sql_clause(
|
|
txn.database_engine, "relation_type", relation_types
|
|
)
|
|
clauses.append(clause)
|
|
args.extend(temp_args)
|
|
|
|
txn.execute(sql % " AND ".join(clauses), args)
|
|
|
|
return [row[0] for row in txn]
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"get_if_events_have_relations", _get_if_events_have_relations
|
|
)
|
|
|
|
async def has_user_annotated_event(
|
|
self, parent_id: str, event_type: str, aggregation_key: str, sender: str
|
|
) -> bool:
|
|
"""Check if a user has already annotated an event with the same key
|
|
(e.g. already liked an event).
|
|
|
|
Args:
|
|
parent_id: The event being annotated
|
|
event_type: The event type of the annotation
|
|
aggregation_key: The aggregation key of the annotation
|
|
sender: The sender of the annotation
|
|
|
|
Returns:
|
|
True if the event is already annotated.
|
|
"""
|
|
|
|
sql = """
|
|
SELECT 1 FROM event_relations
|
|
INNER JOIN events USING (event_id)
|
|
WHERE
|
|
relates_to_id = ?
|
|
AND relation_type = ?
|
|
AND type = ?
|
|
AND sender = ?
|
|
AND aggregation_key = ?
|
|
LIMIT 1;
|
|
"""
|
|
|
|
def _get_if_user_has_annotated_event(txn: LoggingTransaction) -> bool:
|
|
txn.execute(
|
|
sql,
|
|
(
|
|
parent_id,
|
|
RelationTypes.ANNOTATION,
|
|
event_type,
|
|
sender,
|
|
aggregation_key,
|
|
),
|
|
)
|
|
|
|
return bool(txn.fetchone())
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"get_if_user_has_annotated_event", _get_if_user_has_annotated_event
|
|
)
|
|
|
|
|
|
class RelationsStore(RelationsWorkerStore):
|
|
pass
|