mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-26 12:16:12 +00:00
![Patrick Cloke](/assets/img/avatar_default.png)
This is allowed per MSC2675, although the original implementation did not allow for it and would return an empty chunk / not bundle aggregations. The main thing to improve is that the various caches get cleared properly when an event is redacted, and that edits must not leak if the original event is redacted (as that would presumably leak something similar to the original event content).
318 lines
11 KiB
Python
318 lines
11 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.
|
|
|
|
"""This class implements the proposed relation APIs from MSC 1849.
|
|
|
|
Since the MSC has not been approved all APIs here are unstable and may change at
|
|
any time to reflect changes in the MSC.
|
|
"""
|
|
|
|
import logging
|
|
from typing import TYPE_CHECKING, Optional, Tuple
|
|
|
|
from synapse.api.constants import RelationTypes
|
|
from synapse.api.errors import SynapseError
|
|
from synapse.http.server import HttpServer
|
|
from synapse.http.servlet import RestServlet, parse_integer, parse_string
|
|
from synapse.http.site import SynapseRequest
|
|
from synapse.rest.client._base import client_patterns
|
|
from synapse.storage.relations import AggregationPaginationToken
|
|
from synapse.types import JsonDict, StreamToken
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.server import HomeServer
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class RelationPaginationServlet(RestServlet):
|
|
"""API to paginate relations on an event by topological ordering, optionally
|
|
filtered by relation type and event type.
|
|
"""
|
|
|
|
PATTERNS = client_patterns(
|
|
"/rooms/(?P<room_id>[^/]*)/relations/(?P<parent_id>[^/]*)"
|
|
"(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
|
|
releases=(),
|
|
)
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastores().main
|
|
self.clock = hs.get_clock()
|
|
self._event_serializer = hs.get_event_client_serializer()
|
|
self.event_handler = hs.get_event_handler()
|
|
|
|
async def on_GET(
|
|
self,
|
|
request: SynapseRequest,
|
|
room_id: str,
|
|
parent_id: str,
|
|
relation_type: Optional[str] = None,
|
|
event_type: Optional[str] = None,
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request, allow_guest=True)
|
|
|
|
await self.auth.check_user_in_room_or_world_readable(
|
|
room_id, requester.user.to_string(), allow_departed_users=True
|
|
)
|
|
|
|
# This gets the original event and checks that a) the event exists and
|
|
# b) the user is allowed to view it.
|
|
event = await self.event_handler.get_event(requester.user, room_id, parent_id)
|
|
if event is None:
|
|
raise SynapseError(404, "Unknown parent event.")
|
|
|
|
limit = parse_integer(request, "limit", default=5)
|
|
direction = parse_string(
|
|
request, "org.matrix.msc3715.dir", default="b", allowed_values=["f", "b"]
|
|
)
|
|
from_token_str = parse_string(request, "from")
|
|
to_token_str = parse_string(request, "to")
|
|
|
|
# Return the relations
|
|
from_token = None
|
|
if from_token_str:
|
|
from_token = await StreamToken.from_string(self.store, from_token_str)
|
|
to_token = None
|
|
if to_token_str:
|
|
to_token = await StreamToken.from_string(self.store, to_token_str)
|
|
|
|
pagination_chunk = await self.store.get_relations_for_event(
|
|
event_id=parent_id,
|
|
event=event,
|
|
room_id=room_id,
|
|
relation_type=relation_type,
|
|
event_type=event_type,
|
|
limit=limit,
|
|
direction=direction,
|
|
from_token=from_token,
|
|
to_token=to_token,
|
|
)
|
|
|
|
events = await self.store.get_events_as_list(
|
|
[c["event_id"] for c in pagination_chunk.chunk]
|
|
)
|
|
|
|
now = self.clock.time_msec()
|
|
# Do not bundle aggregations when retrieving the original event because
|
|
# we want the content before relations are applied to it.
|
|
original_event = self._event_serializer.serialize_event(
|
|
event, now, bundle_aggregations=None
|
|
)
|
|
# The relations returned for the requested event do include their
|
|
# bundled aggregations.
|
|
aggregations = await self.store.get_bundled_aggregations(
|
|
events, requester.user.to_string()
|
|
)
|
|
serialized_events = self._event_serializer.serialize_events(
|
|
events, now, bundle_aggregations=aggregations
|
|
)
|
|
|
|
return_value = await pagination_chunk.to_dict(self.store)
|
|
return_value["chunk"] = serialized_events
|
|
return_value["original_event"] = original_event
|
|
|
|
return 200, return_value
|
|
|
|
|
|
class RelationAggregationPaginationServlet(RestServlet):
|
|
"""API to paginate aggregation groups of relations, e.g. paginate the
|
|
types and counts of the reactions on the events.
|
|
|
|
Example request and response:
|
|
|
|
GET /rooms/{room_id}/aggregations/{parent_id}
|
|
|
|
{
|
|
chunk: [
|
|
{
|
|
"type": "m.reaction",
|
|
"key": "👍",
|
|
"count": 3
|
|
}
|
|
]
|
|
}
|
|
"""
|
|
|
|
PATTERNS = client_patterns(
|
|
"/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
|
|
"(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
|
|
releases=(),
|
|
)
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastores().main
|
|
self.event_handler = hs.get_event_handler()
|
|
|
|
async def on_GET(
|
|
self,
|
|
request: SynapseRequest,
|
|
room_id: str,
|
|
parent_id: str,
|
|
relation_type: Optional[str] = None,
|
|
event_type: Optional[str] = None,
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request, allow_guest=True)
|
|
|
|
await self.auth.check_user_in_room_or_world_readable(
|
|
room_id,
|
|
requester.user.to_string(),
|
|
allow_departed_users=True,
|
|
)
|
|
|
|
# This checks that a) the event exists and b) the user is allowed to
|
|
# view it.
|
|
event = await self.event_handler.get_event(requester.user, room_id, parent_id)
|
|
if event is None:
|
|
raise SynapseError(404, "Unknown parent event.")
|
|
|
|
if relation_type not in (RelationTypes.ANNOTATION, None):
|
|
raise SynapseError(
|
|
400, f"Relation type must be '{RelationTypes.ANNOTATION}'"
|
|
)
|
|
|
|
limit = parse_integer(request, "limit", default=5)
|
|
from_token_str = parse_string(request, "from")
|
|
to_token_str = parse_string(request, "to")
|
|
|
|
# Return the relations
|
|
from_token = None
|
|
if from_token_str:
|
|
from_token = AggregationPaginationToken.from_string(from_token_str)
|
|
|
|
to_token = None
|
|
if to_token_str:
|
|
to_token = AggregationPaginationToken.from_string(to_token_str)
|
|
|
|
pagination_chunk = await self.store.get_aggregation_groups_for_event(
|
|
event_id=parent_id,
|
|
room_id=room_id,
|
|
event_type=event_type,
|
|
limit=limit,
|
|
from_token=from_token,
|
|
to_token=to_token,
|
|
)
|
|
|
|
return 200, await pagination_chunk.to_dict(self.store)
|
|
|
|
|
|
class RelationAggregationGroupPaginationServlet(RestServlet):
|
|
"""API to paginate within an aggregation group of relations, e.g. paginate
|
|
all the 👍 reactions on an event.
|
|
|
|
Example request and response:
|
|
|
|
GET /rooms/{room_id}/aggregations/{parent_id}/m.annotation/m.reaction/👍
|
|
|
|
{
|
|
chunk: [
|
|
{
|
|
"type": "m.reaction",
|
|
"content": {
|
|
"m.relates_to": {
|
|
"rel_type": "m.annotation",
|
|
"key": "👍"
|
|
}
|
|
}
|
|
},
|
|
...
|
|
]
|
|
}
|
|
"""
|
|
|
|
PATTERNS = client_patterns(
|
|
"/rooms/(?P<room_id>[^/]*)/aggregations/(?P<parent_id>[^/]*)"
|
|
"/(?P<relation_type>[^/]*)/(?P<event_type>[^/]*)/(?P<key>[^/]*)$",
|
|
releases=(),
|
|
)
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastores().main
|
|
self.clock = hs.get_clock()
|
|
self._event_serializer = hs.get_event_client_serializer()
|
|
self.event_handler = hs.get_event_handler()
|
|
|
|
async def on_GET(
|
|
self,
|
|
request: SynapseRequest,
|
|
room_id: str,
|
|
parent_id: str,
|
|
relation_type: str,
|
|
event_type: str,
|
|
key: str,
|
|
) -> Tuple[int, JsonDict]:
|
|
requester = await self.auth.get_user_by_req(request, allow_guest=True)
|
|
|
|
await self.auth.check_user_in_room_or_world_readable(
|
|
room_id,
|
|
requester.user.to_string(),
|
|
allow_departed_users=True,
|
|
)
|
|
|
|
# This checks that a) the event exists and b) the user is allowed to
|
|
# view it.
|
|
event = await self.event_handler.get_event(requester.user, room_id, parent_id)
|
|
if event is None:
|
|
raise SynapseError(404, "Unknown parent event.")
|
|
|
|
if relation_type != RelationTypes.ANNOTATION:
|
|
raise SynapseError(400, "Relation type must be 'annotation'")
|
|
|
|
limit = parse_integer(request, "limit", default=5)
|
|
from_token_str = parse_string(request, "from")
|
|
to_token_str = parse_string(request, "to")
|
|
|
|
from_token = None
|
|
if from_token_str:
|
|
from_token = await StreamToken.from_string(self.store, from_token_str)
|
|
to_token = None
|
|
if to_token_str:
|
|
to_token = await StreamToken.from_string(self.store, to_token_str)
|
|
|
|
result = await self.store.get_relations_for_event(
|
|
event_id=parent_id,
|
|
event=event,
|
|
room_id=room_id,
|
|
relation_type=relation_type,
|
|
event_type=event_type,
|
|
aggregation_key=key,
|
|
limit=limit,
|
|
from_token=from_token,
|
|
to_token=to_token,
|
|
)
|
|
|
|
events = await self.store.get_events_as_list(
|
|
[c["event_id"] for c in result.chunk]
|
|
)
|
|
|
|
now = self.clock.time_msec()
|
|
serialized_events = self._event_serializer.serialize_events(events, now)
|
|
|
|
return_value = await result.to_dict(self.store)
|
|
return_value["chunk"] = serialized_events
|
|
|
|
return 200, return_value
|
|
|
|
|
|
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
|
|
RelationPaginationServlet(hs).register(http_server)
|
|
RelationAggregationPaginationServlet(hs).register(http_server)
|
|
RelationAggregationGroupPaginationServlet(hs).register(http_server)
|