89 lines
3.0 KiB
Python
89 lines
3.0 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 TYPE_CHECKING, Optional, Tuple
|
|
|
|
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.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=("v1",),
|
|
)
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastores().main
|
|
self._relations_handler = hs.get_relations_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)
|
|
|
|
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)
|
|
|
|
result = await self._relations_handler.get_relations(
|
|
requester=requester,
|
|
event_id=parent_id,
|
|
room_id=room_id,
|
|
relation_type=relation_type,
|
|
event_type=event_type,
|
|
limit=limit,
|
|
direction=direction,
|
|
from_token=from_token,
|
|
to_token=to_token,
|
|
)
|
|
|
|
return 200, result
|
|
|
|
|
|
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
|
|
RelationPaginationServlet(hs).register(http_server)
|