96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# Copyright 2019 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from typing import TYPE_CHECKING, Optional, Tuple
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from synapse.http.server import HttpServer
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from synapse.http.servlet import RestServlet, parse_integer, parse_string
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from synapse.http.site import SynapseRequest
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from synapse.rest.client._base import client_patterns
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from synapse.types import JsonDict, StreamToken
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class RelationPaginationServlet(RestServlet):
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"""API to paginate relations on an event by topological ordering, optionally
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filtered by relation type and event type.
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"""
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PATTERNS = client_patterns(
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"/rooms/(?P<room_id>[^/]*)/relations/(?P<parent_id>[^/]*)"
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"(/(?P<relation_type>[^/]*)(/(?P<event_type>[^/]*))?)?$",
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releases=("v1",),
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)
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def __init__(self, hs: "HomeServer"):
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super().__init__()
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self.auth = hs.get_auth()
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self.store = hs.get_datastores().main
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self._relations_handler = hs.get_relations_handler()
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self._msc3715_enabled = hs.config.experimental.msc3715_enabled
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async def on_GET(
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self,
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request: SynapseRequest,
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room_id: str,
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parent_id: str,
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relation_type: Optional[str] = None,
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event_type: Optional[str] = None,
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request, allow_guest=True)
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limit = parse_integer(request, "limit", default=5)
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if self._msc3715_enabled:
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direction = parse_string(
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request,
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"org.matrix.msc3715.dir",
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default="b",
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allowed_values=["f", "b"],
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)
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else:
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direction = "b"
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from_token_str = parse_string(request, "from")
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to_token_str = parse_string(request, "to")
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# Return the relations
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from_token = None
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if from_token_str:
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from_token = await StreamToken.from_string(self.store, from_token_str)
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to_token = None
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if to_token_str:
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to_token = await StreamToken.from_string(self.store, to_token_str)
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result = await self._relations_handler.get_relations(
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requester=requester,
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event_id=parent_id,
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room_id=room_id,
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relation_type=relation_type,
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event_type=event_type,
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limit=limit,
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direction=direction,
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from_token=from_token,
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to_token=to_token,
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)
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return 200, result
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def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
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RelationPaginationServlet(hs).register(http_server)
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