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07b1c70d6b
Adds an optional keyword argument to the /relations API which will recurse a limited number of event relationships. This will cause the API to return not just the events related to the parent event, but also events related to those related to the parent event, etc. This is disabled by default behind an experimental configuration flag and is currently implemented using prefixed parameters.
137 lines
4.7 KiB
Python
137 lines
4.7 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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import re
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from typing import TYPE_CHECKING, Optional, Tuple
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from synapse.api.constants import Direction
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from synapse.handlers.relations import ThreadsListInclude
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from synapse.http.server import HttpServer
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from synapse.http.servlet import RestServlet, parse_boolean, 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.storage.databases.main.relations import ThreadsNextBatch
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from synapse.streams.config import PaginationConfig
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from synapse.types import JsonDict
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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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CATEGORY = "Client API requests"
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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._support_recurse = hs.config.experimental.msc3981_recurse_relations
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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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pagination_config = await PaginationConfig.from_request(
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self._store, request, default_limit=5, default_dir=Direction.BACKWARDS
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)
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if self._support_recurse:
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recurse = parse_boolean(
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request, "org.matrix.msc3981.recurse", default=False
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)
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else:
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recurse = False
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# The unstable version of this API returns an extra field for client
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# compatibility, see https://github.com/matrix-org/synapse/issues/12930.
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assert request.path is not None
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include_original_event = request.path.startswith(b"/_matrix/client/unstable/")
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# Return the relations
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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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pagin_config=pagination_config,
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recurse=recurse,
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include_original_event=include_original_event,
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relation_type=relation_type,
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event_type=event_type,
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)
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return 200, result
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class ThreadsServlet(RestServlet):
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PATTERNS = (re.compile("^/_matrix/client/v1/rooms/(?P<room_id>[^/]*)/threads"),)
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CATEGORY = "Client API requests"
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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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async def on_GET(
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self, request: SynapseRequest, room_id: str
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) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
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limit = parse_integer(request, "limit", default=5)
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from_token_str = parse_string(request, "from")
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include = parse_string(
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request,
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"include",
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default=ThreadsListInclude.all.value,
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allowed_values=[v.value for v in ThreadsListInclude],
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)
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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 = ThreadsNextBatch.from_string(from_token_str)
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result = await self._relations_handler.get_threads(
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requester=requester,
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room_id=room_id,
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include=ThreadsListInclude(include),
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limit=limit,
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from_token=from_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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ThreadsServlet(hs).register(http_server)
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