forked-synapse/synapse/rest/client/relations.py
Patrick Cloke 1182ae5063
Add helper to parse an enum from query args & use it. (#14956)
The `parse_enum` helper pulls an enum value from the query string
(by delegating down to the parse_string helper with values generated
from the enum).

This is used to pull out "f" and "b" in most places and then we thread
the resulting Direction enum throughout more code.
2023-02-01 21:35:24 +00:00

127 lines
4.3 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
import re
from typing import TYPE_CHECKING, Optional, Tuple
from synapse.api.constants import Direction
from synapse.handlers.relations import ThreadsListInclude
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.databases.main.relations import ThreadsNextBatch
from synapse.streams.config import PaginationConfig
from synapse.types import JsonDict
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)
pagination_config = await PaginationConfig.from_request(
self._store, request, default_limit=5, default_dir=Direction.BACKWARDS
)
# The unstable version of this API returns an extra field for client
# compatibility, see https://github.com/matrix-org/synapse/issues/12930.
assert request.path is not None
include_original_event = request.path.startswith(b"/_matrix/client/unstable/")
# Return the relations
result = await self._relations_handler.get_relations(
requester=requester,
event_id=parent_id,
room_id=room_id,
pagin_config=pagination_config,
include_original_event=include_original_event,
relation_type=relation_type,
event_type=event_type,
)
return 200, result
class ThreadsServlet(RestServlet):
PATTERNS = (re.compile("^/_matrix/client/v1/rooms/(?P<room_id>[^/]*)/threads"),)
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
) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
limit = parse_integer(request, "limit", default=5)
from_token_str = parse_string(request, "from")
include = parse_string(
request,
"include",
default=ThreadsListInclude.all.value,
allowed_values=[v.value for v in ThreadsListInclude],
)
# Return the relations
from_token = None
if from_token_str:
from_token = ThreadsNextBatch.from_string(from_token_str)
result = await self._relations_handler.get_threads(
requester=requester,
room_id=room_id,
include=ThreadsListInclude(include),
limit=limit,
from_token=from_token,
)
return 200, result
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
RelationPaginationServlet(hs).register(http_server)
ThreadsServlet(hs).register(http_server)