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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
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_boolean, 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",),
)
CATEGORY = "Client API requests"
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
)
recurse = parse_boolean(request, "recurse", default=False) or parse_boolean(
request, "org.matrix.msc3981.recurse", default=False
)
# 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,
recurse=recurse,
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"),)
CATEGORY = "Client API requests"
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)
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