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![Patrick Cloke](/assets/img/avatar_default.png)
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.
1022 lines
33 KiB
Python
1022 lines
33 KiB
Python
# Copyright 2014-2022 The Matrix.org Foundation C.I.C.
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# Copyright 2020 Sorunome
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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 urllib
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from typing import (
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Any,
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Callable,
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Collection,
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Dict,
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Generator,
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Iterable,
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List,
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Mapping,
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Optional,
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Tuple,
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Union,
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)
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import attr
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import ijson
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from synapse.api.constants import Direction, Membership
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from synapse.api.errors import Codes, HttpResponseException, SynapseError
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from synapse.api.room_versions import RoomVersion
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from synapse.api.urls import (
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FEDERATION_UNSTABLE_PREFIX,
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FEDERATION_V1_PREFIX,
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FEDERATION_V2_PREFIX,
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)
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from synapse.events import EventBase, make_event_from_dict
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from synapse.federation.units import Transaction
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from synapse.http.matrixfederationclient import ByteParser
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from synapse.http.types import QueryParams
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from synapse.types import JsonDict
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from synapse.util import ExceptionBundle
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logger = logging.getLogger(__name__)
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class TransportLayerClient:
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"""Sends federation HTTP requests to other servers"""
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def __init__(self, hs):
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self.server_name = hs.hostname
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self.client = hs.get_federation_http_client()
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self._faster_joins_enabled = hs.config.experimental.faster_joins_enabled
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async def get_room_state_ids(
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self, destination: str, room_id: str, event_id: str
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) -> JsonDict:
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"""Requests the IDs of all state for a given room at the given event.
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Args:
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destination: The host name of the remote homeserver we want
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to get the state from.
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room_id: the room we want the state of
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event_id: The event we want the context at.
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Returns:
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Results in a dict received from the remote homeserver.
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"""
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logger.debug("get_room_state_ids dest=%s, room=%s", destination, room_id)
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path = _create_v1_path("/state_ids/%s", room_id)
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return await self.client.get_json(
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destination,
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path=path,
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args={"event_id": event_id},
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try_trailing_slash_on_400=True,
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)
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async def get_room_state(
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self, room_version: RoomVersion, destination: str, room_id: str, event_id: str
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) -> "StateRequestResponse":
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"""Requests the full state for a given room at the given event.
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Args:
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room_version: the version of the room (required to build the event objects)
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destination: The host name of the remote homeserver we want
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to get the state from.
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room_id: the room we want the state of
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event_id: The event we want the context at.
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Returns:
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Results in a dict received from the remote homeserver.
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"""
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path = _create_v1_path("/state/%s", room_id)
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return await self.client.get_json(
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destination,
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path=path,
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args={"event_id": event_id},
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# This can take a looooooong time for large rooms. Give this a generous
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# timeout of 10 minutes to avoid the partial state resync timing out early
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# and trying a bunch of servers who haven't seen our join yet.
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timeout=600_000,
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parser=_StateParser(room_version),
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)
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async def get_event(
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self, destination: str, event_id: str, timeout: Optional[int] = None
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) -> JsonDict:
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"""Requests the pdu with give id and origin from the given server.
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Args:
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destination: The host name of the remote homeserver we want
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to get the state from.
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event_id: The id of the event being requested.
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timeout: How long to try (in ms) the destination for before
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giving up. None indicates no timeout.
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Returns:
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Results in a dict received from the remote homeserver.
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"""
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logger.debug("get_pdu dest=%s, event_id=%s", destination, event_id)
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path = _create_v1_path("/event/%s", event_id)
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return await self.client.get_json(
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destination, path=path, timeout=timeout, try_trailing_slash_on_400=True
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)
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async def backfill(
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self, destination: str, room_id: str, event_tuples: Collection[str], limit: int
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) -> Optional[JsonDict]:
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"""Requests `limit` previous PDUs in a given context before list of
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PDUs.
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Args:
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destination
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room_id
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event_tuples:
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Must be a Collection that is falsy when empty.
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(Iterable is not enough here!)
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limit
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Returns:
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Results in a dict received from the remote homeserver.
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"""
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logger.debug(
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"backfill dest=%s, room_id=%s, event_tuples=%r, limit=%s",
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destination,
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room_id,
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event_tuples,
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str(limit),
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)
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if not event_tuples:
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# TODO: raise?
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return None
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path = _create_v1_path("/backfill/%s", room_id)
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args = {"v": event_tuples, "limit": [str(limit)]}
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return await self.client.get_json(
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destination, path=path, args=args, try_trailing_slash_on_400=True
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)
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async def timestamp_to_event(
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self, destination: str, room_id: str, timestamp: int, direction: Direction
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) -> Union[JsonDict, List]:
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"""
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Calls a remote federating server at `destination` asking for their
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closest event to the given timestamp in the given direction.
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Args:
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destination: Domain name of the remote homeserver
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room_id: Room to fetch the event from
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timestamp: The point in time (inclusive) we should navigate from in
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the given direction to find the closest event.
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direction: indicates whether we should navigate forward
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or backward from the given timestamp to find the closest event.
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Returns:
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Response dict received from the remote homeserver.
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Raises:
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Various exceptions when the request fails
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"""
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path = _create_v1_path(
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"/timestamp_to_event/%s",
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room_id,
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)
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args = {"ts": [str(timestamp)], "dir": [direction.value]}
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remote_response = await self.client.get_json(
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destination, path=path, args=args, try_trailing_slash_on_400=True
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)
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return remote_response
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async def send_transaction(
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self,
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transaction: Transaction,
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json_data_callback: Optional[Callable[[], JsonDict]] = None,
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) -> JsonDict:
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"""Sends the given Transaction to its destination
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Args:
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transaction
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Returns:
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Succeeds when we get a 2xx HTTP response. The result
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will be the decoded JSON body.
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Fails with ``HTTPRequestException`` if we get an HTTP response
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code >= 300.
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Fails with ``NotRetryingDestination`` if we are not yet ready
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to retry this server.
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Fails with ``FederationDeniedError`` if this destination
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is not on our federation whitelist
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"""
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logger.debug(
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"send_data dest=%s, txid=%s",
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transaction.destination,
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transaction.transaction_id,
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)
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if transaction.destination == self.server_name:
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raise RuntimeError("Transport layer cannot send to itself!")
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# FIXME: This is only used by the tests. The actual json sent is
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# generated by the json_data_callback.
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json_data = transaction.get_dict()
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path = _create_v1_path("/send/%s", transaction.transaction_id)
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return await self.client.put_json(
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transaction.destination,
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path=path,
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data=json_data,
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json_data_callback=json_data_callback,
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long_retries=True,
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backoff_on_404=True, # If we get a 404 the other side has gone
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try_trailing_slash_on_400=True,
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)
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async def make_query(
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self,
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destination: str,
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query_type: str,
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args: QueryParams,
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retry_on_dns_fail: bool,
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ignore_backoff: bool = False,
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prefix: str = FEDERATION_V1_PREFIX,
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) -> JsonDict:
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path = _create_path(prefix, "/query/%s", query_type)
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return await self.client.get_json(
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destination=destination,
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path=path,
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args=args,
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retry_on_dns_fail=retry_on_dns_fail,
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timeout=10000,
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ignore_backoff=ignore_backoff,
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)
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async def make_membership_event(
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self,
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destination: str,
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room_id: str,
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user_id: str,
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membership: str,
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params: Optional[Mapping[str, Union[str, Iterable[str]]]],
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) -> JsonDict:
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"""Asks a remote server to build and sign us a membership event
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Note that this does not append any events to any graphs.
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Args:
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destination: address of remote homeserver
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room_id: room to join/leave
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user_id: user to be joined/left
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membership: one of join/leave
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params: Query parameters to include in the request.
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Returns:
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Succeeds when we get a 2xx HTTP response. The result
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will be the decoded JSON body (ie, the new event).
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Fails with ``HTTPRequestException`` if we get an HTTP response
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code >= 300.
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Fails with ``NotRetryingDestination`` if we are not yet ready
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to retry this server.
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Fails with ``FederationDeniedError`` if the remote destination
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is not in our federation whitelist
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"""
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valid_memberships = {Membership.JOIN, Membership.LEAVE, Membership.KNOCK}
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if membership not in valid_memberships:
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raise RuntimeError(
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"make_membership_event called with membership='%s', must be one of %s"
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% (membership, ",".join(valid_memberships))
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)
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path = _create_v1_path("/make_%s/%s/%s", membership, room_id, user_id)
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ignore_backoff = False
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retry_on_dns_fail = False
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if membership == Membership.LEAVE:
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# we particularly want to do our best to send leave events. The
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# problem is that if it fails, we won't retry it later, so if the
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# remote server was just having a momentary blip, the room will be
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# out of sync.
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ignore_backoff = True
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retry_on_dns_fail = True
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return await self.client.get_json(
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destination=destination,
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path=path,
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args=params,
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retry_on_dns_fail=retry_on_dns_fail,
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timeout=20000,
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ignore_backoff=ignore_backoff,
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)
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async def send_join_v1(
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self,
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room_version: RoomVersion,
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destination: str,
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room_id: str,
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event_id: str,
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content: JsonDict,
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) -> "SendJoinResponse":
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path = _create_v1_path("/send_join/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination,
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path=path,
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data=content,
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parser=SendJoinParser(room_version, v1_api=True),
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)
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async def send_join_v2(
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self,
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room_version: RoomVersion,
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destination: str,
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room_id: str,
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event_id: str,
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content: JsonDict,
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omit_members: bool,
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) -> "SendJoinResponse":
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path = _create_v2_path("/send_join/%s/%s", room_id, event_id)
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query_params: Dict[str, str] = {}
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if self._faster_joins_enabled:
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# lazy-load state on join
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query_params["org.matrix.msc3706.partial_state"] = (
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"true" if omit_members else "false"
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)
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query_params["omit_members"] = "true" if omit_members else "false"
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return await self.client.put_json(
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destination=destination,
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path=path,
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args=query_params,
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data=content,
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parser=SendJoinParser(room_version, v1_api=False),
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)
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async def send_leave_v1(
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self, destination: str, room_id: str, event_id: str, content: JsonDict
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) -> Tuple[int, JsonDict]:
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path = _create_v1_path("/send_leave/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination,
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path=path,
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data=content,
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# we want to do our best to send this through. The problem is
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# that if it fails, we won't retry it later, so if the remote
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# server was just having a momentary blip, the room will be out of
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# sync.
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ignore_backoff=True,
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)
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async def send_leave_v2(
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self, destination: str, room_id: str, event_id: str, content: JsonDict
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) -> JsonDict:
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path = _create_v2_path("/send_leave/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination,
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path=path,
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data=content,
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# we want to do our best to send this through. The problem is
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# that if it fails, we won't retry it later, so if the remote
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# server was just having a momentary blip, the room will be out of
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# sync.
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ignore_backoff=True,
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)
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async def send_knock_v1(
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self,
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destination: str,
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room_id: str,
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event_id: str,
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content: JsonDict,
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) -> JsonDict:
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"""
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Sends a signed knock membership event to a remote server. This is the second
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step for knocking after make_knock.
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Args:
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destination: The remote homeserver.
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room_id: The ID of the room to knock on.
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event_id: The ID of the knock membership event that we're sending.
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content: The knock membership event that we're sending. Note that this is not the
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`content` field of the membership event, but the entire signed membership event
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itself represented as a JSON dict.
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Returns:
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The remote homeserver can optionally return some state from the room. The response
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dictionary is in the form:
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{"knock_state_events": [<state event dict>, ...]}
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The list of state events may be empty.
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"""
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path = _create_v1_path("/send_knock/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination, path=path, data=content
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)
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async def send_invite_v1(
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self, destination: str, room_id: str, event_id: str, content: JsonDict
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) -> Tuple[int, JsonDict]:
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path = _create_v1_path("/invite/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination, path=path, data=content, ignore_backoff=True
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)
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async def send_invite_v2(
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self, destination: str, room_id: str, event_id: str, content: JsonDict
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) -> JsonDict:
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path = _create_v2_path("/invite/%s/%s", room_id, event_id)
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return await self.client.put_json(
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destination=destination, path=path, data=content, ignore_backoff=True
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)
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async def get_public_rooms(
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self,
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remote_server: str,
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limit: Optional[int] = None,
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since_token: Optional[str] = None,
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search_filter: Optional[Dict] = None,
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include_all_networks: bool = False,
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third_party_instance_id: Optional[str] = None,
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) -> JsonDict:
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"""Get the list of public rooms from a remote homeserver
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See synapse.federation.federation_client.FederationClient.get_public_rooms for
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more information.
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"""
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if search_filter:
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# this uses MSC2197 (Search Filtering over Federation)
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path = _create_v1_path("/publicRooms")
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data: Dict[str, Any] = {
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"include_all_networks": "true" if include_all_networks else "false"
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}
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if third_party_instance_id:
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data["third_party_instance_id"] = third_party_instance_id
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if limit:
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data["limit"] = limit
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if since_token:
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data["since"] = since_token
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data["filter"] = search_filter
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try:
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response = await self.client.post_json(
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destination=remote_server, path=path, data=data, ignore_backoff=True
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)
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except HttpResponseException as e:
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if e.code == 403:
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raise SynapseError(
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403,
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"You are not allowed to view the public rooms list of %s"
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% (remote_server,),
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errcode=Codes.FORBIDDEN,
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)
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raise
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else:
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path = _create_v1_path("/publicRooms")
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args: Dict[str, Union[str, Iterable[str]]] = {
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"include_all_networks": "true" if include_all_networks else "false"
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}
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if third_party_instance_id:
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args["third_party_instance_id"] = (third_party_instance_id,)
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if limit:
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args["limit"] = [str(limit)]
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if since_token:
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args["since"] = [since_token]
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try:
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response = await self.client.get_json(
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destination=remote_server, path=path, args=args, ignore_backoff=True
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)
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except HttpResponseException as e:
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if e.code == 403:
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raise SynapseError(
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403,
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"You are not allowed to view the public rooms list of %s"
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% (remote_server,),
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errcode=Codes.FORBIDDEN,
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|
)
|
|
raise
|
|
|
|
return response
|
|
|
|
async def exchange_third_party_invite(
|
|
self, destination: str, room_id: str, event_dict: JsonDict
|
|
) -> JsonDict:
|
|
path = _create_v1_path("/exchange_third_party_invite/%s", room_id)
|
|
|
|
return await self.client.put_json(
|
|
destination=destination, path=path, data=event_dict
|
|
)
|
|
|
|
async def get_event_auth(
|
|
self, destination: str, room_id: str, event_id: str
|
|
) -> JsonDict:
|
|
path = _create_v1_path("/event_auth/%s/%s", room_id, event_id)
|
|
|
|
return await self.client.get_json(destination=destination, path=path)
|
|
|
|
async def query_client_keys(
|
|
self, destination: str, query_content: JsonDict, timeout: int
|
|
) -> JsonDict:
|
|
"""Query the device keys for a list of user ids hosted on a remote
|
|
server.
|
|
|
|
Request:
|
|
{
|
|
"device_keys": {
|
|
"<user_id>": ["<device_id>"]
|
|
}
|
|
}
|
|
|
|
Response:
|
|
{
|
|
"device_keys": {
|
|
"<user_id>": {
|
|
"<device_id>": {...}
|
|
}
|
|
},
|
|
"master_key": {
|
|
"<user_id>": {...}
|
|
}
|
|
},
|
|
"self_signing_key": {
|
|
"<user_id>": {...}
|
|
}
|
|
}
|
|
|
|
Args:
|
|
destination: The server to query.
|
|
query_content: The user ids to query.
|
|
Returns:
|
|
A dict containing device and cross-signing keys.
|
|
"""
|
|
path = _create_v1_path("/user/keys/query")
|
|
|
|
return await self.client.post_json(
|
|
destination=destination, path=path, data=query_content, timeout=timeout
|
|
)
|
|
|
|
async def query_user_devices(
|
|
self, destination: str, user_id: str, timeout: int
|
|
) -> JsonDict:
|
|
"""Query the devices for a user id hosted on a remote server.
|
|
|
|
Response:
|
|
{
|
|
"stream_id": "...",
|
|
"devices": [ { ... } ],
|
|
"master_key": {
|
|
"user_id": "<user_id>",
|
|
"usage": [...],
|
|
"keys": {...},
|
|
"signatures": {
|
|
"<user_id>": {...}
|
|
}
|
|
},
|
|
"self_signing_key": {
|
|
"user_id": "<user_id>",
|
|
"usage": [...],
|
|
"keys": {...},
|
|
"signatures": {
|
|
"<user_id>": {...}
|
|
}
|
|
}
|
|
}
|
|
|
|
Args:
|
|
destination: The server to query.
|
|
query_content: The user ids to query.
|
|
Returns:
|
|
A dict containing device and cross-signing keys.
|
|
"""
|
|
path = _create_v1_path("/user/devices/%s", user_id)
|
|
|
|
return await self.client.get_json(
|
|
destination=destination, path=path, timeout=timeout
|
|
)
|
|
|
|
async def claim_client_keys(
|
|
self, destination: str, query_content: JsonDict, timeout: Optional[int]
|
|
) -> JsonDict:
|
|
"""Claim one-time keys for a list of devices hosted on a remote server.
|
|
|
|
Request:
|
|
{
|
|
"one_time_keys": {
|
|
"<user_id>": {
|
|
"<device_id>": "<algorithm>"
|
|
}
|
|
}
|
|
}
|
|
|
|
Response:
|
|
{
|
|
"device_keys": {
|
|
"<user_id>": {
|
|
"<device_id>": {
|
|
"<algorithm>:<key_id>": "<key_base64>"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Args:
|
|
destination: The server to query.
|
|
query_content: The user ids to query.
|
|
Returns:
|
|
A dict containing the one-time keys.
|
|
"""
|
|
|
|
path = _create_v1_path("/user/keys/claim")
|
|
|
|
return await self.client.post_json(
|
|
destination=destination, path=path, data=query_content, timeout=timeout
|
|
)
|
|
|
|
async def get_missing_events(
|
|
self,
|
|
destination: str,
|
|
room_id: str,
|
|
earliest_events: Iterable[str],
|
|
latest_events: Iterable[str],
|
|
limit: int,
|
|
min_depth: int,
|
|
timeout: int,
|
|
) -> JsonDict:
|
|
path = _create_v1_path("/get_missing_events/%s", room_id)
|
|
|
|
return await self.client.post_json(
|
|
destination=destination,
|
|
path=path,
|
|
data={
|
|
"limit": int(limit),
|
|
"min_depth": int(min_depth),
|
|
"earliest_events": earliest_events,
|
|
"latest_events": latest_events,
|
|
},
|
|
timeout=timeout,
|
|
)
|
|
|
|
async def get_room_complexity(self, destination: str, room_id: str) -> JsonDict:
|
|
"""
|
|
Args:
|
|
destination: The remote server
|
|
room_id: The room ID to ask about.
|
|
"""
|
|
path = _create_path(FEDERATION_UNSTABLE_PREFIX, "/rooms/%s/complexity", room_id)
|
|
|
|
return await self.client.get_json(destination=destination, path=path)
|
|
|
|
async def get_room_hierarchy(
|
|
self, destination: str, room_id: str, suggested_only: bool
|
|
) -> JsonDict:
|
|
"""
|
|
Args:
|
|
destination: The remote server
|
|
room_id: The room ID to ask about.
|
|
suggested_only: if True, only suggested rooms will be returned
|
|
"""
|
|
path = _create_v1_path("/hierarchy/%s", room_id)
|
|
|
|
return await self.client.get_json(
|
|
destination=destination,
|
|
path=path,
|
|
args={"suggested_only": "true" if suggested_only else "false"},
|
|
)
|
|
|
|
async def get_room_hierarchy_unstable(
|
|
self, destination: str, room_id: str, suggested_only: bool
|
|
) -> JsonDict:
|
|
"""
|
|
Args:
|
|
destination: The remote server
|
|
room_id: The room ID to ask about.
|
|
suggested_only: if True, only suggested rooms will be returned
|
|
"""
|
|
path = _create_path(
|
|
FEDERATION_UNSTABLE_PREFIX, "/org.matrix.msc2946/hierarchy/%s", room_id
|
|
)
|
|
|
|
return await self.client.get_json(
|
|
destination=destination,
|
|
path=path,
|
|
args={"suggested_only": "true" if suggested_only else "false"},
|
|
)
|
|
|
|
async def get_account_status(
|
|
self, destination: str, user_ids: List[str]
|
|
) -> JsonDict:
|
|
"""
|
|
Args:
|
|
destination: The remote server.
|
|
user_ids: The user ID(s) for which to request account status(es).
|
|
"""
|
|
path = _create_path(
|
|
FEDERATION_UNSTABLE_PREFIX, "/org.matrix.msc3720/account_status"
|
|
)
|
|
|
|
return await self.client.post_json(
|
|
destination=destination, path=path, data={"user_ids": user_ids}
|
|
)
|
|
|
|
|
|
def _create_path(federation_prefix: str, path: str, *args: str) -> str:
|
|
"""
|
|
Ensures that all args are url encoded.
|
|
"""
|
|
return federation_prefix + path % tuple(urllib.parse.quote(arg, "") for arg in args)
|
|
|
|
|
|
def _create_v1_path(path: str, *args: str) -> str:
|
|
"""Creates a path against V1 federation API from the path template and
|
|
args. Ensures that all args are url encoded.
|
|
|
|
Example:
|
|
|
|
_create_v1_path("/event/%s", event_id)
|
|
|
|
Args:
|
|
path: String template for the path
|
|
args: Args to insert into path. Each arg will be url encoded
|
|
"""
|
|
return _create_path(FEDERATION_V1_PREFIX, path, *args)
|
|
|
|
|
|
def _create_v2_path(path: str, *args: str) -> str:
|
|
"""Creates a path against V2 federation API from the path template and
|
|
args. Ensures that all args are url encoded.
|
|
|
|
Example:
|
|
|
|
_create_v2_path("/event/%s", event_id)
|
|
|
|
Args:
|
|
path: String template for the path
|
|
args: Args to insert into path. Each arg will be url encoded
|
|
"""
|
|
return _create_path(FEDERATION_V2_PREFIX, path, *args)
|
|
|
|
|
|
@attr.s(slots=True, auto_attribs=True)
|
|
class SendJoinResponse:
|
|
"""The parsed response of a `/send_join` request."""
|
|
|
|
# The list of auth events from the /send_join response.
|
|
auth_events: List[EventBase]
|
|
# The list of state from the /send_join response.
|
|
state: List[EventBase]
|
|
# The raw join event from the /send_join response.
|
|
event_dict: JsonDict
|
|
# The parsed join event from the /send_join response. This will be None if
|
|
# "event" is not included in the response.
|
|
event: Optional[EventBase] = None
|
|
|
|
# The room state is incomplete
|
|
members_omitted: bool = False
|
|
|
|
# List of servers in the room
|
|
servers_in_room: Optional[List[str]] = None
|
|
|
|
|
|
@attr.s(slots=True, auto_attribs=True)
|
|
class StateRequestResponse:
|
|
"""The parsed response of a `/state` request."""
|
|
|
|
auth_events: List[EventBase]
|
|
state: List[EventBase]
|
|
|
|
|
|
@ijson.coroutine
|
|
def _event_parser(event_dict: JsonDict) -> Generator[None, Tuple[str, Any], None]:
|
|
"""Helper function for use with `ijson.kvitems_coro` to parse key-value pairs
|
|
to add them to a given dictionary.
|
|
"""
|
|
|
|
while True:
|
|
key, value = yield
|
|
event_dict[key] = value
|
|
|
|
|
|
@ijson.coroutine
|
|
def _event_list_parser(
|
|
room_version: RoomVersion, events: List[EventBase]
|
|
) -> Generator[None, JsonDict, None]:
|
|
"""Helper function for use with `ijson.items_coro` to parse an array of
|
|
events and add them to the given list.
|
|
"""
|
|
|
|
while True:
|
|
obj = yield
|
|
event = make_event_from_dict(obj, room_version)
|
|
events.append(event)
|
|
|
|
|
|
@ijson.coroutine
|
|
def _members_omitted_parser(response: SendJoinResponse) -> Generator[None, Any, None]:
|
|
"""Helper function for use with `ijson.items_coro`
|
|
|
|
Parses the members_omitted field in send_join responses
|
|
"""
|
|
while True:
|
|
val = yield
|
|
if not isinstance(val, bool):
|
|
raise TypeError(
|
|
"members_omitted (formerly org.matrix.msc370c.partial_state) must be a boolean"
|
|
)
|
|
response.members_omitted = val
|
|
|
|
|
|
@ijson.coroutine
|
|
def _servers_in_room_parser(response: SendJoinResponse) -> Generator[None, Any, None]:
|
|
"""Helper function for use with `ijson.items_coro`
|
|
|
|
Parses the servers_in_room field in send_join responses
|
|
"""
|
|
while True:
|
|
val = yield
|
|
if not isinstance(val, list) or any(not isinstance(x, str) for x in val):
|
|
raise TypeError("servers_in_room must be a list of strings")
|
|
response.servers_in_room = val
|
|
|
|
|
|
class SendJoinParser(ByteParser[SendJoinResponse]):
|
|
"""A parser for the response to `/send_join` requests.
|
|
|
|
Args:
|
|
room_version: The version of the room.
|
|
v1_api: Whether the response is in the v1 format.
|
|
"""
|
|
|
|
CONTENT_TYPE = "application/json"
|
|
|
|
# /send_join responses can be huge, so we override the size limit here. The response
|
|
# is parsed in a streaming manner, which helps alleviate the issue of memory
|
|
# usage a bit.
|
|
MAX_RESPONSE_SIZE = 500 * 1024 * 1024
|
|
|
|
def __init__(self, room_version: RoomVersion, v1_api: bool):
|
|
self._response = SendJoinResponse([], [], event_dict={})
|
|
self._room_version = room_version
|
|
self._coros: List[Generator[None, bytes, None]] = []
|
|
|
|
# The V1 API has the shape of `[200, {...}]`, which we handle by
|
|
# prefixing with `item.*`.
|
|
prefix = "item." if v1_api else ""
|
|
|
|
self._coros = [
|
|
ijson.items_coro(
|
|
_event_list_parser(room_version, self._response.state),
|
|
prefix + "state.item",
|
|
use_float=True,
|
|
),
|
|
ijson.items_coro(
|
|
_event_list_parser(room_version, self._response.auth_events),
|
|
prefix + "auth_chain.item",
|
|
use_float=True,
|
|
),
|
|
ijson.kvitems_coro(
|
|
_event_parser(self._response.event_dict),
|
|
prefix + "event",
|
|
use_float=True,
|
|
),
|
|
]
|
|
|
|
if not v1_api:
|
|
self._coros.append(
|
|
ijson.items_coro(
|
|
_members_omitted_parser(self._response),
|
|
"org.matrix.msc3706.partial_state",
|
|
use_float="True",
|
|
)
|
|
)
|
|
# The stable field name comes last, so it "wins" if the fields disagree
|
|
self._coros.append(
|
|
ijson.items_coro(
|
|
_members_omitted_parser(self._response),
|
|
"members_omitted",
|
|
use_float="True",
|
|
)
|
|
)
|
|
|
|
self._coros.append(
|
|
ijson.items_coro(
|
|
_servers_in_room_parser(self._response),
|
|
"org.matrix.msc3706.servers_in_room",
|
|
use_float="True",
|
|
)
|
|
)
|
|
|
|
# Again, stable field name comes last
|
|
self._coros.append(
|
|
ijson.items_coro(
|
|
_servers_in_room_parser(self._response),
|
|
"servers_in_room",
|
|
use_float="True",
|
|
)
|
|
)
|
|
|
|
def write(self, data: bytes) -> int:
|
|
for c in self._coros:
|
|
c.send(data)
|
|
|
|
return len(data)
|
|
|
|
def finish(self) -> SendJoinResponse:
|
|
_close_coros(self._coros)
|
|
|
|
if self._response.event_dict:
|
|
self._response.event = make_event_from_dict(
|
|
self._response.event_dict, self._room_version
|
|
)
|
|
return self._response
|
|
|
|
|
|
class _StateParser(ByteParser[StateRequestResponse]):
|
|
"""A parser for the response to `/state` requests.
|
|
|
|
Args:
|
|
room_version: The version of the room.
|
|
"""
|
|
|
|
CONTENT_TYPE = "application/json"
|
|
|
|
# As with /send_join, /state responses can be huge.
|
|
MAX_RESPONSE_SIZE = 500 * 1024 * 1024
|
|
|
|
def __init__(self, room_version: RoomVersion):
|
|
self._response = StateRequestResponse([], [])
|
|
self._room_version = room_version
|
|
self._coros: List[Generator[None, bytes, None]] = [
|
|
ijson.items_coro(
|
|
_event_list_parser(room_version, self._response.state),
|
|
"pdus.item",
|
|
use_float=True,
|
|
),
|
|
ijson.items_coro(
|
|
_event_list_parser(room_version, self._response.auth_events),
|
|
"auth_chain.item",
|
|
use_float=True,
|
|
),
|
|
]
|
|
|
|
def write(self, data: bytes) -> int:
|
|
for c in self._coros:
|
|
c.send(data)
|
|
return len(data)
|
|
|
|
def finish(self) -> StateRequestResponse:
|
|
_close_coros(self._coros)
|
|
return self._response
|
|
|
|
|
|
def _close_coros(coros: Iterable[Generator[None, bytes, None]]) -> None:
|
|
"""Close each of the given coroutines.
|
|
|
|
Always calls .close() on each coroutine, even if doing so raises an exception.
|
|
Any exceptions raised are aggregated into an ExceptionBundle.
|
|
|
|
:raises ExceptionBundle: if at least one coroutine fails to close.
|
|
"""
|
|
exceptions = []
|
|
for c in coros:
|
|
try:
|
|
c.close()
|
|
except Exception as e:
|
|
exceptions.append(e)
|
|
|
|
if exceptions:
|
|
# raise from the first exception so that the traceback has slightly more context
|
|
raise ExceptionBundle(
|
|
f"There were {len(exceptions)} errors closing coroutines", exceptions
|
|
) from exceptions[0]
|