mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-11 03:24:21 -05:00
0f971ca68e
Update `get_pdu` to return the untouched, pristine `EventBase` as it was originally seen over federation (no metadata added). Previously, we returned the same `event` reference that we stored in the cache which downstream code modified in place and added metadata like setting it as an `outlier` and essentially poisoned our cache. Now we always return a copy of the `event` so the original can stay pristine in our cache and re-used for the next cache call.
Split out from https://github.com/matrix-org/synapse/pull/13205
As discussed at:
- https://github.com/matrix-org/synapse/pull/13205#discussion_r918365746
- https://github.com/matrix-org/synapse/pull/13205#discussion_r918366125
Related to https://github.com/matrix-org/synapse/issues/12584. This PR doesn't fix that issue because it hits [`get_event` which exists from the local database before it tries to `get_pdu`](7864f33e28/synapse/federation/federation_client.py (L581-L594)).
251 lines
8.8 KiB
Python
251 lines
8.8 KiB
Python
# Copyright 2022 Matrix.org Federation C.I.C
|
|
#
|
|
# 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 json
|
|
from unittest import mock
|
|
|
|
import twisted.web.client
|
|
from twisted.internet import defer
|
|
from twisted.internet.protocol import Protocol
|
|
from twisted.python.failure import Failure
|
|
from twisted.test.proto_helpers import MemoryReactor
|
|
|
|
from synapse.api.room_versions import RoomVersions
|
|
from synapse.events import EventBase
|
|
from synapse.server import HomeServer
|
|
from synapse.types import JsonDict
|
|
from synapse.util import Clock
|
|
|
|
from tests.unittest import FederatingHomeserverTestCase
|
|
|
|
|
|
class FederationClientTest(FederatingHomeserverTestCase):
|
|
def prepare(self, reactor: MemoryReactor, clock: Clock, homeserver: HomeServer):
|
|
super().prepare(reactor, clock, homeserver)
|
|
|
|
# mock out the Agent used by the federation client, which is easier than
|
|
# catching the HTTPS connection and do the TLS stuff.
|
|
self._mock_agent = mock.create_autospec(twisted.web.client.Agent, spec_set=True)
|
|
homeserver.get_federation_http_client().agent = self._mock_agent
|
|
|
|
# Move clock up to somewhat realistic time so the PDU destination retry
|
|
# works (`now` needs to be larger than `0 + PDU_RETRY_TIME_MS`).
|
|
self.reactor.advance(1000000000)
|
|
|
|
self.creator = f"@creator:{self.OTHER_SERVER_NAME}"
|
|
self.test_room_id = "!room_id"
|
|
|
|
def test_get_room_state(self):
|
|
# mock up some events to use in the response.
|
|
# In real life, these would have things in `prev_events` and `auth_events`, but that's
|
|
# a bit annoying to mock up, and the code under test doesn't care, so we don't bother.
|
|
create_event_dict = self.add_hashes_and_signatures_from_other_server(
|
|
{
|
|
"room_id": self.test_room_id,
|
|
"type": "m.room.create",
|
|
"state_key": "",
|
|
"sender": self.creator,
|
|
"content": {"creator": self.creator},
|
|
"prev_events": [],
|
|
"auth_events": [],
|
|
"origin_server_ts": 500,
|
|
}
|
|
)
|
|
member_event_dict = self.add_hashes_and_signatures_from_other_server(
|
|
{
|
|
"room_id": self.test_room_id,
|
|
"type": "m.room.member",
|
|
"sender": self.creator,
|
|
"state_key": self.creator,
|
|
"content": {"membership": "join"},
|
|
"prev_events": [],
|
|
"auth_events": [],
|
|
"origin_server_ts": 600,
|
|
}
|
|
)
|
|
pl_event_dict = self.add_hashes_and_signatures_from_other_server(
|
|
{
|
|
"room_id": self.test_room_id,
|
|
"type": "m.room.power_levels",
|
|
"sender": self.creator,
|
|
"state_key": "",
|
|
"content": {},
|
|
"prev_events": [],
|
|
"auth_events": [],
|
|
"origin_server_ts": 700,
|
|
}
|
|
)
|
|
|
|
# mock up the response, and have the agent return it
|
|
self._mock_agent.request.side_effect = lambda *args, **kwargs: defer.succeed(
|
|
_mock_response(
|
|
{
|
|
"pdus": [
|
|
create_event_dict,
|
|
member_event_dict,
|
|
pl_event_dict,
|
|
],
|
|
"auth_chain": [
|
|
create_event_dict,
|
|
member_event_dict,
|
|
],
|
|
}
|
|
)
|
|
)
|
|
|
|
# now fire off the request
|
|
state_resp, auth_resp = self.get_success(
|
|
self.hs.get_federation_client().get_room_state(
|
|
"yet.another.server",
|
|
self.test_room_id,
|
|
"event_id",
|
|
RoomVersions.V9,
|
|
)
|
|
)
|
|
|
|
# check the right call got made to the agent
|
|
self._mock_agent.request.assert_called_once_with(
|
|
b"GET",
|
|
b"matrix://yet.another.server/_matrix/federation/v1/state/%21room_id?event_id=event_id",
|
|
headers=mock.ANY,
|
|
bodyProducer=None,
|
|
)
|
|
|
|
# ... and that the response is correct.
|
|
|
|
# the auth_resp should be empty because all the events are also in state
|
|
self.assertEqual(auth_resp, [])
|
|
|
|
# all of the events should be returned in state_resp, though not necessarily
|
|
# in the same order. We just check the type on the assumption that if the type
|
|
# is right, so is the rest of the event.
|
|
self.assertCountEqual(
|
|
[e.type for e in state_resp],
|
|
["m.room.create", "m.room.member", "m.room.power_levels"],
|
|
)
|
|
|
|
def test_get_pdu_returns_nothing_when_event_does_not_exist(self):
|
|
"""No event should be returned when the event does not exist"""
|
|
remote_pdu = self.get_success(
|
|
self.hs.get_federation_client().get_pdu(
|
|
["yet.another.server"],
|
|
"event_should_not_exist",
|
|
RoomVersions.V9,
|
|
)
|
|
)
|
|
self.assertEqual(remote_pdu, None)
|
|
|
|
def test_get_pdu(self):
|
|
"""Test to make sure an event is returned by `get_pdu()`"""
|
|
self._get_pdu_once()
|
|
|
|
def test_get_pdu_event_from_cache_is_pristine(self):
|
|
"""Test that modifications made to events returned by `get_pdu()`
|
|
do not propagate back to to the internal cache (events returned should
|
|
be a copy).
|
|
"""
|
|
|
|
# Get the PDU in the cache
|
|
remote_pdu = self._get_pdu_once()
|
|
|
|
# Modify the the event reference.
|
|
# This change should not make it back to the `_get_pdu_cache`.
|
|
remote_pdu.internal_metadata.outlier = True
|
|
|
|
# Get the event again. This time it should read it from cache.
|
|
remote_pdu2 = self.get_success(
|
|
self.hs.get_federation_client().get_pdu(
|
|
["yet.another.server"],
|
|
remote_pdu.event_id,
|
|
RoomVersions.V9,
|
|
)
|
|
)
|
|
|
|
# Sanity check that we are working against the same event
|
|
self.assertEqual(remote_pdu.event_id, remote_pdu2.event_id)
|
|
|
|
# Make sure the event does not include modification from earlier
|
|
self.assertIsNotNone(remote_pdu2)
|
|
self.assertEqual(remote_pdu2.internal_metadata.outlier, False)
|
|
|
|
def _get_pdu_once(self) -> EventBase:
|
|
"""Retrieve an event via `get_pdu()` and assert that an event was returned.
|
|
Also used to prime the cache for subsequent test logic.
|
|
"""
|
|
message_event_dict = self.add_hashes_and_signatures_from_other_server(
|
|
{
|
|
"room_id": self.test_room_id,
|
|
"type": "m.room.message",
|
|
"sender": self.creator,
|
|
"state_key": "",
|
|
"content": {},
|
|
"prev_events": [],
|
|
"auth_events": [],
|
|
"origin_server_ts": 700,
|
|
"depth": 10,
|
|
}
|
|
)
|
|
|
|
# mock up the response, and have the agent return it
|
|
self._mock_agent.request.side_effect = lambda *args, **kwargs: defer.succeed(
|
|
_mock_response(
|
|
{
|
|
"origin": "yet.another.server",
|
|
"origin_server_ts": 900,
|
|
"pdus": [
|
|
message_event_dict,
|
|
],
|
|
}
|
|
)
|
|
)
|
|
|
|
remote_pdu = self.get_success(
|
|
self.hs.get_federation_client().get_pdu(
|
|
["yet.another.server"],
|
|
"event_id",
|
|
RoomVersions.V9,
|
|
)
|
|
)
|
|
|
|
# check the right call got made to the agent
|
|
self._mock_agent.request.assert_called_once_with(
|
|
b"GET",
|
|
b"matrix://yet.another.server/_matrix/federation/v1/event/event_id",
|
|
headers=mock.ANY,
|
|
bodyProducer=None,
|
|
)
|
|
|
|
self.assertIsNotNone(remote_pdu)
|
|
self.assertEqual(remote_pdu.internal_metadata.outlier, False)
|
|
|
|
return remote_pdu
|
|
|
|
|
|
def _mock_response(resp: JsonDict):
|
|
body = json.dumps(resp).encode("utf-8")
|
|
|
|
def deliver_body(p: Protocol):
|
|
p.dataReceived(body)
|
|
p.connectionLost(Failure(twisted.web.client.ResponseDone()))
|
|
|
|
response = mock.Mock(
|
|
code=200,
|
|
phrase=b"OK",
|
|
headers=twisted.web.client.Headers({"content-Type": ["application/json"]}),
|
|
length=len(body),
|
|
deliverBody=deliver_body,
|
|
)
|
|
mock.seal(response)
|
|
return response
|