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https://mau.dev/maunium/synapse.git
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9864efa532
Fix a bug where we could end up firing off multiple requests for server_keys for the same server at the same time.
126 lines
4.4 KiB
Python
126 lines
4.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2017 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 signedjson
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from mock import Mock
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from synapse.api.errors import SynapseError
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from synapse.crypto import keyring
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from synapse.util import async
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from synapse.util.logcontext import LoggingContext
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from tests import unittest, utils
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from twisted.internet import defer
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class KeyringTestCase(unittest.TestCase):
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@defer.inlineCallbacks
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def setUp(self):
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self.http_client = Mock()
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self.hs = yield utils.setup_test_homeserver(
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handlers=None,
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http_client=self.http_client,
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)
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self.hs.config.perspectives = {
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"persp_server": {"k": "v"}
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}
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@defer.inlineCallbacks
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def test_wait_for_previous_lookups(self):
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sentinel_context = LoggingContext.current_context()
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kr = keyring.Keyring(self.hs)
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def check_context(_, expected):
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self.assertEquals(
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LoggingContext.current_context().test_key, expected
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)
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lookup_1_deferred = defer.Deferred()
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lookup_2_deferred = defer.Deferred()
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with LoggingContext("one") as context_one:
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context_one.test_key = "one"
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wait_1_deferred = kr.wait_for_previous_lookups(
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["server1"],
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{"server1": lookup_1_deferred},
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)
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# there were no previous lookups, so the deferred should be ready
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self.assertTrue(wait_1_deferred.called)
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# ... so we should have preserved the LoggingContext.
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self.assertIs(LoggingContext.current_context(), context_one)
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wait_1_deferred.addBoth(check_context, "one")
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with LoggingContext("two") as context_two:
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context_two.test_key = "two"
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# set off another wait. It should block because the first lookup
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# hasn't yet completed.
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wait_2_deferred = kr.wait_for_previous_lookups(
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["server1"],
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{"server1": lookup_2_deferred},
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)
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self.assertFalse(wait_2_deferred.called)
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# ... so we should have reset the LoggingContext.
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self.assertIs(LoggingContext.current_context(), sentinel_context)
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wait_2_deferred.addBoth(check_context, "two")
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# let the first lookup complete (in the sentinel context)
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lookup_1_deferred.callback(None)
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# now the second wait should complete and restore our
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# loggingcontext.
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yield wait_2_deferred
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@defer.inlineCallbacks
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def test_verify_json_objects_for_server_awaits_previous_requests(self):
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key1 = signedjson.key.generate_signing_key(1)
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kr = keyring.Keyring(self.hs)
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json1 = {}
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signedjson.sign.sign_json(json1, "server1", key1)
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self.http_client.post_json.return_value = defer.Deferred()
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# start off a first set of lookups
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res_deferreds = kr.verify_json_objects_for_server(
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[("server1", json1),
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("server2", {})
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]
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)
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# the unsigned json should be rejected pretty quickly
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try:
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yield res_deferreds[1]
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self.assertFalse("unsigned json didn't cause a failure")
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except SynapseError:
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pass
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self.assertFalse(res_deferreds[0].called)
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# wait a tick for it to send the request to the perspectives server
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# (it first tries the datastore)
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yield async.sleep(0.005)
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self.http_client.post_json.assert_called_once()
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# a second request for a server with outstanding requests should
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# block rather than start a second call
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self.http_client.post_json.reset_mock()
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self.http_client.post_json.return_value = defer.Deferred()
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kr.verify_json_objects_for_server(
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[("server1", json1)],
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)
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yield async.sleep(0.005)
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self.http_client.post_json.assert_not_called()
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