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# -*- coding: utf-8 -*-
# Copyright 2017 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.
from synapse.crypto import keyring
from synapse.util.logcontext import LoggingContext
from tests import utils, unittest
from twisted.internet import defer
class KeyringTestCase(unittest.TestCase):
@defer.inlineCallbacks
def setUp(self):
self.hs = yield utils.setup_test_homeserver(handlers=None)
@defer.inlineCallbacks
def test_wait_for_previous_lookups(self):
sentinel_context = LoggingContext.current_context()
kr = keyring.Keyring(self.hs)
def check_context(_, expected):
self.assertEquals(
LoggingContext.current_context().test_key, expected
)
lookup_1_deferred = defer.Deferred()
lookup_2_deferred = defer.Deferred()
with LoggingContext("one") as context_one:
context_one.test_key = "one"
wait_1_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_1_deferred},
)
# there were no previous lookups, so the deferred should be ready
self.assertTrue(wait_1_deferred.called)
# ... so we should have preserved the LoggingContext.
self.assertIs(LoggingContext.current_context(), context_one)
wait_1_deferred.addBoth(check_context, "one")
with LoggingContext("two") as context_two:
context_two.test_key = "two"
# set off another wait. It should block because the first lookup
# hasn't yet completed.
wait_2_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_2_deferred},
)
self.assertFalse(wait_2_deferred.called)
# ... so we should have reset the LoggingContext.
self.assertIs(LoggingContext.current_context(), sentinel_context)
wait_2_deferred.addBoth(check_context, "two")
# let the first lookup complete (in the sentinel context)
lookup_1_deferred.callback(None)
# now the second wait should complete and restore our
# loggingcontext.
yield wait_2_deferred
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