144 lines
5.4 KiB
Python
144 lines
5.4 KiB
Python
# Copyright 2022 The Matrix.org Foundation C.I.C.
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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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from twisted.internet import defer
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from synapse.replication.tcp.commands import PositionCommand
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from tests.replication._base import BaseMultiWorkerStreamTestCase
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class ChannelsTestCase(BaseMultiWorkerStreamTestCase):
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def test_subscribed_to_enough_redis_channels(self) -> None:
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# The default main process is subscribed to the USER_IP channel.
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self.assertCountEqual(
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self.hs.get_replication_command_handler()._channels_to_subscribe_to,
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["USER_IP"],
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)
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def test_background_worker_subscribed_to_user_ip(self) -> None:
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# The default main process is subscribed to the USER_IP channel.
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worker1 = self.make_worker_hs(
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"synapse.app.generic_worker",
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extra_config={
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"worker_name": "worker1",
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"run_background_tasks_on": "worker1",
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"redis": {"enabled": True},
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},
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)
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self.assertIn(
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"USER_IP",
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worker1.get_replication_command_handler()._channels_to_subscribe_to,
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)
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# Advance so the Redis subscription gets processed
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self.pump(0.1)
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# The counts are 2 because both the main process and the worker are subscribed.
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self.assertEqual(len(self._redis_server._subscribers_by_channel[b"test"]), 2)
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self.assertEqual(
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len(self._redis_server._subscribers_by_channel[b"test/USER_IP"]), 2
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)
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def test_non_background_worker_not_subscribed_to_user_ip(self) -> None:
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# The default main process is subscribed to the USER_IP channel.
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worker2 = self.make_worker_hs(
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"synapse.app.generic_worker",
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extra_config={
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"worker_name": "worker2",
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"run_background_tasks_on": "worker1",
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"redis": {"enabled": True},
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},
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)
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self.assertNotIn(
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"USER_IP",
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worker2.get_replication_command_handler()._channels_to_subscribe_to,
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)
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# Advance so the Redis subscription gets processed
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self.pump(0.1)
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# The count is 2 because both the main process and the worker are subscribed.
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self.assertEqual(len(self._redis_server._subscribers_by_channel[b"test"]), 2)
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# For USER_IP, the count is 1 because only the main process is subscribed.
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self.assertEqual(
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len(self._redis_server._subscribers_by_channel[b"test/USER_IP"]), 1
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)
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def test_wait_for_stream_position(self) -> None:
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"""Check that wait for stream position correctly waits for an update from the
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correct instance.
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"""
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store = self.hs.get_datastores().main
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cmd_handler = self.hs.get_replication_command_handler()
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data_handler = self.hs.get_replication_data_handler()
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worker1 = self.make_worker_hs(
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"synapse.app.generic_worker",
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extra_config={
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"worker_name": "worker1",
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"run_background_tasks_on": "worker1",
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"redis": {"enabled": True},
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},
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)
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cache_id_gen = worker1.get_datastores().main._cache_id_gen
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assert cache_id_gen is not None
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self.replicate()
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# First, make sure the master knows that `worker1` exists.
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initial_token = cache_id_gen.get_current_token()
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cmd_handler.send_command(
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PositionCommand("caches", "worker1", initial_token, initial_token)
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)
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self.replicate()
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# Next send out a normal RDATA, and check that waiting for that stream
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# ID returns immediately.
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ctx = cache_id_gen.get_next()
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next_token = self.get_success(ctx.__aenter__())
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self.get_success(ctx.__aexit__(None, None, None))
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self.get_success(
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data_handler.wait_for_stream_position("worker1", "caches", next_token)
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)
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# `wait_for_stream_position` should only return once master receives a
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# notification that `next_token` has persisted.
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ctx_worker1 = cache_id_gen.get_next()
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next_token = self.get_success(ctx_worker1.__aenter__())
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d = defer.ensureDeferred(
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data_handler.wait_for_stream_position("worker1", "caches", next_token)
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)
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self.assertFalse(d.called)
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# ... updating the cache ID gen on the master still shouldn't cause the
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# deferred to wake up.
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assert store._cache_id_gen is not None
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ctx = store._cache_id_gen.get_next()
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self.get_success(ctx.__aenter__())
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self.get_success(ctx.__aexit__(None, None, None))
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d = defer.ensureDeferred(
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data_handler.wait_for_stream_position("worker1", "caches", next_token)
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)
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self.assertFalse(d.called)
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# ... but worker1 finishing (and so sending an update) should.
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self.get_success(ctx_worker1.__aexit__(None, None, None))
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self.assertTrue(d.called)
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