407 lines
14 KiB
Python
407 lines
14 KiB
Python
# Copyright 2021 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 unittest.mock import Mock
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import yaml
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from twisted.internet.defer import Deferred, ensureDeferred
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from twisted.test.proto_helpers import MemoryReactor
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from synapse.server import HomeServer
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from synapse.storage.background_updates import BackgroundUpdater
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from synapse.types import JsonDict
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from synapse.util import Clock
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from tests import unittest
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from tests.test_utils import make_awaitable, simple_async_mock
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from tests.unittest import override_config
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class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
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def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
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self.updates: BackgroundUpdater = self.hs.get_datastores().main.db_pool.updates
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# the base test class should have run the real bg updates for us
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self.assertTrue(
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self.get_success(self.updates.has_completed_background_updates())
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)
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self.update_handler = Mock()
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self.updates.register_background_update_handler(
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"test_update", self.update_handler
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)
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self.store = self.hs.get_datastores().main
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async def update(self, progress: JsonDict, count: int) -> int:
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duration_ms = 10
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await self.clock.sleep((count * duration_ms) / 1000)
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progress = {"my_key": progress["my_key"] + 1}
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await self.store.db_pool.runInteraction(
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"update_progress",
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self.updates._background_update_progress_txn,
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"test_update",
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progress,
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)
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return count
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def test_do_background_update(self) -> None:
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# the time we claim it takes to update one item when running the update
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duration_ms = 10
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# the target runtime for each bg update
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target_background_update_duration_ms = 100
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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res = self.get_success(
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self.updates.do_next_background_update(False),
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by=0.02,
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)
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self.assertFalse(res)
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# on the first call, we should get run with the default background update size
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self.update_handler.assert_called_once_with(
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{"my_key": 1}, self.updates.default_background_batch_size
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)
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# second step: complete the update
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# we should now get run with a much bigger number of items to update
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async def update(progress: JsonDict, count: int) -> int:
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self.assertEqual(progress, {"my_key": 2})
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self.assertAlmostEqual(
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count,
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target_background_update_duration_ms / duration_ms,
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places=0,
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)
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await self.updates._end_background_update("test_update")
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return count
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self.update_handler.side_effect = update
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self.update_handler.reset_mock()
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result = self.get_success(self.updates.do_next_background_update(False))
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self.assertFalse(result)
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self.update_handler.assert_called_once()
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# third step: we don't expect to be called any more
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self.update_handler.reset_mock()
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result = self.get_success(self.updates.do_next_background_update(False))
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self.assertTrue(result)
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self.assertFalse(self.update_handler.called)
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@override_config(
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yaml.safe_load(
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"""
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background_updates:
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default_batch_size: 20
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"""
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)
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)
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def test_background_update_default_batch_set_by_config(self) -> None:
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"""
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Test that the background update is run with the default_batch_size set by the config
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"""
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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res = self.get_success(
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self.updates.do_next_background_update(False),
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by=0.01,
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)
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self.assertFalse(res)
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# on the first call, we should get run with the default background update size specified in the config
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self.update_handler.assert_called_once_with({"my_key": 1}, 20)
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def test_background_update_default_sleep_behavior(self) -> None:
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"""
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Test default background update behavior, which is to sleep
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"""
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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self.updates.start_doing_background_updates()
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# 2: advance the reactor less than the default sleep duration (1000ms)
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self.reactor.pump([0.5])
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# check that an update has not been run
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self.update_handler.assert_not_called()
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# advance reactor past default sleep duration
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self.reactor.pump([1])
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# check that update has been run
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self.update_handler.assert_called()
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@override_config(
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yaml.safe_load(
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"""
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background_updates:
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sleep_duration_ms: 500
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"""
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)
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)
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def test_background_update_sleep_set_in_config(self) -> None:
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"""
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Test that changing the sleep time in the config changes how long it sleeps
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"""
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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self.updates.start_doing_background_updates()
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# 2: advance the reactor less than the configured sleep duration (500ms)
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self.reactor.pump([0.45])
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# check that an update has not been run
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self.update_handler.assert_not_called()
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# advance reactor past config sleep duration but less than default duration
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self.reactor.pump([0.75])
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# check that update has been run
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self.update_handler.assert_called()
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@override_config(
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yaml.safe_load(
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"""
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background_updates:
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sleep_enabled: false
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"""
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)
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)
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def test_disabling_background_update_sleep(self) -> None:
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"""
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Test that disabling sleep in the config results in bg update not sleeping
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"""
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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self.updates.start_doing_background_updates()
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# 2: advance the reactor very little
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self.reactor.pump([0.025])
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# check that an update has run
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self.update_handler.assert_called()
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@override_config(
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yaml.safe_load(
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"""
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background_updates:
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background_update_duration_ms: 500
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"""
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)
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)
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def test_background_update_duration_set_in_config(self) -> None:
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"""
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Test that the desired duration set in the config is used in determining batch size
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"""
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# Duration of one background update item
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duration_ms = 10
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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self.update_handler.side_effect = self.update
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self.update_handler.reset_mock()
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res = self.get_success(
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self.updates.do_next_background_update(False),
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by=0.02,
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)
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self.assertFalse(res)
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# the first update was run with the default batch size, this should be run with 500ms as the
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# desired duration
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async def update(progress: JsonDict, count: int) -> int:
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self.assertEqual(progress, {"my_key": 2})
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self.assertAlmostEqual(
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count,
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500 / duration_ms,
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places=0,
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)
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await self.updates._end_background_update("test_update")
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return count
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self.update_handler.side_effect = update
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self.get_success(self.updates.do_next_background_update(False))
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@override_config(
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yaml.safe_load(
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"""
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background_updates:
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min_batch_size: 5
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"""
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)
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)
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def test_background_update_min_batch_set_in_config(self) -> None:
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"""
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Test that the minimum batch size set in the config is used
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"""
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# a very long-running individual update
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duration_ms = 50
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self.get_success(
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self.store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
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)
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)
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# Run the update with the long-running update item
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async def update_long(progress: JsonDict, count: int) -> int:
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await self.clock.sleep((count * duration_ms) / 1000)
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progress = {"my_key": progress["my_key"] + 1}
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await self.store.db_pool.runInteraction(
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"update_progress",
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self.updates._background_update_progress_txn,
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"test_update",
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progress,
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)
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return count
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self.update_handler.side_effect = update_long
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self.update_handler.reset_mock()
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res = self.get_success(
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self.updates.do_next_background_update(False),
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by=1,
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)
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self.assertFalse(res)
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# the first update was run with the default batch size, this should be run with minimum batch size
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# as the first items took a very long time
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async def update_short(progress: JsonDict, count: int) -> int:
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self.assertEqual(progress, {"my_key": 2})
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self.assertEqual(count, 5)
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await self.updates._end_background_update("test_update")
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return count
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self.update_handler.side_effect = update_short
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self.get_success(self.updates.do_next_background_update(False))
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class BackgroundUpdateControllerTestCase(unittest.HomeserverTestCase):
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def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
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self.updates: BackgroundUpdater = self.hs.get_datastores().main.db_pool.updates
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# the base test class should have run the real bg updates for us
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self.assertTrue(
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self.get_success(self.updates.has_completed_background_updates())
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)
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self.update_deferred: Deferred[int] = Deferred()
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self.update_handler = Mock(return_value=self.update_deferred)
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self.updates.register_background_update_handler(
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"test_update", self.update_handler
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)
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# Mock out the AsyncContextManager
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class MockCM:
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__aenter__ = simple_async_mock(return_value=None)
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__aexit__ = simple_async_mock(return_value=None)
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self._update_ctx_manager = MockCM
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# Mock out the `update_handler` callback
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self._on_update = Mock(return_value=self._update_ctx_manager())
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# Define a default batch size value that's not the same as the internal default
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# value (100).
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self._default_batch_size = 500
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# Register the callbacks with more mocks
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self.hs.get_module_api().register_background_update_controller_callbacks(
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on_update=self._on_update,
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min_batch_size=Mock(return_value=make_awaitable(self._default_batch_size)),
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default_batch_size=Mock(
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return_value=make_awaitable(self._default_batch_size),
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),
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)
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def test_controller(self) -> None:
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store = self.hs.get_datastores().main
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self.get_success(
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store.db_pool.simple_insert(
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"background_updates",
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values={"update_name": "test_update", "progress_json": "{}"},
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)
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)
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# Set the return value for the context manager.
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enter_defer: Deferred[int] = Deferred()
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self._update_ctx_manager.__aenter__ = Mock(return_value=enter_defer)
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# Start the background update.
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do_update_d = ensureDeferred(self.updates.do_next_background_update(True))
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self.pump()
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# `run_update` should have been called, but the update handler won't be
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# called until the `enter_defer` (returned by `__aenter__`) is resolved.
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self._on_update.assert_called_once_with(
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"test_update",
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"master",
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False,
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)
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self.assertFalse(do_update_d.called)
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self.assertFalse(self.update_deferred.called)
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# Resolving the `enter_defer` should call the update handler, which then
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# blocks.
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enter_defer.callback(100)
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self.pump()
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self.update_handler.assert_called_once_with({}, self._default_batch_size)
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self.assertFalse(self.update_deferred.called)
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self._update_ctx_manager.__aexit__.assert_not_called()
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# Resolving the update handler deferred should cause the
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# `do_next_background_update` to finish and return
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self.update_deferred.callback(100)
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self.pump()
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self._update_ctx_manager.__aexit__.assert_called()
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self.get_success(do_update_d)
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