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Add config settings for background update parameters (#11980)

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Shay 2022-03-11 10:46:45 -08:00 • committed by GitHub
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9 changed files with 430 additions and 34 deletions
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58
tests/config/test_background_update.py Normal file
View file

@ -0,0 +1,58 @@
# Copyright 2022 The Matrix.org Foundation 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 yaml
from synapse.storage.background_updates import BackgroundUpdater
from tests.unittest import HomeserverTestCase, override_config
class BackgroundUpdateConfigTestCase(HomeserverTestCase):
# Tests that the default values in the config are correctly loaded. Note that the default
# values are loaded when the corresponding config options are commented out, which is why there isn't
# a config specified here.
def test_default_configuration(self):
background_updater = BackgroundUpdater(
self.hs, self.hs.get_datastores().main.db_pool
)
self.assertEqual(background_updater.minimum_background_batch_size, 1)
self.assertEqual(background_updater.default_background_batch_size, 100)
self.assertEqual(background_updater.sleep_enabled, True)
self.assertEqual(background_updater.sleep_duration_ms, 1000)
self.assertEqual(background_updater.update_duration_ms, 100)
# Tests that non-default values for the config options are properly picked up and passed on.
@override_config(
yaml.safe_load(
"""
background_updates:
background_update_duration_ms: 1000
sleep_enabled: false
sleep_duration_ms: 600
min_batch_size: 5
default_batch_size: 50
"""
)
)
def test_custom_configuration(self):
background_updater = BackgroundUpdater(
self.hs, self.hs.get_datastores().main.db_pool
)
self.assertEqual(background_updater.minimum_background_batch_size, 5)
self.assertEqual(background_updater.default_background_batch_size, 50)
self.assertEqual(background_updater.sleep_enabled, False)
self.assertEqual(background_updater.sleep_duration_ms, 600)
self.assertEqual(background_updater.update_duration_ms, 1000)

9
tests/rest/admin/test_background_updates.py
View file

@ -39,6 +39,7 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
self.store = hs.get_datastores().main
self.admin_user = self.register_user("admin", "pass", admin=True)
self.admin_user_tok = self.login("admin", "pass")
self.updater = BackgroundUpdater(hs, self.store.db_pool)
@parameterized.expand(
[
@ -135,10 +136,10 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
"""Test the status API works with a background update."""
# Create a new background update
self._register_bg_update()
self.store.db_pool.updates.start_doing_background_updates()
self.reactor.pump([1.0, 1.0, 1.0])
channel = self.make_request(
@ -158,7 +159,7 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
"average_items_per_ms": 0.1,
"total_duration_ms": 1000.0,
"total_item_count": (
BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE
self.updater.default_background_batch_size
),
}
},
@ -213,7 +214,7 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
"average_items_per_ms": 0.1,
"total_duration_ms": 1000.0,
"total_item_count": (
BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE
self.updater.default_background_batch_size
),
}
},
@ -242,7 +243,7 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
"average_items_per_ms": 0.1,
"total_duration_ms": 1000.0,
"total_item_count": (
BackgroundUpdater.DEFAULT_BACKGROUND_BATCH_SIZE
self.updater.default_background_batch_size
),
}
},

253
tests/storage/test_background_update.py
View file

@ -14,12 +14,15 @@
from unittest.mock import Mock
import yaml
from twisted.internet.defer import Deferred, ensureDeferred
from synapse.storage.background_updates import BackgroundUpdater
from tests import unittest
from tests.test_utils import make_awaitable, simple_async_mock
from tests.unittest import override_config
class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
@ -34,6 +37,19 @@ class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
self.updates.register_background_update_handler(
"test_update", self.update_handler
)
self.store = self.hs.get_datastores().main
async def update(self, progress, count):
duration_ms = 10
await self.clock.sleep((count * duration_ms) / 1000)
progress = {"my_key": progress["my_key"] + 1}
await self.store.db_pool.runInteraction(
"update_progress",
self.updates._background_update_progress_txn,
"test_update",
progress,
)
return count
def test_do_background_update(self):
# the time we claim it takes to update one item when running the update
@ -42,27 +58,14 @@ class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
# the target runtime for each bg update
target_background_update_duration_ms = 100
store = self.hs.get_datastores().main
self.get_success(
store.db_pool.simple_insert(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
# first step: make a bit of progress
async def update(progress, count):
await self.clock.sleep((count * duration_ms) / 1000)
progress = {"my_key": progress["my_key"] + 1}
await store.db_pool.runInteraction(
"update_progress",
self.updates._background_update_progress_txn,
"test_update",
progress,
)
return count
self.update_handler.side_effect = update
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
res = self.get_success(
self.updates.do_next_background_update(False),
@ -72,7 +75,7 @@ class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
# on the first call, we should get run with the default background update size
self.update_handler.assert_called_once_with(
{"my_key": 1}, self.updates.DEFAULT_BACKGROUND_BATCH_SIZE
{"my_key": 1}, self.updates.default_background_batch_size
)
# second step: complete the update
@ -99,6 +102,224 @@ class BackgroundUpdateTestCase(unittest.HomeserverTestCase):
self.assertTrue(result)
self.assertFalse(self.update_handler.called)
@override_config(
yaml.safe_load(
"""
background_updates:
default_batch_size: 20
"""
)
)
def test_background_update_default_batch_set_by_config(self):
"""
Test that the background update is run with the default_batch_size set by the config
"""
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
res = self.get_success(
self.updates.do_next_background_update(False),
by=0.01,
)
self.assertFalse(res)
# on the first call, we should get run with the default background update size specified in the config
self.update_handler.assert_called_once_with({"my_key": 1}, 20)
def test_background_update_default_sleep_behavior(self):
"""
Test default background update behavior, which is to sleep
"""
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
self.updates.start_doing_background_updates(),
# 2: advance the reactor less than the default sleep duration (1000ms)
self.reactor.pump([0.5])
# check that an update has not been run
self.update_handler.assert_not_called()
# advance reactor past default sleep duration
self.reactor.pump([1])
# check that update has been run
self.update_handler.assert_called()
@override_config(
yaml.safe_load(
"""
background_updates:
sleep_duration_ms: 500
"""
)
)
def test_background_update_sleep_set_in_config(self):
"""
Test that changing the sleep time in the config changes how long it sleeps
"""
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
self.updates.start_doing_background_updates(),
# 2: advance the reactor less than the configured sleep duration (500ms)
self.reactor.pump([0.45])
# check that an update has not been run
self.update_handler.assert_not_called()
# advance reactor past config sleep duration but less than default duration
self.reactor.pump([0.75])
# check that update has been run
self.update_handler.assert_called()
@override_config(
yaml.safe_load(
"""
background_updates:
sleep_enabled: false
"""
)
)
def test_disabling_background_update_sleep(self):
"""
Test that disabling sleep in the config results in bg update not sleeping
"""
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
self.updates.start_doing_background_updates(),
# 2: advance the reactor very little
self.reactor.pump([0.025])
# check that an update has run
self.update_handler.assert_called()
@override_config(
yaml.safe_load(
"""
background_updates:
background_update_duration_ms: 500
"""
)
)
def test_background_update_duration_set_in_config(self):
"""
Test that the desired duration set in the config is used in determining batch size
"""
# Duration of one background update item
duration_ms = 10
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
self.update_handler.side_effect = self.update
self.update_handler.reset_mock()
res = self.get_success(
self.updates.do_next_background_update(False),
by=0.02,
)
self.assertFalse(res)
# the first update was run with the default batch size, this should be run with 500ms as the
# desired duration
async def update(progress, count):
self.assertEqual(progress, {"my_key": 2})
self.assertAlmostEqual(
count,
500 / duration_ms,
places=0,
)
await self.updates._end_background_update("test_update")
return count
self.update_handler.side_effect = update
self.get_success(self.updates.do_next_background_update(False))
@override_config(
yaml.safe_load(
"""
background_updates:
min_batch_size: 5
"""
)
)
def test_background_update_min_batch_set_in_config(self):
"""
Test that the minimum batch size set in the config is used
"""
# a very long-running individual update
duration_ms = 50
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
values={"update_name": "test_update", "progress_json": '{"my_key": 1}'},
)
)
# Run the update with the long-running update item
async def update(progress, count):
await self.clock.sleep((count * duration_ms) / 1000)
progress = {"my_key": progress["my_key"] + 1}
await self.store.db_pool.runInteraction(
"update_progress",
self.updates._background_update_progress_txn,
"test_update",
progress,
)
return count
self.update_handler.side_effect = update
self.update_handler.reset_mock()
res = self.get_success(
self.updates.do_next_background_update(False),
by=1,
)
self.assertFalse(res)
# the first update was run with the default batch size, this should be run with minimum batch size
# as the first items took a very long time
async def update(progress, count):
self.assertEqual(progress, {"my_key": 2})
self.assertEqual(count, 5)
await self.updates._end_background_update("test_update")
return count
self.update_handler.side_effect = update
self.get_success(self.updates.do_next_background_update(False))
class BackgroundUpdateControllerTestCase(unittest.HomeserverTestCase):
def prepare(self, reactor, clock, homeserver):