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23740eaa3d
During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
243 lines
8.5 KiB
Python
243 lines
8.5 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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from unittest import mock
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from synapse.notifier import Notifier
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from synapse.replication.tcp.handler import ReplicationCommandHandler
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from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter
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from tests.unittest import HomeserverTestCase
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class RetryLimiterTestCase(HomeserverTestCase):
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def test_new_destination(self) -> None:
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"""A happy-path case with a new destination and a successful operation"""
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store = self.hs.get_datastores().main
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limiter = self.get_success(get_retry_limiter("test_dest", self.clock, store))
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# advance the clock a bit before making the request
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self.pump(1)
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with limiter:
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pass
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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self.assertIsNone(new_timings)
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def test_limiter(self) -> None:
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"""General test case which walks through the process of a failing request"""
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store = self.hs.get_datastores().main
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limiter = self.get_success(get_retry_limiter("test_dest", self.clock, store))
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min_retry_interval_ms = (
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self.hs.config.federation.destination_min_retry_interval_ms
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)
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retry_multiplier = self.hs.config.federation.destination_retry_multiplier
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self.pump(1)
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try:
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with limiter:
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self.pump(1)
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failure_ts = self.clock.time_msec()
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raise AssertionError("argh")
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except AssertionError:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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assert new_timings is not None
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self.assertEqual(new_timings.failure_ts, failure_ts)
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self.assertEqual(new_timings.retry_last_ts, failure_ts)
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self.assertEqual(new_timings.retry_interval, min_retry_interval_ms)
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# now if we try again we should get a failure
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self.get_failure(
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get_retry_limiter("test_dest", self.clock, store), NotRetryingDestination
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)
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#
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# advance the clock and try again
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#
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self.pump(min_retry_interval_ms)
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limiter = self.get_success(get_retry_limiter("test_dest", self.clock, store))
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self.pump(1)
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try:
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with limiter:
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self.pump(1)
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retry_ts = self.clock.time_msec()
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raise AssertionError("argh")
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except AssertionError:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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assert new_timings is not None
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self.assertEqual(new_timings.failure_ts, failure_ts)
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self.assertEqual(new_timings.retry_last_ts, retry_ts)
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self.assertGreaterEqual(
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new_timings.retry_interval, min_retry_interval_ms * retry_multiplier * 0.5
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)
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self.assertLessEqual(
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new_timings.retry_interval, min_retry_interval_ms * retry_multiplier * 2.0
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)
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#
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# one more go, with success
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#
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self.reactor.advance(min_retry_interval_ms * retry_multiplier * 2.0)
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limiter = self.get_success(get_retry_limiter("test_dest", self.clock, store))
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self.pump(1)
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with limiter:
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self.pump(1)
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# wait for the update to land
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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self.assertIsNone(new_timings)
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def test_notifier_replication(self) -> None:
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"""Ensure the notifier/replication client is called only when expected."""
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store = self.hs.get_datastores().main
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notifier = mock.Mock(spec=Notifier)
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replication_client = mock.Mock(spec=ReplicationCommandHandler)
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limiter = self.get_success(
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get_retry_limiter(
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"test_dest",
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self.clock,
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store,
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notifier=notifier,
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replication_client=replication_client,
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)
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)
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# The server is already up, nothing should occur.
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self.pump(1)
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with limiter:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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self.assertIsNone(new_timings)
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notifier.notify_remote_server_up.assert_not_called()
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replication_client.send_remote_server_up.assert_not_called()
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# Attempt again, but return an error. This will cause new retry timings, but
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# should not trigger server up notifications.
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self.pump(1)
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try:
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with limiter:
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raise AssertionError("argh")
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except AssertionError:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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# The exact retry timings are tested separately.
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self.assertIsNotNone(new_timings)
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notifier.notify_remote_server_up.assert_not_called()
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replication_client.send_remote_server_up.assert_not_called()
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# A second failing request should be treated as the above.
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self.pump(1)
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try:
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with limiter:
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raise AssertionError("argh")
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except AssertionError:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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# The exact retry timings are tested separately.
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self.assertIsNotNone(new_timings)
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notifier.notify_remote_server_up.assert_not_called()
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replication_client.send_remote_server_up.assert_not_called()
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# A final successful attempt should generate a server up notification.
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self.pump(1)
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with limiter:
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pass
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self.pump()
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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# The exact retry timings are tested separately.
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self.assertIsNone(new_timings)
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notifier.notify_remote_server_up.assert_called_once_with("test_dest")
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replication_client.send_remote_server_up.assert_called_once_with("test_dest")
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def test_max_retry_interval(self) -> None:
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"""Test that `destination_max_retry_interval` setting works as expected"""
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store = self.hs.get_datastores().main
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destination_max_retry_interval_ms = (
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self.hs.config.federation.destination_max_retry_interval_ms
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)
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self.get_success(get_retry_limiter("test_dest", self.clock, store))
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self.pump(1)
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failure_ts = self.clock.time_msec()
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# Simulate reaching destination_max_retry_interval
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self.get_success(
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store.set_destination_retry_timings(
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"test_dest",
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failure_ts=failure_ts,
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retry_last_ts=failure_ts,
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retry_interval=destination_max_retry_interval_ms,
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)
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)
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# Check it fails
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self.get_failure(
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get_retry_limiter("test_dest", self.clock, store), NotRetryingDestination
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)
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# Get past retry_interval and we can try again, and still throw an error to continue the backoff
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self.reactor.advance(destination_max_retry_interval_ms / 1000 + 1)
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limiter = self.get_success(get_retry_limiter("test_dest", self.clock, store))
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self.pump(1)
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try:
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with limiter:
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self.pump(1)
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raise AssertionError("argh")
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except AssertionError:
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pass
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self.pump()
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# retry_interval does not increase and stays at destination_max_retry_interval_ms
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new_timings = self.get_success(store.get_destination_retry_timings("test_dest"))
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assert new_timings is not None
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self.assertEqual(new_timings.retry_interval, destination_max_retry_interval_ms)
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# Check it fails
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self.get_failure(
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get_retry_limiter("test_dest", self.clock, store), NotRetryingDestination
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)
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