Bulk refactor `Histogram` metrics to be homeserver-scoped. We also add lints to make sure that new `Histogram` metrics don't sneak in without using the `server_name` label (`SERVER_NAME_LABEL`). Part of https://github.com/element-hq/synapse/issues/18592 ### Testing strategy 1. Add the `metrics` listener in your `homeserver.yaml` ```yaml listeners: # This is just showing how to configure metrics either way # # `http` `metrics` resource - port: 9322 type: http bind_addresses: ['127.0.0.1'] resources: - names: [metrics] compress: false # `metrics` listener - port: 9323 type: metrics bind_addresses: ['127.0.0.1'] ``` 1. Start the homeserver: `poetry run synapse_homeserver --config-path homeserver.yaml` 1. Fetch `http://localhost:9322/_synapse/metrics` and/or `http://localhost:9323/metrics` 1. Observe response includes the TODO metrics with the `server_name` label ### Todo - [x] Wait for https://github.com/element-hq/synapse/pull/18656 to merge ### Dev notes ``` LoggingDatabaseConnection make_conn make_pool make_fake_db_pool ``` ### Pull Request Checklist <!-- Please read https://element-hq.github.io/synapse/latest/development/contributing_guide.html before submitting your pull request --> * [x] Pull request is based on the develop branch * [x] Pull request includes a [changelog file](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#changelog). The entry should: - Be a short description of your change which makes sense to users. "Fixed a bug that prevented receiving messages from other servers." instead of "Moved X method from `EventStore` to `EventWorkerStore`.". - Use markdown where necessary, mostly for `code blocks`. - End with either a period (.) or an exclamation mark (!). - Start with a capital letter. - Feel free to credit yourself, by adding a sentence "Contributed by @github_username." or "Contributed by [Your Name]." to the end of the entry. * [x] [Code style](https://element-hq.github.io/synapse/latest/code_style.html) is correct (run the [linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters))
68 lines
2.4 KiB
Python
68 lines
2.4 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 2022 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.mock import MagicMock, patch
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from synapse.storage.database import make_conn
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from synapse.storage.engines import PostgresEngine
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from synapse.storage.engines._base import IncorrectDatabaseSetup
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from tests.unittest import HomeserverTestCase
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from tests.utils import USE_POSTGRES_FOR_TESTS
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class UnsafeLocaleTest(HomeserverTestCase):
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if not USE_POSTGRES_FOR_TESTS:
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skip = "Requires Postgres"
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@patch("synapse.storage.engines.postgres.PostgresEngine.get_db_locale")
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def test_unsafe_locale(self, mock_db_locale: MagicMock) -> None:
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mock_db_locale.return_value = ("B", "B")
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database = self.hs.get_datastores().databases[0]
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server_name = self.hs.hostname
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db_conn = make_conn(
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db_config=database._database_config,
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engine=database.engine,
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default_txn_name="test_unsafe",
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server_name=server_name,
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)
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with self.assertRaises(IncorrectDatabaseSetup):
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database.engine.check_database(db_conn)
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with self.assertRaises(IncorrectDatabaseSetup):
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database.engine.check_new_database(db_conn)
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db_conn.close()
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def test_safe_locale(self) -> None:
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database = self.hs.get_datastores().databases[0]
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assert isinstance(database.engine, PostgresEngine)
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server_name = self.hs.hostname
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db_conn = make_conn(
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db_config=database._database_config,
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engine=database.engine,
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default_txn_name="test_unsafe",
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server_name=server_name,
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)
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with db_conn.cursor() as txn:
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res = database.engine.get_db_locale(txn)
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self.assertEqual(res, ("C", "C"))
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db_conn.close()
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