Ayesha Waseem 4a8532b259 Fix logging breaking after a SIGHUP reload when stdio is redirected to the logs (#20402) ...

Reloading the log config on SIGHUP writes every record back into
Twisted's logging. `redirect_stdio_to_logs()` replaces `sys.stderr` with
a `LoggingFile` after startup, and `_load_logging_config` then rebuilds
`StreamHandler`s on it, so records hit the `logging during logging`
guard in `one_time_logging_setup` and JSON lines get wrapped a second
time.

`dictConfig` now runs with `sys.__stdout__` and `sys.__stderr__` swapped
in, and the redirected streams are put back afterwards, including when
the config is invalid. `tests/config/test_logger.py` covers both. Not
covered: Windows and configs that use a `FileHandler`.

Fixes #20091

### Pull Request Checklist

* [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).
* [x] [Code
style](https://element-hq.github.io/synapse/latest/code_style.html) is
correct (ruff check, ruff format and mypy run on the changed files)

2026-11-09 11:31:56 +00:00

..

__init__.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test___main__.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test_api.py

MSC4311: invites and knocks should contain the create event (#19722)

2026-04-27 14:04:07 -05:00

test_appservice.py

Fix a couple type annotations in the RootConfig/Config (#18409)

2025-05-13 10:22:15 -05:00

test_background_update.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test_base.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test_cache.py

Cleanly shutdown SynapseHomeServer object (#18828)

2025-10-01 02:42:09 +00:00

test_database.py

Fix a couple type annotations in the RootConfig/Config (#18409)

2025-05-13 10:22:15 -05:00

test_experimental.py

Rate limiting, configurable TTL and correct auth responses for MSC4388 (sign-in with QR code) (#20404)

2026-11-05 15:00:12 +00:00

test_generate.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test_load.py

Remove legacy MSC3861 auth delegation support (#19895)

2026-07-02 12:25:11 +01:00

test_logger.py

Fix logging breaking after a SIGHUP reload when stdio is redirected to the logs (#20402)

2026-11-09 11:31:56 +00:00

test_oauth_delegation.py

Remove legacy MSC3861 auth delegation support (#19895)

2026-07-02 12:25:11 +01:00

test_ratelimiting.py

Force keyword-args for clear default_config(server_name="test") usage (#19849)

2026-06-12 09:45:22 -05:00

test_redis.py

Support configuring a username for Redis connections (#20187)

2026-09-15 17:16:47 +00:00

test_registration_config.py

Force keyword-args for clear default_config(server_name="test") usage (#19849)

2026-06-12 09:45:22 -05:00

test_room_directory.py

Introduce Clock.call_when_running(...) to include logcontext by default (#18944)

2025-09-22 10:27:59 -05:00

test_server_announcements.py

[Server Announcements] Admin API to send announcements and list the rooms (#20467)

2026-11-04 18:33:10 +00:00

test_server.py

Default request token errors to privacy-preserving responses (#20243)

2026-10-09 13:26:31 +01:00

test_task_scheduler_config.py

Make task scheduler concurrency configurable (#18308) (#20230)

2026-09-22 21:33:59 +00:00

test_tls.py

Bump Twisted in poetry.lock from 25.5.0 to 26.4.0 (#20259)

2026-09-29 17:50:55 +00:00

test_util.py

Correctly mention previous copyright (#16820)

2024-01-23 11:26:48 +00:00

test_workers.py

Write union types as X | Y where possible (#19111)

2025-11-06 14:02:33 -06:00

utils.py

Use type hinting generics in standard collections (#19046)

2025-10-22 16:48:19 -05:00