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wxiaoguang 4647660776
Rewrite logger system (#24726)
## ⚠️ Breaking

The `log.<mode>.<logger>` style config has been dropped. If you used it,
please check the new config manual & app.example.ini to make your
instance output logs as expected.

Although many legacy options still work, it's encouraged to upgrade to
the new options.

The SMTP logger is deleted because SMTP is not suitable to collect logs.

If you have manually configured Gitea log options, please confirm the
logger system works as expected after upgrading.

## Description

Close #12082 and maybe more log-related issues, resolve some related
FIXMEs in old code (which seems unfixable before)

Just like rewriting queue #24505 : make code maintainable, clear legacy
bugs, and add the ability to support more writers (eg: JSON, structured
log)

There is a new document (with examples): `logging-config.en-us.md`

This PR is safer than the queue rewriting, because it's just for
logging, it won't break other logic.

## The old problems

The logging system is quite old and difficult to maintain:
* Unclear concepts: Logger, NamedLogger, MultiChannelledLogger,
SubLogger, EventLogger, WriterLogger etc
* Some code is diffuclt to konw whether it is right:
`log.DelNamedLogger("console")` vs `log.DelNamedLogger(log.DEFAULT)` vs
`log.DelLogger("console")`
* The old system heavily depends on ini config system, it's difficult to
create new logger for different purpose, and it's very fragile.
* The "color" trick is difficult to use and read, many colors are
unnecessary, and in the future structured log could help
* It's difficult to add other log formats, eg: JSON format
* The log outputer doesn't have full control of its goroutine, it's
difficult to make outputer have advanced behaviors
* The logs could be lost in some cases: eg: no Fatal error when using
CLI.
* Config options are passed by JSON, which is quite fragile.
* INI package makes the KEY in `[log]` section visible in `[log.sub1]`
and `[log.sub1.subA]`, this behavior is quite fragile and would cause
more unclear problems, and there is no strong requirement to support
`log.<mode>.<logger>` syntax.


## The new design

See `logger.go` for documents.


## Screenshot

<details>


![image](https://github.com/go-gitea/gitea/assets/2114189/4462d713-ba39-41f5-bb08-de912e67e1ff)


![image](https://github.com/go-gitea/gitea/assets/2114189/b188035e-f691-428b-8b2d-ff7b2199b2f9)


![image](https://github.com/go-gitea/gitea/assets/2114189/132e9745-1c3b-4e00-9e0d-15eaea495dee)

</details>

## TODO

* [x] add some new tests
* [x] fix some tests
* [x] test some sub-commands (manually ....)

---------

Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Giteabot <teabot@gitea.io>
1 year ago
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color.go Rewrite logger system (#24726) 1 year ago
color_console.go Rewrite logger system (#24726) 1 year ago
color_console_other.go Rewrite logger system (#24726) 1 year ago
color_console_windows.go Rewrite logger system (#24726) 1 year ago
color_router.go Rewrite logger system (#24726) 1 year ago
event_format.go Rewrite logger system (#24726) 1 year ago
event_format_test.go Rewrite logger system (#24726) 1 year ago
event_writer.go Rewrite logger system (#24726) 1 year ago
event_writer_base.go Rewrite logger system (#24726) 1 year ago
event_writer_conn.go Rewrite logger system (#24726) 1 year ago
event_writer_conn_test.go Rewrite logger system (#24726) 1 year ago
event_writer_console.go Rewrite logger system (#24726) 1 year ago
event_writer_file.go Rewrite logger system (#24726) 1 year ago
flags.go Rewrite logger system (#24726) 1 year ago
flags_test.go Rewrite logger system (#24726) 1 year ago
groutinelabel.go Update go dev dependencies (#22064) 2 years ago
groutinelabel_test.go Implement FSFE REUSE for golang files (#21840) 2 years ago
init.go Rewrite logger system (#24726) 1 year ago
level.go Rewrite logger system (#24726) 1 year ago
level_test.go Implement FSFE REUSE for golang files (#21840) 2 years ago
logger.go Rewrite logger system (#24726) 1 year ago
logger_global.go Rewrite logger system (#24726) 1 year ago
logger_impl.go Rewrite logger system (#24726) 1 year ago
logger_test.go Rewrite logger system (#24726) 1 year ago
manager.go Rewrite logger system (#24726) 1 year ago
manager_test.go Rewrite logger system (#24726) 1 year ago
misc.go Rewrite logger system (#24726) 1 year ago
stack.go Rewrite logger system (#24726) 1 year ago