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gitea/modules/templates
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>
2 years ago
..
eval Use a general Eval function for expressions in templates. (#23927) 2 years ago
scopedtmpl Make HTML template functions support context (#24056) 2 years ago
vars Implement FSFE REUSE for golang files (#21840) 2 years ago
base.go Improve template system and panic recovery (#24461) 2 years ago
dynamic.go Use a general approach to access custom/static/builtin assets (#24022) 2 years ago
helper.go Simplify template helper functions (#24570) 2 years ago
helper_test.go Implement FSFE REUSE for golang files (#21840) 2 years ago
htmlrenderer.go Rewrite logger system (#24726) 2 years ago
htmlrenderer_test.go Show friendly 500 error page to users and developers (#24110) 2 years ago
mailer.go Use globally shared HTMLRender (#24436) 2 years ago
static.go Use a general approach to access custom/static/builtin assets (#24022) 2 years ago
templates_bindata.go Implement FSFE REUSE for golang files (#21840) 2 years ago
util_avatar.go Improve template helper (#24417) 2 years ago
util_dict.go Update go tool dependencies, restructure lint targets (#24239) 2 years ago
util_json.go Improve template helper (#24417) 2 years ago
util_misc.go Simplify template helper functions (#24570) 2 years ago
util_render.go Modify luminance calculation and extract related functions into single files (#24586) 2 years ago
util_slice.go Improve template helper functions: string/slice (#24266) 2 years ago
util_string.go Improve template helper (#24417) 2 years ago
util_test.go Improve template helper functions: string/slice (#24266) 2 years ago