gitea/modules/private/manager.go
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>
2023-05-21 22:35:11 +00:00

114 lines
3.8 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package private
import (
"context"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"time"
"code.gitea.io/gitea/modules/setting"
)
// Shutdown calls the internal shutdown function
func Shutdown(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/shutdown"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Shutting down")
}
// Restart calls the internal restart function
func Restart(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/restart"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Restarting")
}
// FlushOptions represents the options for the flush call
type FlushOptions struct {
Timeout time.Duration
NonBlocking bool
}
// FlushQueues calls the internal flush-queues function
func FlushQueues(ctx context.Context, timeout time.Duration, nonBlocking bool) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/flush-queues"
req := newInternalRequest(ctx, reqURL, "POST", FlushOptions{Timeout: timeout, NonBlocking: nonBlocking})
if timeout > 0 {
req.SetReadWriteTimeout(timeout + 10*time.Second)
}
return requestJSONUserMsg(req, "Flushed")
}
// PauseLogging pauses logging
func PauseLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/pause-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Paused")
}
// ResumeLogging resumes logging
func ResumeLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/resume-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Restarted")
}
// ReleaseReopenLogging releases and reopens logging files
func ReleaseReopenLogging(ctx context.Context) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/release-and-reopen-logging"
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Logging Restarted")
}
// SetLogSQL sets database logging
func SetLogSQL(ctx context.Context, on bool) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/set-log-sql?on=" + strconv.FormatBool(on)
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Log SQL setting set")
}
// LoggerOptions represents the options for the add logger call
type LoggerOptions struct {
Logger string
Writer string
Mode string
Config map[string]interface{}
}
// AddLogger adds a logger
func AddLogger(ctx context.Context, logger, writer, mode string, config map[string]interface{}) ResponseExtra {
reqURL := setting.LocalURL + "api/internal/manager/add-logger"
req := newInternalRequest(ctx, reqURL, "POST", LoggerOptions{
Logger: logger,
Writer: writer,
Mode: mode,
Config: config,
})
return requestJSONUserMsg(req, "Added")
}
// RemoveLogger removes a logger
func RemoveLogger(ctx context.Context, logger, writer string) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/manager/remove-logger/%s/%s", url.PathEscape(logger), url.PathEscape(writer))
req := newInternalRequest(ctx, reqURL, "POST")
return requestJSONUserMsg(req, "Removed")
}
// Processes return the current processes from this gitea instance
func Processes(ctx context.Context, out io.Writer, flat, noSystem, stacktraces, json bool, cancel string) ResponseExtra {
reqURL := setting.LocalURL + fmt.Sprintf("api/internal/manager/processes?flat=%t&no-system=%t&stacktraces=%t&json=%t&cancel-pid=%s", flat, noSystem, stacktraces, json, url.QueryEscape(cancel))
req := newInternalRequest(ctx, reqURL, "GET")
callback := func(resp *http.Response, extra *ResponseExtra) {
_, extra.Error = io.Copy(out, resp.Body)
}
_, extra := requestJSONResp(req, &callback)
return extra
}