gitea/main.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

205 lines
5.3 KiB
Go

// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2016 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
// Gitea (git with a cup of tea) is a painless self-hosted Git Service.
package main // import "code.gitea.io/gitea"
import (
"fmt"
"os"
"runtime"
"strings"
"time"
"code.gitea.io/gitea/cmd"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
// register supported doc types
_ "code.gitea.io/gitea/modules/markup/asciicast"
_ "code.gitea.io/gitea/modules/markup/console"
_ "code.gitea.io/gitea/modules/markup/csv"
_ "code.gitea.io/gitea/modules/markup/markdown"
_ "code.gitea.io/gitea/modules/markup/orgmode"
"github.com/urfave/cli"
)
var (
// Version holds the current Gitea version
Version = "development"
// Tags holds the build tags used
Tags = ""
// MakeVersion holds the current Make version if built with make
MakeVersion = ""
originalAppHelpTemplate = ""
originalCommandHelpTemplate = ""
originalSubcommandHelpTemplate = ""
)
func init() {
setting.AppVer = Version
setting.AppBuiltWith = formatBuiltWith()
setting.AppStartTime = time.Now().UTC()
// Grab the original help templates
originalAppHelpTemplate = cli.AppHelpTemplate
originalCommandHelpTemplate = cli.CommandHelpTemplate
originalSubcommandHelpTemplate = cli.SubcommandHelpTemplate
}
func main() {
app := cli.NewApp()
app.Name = "Gitea"
app.Usage = "A painless self-hosted Git service"
app.Description = `By default, gitea will start serving using the webserver with no
arguments - which can alternatively be run by running the subcommand web.`
app.Version = Version + formatBuiltWith()
app.Commands = []cli.Command{
cmd.CmdWeb,
cmd.CmdServ,
cmd.CmdHook,
cmd.CmdDump,
cmd.CmdCert,
cmd.CmdAdmin,
cmd.CmdGenerate,
cmd.CmdMigrate,
cmd.CmdKeys,
cmd.CmdConvert,
cmd.CmdDoctor,
cmd.CmdManager,
cmd.Cmdembedded,
cmd.CmdMigrateStorage,
cmd.CmdDocs,
cmd.CmdDumpRepository,
cmd.CmdRestoreRepository,
cmd.CmdActions,
}
// Now adjust these commands to add our global configuration options
// First calculate the default paths and set the AppHelpTemplates in this context
setting.SetCustomPathAndConf("", "", "")
setAppHelpTemplates()
// default configuration flags
defaultFlags := []cli.Flag{
cli.StringFlag{
Name: "custom-path, C",
Value: setting.CustomPath,
Usage: "Custom path file path",
},
cli.StringFlag{
Name: "config, c",
Value: setting.CustomConf,
Usage: "Custom configuration file path",
},
cli.VersionFlag,
cli.StringFlag{
Name: "work-path, w",
Value: setting.AppWorkPath,
Usage: "Set the gitea working path",
},
}
// Set the default to be equivalent to cmdWeb and add the default flags
app.Flags = append(app.Flags, cmd.CmdWeb.Flags...)
app.Flags = append(app.Flags, defaultFlags...)
app.Action = cmd.CmdWeb.Action
// Add functions to set these paths and these flags to the commands
app.Before = establishCustomPath
for i := range app.Commands {
setFlagsAndBeforeOnSubcommands(&app.Commands[i], defaultFlags, establishCustomPath)
}
app.EnableBashCompletion = true
err := app.Run(os.Args)
if err != nil {
log.Fatal("Failed to run app with %s: %v", os.Args, err)
}
log.GetManager().Close()
}
func setFlagsAndBeforeOnSubcommands(command *cli.Command, defaultFlags []cli.Flag, before cli.BeforeFunc) {
command.Flags = append(command.Flags, defaultFlags...)
command.Before = establishCustomPath
for i := range command.Subcommands {
setFlagsAndBeforeOnSubcommands(&command.Subcommands[i], defaultFlags, before)
}
}
func establishCustomPath(ctx *cli.Context) error {
var providedCustom string
var providedConf string
var providedWorkPath string
currentCtx := ctx
for {
if len(providedCustom) != 0 && len(providedConf) != 0 && len(providedWorkPath) != 0 {
break
}
if currentCtx == nil {
break
}
if currentCtx.IsSet("custom-path") && len(providedCustom) == 0 {
providedCustom = currentCtx.String("custom-path")
}
if currentCtx.IsSet("config") && len(providedConf) == 0 {
providedConf = currentCtx.String("config")
}
if currentCtx.IsSet("work-path") && len(providedWorkPath) == 0 {
providedWorkPath = currentCtx.String("work-path")
}
currentCtx = currentCtx.Parent()
}
setting.SetCustomPathAndConf(providedCustom, providedConf, providedWorkPath)
setAppHelpTemplates()
if ctx.IsSet("version") {
cli.ShowVersion(ctx)
os.Exit(0)
}
return nil
}
func setAppHelpTemplates() {
cli.AppHelpTemplate = adjustHelpTemplate(originalAppHelpTemplate)
cli.CommandHelpTemplate = adjustHelpTemplate(originalCommandHelpTemplate)
cli.SubcommandHelpTemplate = adjustHelpTemplate(originalSubcommandHelpTemplate)
}
func adjustHelpTemplate(originalTemplate string) string {
overridden := ""
if _, ok := os.LookupEnv("GITEA_CUSTOM"); ok {
overridden = "(GITEA_CUSTOM)"
}
return fmt.Sprintf(`%s
DEFAULT CONFIGURATION:
CustomPath: %s %s
CustomConf: %s
AppPath: %s
AppWorkPath: %s
`, originalTemplate, setting.CustomPath, overridden, setting.CustomConf, setting.AppPath, setting.AppWorkPath)
}
func formatBuiltWith() string {
version := runtime.Version()
if len(MakeVersion) > 0 {
version = MakeVersion + ", " + runtime.Version()
}
if len(Tags) == 0 {
return " built with " + version
}
return " built with " + version + " : " + strings.ReplaceAll(Tags, " ", ", ")
}