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 files changed, 177 insertions, 310 deletions

diff --git a/modules/setting/log.go b/modules/setting/log.go
index d9a9e5af8f..af64ea8d85 100644
--- a/modules/setting/log.go
+++ b/modules/setting/log.go
@@ -10,384 +10,251 @@ import (
 	"path"
 	"path/filepath"
 	"strings"
-	"sync"
 
-	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/util"
 )
 
-var (
-	filenameSuffix  = ""
-	descriptionLock = sync.RWMutex{}
-	logDescriptions = make(map[string]*LogDescription)
-)
+type LogGlobalConfig struct {
+	RootPath string
 
-// Log settings
-var Log struct {
+	Mode               string
 	Level              log.Level
-	StacktraceLogLevel string
-	RootPath           string
-	EnableSSHLog       bool
-	EnableXORMLog      bool
+	StacktraceLogLevel log.Level
+	BufferLen          int
 
-	DisableRouterLog bool
+	EnableSSHLog bool
 
-	EnableAccessLog   bool
 	AccessLogTemplate string
-	BufferLength      int64
 	RequestIDHeaders  []string
 }
 
-// GetLogDescriptions returns a race safe set of descriptions
-func GetLogDescriptions() map[string]*LogDescription {
-	descriptionLock.RLock()
-	defer descriptionLock.RUnlock()
-	descs := make(map[string]*LogDescription, len(logDescriptions))
-	for k, v := range logDescriptions {
-		subLogDescriptions := make([]SubLogDescription, len(v.SubLogDescriptions))
-		copy(subLogDescriptions, v.SubLogDescriptions)
-
-		descs[k] = &LogDescription{
-			Name:               v.Name,
-			SubLogDescriptions: subLogDescriptions,
-		}
-	}
-	return descs
-}
-
-// AddLogDescription adds a set of descriptions to the complete description
-func AddLogDescription(key string, description *LogDescription) {
-	descriptionLock.Lock()
-	defer descriptionLock.Unlock()
-	logDescriptions[key] = description
-}
+var Log LogGlobalConfig
 
-// AddSubLogDescription adds a sub log description
-func AddSubLogDescription(key string, subLogDescription SubLogDescription) bool {
-	descriptionLock.Lock()
-	defer descriptionLock.Unlock()
-	desc, ok := logDescriptions[key]
-	if !ok {
-		return false
-	}
-	for i, sub := range desc.SubLogDescriptions {
-		if sub.Name == subLogDescription.Name {
-			desc.SubLogDescriptions[i] = subLogDescription
-			return true
-		}
-	}
-	desc.SubLogDescriptions = append(desc.SubLogDescriptions, subLogDescription)
-	return true
-}
+const accessLogTemplateDefault = `{{.Ctx.RemoteHost}} - {{.Identity}} {{.Start.Format "[02/Jan/2006:15:04:05 -0700]" }} "{{.Ctx.Req.Method}} {{.Ctx.Req.URL.RequestURI}} {{.Ctx.Req.Proto}}" {{.ResponseWriter.Status}} {{.ResponseWriter.Size}} "{{.Ctx.Req.Referer}}" "{{.Ctx.Req.UserAgent}}"`
 
-// RemoveSubLogDescription removes a sub log description
-func RemoveSubLogDescription(key, name string) bool {
-	descriptionLock.Lock()
-	defer descriptionLock.Unlock()
-	desc, ok := logDescriptions[key]
-	if !ok {
-		return false
-	}
-	for i, sub := range desc.SubLogDescriptions {
-		if sub.Name == name {
-			desc.SubLogDescriptions = append(desc.SubLogDescriptions[:i], desc.SubLogDescriptions[i+1:]...)
-			return true
-		}
-	}
-	return false
-}
+func loadLogGlobalFrom(rootCfg ConfigProvider) {
+	sec := rootCfg.Section("log")
 
-type defaultLogOptions struct {
-	levelName      string // LogLevel
-	flags          string
-	filename       string // path.Join(LogRootPath, "gitea.log")
-	bufferLength   int64
-	disableConsole bool
-}
+	Log.Level = log.LevelFromString(sec.Key("LEVEL").MustString(log.INFO.String()))
+	Log.StacktraceLogLevel = log.LevelFromString(sec.Key("STACKTRACE_LEVEL").MustString(log.NONE.String()))
+	Log.BufferLen = sec.Key("BUFFER_LEN").MustInt(10000)
+	Log.Mode = sec.Key("MODE").MustString("console")
 
-func newDefaultLogOptions() defaultLogOptions {
-	return defaultLogOptions{
-		levelName:      Log.Level.String(),
-		flags:          "stdflags",
-		filename:       filepath.Join(Log.RootPath, "gitea.log"),
-		bufferLength:   10000,
-		disableConsole: false,
+	Log.RootPath = sec.Key("ROOT_PATH").MustString(path.Join(AppWorkPath, "log"))
+	if !filepath.IsAbs(Log.RootPath) {
+		Log.RootPath = filepath.Join(AppWorkPath, Log.RootPath)
 	}
-}
+	Log.RootPath = util.FilePathJoinAbs(Log.RootPath)
 
-// SubLogDescription describes a sublogger
-type SubLogDescription struct {
-	Name     string
-	Provider string
-	Config   string
-}
+	Log.EnableSSHLog = sec.Key("ENABLE_SSH_LOG").MustBool(false)
 
-// LogDescription describes a named logger
-type LogDescription struct {
-	Name               string
-	SubLogDescriptions []SubLogDescription
+	Log.AccessLogTemplate = sec.Key("ACCESS_LOG_TEMPLATE").MustString(accessLogTemplateDefault)
+	Log.RequestIDHeaders = sec.Key("REQUEST_ID_HEADERS").Strings(",")
 }
 
-func getLogLevel(section ConfigSection, key string, defaultValue log.Level) log.Level {
-	value := section.Key(key).MustString(defaultValue.String())
-	return log.FromString(value)
-}
+func prepareLoggerConfig(rootCfg ConfigProvider) {
+	sec := rootCfg.Section("log")
 
-func getStacktraceLogLevel(section ConfigSection, key, defaultValue string) string {
-	value := section.Key(key).MustString(defaultValue)
-	return log.FromString(value).String()
-}
+	if !sec.HasKey("logger.default.MODE") {
+		sec.Key("logger.default.MODE").MustString(",")
+	}
 
-func loadLogFrom(rootCfg ConfigProvider) {
-	sec := rootCfg.Section("log")
-	Log.Level = getLogLevel(sec, "LEVEL", log.INFO)
-	Log.StacktraceLogLevel = getStacktraceLogLevel(sec, "STACKTRACE_LEVEL", "None")
-	Log.RootPath = sec.Key("ROOT_PATH").MustString(path.Join(AppWorkPath, "log"))
-	forcePathSeparator(Log.RootPath)
-	Log.BufferLength = sec.Key("BUFFER_LEN").MustInt64(10000)
+	deprecatedSetting(rootCfg, "log", "ACCESS", "log", "logger.access.MODE", "1.21")
+	deprecatedSetting(rootCfg, "log", "ENABLE_ACCESS_LOG", "log", "logger.access.MODE", "1.21")
+	if val := sec.Key("ACCESS").String(); val != "" {
+		sec.Key("logger.access.MODE").MustString(val)
+	}
+	if sec.HasKey("ENABLE_ACCESS_LOG") && !sec.Key("ENABLE_ACCESS_LOG").MustBool() {
+		sec.Key("logger.access.MODE").SetValue("")
+	}
 
-	Log.EnableSSHLog = sec.Key("ENABLE_SSH_LOG").MustBool(false)
-	Log.EnableAccessLog = sec.Key("ENABLE_ACCESS_LOG").MustBool(false)
-	Log.AccessLogTemplate = sec.Key("ACCESS_LOG_TEMPLATE").MustString(
-		`{{.Ctx.RemoteHost}} - {{.Identity}} {{.Start.Format "[02/Jan/2006:15:04:05 -0700]" }} "{{.Ctx.Req.Method}} {{.Ctx.Req.URL.RequestURI}} {{.Ctx.Req.Proto}}" {{.ResponseWriter.Status}} {{.ResponseWriter.Size}} "{{.Ctx.Req.Referer}}" "{{.Ctx.Req.UserAgent}}"`,
-	)
-	Log.RequestIDHeaders = sec.Key("REQUEST_ID_HEADERS").Strings(",")
-	// the `MustString` updates the default value, and `log.ACCESS` is used by `generateNamedLogger("access")` later
-	_ = rootCfg.Section("log").Key("ACCESS").MustString("file")
+	deprecatedSetting(rootCfg, "log", "ROUTER", "log", "logger.router.MODE", "1.21")
+	deprecatedSetting(rootCfg, "log", "DISABLE_ROUTER_LOG", "log", "logger.router.MODE", "1.21")
+	if val := sec.Key("ROUTER").String(); val != "" {
+		sec.Key("logger.router.MODE").MustString(val)
+	}
+	if !sec.HasKey("logger.router.MODE") {
+		sec.Key("logger.router.MODE").MustString(",") // use default logger
+	}
+	if sec.HasKey("DISABLE_ROUTER_LOG") && sec.Key("DISABLE_ROUTER_LOG").MustBool() {
+		sec.Key("logger.router.MODE").SetValue("")
+	}
 
-	sec.Key("ROUTER").MustString("console")
-	// Allow [log]  DISABLE_ROUTER_LOG to override [server] DISABLE_ROUTER_LOG
-	Log.DisableRouterLog = sec.Key("DISABLE_ROUTER_LOG").MustBool(Log.DisableRouterLog)
+	deprecatedSetting(rootCfg, "log", "XORM", "log", "logger.xorm.MODE", "1.21")
+	deprecatedSetting(rootCfg, "log", "ENABLE_XORM_LOG", "log", "logger.xorm.MODE", "1.21")
+	if val := sec.Key("XORM").String(); val != "" {
+		sec.Key("logger.xorm.MODE").MustString(val)
+	}
+	if !sec.HasKey("logger.xorm.MODE") {
+		sec.Key("logger.xorm.MODE").MustString(",") // use default logger
+	}
+	if sec.HasKey("ENABLE_XORM_LOG") && !sec.Key("ENABLE_XORM_LOG").MustBool() {
+		sec.Key("logger.xorm.MODE").SetValue("")
+	}
+}
 
-	Log.EnableXORMLog = rootCfg.Section("log").Key("ENABLE_XORM_LOG").MustBool(true)
+func LogPrepareFilenameForWriter(fileName, defaultFileName string) string {
+	if fileName == "" {
+		fileName = defaultFileName
+	}
+	if !filepath.IsAbs(fileName) {
+		fileName = filepath.Join(Log.RootPath, fileName)
+	} else {
+		fileName = filepath.Clean(fileName)
+	}
+	if err := os.MkdirAll(filepath.Dir(fileName), os.ModePerm); err != nil {
+		panic(fmt.Sprintf("unable to create directory for log %q: %v", fileName, err.Error()))
+	}
+	return fileName
 }
 
-func generateLogConfig(sec ConfigSection, name string, defaults defaultLogOptions) (mode, jsonConfig, levelName string) {
-	level := getLogLevel(sec, "LEVEL", Log.Level)
-	levelName = level.String()
-	stacktraceLevelName := getStacktraceLogLevel(sec, "STACKTRACE_LEVEL", Log.StacktraceLogLevel)
-	stacktraceLevel := log.FromString(stacktraceLevelName)
-	mode = name
-	keys := sec.Keys()
-	logPath := defaults.filename
-	flags := log.FlagsFromString(defaults.flags)
-	expression := ""
-	prefix := ""
-	for _, key := range keys {
-		switch key.Name() {
-		case "MODE":
-			mode = key.MustString(name)
-		case "FILE_NAME":
-			logPath = key.MustString(defaults.filename)
-			forcePathSeparator(logPath)
-			if !filepath.IsAbs(logPath) {
-				logPath = path.Join(Log.RootPath, logPath)
-			}
-		case "FLAGS":
-			flags = log.FlagsFromString(key.MustString(defaults.flags))
-		case "EXPRESSION":
-			expression = key.MustString("")
-		case "PREFIX":
-			prefix = key.MustString("")
-		}
+func loadLogModeByName(rootCfg ConfigProvider, loggerName, modeName string) (writerName, writerType string, writerMode log.WriterMode, err error) {
+	sec := rootCfg.Section("log." + modeName)
+
+	writerMode = log.WriterMode{}
+	writerType = ConfigSectionKeyString(sec, "MODE")
+	if writerType == "" {
+		writerType = modeName
 	}
 
-	logConfig := map[string]interface{}{
-		"level":           level.String(),
-		"expression":      expression,
-		"prefix":          prefix,
-		"flags":           flags,
-		"stacktraceLevel": stacktraceLevel.String(),
+	writerName = modeName
+	defaultFlags := "stdflags"
+	defaultFilaName := "gitea.log"
+	if loggerName == "access" {
+		// "access" logger is special, by default it doesn't have output flags, so it also needs a new writer name to avoid conflicting with other writers.
+		// so "access" logger's writer name is usually "file.access" or "console.access"
+		writerName += ".access"
+		defaultFlags = "none"
+		defaultFilaName = "access.log"
 	}
 
-	// Generate log configuration.
-	switch mode {
+	writerMode.Level = log.LevelFromString(ConfigInheritedKeyString(sec, "LEVEL", Log.Level.String()))
+	writerMode.StacktraceLevel = log.LevelFromString(ConfigInheritedKeyString(sec, "STACKTRACE_LEVEL", Log.StacktraceLogLevel.String()))
+	writerMode.Prefix = ConfigInheritedKeyString(sec, "PREFIX")
+	writerMode.Expression = ConfigInheritedKeyString(sec, "EXPRESSION")
+	writerMode.Flags = log.FlagsFromString(ConfigInheritedKeyString(sec, "FLAGS", defaultFlags))
+
+	switch writerType {
 	case "console":
-		useStderr := sec.Key("STDERR").MustBool(false)
-		logConfig["stderr"] = useStderr
+		useStderr := ConfigInheritedKey(sec, "STDERR").MustBool(false)
+		defaultCanColor := log.CanColorStdout
 		if useStderr {
-			logConfig["colorize"] = sec.Key("COLORIZE").MustBool(log.CanColorStderr)
-		} else {
-			logConfig["colorize"] = sec.Key("COLORIZE").MustBool(log.CanColorStdout)
+			defaultCanColor = log.CanColorStderr
 		}
-
+		writerOption := log.WriterConsoleOption{Stderr: useStderr}
+		writerMode.Colorize = ConfigInheritedKey(sec, "COLORIZE").MustBool(defaultCanColor)
+		writerMode.WriterOption = writerOption
 	case "file":
-		if err := os.MkdirAll(path.Dir(logPath), os.ModePerm); err != nil {
-			panic(err.Error())
-		}
-
-		logConfig["filename"] = logPath + filenameSuffix
-		logConfig["rotate"] = sec.Key("LOG_ROTATE").MustBool(true)
-		logConfig["maxsize"] = 1 << uint(sec.Key("MAX_SIZE_SHIFT").MustInt(28))
-		logConfig["daily"] = sec.Key("DAILY_ROTATE").MustBool(true)
-		logConfig["maxdays"] = sec.Key("MAX_DAYS").MustInt(7)
-		logConfig["compress"] = sec.Key("COMPRESS").MustBool(true)
-		logConfig["compressionLevel"] = sec.Key("COMPRESSION_LEVEL").MustInt(-1)
+		fileName := LogPrepareFilenameForWriter(ConfigInheritedKey(sec, "FILE_NAME").String(), defaultFilaName)
+		writerOption := log.WriterFileOption{}
+		writerOption.FileName = fileName + filenameSuffix // FIXME: the suffix doesn't seem right, see its related comments
+		writerOption.LogRotate = ConfigInheritedKey(sec, "LOG_ROTATE").MustBool(true)
+		writerOption.MaxSize = 1 << uint(ConfigInheritedKey(sec, "MAX_SIZE_SHIFT").MustInt(28))
+		writerOption.DailyRotate = ConfigInheritedKey(sec, "DAILY_ROTATE").MustBool(true)
+		writerOption.MaxDays = ConfigInheritedKey(sec, "MAX_DAYS").MustInt(7)
+		writerOption.Compress = ConfigInheritedKey(sec, "COMPRESS").MustBool(true)
+		writerOption.CompressionLevel = ConfigInheritedKey(sec, "COMPRESSION_LEVEL").MustInt(-1)
+		writerMode.WriterOption = writerOption
 	case "conn":
-		logConfig["reconnectOnMsg"] = sec.Key("RECONNECT_ON_MSG").MustBool()
-		logConfig["reconnect"] = sec.Key("RECONNECT").MustBool()
-		logConfig["net"] = sec.Key("PROTOCOL").In("tcp", []string{"tcp", "unix", "udp"})
-		logConfig["addr"] = sec.Key("ADDR").MustString(":7020")
-	case "smtp":
-		logConfig["username"] = sec.Key("USER").MustString("example@example.com")
-		logConfig["password"] = sec.Key("PASSWD").MustString("******")
-		logConfig["host"] = sec.Key("HOST").MustString("127.0.0.1:25")
-		sendTos := strings.Split(sec.Key("RECEIVERS").MustString(""), ",")
-		for i, address := range sendTos {
-			sendTos[i] = strings.TrimSpace(address)
+		writerOption := log.WriterConnOption{}
+		writerOption.ReconnectOnMsg = ConfigInheritedKey(sec, "RECONNECT_ON_MSG").MustBool()
+		writerOption.Reconnect = ConfigInheritedKey(sec, "RECONNECT").MustBool()
+		writerOption.Protocol = ConfigInheritedKey(sec, "PROTOCOL").In("tcp", []string{"tcp", "unix", "udp"})
+		writerOption.Addr = ConfigInheritedKey(sec, "ADDR").MustString(":7020")
+		writerMode.WriterOption = writerOption
+	default:
+		if !log.HasEventWriter(writerType) {
+			return "", "", writerMode, fmt.Errorf("invalid log writer type (mode): %s", writerType)
 		}
-		logConfig["sendTos"] = sendTos
-		logConfig["subject"] = sec.Key("SUBJECT").MustString("Diagnostic message from Gitea")
 	}
 
-	logConfig["colorize"] = sec.Key("COLORIZE").MustBool(false)
-	byteConfig, err := json.Marshal(logConfig)
-	if err != nil {
-		log.Error("Failed to marshal log configuration: %v %v", logConfig, err)
-		return
-	}
-	jsonConfig = string(byteConfig)
-	return mode, jsonConfig, levelName
+	return writerName, writerType, writerMode, nil
 }
 
-func generateNamedLogger(rootCfg ConfigProvider, key string, options defaultLogOptions) *LogDescription {
-	description := LogDescription{
-		Name: key,
-	}
-
-	sections := strings.Split(rootCfg.Section("log").Key(strings.ToUpper(key)).MustString(""), ",")
-
-	for i := 0; i < len(sections); i++ {
-		sections[i] = strings.TrimSpace(sections[i])
-	}
+var filenameSuffix = ""
 
-	for _, name := range sections {
-		if len(name) == 0 || (name == "console" && options.disableConsole) {
-			continue
-		}
-		sec, err := rootCfg.GetSection("log." + name + "." + key)
-		if err != nil {
-			sec, _ = rootCfg.NewSection("log." + name + "." + key)
-		}
+// RestartLogsWithPIDSuffix restarts the logs with a PID suffix on files
+// FIXME: it seems not right, it breaks log rotating or log collectors
+func RestartLogsWithPIDSuffix() {
+	filenameSuffix = fmt.Sprintf(".%d", os.Getpid())
+	initAllLoggers() // when forking, before restarting, rename logger file and re-init all loggers
+}
 
-		provider, config, levelName := generateLogConfig(sec, name, options)
+func InitLoggersForTest() {
+	initAllLoggers()
+}
 
-		if err := log.NewNamedLogger(key, options.bufferLength, name, provider, config); err != nil {
-			// Maybe panic here?
-			log.Error("Could not create new named logger: %v", err.Error())
-		}
+// initAllLoggers creates all the log services
+func initAllLoggers() {
+	initManagedLoggers(log.GetManager(), CfgProvider)
 
-		description.SubLogDescriptions = append(description.SubLogDescriptions, SubLogDescription{
-			Name:     name,
-			Provider: provider,
-			Config:   config,
-		})
-		log.Info("%s Log: %s(%s:%s)", util.ToTitleCase(key), util.ToTitleCase(name), provider, levelName)
-	}
+	golog.SetFlags(0)
+	golog.SetPrefix("")
+	golog.SetOutput(log.LoggerToWriter(log.GetLogger(log.DEFAULT).Info))
+}
 
-	AddLogDescription(key, &description)
+func initManagedLoggers(manager *log.LoggerManager, cfg ConfigProvider) {
+	loadLogGlobalFrom(cfg)
+	prepareLoggerConfig(cfg)
 
-	return &description
+	initLoggerByName(manager, cfg, log.DEFAULT) // default
+	initLoggerByName(manager, cfg, "access")
+	initLoggerByName(manager, cfg, "router")
+	initLoggerByName(manager, cfg, "xorm")
 }
 
-// initLogFrom initializes logging with settings from configuration provider
-func initLogFrom(rootCfg ConfigProvider) {
+func initLoggerByName(manager *log.LoggerManager, rootCfg ConfigProvider, loggerName string) {
 	sec := rootCfg.Section("log")
-	options := newDefaultLogOptions()
-	options.bufferLength = Log.BufferLength
+	keyPrefix := "logger." + loggerName
 
-	description := LogDescription{
-		Name: log.DEFAULT,
+	disabled := sec.HasKey(keyPrefix+".MODE") && sec.Key(keyPrefix+".MODE").String() == ""
+	if disabled {
+		return
 	}
 
-	sections := strings.Split(sec.Key("MODE").MustString("console"), ",")
+	modeVal := sec.Key(keyPrefix + ".MODE").String()
+	if modeVal == "," {
+		modeVal = Log.Mode
+	}
 
-	useConsole := false
-	for _, name := range sections {
-		name = strings.TrimSpace(name)
-		if name == "" {
+	var eventWriters []log.EventWriter
+	modes := strings.Split(modeVal, ",")
+	for _, modeName := range modes {
+		modeName = strings.TrimSpace(modeName)
+		if modeName == "" {
 			continue
 		}
-		if name == "console" {
-			useConsole = true
-		}
-
-		sec, err := rootCfg.GetSection("log." + name + ".default")
+		writerName, writerType, writerMode, err := loadLogModeByName(rootCfg, loggerName, modeName)
 		if err != nil {
-			sec, err = rootCfg.GetSection("log." + name)
+			log.FallbackErrorf("Failed to load writer mode %q for logger %s: %v", modeName, loggerName, err)
+			continue
+		}
+		if writerMode.BufferLen == 0 {
+			writerMode.BufferLen = Log.BufferLen
+		}
+		eventWriter := manager.GetSharedWriter(writerName)
+		if eventWriter == nil {
+			eventWriter, err = manager.NewSharedWriter(writerName, writerType, writerMode)
 			if err != nil {
-				sec, _ = rootCfg.NewSection("log." + name)
+				log.FallbackErrorf("Failed to create event writer for logger %s: %v", loggerName, err)
+				continue
 			}
 		}
-
-		provider, config, levelName := generateLogConfig(sec, name, options)
-		log.NewLogger(options.bufferLength, name, provider, config)
-		description.SubLogDescriptions = append(description.SubLogDescriptions, SubLogDescription{
-			Name:     name,
-			Provider: provider,
-			Config:   config,
-		})
-		log.Info("Gitea Log Mode: %s(%s:%s)", util.ToTitleCase(name), util.ToTitleCase(provider), levelName)
-	}
-
-	AddLogDescription(log.DEFAULT, &description)
-
-	if !useConsole {
-		log.Info("According to the configuration, subsequent logs will not be printed to the console")
-		if err := log.DelLogger("console"); err != nil {
-			log.Fatal("Cannot delete console logger: %v", err)
-		}
+		eventWriters = append(eventWriters, eventWriter)
 	}
 
-	// Finally redirect the default golog to here
-	golog.SetFlags(0)
-	golog.SetPrefix("")
-	golog.SetOutput(log.NewLoggerAsWriter("INFO", log.GetLogger(log.DEFAULT)))
+	manager.GetLogger(loggerName).RemoveAllWriters().AddWriters(eventWriters...)
 }
 
-// RestartLogsWithPIDSuffix restarts the logs with a PID suffix on files
-func RestartLogsWithPIDSuffix() {
-	filenameSuffix = fmt.Sprintf(".%d", os.Getpid())
-	InitLogs(false)
+func InitSQLLoggersForCli(level log.Level) {
+	log.SetConsoleLogger("xorm", "console", level)
 }
 
-// InitLogs creates all the log services
-func InitLogs(disableConsole bool) {
-	initLogFrom(CfgProvider)
-
-	if !Log.DisableRouterLog {
-		options := newDefaultLogOptions()
-		options.filename = filepath.Join(Log.RootPath, "router.log")
-		options.flags = "date,time" // For the router we don't want any prefixed flags
-		options.bufferLength = Log.BufferLength
-		generateNamedLogger(CfgProvider, "router", options)
-	}
-
-	if Log.EnableAccessLog {
-		options := newDefaultLogOptions()
-		options.filename = filepath.Join(Log.RootPath, "access.log")
-		options.flags = "" // For the router we don't want any prefixed flags
-		options.bufferLength = Log.BufferLength
-		generateNamedLogger(CfgProvider, "access", options)
-	}
-
-	initSQLLogFrom(CfgProvider, disableConsole)
-}
-
-// InitSQLLog initializes xorm logger setting
-func InitSQLLog(disableConsole bool) {
-	initSQLLogFrom(CfgProvider, disableConsole)
+func IsAccessLogEnabled() bool {
+	return log.IsLoggerEnabled("access")
 }
 
-func initSQLLogFrom(rootCfg ConfigProvider, disableConsole bool) {
-	if Log.EnableXORMLog {
-		options := newDefaultLogOptions()
-		options.filename = filepath.Join(Log.RootPath, "xorm.log")
-		options.bufferLength = Log.BufferLength
-		options.disableConsole = disableConsole
-
-		rootCfg.Section("log").Key("XORM").MustString(",")
-		generateNamedLogger(rootCfg, "xorm", options)
-	}
+func IsRouteLogEnabled() bool {
+	return log.IsLoggerEnabled("router")
 }