func string2Level(logLevelStr string) (timber.Level, error) {
logLevelStr = strings.ToUpper(logLevelStr)
for logLevel, levelStr := range timber.LongLevelStrings {
if logLevelStr == levelStr {
return timber.Level(logLevel), nil
}
}
return 0, errors.New("Not found")
}
func (a *App) makeConfigLogger() (timber.ConfigLogger, bool) {
defaultLogPattern := "[%D %T] [%L] %M"
filenamesByDefault, _ := a.Cfg.GetBool("gop", "log_filename", false)
if filenamesByDefault {
defaultLogPattern = "[%D %T] [%L] %s %M"
}
logPattern, _ := a.Cfg.Get("gop", "log_pattern", defaultLogPattern)
// If set, hack all logging to stdout for dev
forceStdout, _ := a.Cfg.GetBool("gop", "stdout_only_logging", false)
configLogger := timber.ConfigLogger{
LogWriter: new(timber.ConsoleWriter),
Level: timber.INFO,
Formatter: timber.NewPatFormatter(logPattern),
}
defaultLogDir, _ := a.Cfg.Get("gop", "log_dir", "/var/log")
fellbackToCWD := false
a.logDir = defaultLogDir + "/" + a.ProjectName
if !forceStdout {
defaultLogFname := a.logDir + "/" + a.AppName + ".log"
logFname, _ := a.Cfg.Get("gop", "log_file", defaultLogFname)
_, dirExistsErr := os.Stat(a.logDir)
if dirExistsErr != nil && os.IsNotExist(dirExistsErr) {
// Carry on with stdout logging, but remember to mention it
fellbackToCWD = true
a.logDir = "."
} else {
newWriter, err := timber.NewFileWriter(logFname)
if err != nil {
panic(fmt.Sprintf("Can't open log file: %s", err))
}
configLogger.LogWriter = newWriter
}
}
logLevelStr, _ := a.Cfg.Get("gop", "log_level", "INFO")
logLevel, err := string2Level(logLevelStr)
if err == nil {
configLogger.Level = timber.Level(logLevel)
}
granularsPrefix, _ := a.Cfg.Get("gop", "log_granulars_prefix", "")
granularsStrs, _ := a.Cfg.GetList("gop", "log_granulars", nil)
if granularsStrs != nil {
configLogger.Granulars = make(map[string]timber.Level)
GRANULARS:
for _, granStr := range granularsStrs {
bits := strings.Split(granStr, ":")
if len(bits) != 2 {
continue GRANULARS
}
pkgPart := bits[0]
pkgLevel := bits[1]
if pkgPart == "" || pkgLevel == "" {
continue GRANULARS
}
pkgName := pkgPart
if granularsPrefix != "" {
pkgName = granularsPrefix + "/" + pkgPart
}
logLevel, err := string2Level(pkgLevel)
if err == nil {
configLogger.Granulars[pkgName] = logLevel
}
}
}
return configLogger, fellbackToCWD
}