// SetupLogging will initialize the logger backend and set the flags.
func SetupLogging() {
fmt := LogFormats[os.Getenv(envLoggingFmt)]
if fmt == "" {
fmt = LogFormats[defaultLogFormat]
}
backend := logging.NewLogBackend(os.Stderr, "", 0)
logging.SetBackend(backend)
logging.SetFormatter(logging.MustStringFormatter(fmt))
lvl := logging.ERROR
if logenv := os.Getenv(envLogging); logenv != "" {
var err error
lvl, err = logging.LogLevel(logenv)
if err != nil {
log.Errorf("logging.LogLevel() Error: %q", err)
lvl = logging.ERROR // reset to ERROR, could be undefined now(?)
}
}
Debug = GetenvBool("IPFS_DEBUG")
if Debug {
lvl = logging.DEBUG
}
SetAllLoggers(lvl)
}
// SetLogLevel changes the log level of a specific subsystem
// name=="*" changes all subsystems
func SetLogLevel(name, level string) error {
lvl, err := logging.LogLevel(level)
if err != nil {
return err
}
// wildcard, change all
if name == "*" {
SetAllLoggers(lvl)
return nil
}
// Check if we have a logger by that name
// logging.SetLevel() can't tell us...
_, ok := loggers[name]
if !ok {
return ErrNoSuchLogger
}
logging.SetLevel(lvl, name)
return nil
}