Setting channel name cross multiple loggers

[nhi-vanye]

What is the best approach to tracking which "application subsystem" a message is coming from?

Normally I would create one logger per subsystem and configure its "name" or "channel".

But it seems that channel is only referenced in the record and its using the global DefaultCannelName

in probe.go I have

var probeLogger = slog.NewWithName("probe")

func init() {

    slog.DefaultChannelName = "probe"
    slog.DefaultTimeFormat = "2006-01-02 15:04:05.000"

    h1 := handler.NewConsoleHandler(slog.AllLevels)
    f := slog.AsTextFormatter(h1.Formatter())
    f.SetTemplate(utils.LogTemplate)
    probeLogger.AddHandlers(h1)

    probeLogger.Infof("Probing %s", viper.GetString("read"))
...

where as in root.go I have

var rootLogger = slog.NewWithName("root")

func init() {

    slog.DefaultChannelName = "root"
    slog.DefaultTimeFormat = "2006-01-02 15:04:05.000"

    h1 := handler.NewConsoleHandler(slog.AllLevels)
    f := slog.AsTextFormatter(h1.Formatter())
    f.SetTemplate(utils.LogTemplate)
    rootLogger.AddHandlers(h1)

All of probe.go's messages are using root

I have worked around it by using a subsystem specific template that hardcodes the name, but that seems unclean...

[inhere]

👍 Thanks for your feedback, I will add logger.ChannelName option setting in next version.

var rootLogger = slog.NewWithName("root", func(l *slog.Logger) {
   // l.ChannelName = "root"
   // or 
   l.ChannelName = l.Name()
})

if not sets, will use slog. DefaultChannelName.

---

The time format can be sets by:

f := slog.AsTextFormatter(h1. Formatter())
f.TimeFormat = "2006-01-02 15:04:05.000"

[nhi-vanye]

Super-big thumbs up...

[inhere]

hi @nhi-vanye released on the v0.5.3