The slog API doesn't allow wrapping handlers this way. slog.Handlers hold state for the current open group. You'll need a full implementation of a handler to do this.
(Technically it's possible if you record the group/attrs in With/WithGroup yourself and only call the wrapped handler in Handle, but you lose any preformatting performance benefits a handler may have implemented.) - sean On Mon, Oct 23, 2023 at 2:50 PM Johann Höchtl <johann.hoec...@gmail.com> wrote: > As I got zero reply to that answer, let me rephrase it probably more > easily: > > I would like to use slog, no other logging library > I would like to have an entry called eventID which is at the root level > and has a unique uuid for every log entry > I would like to use a group for every application specific key-val pairs > > What I trired so far: > > - Use a Handler to add eventID : The key gets added to the logger yet > at the group nesting level, not at the root level > - Use a ReplaceAttr-Function: I add the key on initiailisation yet > leave the value unassigned to Replace it in the ReplaceAttr-Function: The > ReplaceAttr-Function sees the root level addded eventID only untill a call > to .WithGroup, then the eventId is no longer available within the > ReplaceAttr-Function > > > Any help? > Johann Höchtl schrieb am Donnerstag, 5. Oktober 2023 um 17:59:30 UTC+2: > >> I created a custom slog Handler which adds an attribute eventId which is >> a GUID >> >> A NewLogger function returns that logger wrapped into a group: Every >> further key-value provided should go into that group. >> >> Unfortunately the eventId also gets promoted into that group although it >> should be at the parent level. >> >> See here the Goplay https://play.golang.com/p/a10f09jMwL3 >> >> Thank you for your help, Johann >> > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/16dc9f51-6c8c-4fd9-9942-5e365399e26dn%40googlegroups.com > <https://groups.google.com/d/msgid/golang-nuts/16dc9f51-6c8c-4fd9-9942-5e365399e26dn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAGabyPokE8SKBtqKiUNs9_aieX2mWdxKm4XrwOoYOoe6jV%3DMUA%40mail.gmail.com.
