Include trace in every log

[Mistic92]

Hi, is there a way to include traceId for every log? I'm using gin with otel and trying to figure out how to approach this issue

[amammay]

@Mistic92 just was browsing through and i ended up doing something like this

func (i *AppLogger) WrapTraceContext(ctx context.Context) *zap.SugaredLogger {
	sc := trace.SpanContextFromContext(ctx)
	fields := zapdriver.TraceContext(sc.TraceID().String(), sc.SpanID().String(), sc.IsSampled(), i.projectID)
	setFields := i.zap.With(fields...)
	return setFields.Sugar()
}

and then used it like so

func (s *server) handleGetDog(dogService *gotoproduction.DogService) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		ctx := r.Context()
		logger := s.appLogger.WrapTraceContext(ctx)
		vars := mux.Vars(r)
		dogID, ok := vars["dogID"]
		logger.Infof("searching for dog %s", dogID)
		if !ok {
			s.respond(w, nil, http.StatusBadRequest)
			return
		}
		dog, err := dogService.GetDogByID(ctx, dogID)
		if err == gotoproduction.ErrDogNotFound {
			s.respond(w, nil, http.StatusNotFound)
			return
		}
		if err != nil {
			s.respond(w, nil, http.StatusInternalServerError)
			return
		}
		logger.Infof("search found dog: %s", dog.ID)
		s.respond(w, dog, http.StatusOK)
	}
}

my full reference is in this repo. https://github.com/amammay/gotoproduction