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import ( "context" "log/slog" "os")
// NewHandler sets up a new slog.Handler with the service name// as an attributefunc NewHandler(name string) slog.Handler { handler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{ Level: slog.LevelDebug, })
var attrs []slog.Attr attrs = append(attrs, slog.Attr{Key: "service", Value: slog.StringValue(name)}) handler.WithAttrs(attrs) return handler}
func New(name string) *slog.Logger { return slog.New(NewHandler(name))}
func NewContext(ctx context.Context, name string) context.Context { return IntoContext(ctx, New(name))}
type ctxKey struct{}
// IntoContext adds a logger to a context. Use FromContext to// pull the logger out.func IntoContext(ctx context.Context, l *slog.Logger) context.Context { return context.WithValue(ctx, ctxKey{}, l)}
// FromContext returns a logger from a context.Context;// if the passed context is nil, we return the default slog// logger.func FromContext(ctx context.Context) *slog.Logger { if ctx != nil { v := ctx.Value(ctxKey{}) if v == nil { return slog.Default() } return v.(*slog.Logger) }
return slog.Default()}