gql dir ls

pkg/rlog/rlog.go

@@ -0,0 +1,70 @@
+package rlog
+
+import (
+	"log/slog"
+	"os"
+
+	"github.com/rs/zerolog"
+	slogmulti "github.com/samber/slog-multi"
+	slogzerolog "github.com/samber/slog-zerolog"
+)
+
+const errKey = "error"
+const labelGroupKey = "labelGroup"
+
+var zl = zerolog.New(&zerolog.ConsoleWriter{Out: os.Stderr})
+
+var handlers = []slog.Handler{
+	slogzerolog.Option{Logger: &zl}.NewZerologHandler(),
+}
+
+var defaultLogger = slog.New(slogmulti.Fanout(handlers...))
+
+func init() {
+	slog.SetDefault(defaultLogger)
+}
+
+func AddHandler(nh slog.Handler) {
+	handlers = append(handlers, nh)
+	defaultLogger = slog.New(slogmulti.Fanout(handlers...))
+	slog.SetDefault(defaultLogger)
+}
+
+func ComponentLog(name string) *slog.Logger {
+	return defaultLogger.With(slog.String("component", name))
+}
+
+func ServiceLog(name string) *slog.Logger {
+	return ComponentLog("service/" + name)
+}
+
+func FunctionLog(log *slog.Logger, name string) *slog.Logger {
+	return log.With(slog.String("function", name))
+}
+
+func EndpointLog(log *slog.Logger, name string) *slog.Logger {
+	return log.With(slog.String("endpoint", name))
+}
+
+func Err(err error) slog.Attr {
+	return slog.Attr{Key: errKey, Value: fmtErr(err)}
+}
+
+func Label(args ...any) slog.Attr {
+	return slog.Group(labelGroupKey, args...)
+}
+
+// fmtErr returns a slog.GroupValue with keys "msg" and "trace". If the error
+// does not implement interface { StackTrace() errors.StackTrace }, the "trace"
+// key is omitted.
+func fmtErr(err error) slog.Value {
+	if err == nil {
+		return slog.AnyValue(nil)
+	}
+
+	var groupValues []slog.Attr
+
+	groupValues = append(groupValues, slog.String("msg", err.Error()))
+
+	return slog.GroupValue(groupValues...)
+}