Add logger

pkg/db/badger/logger.go

@@ -0,0 +1,21 @@
+package badger
+
+import (
+	"github.com/dgraph-io/badger/v3"
+	"go.uber.org/zap"
+)
+
+// Interface guard.
+var _ badger.Logger = (*Logger)(nil)
+
+type Logger struct {
+	*zap.SugaredLogger
+}
+
+func NewLogger(l *zap.SugaredLogger) *Logger {
+	return &Logger{l}
+}
+
+func (l *Logger) Warningf(template string, args ...interface{}) {
+	l.Warnf(template, args)
+}