Replace BadgerDB with bbolt

pkg/db/bolt/logger.go

@@ -0,0 +1,23 @@
+package bolt
+
+import (
+	bolt "go.etcd.io/bbolt"
+	"go.uber.org/zap"
+)
+
+// Interface guard.
+var _ bolt.Logger = (*Logger)(nil)
+
+type Logger struct {
+	*zap.SugaredLogger
+}
+
+// Warning implements bbolt.Logger.
+func (l *Logger) Warning(v ...interface{}) {
+	l.Warn(v...)
+}
+
+// Warningf implements bbolt.Logger.
+func (l *Logger) Warningf(format string, v ...interface{}) {
+	l.Warnf(format, v...)
+}