Resolve a suspicious race condition when doing Unmarshal on the Query…

… struct

query.go

@@ -2,24 +2,32 @@ package caches
 
 import (
  "encoding/json"
+ "sync"
 
  "gorm.io/gorm"
 )
 
 type Query[T any] struct {
  Dest T
  RowsAffected int64
+ mu sync.RWMutex
 }
 
 func (q *Query[T]) Marshal() ([]byte, error) {
+ q.mu.RUnlock()
+ defer q.mu.RUnlock()
  return json.Marshal(q)
 }
 
 func (q *Query[T]) Unmarshal(bytes []byte) error {
+ q.mu.Lock()
+ defer q.mu.Unlock()
  return json.Unmarshal(bytes, q)
 }
 
 func (q *Query[T]) replaceOn(db *gorm.DB) {
+ q.mu.Lock()
+ defer q.mu.Unlock()
  SetPointedValue(db.Statement.Dest, q.Dest)
  SetPointedValue(&db.Statement.RowsAffected, &q.RowsAffected)
 }