44 lines
784 B
Go
44 lines
784 B
Go
package kv
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
|
|
"github.com/dgraph-io/badger/v4"
|
|
)
|
|
|
|
func deleteKey(db *badger.DB, key string) error {
|
|
return db.Update(func(txn *badger.Txn) error {
|
|
return txn.Delete([]byte(key))
|
|
})
|
|
}
|
|
|
|
func DeleteInDB(db *badger.DB, key string) error {
|
|
|
|
prefix := []byte(key + "/")
|
|
|
|
err := db.View(func(txn *badger.Txn) error {
|
|
opts := badger.DefaultIteratorOptions
|
|
opts.PrefetchValues = false
|
|
|
|
it := txn.NewIterator(opts)
|
|
defer it.Close()
|
|
|
|
for it.Seek(prefix); it.ValidForPrefix(prefix); it.Next() {
|
|
item := it.Item()
|
|
key := item.Key()
|
|
|
|
k := append([]byte{}, key...)
|
|
fmt.Println(string(k))
|
|
if err := deleteKey(db, string(k)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
return deleteKey(db, key)
|
|
}
|