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account_key_serializer.go
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account_key_serializer.go
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// Copyright 2019 The klaytn Authors
// This file is part of the klaytn library.
//
// The klaytn library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The klaytn library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the klaytn library. If not, see <http://www.gnu.org/licenses/>.
package accountkey
import (
"encoding/json"
"io"
"github.com/klaytn/klaytn/rlp"
"github.com/pkg/errors"
)
var errNoKeyType = errors.New("key type is not specified on the input")
type AccountKeySerializer struct {
keyType AccountKeyType
key AccountKey
}
type AccountKeyJSON struct {
KeyType *AccountKeyType `json:"keyType"`
Key json.RawMessage `json:"key"`
}
func NewAccountKeySerializerWithAccountKey(k AccountKey) *AccountKeySerializer {
return &AccountKeySerializer{k.Type(), k}
}
func NewAccountKeySerializer() *AccountKeySerializer {
return &AccountKeySerializer{}
}
func (serializer *AccountKeySerializer) GetKey() AccountKey {
return serializer.key
}
func (serializer *AccountKeySerializer) EncodeRLP(w io.Writer) error {
if err := rlp.Encode(w, serializer.keyType); err != nil {
return err
}
return rlp.Encode(w, serializer.key)
}
func (serializer *AccountKeySerializer) DecodeRLP(s *rlp.Stream) error {
if err := s.Decode(&serializer.keyType); err != nil {
return err
}
var err error
serializer.key, err = NewAccountKey(serializer.keyType)
if err != nil {
return err
}
return s.Decode(serializer.key)
}
func (serializer *AccountKeySerializer) MarshalJSON() ([]byte, error) {
b, err := json.Marshal(serializer.key)
if err != nil {
return nil, err
}
return json.Marshal(&AccountKeyJSON{&serializer.keyType, b})
}
func (serializer *AccountKeySerializer) UnmarshalJSON(b []byte) error {
var keyJSON AccountKeyJSON
if err := json.Unmarshal(b, &keyJSON); err != nil {
return err
}
if keyJSON.KeyType == nil {
return errNoKeyType
}
serializer.keyType = *keyJSON.KeyType
var err error
serializer.key, err = NewAccountKey(serializer.keyType)
if err != nil {
return err
}
return json.Unmarshal(keyJSON.Key, serializer.key)
}