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minio/pkg/policy/id.go

57 lines
1.3 KiB

/*
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package policy
import (
"encoding/json"
"fmt"
"unicode/utf8"
)
// ID - policy ID.
type ID string
// IsValid - checks if ID is valid or not.
func (id ID) IsValid() bool {
return utf8.ValidString(string(id))
}
// MarshalJSON - encodes ID to JSON data.
func (id ID) MarshalJSON() ([]byte, error) {
if !id.IsValid() {
return nil, fmt.Errorf("invalid ID %v", id)
}
return json.Marshal(string(id))
}
// UnmarshalJSON - decodes JSON data to ID.
func (id *ID) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
i := ID(s)
if !i.IsValid() {
return fmt.Errorf("invalid ID %v", s)
}
*id = i
return nil
}