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minio/pkg/policy/condition/name.go

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1.8 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 condition
import (
"encoding/json"
"fmt"
)
type name string
const (
stringEquals name = "StringEquals"
stringNotEquals = "StringNotEquals"
stringLike = "StringLike"
stringNotLike = "StringNotLike"
ipAddress = "IpAddress"
notIPAddress = "NotIpAddress"
null = "Null"
)
// IsValid - checks if name is valid or not.
func (n name) IsValid() bool {
switch n {
case stringEquals, stringNotEquals, stringLike, stringNotLike, ipAddress, notIPAddress, null:
return true
}
return false
}
// MarshalJSON - encodes name to JSON data.
func (n name) MarshalJSON() ([]byte, error) {
if !n.IsValid() {
return nil, fmt.Errorf("invalid name %v", n)
}
return json.Marshal(string(n))
}
// UnmarshalJSON - decodes JSON data to condition name.
func (n *name) UnmarshalJSON(data []byte) error {
var s string
if err := json.Unmarshal(data, &s); err != nil {
return err
}
parsedName, err := parseName(s)
if err != nil {
return err
}
*n = parsedName
return nil
}
func parseName(s string) (name, error) {
n := name(s)
if n.IsValid() {
return n, nil
}
return n, fmt.Errorf("invalid condition name '%v'", s)
}