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Copy patharn.go
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83 lines (70 loc) · 1.91 KB
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/*
* 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 event
import (
"encoding/xml"
"strings"
)
// ARN - SQS resource name representation.
type ARN struct {
TargetID
region string
}
// String - returns string representation.
func (arn ARN) String() string {
if arn.TargetID.ID == "" && arn.TargetID.Name == "" && arn.region == "" {
return ""
}
return "arn:minio:sqs:" + arn.region + ":" + arn.TargetID.String()
}
// MarshalXML - encodes to XML data.
func (arn ARN) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
return e.EncodeElement(arn.String(), start)
}
// UnmarshalXML - decodes XML data.
func (arn *ARN) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
var s string
if err := d.DecodeElement(&s, &start); err != nil {
return err
}
parsedARN, err := parseARN(s)
if err != nil {
return err
}
*arn = *parsedARN
return nil
}
// parseARN - parses string to ARN.
func parseARN(s string) (*ARN, error) {
// ARN must be in the format of arn:minio:sqs:<REGION>:<ID>:<TYPE>
if !strings.HasPrefix(s, "arn:minio:sqs:") {
return nil, &ErrInvalidARN{s}
}
tokens := strings.Split(s, ":")
if len(tokens) != 6 {
return nil, &ErrInvalidARN{s}
}
if tokens[4] == "" || tokens[5] == "" {
return nil, &ErrInvalidARN{s}
}
return &ARN{
region: tokens[3],
TargetID: TargetID{
ID: tokens[4],
Name: tokens[5],
},
}, nil
}