mirror of https://github.com/minio/minio.git
75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program 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 Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package lifecycle
|
|
|
|
import (
|
|
"encoding/xml"
|
|
)
|
|
|
|
var errDuplicateTagKey = Errorf("Duplicate Tag Keys are not allowed")
|
|
|
|
// And - a tag to combine a prefix and multiple tags for lifecycle configuration rule.
|
|
type And struct {
|
|
XMLName xml.Name `xml:"And"`
|
|
Prefix Prefix `xml:"Prefix,omitempty"`
|
|
Tags []Tag `xml:"Tag,omitempty"`
|
|
}
|
|
|
|
// isEmpty returns true if Tags field is null
|
|
func (a And) isEmpty() bool {
|
|
return len(a.Tags) == 0 && !a.Prefix.set
|
|
}
|
|
|
|
// Validate - validates the And field
|
|
func (a And) Validate() error {
|
|
emptyPrefix := !a.Prefix.set
|
|
emptyTags := len(a.Tags) == 0
|
|
|
|
if emptyPrefix && emptyTags {
|
|
return nil
|
|
}
|
|
|
|
if emptyPrefix && !emptyTags || !emptyPrefix && emptyTags {
|
|
return errXMLNotWellFormed
|
|
}
|
|
|
|
if a.ContainsDuplicateTag() {
|
|
return errDuplicateTagKey
|
|
}
|
|
for _, t := range a.Tags {
|
|
if err := t.Validate(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ContainsDuplicateTag - returns true if duplicate keys are present in And
|
|
func (a And) ContainsDuplicateTag() bool {
|
|
x := make(map[string]struct{}, len(a.Tags))
|
|
|
|
for _, t := range a.Tags {
|
|
if _, has := x[t.Key]; has {
|
|
return true
|
|
}
|
|
x[t.Key] = struct{}{}
|
|
}
|
|
|
|
return false
|
|
}
|