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versioning.go
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versioning.go
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/*
* MinIO Cloud Storage, (C) 2020 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 versioning
import (
"encoding/xml"
"io"
)
// State - enabled/disabled/suspended states
// for multifactor and status of versioning.
type State string
// Various supported states
const (
Enabled State = "Enabled"
// Disabled State = "Disabled" only used by MFA Delete not supported yet.
Suspended State = "Suspended"
)
// Versioning - Configuration for bucket versioning.
type Versioning struct {
XMLNS string `xml:"xmlns,attr,omitempty"`
XMLName xml.Name `xml:"VersioningConfiguration"`
// MFADelete State `xml:"MFADelete,omitempty"` // not supported yet.
Status State `xml:"Status,omitempty"`
}
// Validate - validates the versioning configuration
func (v Versioning) Validate() error {
// Not supported yet
// switch v.MFADelete {
// case Enabled, Disabled:
// default:
// return Errorf("unsupported MFADelete state %s", v.MFADelete)
// }
switch v.Status {
case Enabled, Suspended:
default:
return Errorf("unsupported Versioning status %s", v.Status)
}
return nil
}
// Enabled - returns true if versioning is enabled
func (v Versioning) Enabled() bool {
return v.Status == Enabled
}
// Suspended - returns true if versioning is suspended
func (v Versioning) Suspended() bool {
return v.Status == Suspended
}
// ParseConfig - parses data in given reader to VersioningConfiguration.
func ParseConfig(reader io.Reader) (*Versioning, error) {
var v Versioning
if err := xml.NewDecoder(reader).Decode(&v); err != nil {
return nil, err
}
if err := v.Validate(); err != nil {
return nil, err
}
return &v, nil
}