minio/internal/bucket/replication/sourceselectioncriteria.go

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// 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 replication
import (
"encoding/xml"
)
// ReplicaModifications specifies if replica modification sync is enabled
type ReplicaModifications struct {
Status Status `xml:"Status" json:"Status"`
}
// SourceSelectionCriteria - specifies additional source selection criteria in ReplicationConfiguration.
type SourceSelectionCriteria struct {
ReplicaModifications ReplicaModifications `xml:"ReplicaModifications" json:"ReplicaModifications"`
}
// IsValid - checks whether SourceSelectionCriteria is valid or not.
func (s SourceSelectionCriteria) IsValid() bool {
return s.ReplicaModifications.Status == Enabled || s.ReplicaModifications.Status == Disabled
}
// Validate source selection criteria
func (s SourceSelectionCriteria) Validate() error {
if (s == SourceSelectionCriteria{}) {
return nil
}
if !s.IsValid() {
return errInvalidSourceSelectionCriteria
}
return nil
}
// UnmarshalXML - decodes XML data.
func (s *SourceSelectionCriteria) UnmarshalXML(dec *xml.Decoder, start xml.StartElement) (err error) {
// Make subtype to avoid recursive UnmarshalXML().
type sourceSelectionCriteria SourceSelectionCriteria
ssc := sourceSelectionCriteria{}
if err := dec.DecodeElement(&ssc, &start); err != nil {
return err
}
if len(ssc.ReplicaModifications.Status) == 0 {
ssc.ReplicaModifications.Status = Enabled
}
*s = SourceSelectionCriteria(ssc)
return nil
}
// MarshalXML - encodes to XML data.
func (s SourceSelectionCriteria) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
if err := e.EncodeToken(start); err != nil {
return err
}
if s.IsValid() {
if err := e.EncodeElement(s.ReplicaModifications, xml.StartElement{Name: xml.Name{Local: "ReplicaModifications"}}); err != nil {
return err
}
}
return e.EncodeToken(xml.EndElement{Name: start.Name})
}