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minio/pkg/lifecycle/rule.go

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2.5 KiB

/*
* MinIO Cloud Storage, (C) 2019 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 lifecycle
import (
"encoding/xml"
"errors"
)
// Rule - a rule for lifecycle configuration.
type Rule struct {
XMLName xml.Name `xml:"Rule"`
ID string `xml:"ID,omitempty"`
Status string `xml:"Status"`
Filter Filter `xml:"Filter"`
Expiration Expiration `xml:"Expiration,omitempty"`
Transition Transition `xml:"Transition,omitempty"`
// FIXME: add a type to catch unsupported AbortIncompleteMultipartUpload AbortIncompleteMultipartUpload `xml:"AbortIncompleteMultipartUpload,omitempty"`
NoncurrentVersionExpiration NoncurrentVersionExpiration `xml:"NoncurrentVersionExpiration,omitempty"`
NoncurrentVersionTransition NoncurrentVersionTransition `xml:"NoncurrentVersionTransition,omitempty"`
}
var (
errInvalidRuleID = errors.New("ID must be less than 255 characters")
errEmptyRuleStatus = errors.New("Status should not be empty")
errInvalidRuleStatus = errors.New("Status must be set to either Enabled or Disabled")
errMissingExpirationAction = errors.New("No expiration action found")
)
// isIDValid - checks if ID is valid or not.
func (r Rule) validateID() error {
// cannot be longer than 255 characters
if len(string(r.ID)) > 255 {
return errInvalidRuleID
}
return nil
}
// isStatusValid - checks if status is valid or not.
func (r Rule) validateStatus() error {
// Status can't be empty
if len(r.Status) == 0 {
return errEmptyRuleStatus
}
// Status must be one of Enabled or Disabled
if r.Status != "Enabled" && r.Status != "Disabled" {
return errInvalidRuleStatus
}
return nil
}
func (r Rule) validateAction() error {
if r.Expiration == (Expiration{}) {
return errMissingExpirationAction
}
return nil
}
// Validate - validates the rule element
func (r Rule) Validate() error {
if err := r.validateID(); err != nil {
return err
}
if err := r.validateStatus(); err != nil {
return err
}
if err := r.validateAction(); err != nil {
return err
}
return nil
}