You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
3.5 KiB
126 lines
3.5 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 (
|
|
"bytes"
|
|
"encoding/xml"
|
|
)
|
|
|
|
// 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,omitempty"`
|
|
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 = Errorf("ID must be less than 255 characters")
|
|
errEmptyRuleStatus = Errorf("Status should not be empty")
|
|
errInvalidRuleStatus = Errorf("Status must be set to either Enabled or Disabled")
|
|
errMissingExpirationAction = Errorf("No expiration action found")
|
|
)
|
|
|
|
// validateID - 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
|
|
}
|
|
|
|
// validateStatus - 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
|
|
}
|
|
|
|
func (r Rule) validateFilter() error {
|
|
return r.Filter.Validate()
|
|
}
|
|
|
|
// Prefix - a rule can either have prefix under <filter></filter> or under
|
|
// <filter><and></and></filter>. This method returns the prefix from the
|
|
// location where it is available
|
|
func (r Rule) Prefix() string {
|
|
if r.Filter.Prefix != "" {
|
|
return r.Filter.Prefix
|
|
}
|
|
if r.Filter.And.Prefix != "" {
|
|
return r.Filter.And.Prefix
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// Tags - a rule can either have tag under <filter></filter> or under
|
|
// <filter><and></and></filter>. This method returns all the tags from the
|
|
// rule in the format tag1=value1&tag2=value2
|
|
func (r Rule) Tags() string {
|
|
if !r.Filter.Tag.IsEmpty() {
|
|
return r.Filter.Tag.String()
|
|
}
|
|
if len(r.Filter.And.Tags) != 0 {
|
|
var buf bytes.Buffer
|
|
for _, t := range r.Filter.And.Tags {
|
|
if buf.Len() > 0 {
|
|
buf.WriteString("&")
|
|
}
|
|
buf.WriteString(t.String())
|
|
}
|
|
return buf.String()
|
|
}
|
|
return ""
|
|
}
|
|
|
|
// 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
|
|
}
|
|
if err := r.validateFilter(); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|