mirror of
https://github.com/minio/minio.git
synced 2024-12-25 14:45:54 -05:00
72 lines
2.0 KiB
Go
72 lines
2.0 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 cmd
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/minio/minio/cmd/logger"
|
|
)
|
|
|
|
// markerTagVersion is the marker version.
|
|
// Should not need to be updated unless a fundamental change is made to the marker format.
|
|
const markerTagVersion = "v1"
|
|
|
|
// parseMarker will parse a marker possibly encoded with encodeMarker
|
|
func parseMarker(s string) (marker, uuid string) {
|
|
if !strings.Contains(s, "[minio_cache:"+markerTagVersion) {
|
|
return s, ""
|
|
}
|
|
start := strings.LastIndex(s, "[")
|
|
marker = s[:start]
|
|
end := strings.LastIndex(s, "]")
|
|
tag := strings.Trim(s[start:end], "[]")
|
|
tags := strings.Split(tag, ",")
|
|
for _, tag := range tags {
|
|
kv := strings.Split(tag, ":")
|
|
if len(kv) < 2 {
|
|
continue
|
|
}
|
|
switch kv[0] {
|
|
case "minio_cache":
|
|
if kv[1] != markerTagVersion {
|
|
break
|
|
}
|
|
case "id":
|
|
uuid = kv[1]
|
|
default:
|
|
// Ignore unknown
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
// encodeMarker will encode a uuid and return it as a marker.
|
|
// uuid cannot contain '[', ':' or ','.
|
|
func encodeMarker(marker, uuid string) string {
|
|
if uuid == "" {
|
|
return marker
|
|
}
|
|
if strings.ContainsAny(uuid, "[:,") {
|
|
logger.LogIf(context.Background(), fmt.Errorf("encodeMarker: uuid %s contained invalid characters", uuid))
|
|
}
|
|
return fmt.Sprintf("%s[minio_cache:%s,id:%s]", marker, markerTagVersion, uuid)
|
|
}
|