mirror of
https://github.com/minio/minio
synced 2024-07-22 02:44:15 +00:00
95bf4a57b6
Create new code paths for multiple subsystems in the code. This will make maintaing this easier later. Also introduce bugLogIf() for errors that should not happen in the first place.
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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)
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// markerTagVersion is the marker version.
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// Should not need to be updated unless a fundamental change is made to the marker format.
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const markerTagVersion = "v2"
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// parseMarker will parse a marker possibly encoded with encodeMarker
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func (o *listPathOptions) parseMarker() {
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s := o.Marker
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if !strings.Contains(s, "[minio_cache:"+markerTagVersion) {
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return
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}
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start := strings.LastIndex(s, "[")
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o.Marker = s[:start]
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end := strings.LastIndex(s, "]")
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tag := strings.Trim(s[start:end], "[]")
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tags := strings.Split(tag, ",")
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for _, tag := range tags {
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kv := strings.Split(tag, ":")
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if len(kv) < 2 {
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continue
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}
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switch kv[0] {
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case "minio_cache":
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if kv[1] != markerTagVersion {
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continue
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}
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case "id":
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o.ID = kv[1]
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case "return":
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o.ID = mustGetUUID()
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o.Create = true
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case "p": // pool
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v, err := strconv.ParseInt(kv[1], 10, 64)
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if err != nil {
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o.ID = mustGetUUID()
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o.Create = true
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continue
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}
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o.pool = int(v)
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case "s": // set
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v, err := strconv.ParseInt(kv[1], 10, 64)
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if err != nil {
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o.ID = mustGetUUID()
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o.Create = true
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continue
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}
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o.set = int(v)
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default:
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// Ignore unknown
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}
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}
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}
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// encodeMarker will encode a uuid and return it as a marker.
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// uuid cannot contain '[', ':' or ','.
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func (o listPathOptions) encodeMarker(marker string) string {
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if o.ID == "" {
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// Mark as returning listing...
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return fmt.Sprintf("%s[minio_cache:%s,return:]", marker, markerTagVersion)
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}
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if strings.ContainsAny(o.ID, "[:,") {
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internalLogIf(context.Background(), fmt.Errorf("encodeMarker: uuid %s contained invalid characters", o.ID))
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}
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return fmt.Sprintf("%s[minio_cache:%s,id:%s,p:%d,s:%d]", marker, markerTagVersion, o.ID, o.pool, o.set)
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}
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