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126 lines
3.6 KiB
Go
126 lines
3.6 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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jsoniter "github.com/json-iterator/go"
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)
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type versionsSorter []FileInfo
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func (v versionsSorter) Len() int { return len(v) }
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func (v versionsSorter) Swap(i, j int) { v[i], v[j] = v[j], v[i] }
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func (v versionsSorter) Less(i, j int) bool {
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if v[i].IsLatest {
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return true
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}
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if v[j].IsLatest {
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return false
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}
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return v[i].ModTime.After(v[j].ModTime)
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}
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func getFileInfoVersions(xlMetaBuf []byte, volume, path string) (FileInfoVersions, error) {
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if isXL2V1Format(xlMetaBuf) {
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var xlMeta xlMetaV2
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if err := xlMeta.Load(xlMetaBuf); err != nil {
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return FileInfoVersions{}, err
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}
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versions, latestModTime, err := xlMeta.ListVersions(volume, path)
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if err != nil {
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return FileInfoVersions{}, err
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}
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return FileInfoVersions{
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Volume: volume,
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Name: path,
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Versions: versions,
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LatestModTime: latestModTime,
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}, nil
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}
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xlMeta := &xlMetaV1Object{}
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var json = jsoniter.ConfigCompatibleWithStandardLibrary
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if err := json.Unmarshal(xlMetaBuf, xlMeta); err != nil {
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return FileInfoVersions{}, errFileCorrupt
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}
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fi, err := xlMeta.ToFileInfo(volume, path)
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if err != nil {
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return FileInfoVersions{}, err
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}
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fi.IsLatest = true // No versions so current version is latest.
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fi.XLV1 = true // indicates older version
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return FileInfoVersions{
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Volume: volume,
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Name: path,
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Versions: []FileInfo{fi},
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LatestModTime: fi.ModTime,
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}, nil
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}
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func getFileInfo(xlMetaBuf []byte, volume, path, versionID string, data bool) (FileInfo, error) {
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if isXL2V1Format(xlMetaBuf) {
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var xlMeta xlMetaV2
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if err := xlMeta.Load(xlMetaBuf); err != nil {
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return FileInfo{}, err
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}
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fi, err := xlMeta.ToFileInfo(volume, path, versionID)
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if !data || err != nil {
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return fi, err
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}
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versionID := fi.VersionID
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if versionID == "" {
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versionID = nullVersionID
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}
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fi.Data = xlMeta.data.find(versionID)
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if len(fi.Data) == 0 {
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// PR #11758 used DataDir, preserve it
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// for users who might have used master
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// branch
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fi.Data = xlMeta.data.find(fi.DataDir)
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}
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return fi, nil
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}
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xlMeta := &xlMetaV1Object{}
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var json = jsoniter.ConfigCompatibleWithStandardLibrary
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if err := json.Unmarshal(xlMetaBuf, xlMeta); err != nil {
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return FileInfo{}, errFileCorrupt
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}
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fi, err := xlMeta.ToFileInfo(volume, path)
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if err == errFileNotFound && versionID != "" {
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return fi, errFileVersionNotFound
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}
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fi.XLV1 = true // indicates older version
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return fi, err
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}
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// getXLDiskLoc will return the pool/set/disk id if it can be located in the object layer.
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// Will return -1 for unknown values.
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func getXLDiskLoc(diskID string) (poolIdx, setIdx, diskIdx int) {
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if api := newObjectLayerFn(); api != nil {
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if ep, ok := api.(*erasureServerPools); ok {
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if pool, set, disk, err := ep.getPoolAndSet(diskID); err == nil {
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return pool, set, disk
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}
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}
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}
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return -1, -1, -1
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}
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