mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
131 lines
3.5 KiB
Go
131 lines
3.5 KiB
Go
package command
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"strconv"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/storage/needle_map"
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"github.com/chrislusf/seaweedfs/weed/storage/super_block"
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"github.com/chrislusf/seaweedfs/weed/storage/types"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func init() {
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cmdFix.Run = runFix // break init cycle
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}
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var cmdFix = &Command{
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UsageLine: "fix -dir=/tmp -volumeId=234",
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Short: "run weed tool fix on index file if corrupted",
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Long: `Fix runs the SeaweedFS fix command to re-create the index .idx file.
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`,
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}
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var (
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fixVolumePath = cmdFix.Flag.String("dir", ".", "data directory to store files")
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fixVolumeCollection = cmdFix.Flag.String("collection", "", "the volume collection name")
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fixVolumeId = cmdFix.Flag.Int("volumeId", 0, "an optional volume id.")
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)
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type VolumeFileScanner4Fix struct {
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version needle.Version
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nm *needle_map.MemDb
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}
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func (scanner *VolumeFileScanner4Fix) VisitSuperBlock(superBlock super_block.SuperBlock) error {
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scanner.version = superBlock.Version
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return nil
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}
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func (scanner *VolumeFileScanner4Fix) ReadNeedleBody() bool {
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return false
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}
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func (scanner *VolumeFileScanner4Fix) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
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glog.V(2).Infof("key %d offset %d size %d disk_size %d compressed %v", n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsCompressed())
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if n.Size.IsValid() {
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pe := scanner.nm.Set(n.Id, types.ToOffset(offset), n.Size)
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glog.V(2).Infof("saved %d with error %v", n.Size, pe)
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} else {
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glog.V(2).Infof("skipping deleted file ...")
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return scanner.nm.Delete(n.Id)
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}
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return nil
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}
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func runFix(cmd *Command, args []string) bool {
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dir := util.ResolvePath(*fixVolumePath)
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if *fixVolumeId != 0 {
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doFixOneVolume(dir, *fixVolumeCollection, needle.VolumeId(*fixVolumeId))
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return true
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}
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files, err := ioutil.ReadDir(dir)
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if err != nil {
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fmt.Println(err)
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return false
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}
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for _, file := range files {
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if !strings.HasSuffix(file.Name(), ".dat") {
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continue
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}
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if *fixVolumeCollection != "" {
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if !strings.HasPrefix(file.Name(), *fixVolumeCollection+"_") {
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continue
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}
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}
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baseFileName := file.Name()[:len(file.Name())-4]
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collection, volumeIdStr := "", baseFileName
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if sepIndex := strings.LastIndex(baseFileName, "_"); sepIndex > 0 {
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collection = baseFileName[:sepIndex]
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volumeIdStr = baseFileName[sepIndex+1:]
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}
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volumeId, parseErr := strconv.ParseInt(volumeIdStr, 10, 64)
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if parseErr != nil {
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fmt.Printf("Failed to parse volume id from %s: %v\n", baseFileName, parseErr)
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return false
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}
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doFixOneVolume(dir, collection, needle.VolumeId(volumeId))
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}
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return true
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}
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func doFixOneVolume(dir, collection string, volumeId needle.VolumeId) {
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baseFileName := strconv.Itoa(int(volumeId))
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if collection != "" {
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baseFileName = collection + "_" + baseFileName
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}
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indexFileName := path.Join(dir, baseFileName+".idx")
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nm := needle_map.NewMemDb()
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defer nm.Close()
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vid := needle.VolumeId(*fixVolumeId)
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scanner := &VolumeFileScanner4Fix{
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nm: nm,
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}
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if err := storage.ScanVolumeFile(dir, collection, vid, storage.NeedleMapInMemory, scanner); err != nil {
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glog.Fatalf("scan .dat File: %v", err)
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os.Remove(indexFileName)
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}
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if err := nm.SaveToIdx(indexFileName); err != nil {
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glog.Fatalf("save to .idx File: %v", err)
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os.Remove(indexFileName)
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}
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}
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