mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-05-02 09:31:38 +02:00
96 lines
2.5 KiB
Go
96 lines
2.5 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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"path/filepath"
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"github.com/chrislusf/seaweedfs/weed/util/log"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/storage/backend"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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"github.com/chrislusf/seaweedfs/weed/storage/super_block"
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)
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var (
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volumePath = flag.String("dir", "/tmp", "data directory to store files")
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volumeCollection = flag.String("collection", "", "the volume collection name")
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volumeId = flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
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)
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func Checksum(n *needle.Needle) string {
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return fmt.Sprintf("%s%x", n.Id, n.Cookie)
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}
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type VolumeFileScanner4SeeDat struct {
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version needle.Version
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block super_block.SuperBlock
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dir string
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hashes map[string]bool
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dat *os.File
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datBackend backend.BackendStorageFile
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock super_block.SuperBlock) error {
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scanner.version = superBlock.Version
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scanner.block = superBlock
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return nil
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}
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func (scanner *VolumeFileScanner4SeeDat) ReadNeedleBody() bool {
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return true
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
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if scanner.datBackend == nil {
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newFileName := filepath.Join(*volumePath, "dat_fixed")
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newDatFile, err := os.Create(newFileName)
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if err != nil {
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log.Fatalf("Write New Volume Data %v", err)
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}
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scanner.datBackend = backend.NewDiskFile(newDatFile)
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scanner.datBackend.WriteAt(scanner.block.Bytes(), 0)
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}
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checksum := Checksum(n)
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if scanner.hashes[checksum] {
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log.Infof("duplicate checksum:%s fid:%d,%s%x @ offset:%d", checksum, *volumeId, n.Id, n.Cookie, offset)
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return nil
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}
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scanner.hashes[checksum] = true
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_, s, _, e := n.Append(scanner.datBackend, scanner.version)
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fmt.Printf("size %d error %v\n", s, e)
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return nil
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}
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func main() {
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flag.Parse()
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vid := needle.VolumeId(*volumeId)
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outpath, _ := filepath.Abs(filepath.Dir(os.Args[0]))
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scanner := &VolumeFileScanner4SeeDat{
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dir: filepath.Join(outpath, "out"),
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hashes: map[string]bool{},
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}
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if _, err := os.Stat(scanner.dir); err != nil {
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if err := os.MkdirAll(scanner.dir, os.ModePerm); err != nil {
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log.Fatalf("could not create output dir : %s", err)
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}
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}
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err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid, storage.NeedleMapInMemory, scanner)
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if err != nil {
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log.Fatalf("Reading Volume File [ERROR] %s\n", err)
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}
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}
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