snapshot of https://github.com/seaweedfs/seaweedfs.git (master, 2026-09-16; blobs > 131072B omitted)

unmaintained/remove_duplicate_fids/remove_duplicate_fids.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/storage"
+	"github.com/seaweedfs/seaweedfs/weed/storage/backend"
+	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
+	"github.com/seaweedfs/seaweedfs/weed/storage/super_block"
+	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
+)
+
+var (
+	volumePath       = flag.String("dir", "/tmp", "data directory to store files")
+	volumeCollection = flag.String("collection", "", "the volume collection name")
+	volumeId         = flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
+)
+
+func Checksum(n *needle.Needle) string {
+	return fmt.Sprintf("%s%x", n.Id, n.Cookie)
+}
+
+type VolumeFileScanner4SeeDat struct {
+	version needle.Version
+	block   super_block.SuperBlock
+
+	dir        string
+	hashes     map[string]bool
+	dat        *os.File
+	datBackend backend.BackendStorageFile
+}
+
+func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock super_block.SuperBlock) error {
+	scanner.version = superBlock.Version
+	scanner.block = superBlock
+	return nil
+
+}
+func (scanner *VolumeFileScanner4SeeDat) ReadNeedleBody() bool {
+	return true
+}
+
+func (scanner *VolumeFileScanner4SeeDat) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
+
+	if scanner.datBackend == nil {
+		newFileName := filepath.Join(*volumePath, "dat_fixed")
+		newDatFile, err := os.Create(newFileName)
+		if err != nil {
+			glog.Fatalf("Write New Volume Data %v", err)
+		}
+		scanner.datBackend = backend.NewDiskFile(newDatFile)
+		scanner.datBackend.WriteAt(scanner.block.Bytes(), 0)
+	}
+
+	checksum := Checksum(n)
+
+	if scanner.hashes[checksum] {
+		glog.V(0).Infof("duplicate checksum:%s fid:%d,%s%x @ offset:%d", checksum, *volumeId, n.Id, n.Cookie, offset)
+		return nil
+	}
+	scanner.hashes[checksum] = true
+
+	_, s, _, e := n.Append(scanner.datBackend, scanner.version)
+	fmt.Printf("size %d error %v\n", s, e)
+
+	return nil
+}
+
+func main() {
+	flag.Parse()
+	util_http.InitGlobalHttpClient()
+
+	vid := needle.VolumeId(*volumeId)
+
+	outpath, _ := filepath.Abs(filepath.Dir(os.Args[0]))
+
+	scanner := &VolumeFileScanner4SeeDat{
+		dir:    filepath.Join(outpath, "out"),
+		hashes: map[string]bool{},
+	}
+
+	if _, err := os.Stat(scanner.dir); err != nil {
+		if err := os.MkdirAll(scanner.dir, os.ModePerm); err != nil {
+			glog.Fatalf("could not create output dir : %s", err)
+		}
+	}
+
+	err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid, storage.NeedleMapInMemory, scanner)
+	if err != nil {
+		glog.Fatalf("Reading Volume File [ERROR] %s\n", err)
+	}
+
+}