mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-01 16:22:43 +02:00
extract VolumeFileScanner for ScanVolumeFile
This commit is contained in:
bingoohuang
parent
27093bc2e5
commit
6ddfaf33cb
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@ -10,8 +10,8 @@ import (
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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/util"
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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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var (
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@ -63,7 +63,7 @@ func main() {
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iterateEntries(datFile, indexFile, func(n *storage.Needle, offset int64) {
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fmt.Printf("needle id=%v name=%s size=%d dataSize=%d\n", n.Id, string(n.Name), n.Size, n.DataSize)
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s, _, e := n.Append(newDatFile, superBlock.Version())
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_, s, _, e := n.Append(newDatFile, superBlock.Version())
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fmt.Printf("size %d error %v\n", s, e)
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})
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@ -12,21 +12,31 @@ var (
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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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type VolumeFileScanner4SeeDat struct {
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version storage.Version
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock storage.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 *VolumeFileScanner4SeeDat) ReadNeedleBody() bool {
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return false
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}
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func (scanner *VolumeFileScanner4SeeDat) VisitNeedle(n *storage.Needle, offset int64) error {
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glog.V(0).Infof("%d,%s%x offset %d size %d cookie %x", *volumeId, n.Id, n.Cookie, offset, n.Size, n.Cookie)
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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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var version storage.Version
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vid := storage.VolumeId(*volumeId)
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err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid,
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storage.NeedleMapInMemory,
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func(superBlock storage.SuperBlock) error {
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version = superBlock.Version()
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return nil
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}, false, func(n *storage.Needle, offset int64) error {
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glog.V(0).Infof("%d,%s%x offset %d size %d cookie %x",
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*volumeId, n.Id, n.Cookie, offset, n.Size, n.Cookie)
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return nil
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})
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scanner := &VolumeFileScanner4SeeDat{}
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err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid, storage.NeedleMapInMemory, scanner)
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if err != nil {
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glog.Fatalf("Reading Volume File [ERROR] %s\n", err)
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}
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@ -84,6 +84,62 @@ func printNeedle(vid storage.VolumeId, n *storage.Needle, version storage.Versio
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)
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}
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type VolumeFileScanner4Export struct {
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version storage.Version
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counter int
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needleMap *storage.NeedleMap
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vid storage.VolumeId
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}
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func (scanner *VolumeFileScanner4Export) VisitSuperBlock(superBlock storage.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 *VolumeFileScanner4Export) ReadNeedleBody() bool {
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return true
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}
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func (scanner *VolumeFileScanner4Export) VisitNeedle(n *storage.Needle, offset int64) error {
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needleMap := scanner.needleMap
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vid := scanner.vid
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nv, ok := needleMap.Get(n.Id)
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glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
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n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsGzipped(), ok, nv)
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if ok && nv.Size > 0 && int64(nv.Offset)*types.NeedlePaddingSize == offset {
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if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
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glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
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n.LastModified, newerThanUnix)
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return nil
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}
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scanner.counter++
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if *limit > 0 && scanner.counter > *limit {
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return io.EOF
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}
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if tarOutputFile != nil {
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return writeFile(vid, n)
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} else {
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printNeedle(vid, n, scanner.version, false)
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return nil
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}
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}
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if !ok {
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if *showDeleted && tarOutputFile == nil {
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if n.DataSize > 0 {
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printNeedle(vid, n, scanner.version, true)
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} else {
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n.Name = []byte("*tombstone")
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printNeedle(vid, n, scanner.version, true)
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}
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}
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glog.V(2).Infof("This seems deleted %d size %d", n.Id, n.Size)
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} else {
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glog.V(2).Infof("Skipping later-updated Id %d size %d", n.Id, n.Size)
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}
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return nil
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}
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func runExport(cmd *Command, args []string) bool {
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var err error
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@ -145,55 +201,16 @@ func runExport(cmd *Command, args []string) bool {
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glog.Fatalf("cannot load needle map from %s: %s", indexFile.Name(), err)
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}
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var version storage.Version
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volumeFileScanner := &VolumeFileScanner4Export{
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needleMap: needleMap,
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vid: vid,
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}
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if tarOutputFile == nil {
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fmt.Printf("key\tname\tsize\tgzip\tmime\tmodified\tttl\tdeleted\n")
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}
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var counter = 0
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err = storage.ScanVolumeFile(*export.dir, *export.collection, vid,
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storage.NeedleMapInMemory,
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func(superBlock storage.SuperBlock) error {
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version = superBlock.Version()
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return nil
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}, true, func(n *storage.Needle, offset int64) error {
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nv, ok := needleMap.Get(n.Id)
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glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
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n.Id, offset, n.Size, n.DiskSize(version), n.IsGzipped(), ok, nv)
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if ok && nv.Size > 0 && int64(nv.Offset)*types.NeedlePaddingSize == offset {
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if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
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glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
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n.LastModified, newerThanUnix)
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return nil
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}
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counter++
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if *limit > 0 && counter > *limit {
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return io.EOF
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}
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if tarOutputFile != nil {
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return writeFile(vid, n)
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} else {
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printNeedle(vid, n, version, false)
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return nil
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}
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}
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if !ok {
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if *showDeleted && tarOutputFile == nil {
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if n.DataSize > 0 {
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printNeedle(vid, n, version, true)
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} else {
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n.Name = []byte("*tombstone")
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printNeedle(vid, n, version, true)
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}
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}
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glog.V(2).Infof("This seems deleted %d size %d", n.Id, n.Size)
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} else {
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glog.V(2).Infof("Skipping later-updated Id %d size %d", n.Id, n.Size)
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}
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return nil
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})
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err = storage.ScanVolumeFile(*export.dir, *export.collection, vid, storage.NeedleMapInMemory, volumeFileScanner)
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if err != nil && err != io.EOF {
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glog.Fatalf("Export Volume File [ERROR] %s\n", err)
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}
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@ -28,6 +28,32 @@ var (
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fixVolumeId = cmdFix.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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type VolumeFileScanner4Fix struct {
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version storage.Version
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nm *storage.NeedleMap
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}
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func (scanner *VolumeFileScanner4Fix) VisitSuperBlock(superBlock storage.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 *storage.Needle, offset int64) error {
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glog.V(2).Infof("key %d offset %d size %d disk_size %d gzip %v", n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsGzipped())
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if n.Size > 0 {
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pe := scanner.nm.Put(n.Id, types.Offset(offset/types.NeedlePaddingSize), 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, types.Offset(offset/types.NeedlePaddingSize))
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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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if *fixVolumeId == -1 {
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@ -48,24 +74,12 @@ func runFix(cmd *Command, args []string) bool {
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nm := storage.NewBtreeNeedleMap(indexFile)
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defer nm.Close()
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var version storage.Version
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vid := storage.VolumeId(*fixVolumeId)
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err = storage.ScanVolumeFile(*fixVolumePath, *fixVolumeCollection, vid,
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storage.NeedleMapInMemory,
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func(superBlock storage.SuperBlock) error {
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version = superBlock.Version()
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return nil
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}, false, func(n *storage.Needle, offset int64) error {
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glog.V(2).Infof("key %d offset %d size %d disk_size %d gzip %v", n.Id, offset, n.Size, n.DiskSize(version), n.IsGzipped())
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if n.Size > 0 {
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pe := nm.Put(n.Id, types.Offset(offset/types.NeedlePaddingSize), 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 nm.Delete(n.Id, types.Offset(offset/types.NeedlePaddingSize))
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}
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return nil
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})
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scanner := &VolumeFileScanner4Fix{
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nm: nm,
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}
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err = storage.ScanVolumeFile(*fixVolumePath, *fixVolumeCollection, vid, storage.NeedleMapInMemory, scanner)
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if err != nil {
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glog.Fatalf("Export Volume File [ERROR] %s\n", err)
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os.Remove(indexFileName)
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@ -169,16 +169,20 @@ func (v *Volume) readNeedle(n *Needle) (int, error) {
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return -1, ErrorNotFound
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}
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type VolumeFileScanner interface {
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VisitSuperBlock(SuperBlock) error
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ReadNeedleBody() bool
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VisitNeedle(n *Needle, offset int64) error
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}
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func ScanVolumeFile(dirname string, collection string, id VolumeId,
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needleMapKind NeedleMapType,
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visitSuperBlock func(SuperBlock) error,
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readNeedleBody bool,
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visitNeedle func(n *Needle, offset int64) error) (err error) {
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volumeFileScanner VolumeFileScanner) (err error) {
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var v *Volume
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if v, err = loadVolumeWithoutIndex(dirname, collection, id, needleMapKind); err != nil {
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return fmt.Errorf("Failed to load volume %d: %v", id, err)
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}
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if err = visitSuperBlock(v.SuperBlock); err != nil {
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if err = volumeFileScanner.VisitSuperBlock(v.SuperBlock); err != nil {
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return fmt.Errorf("Failed to process volume %d super block: %v", id, err)
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}
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defer v.Close()
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@ -192,14 +196,14 @@ func ScanVolumeFile(dirname string, collection string, id VolumeId,
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return
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}
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for n != nil {
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if readNeedleBody {
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if volumeFileScanner.ReadNeedleBody() {
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if err = n.ReadNeedleBody(v.dataFile, version, offset+NeedleEntrySize, rest); err != nil {
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glog.V(0).Infof("cannot read needle body: %v", err)
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//err = fmt.Errorf("cannot read needle body: %v", err)
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//return
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}
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}
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err = visitNeedle(n, offset)
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err = volumeFileScanner.VisitNeedle(n, offset)
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if err == io.EOF {
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return nil
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}
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@ -180,11 +180,11 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
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return fmt.Errorf("oldDatFile %s 's compact revision is %d while newDatFile %s 's compact revision is %d", oldDatFileName, oldDatCompactRevision, newDatFileName, newDatCompactRevision)
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}
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idx_entry_bytes := make([]byte, NeedleIdSize+OffsetSize+SizeSize)
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for key, incre_idx_entry := range incrementedHasUpdatedIndexEntry {
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NeedleIdToBytes(idx_entry_bytes[0:NeedleIdSize], key)
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OffsetToBytes(idx_entry_bytes[NeedleIdSize:NeedleIdSize+OffsetSize], incre_idx_entry.offset)
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util.Uint32toBytes(idx_entry_bytes[NeedleIdSize+OffsetSize:NeedleIdSize+OffsetSize+SizeSize], incre_idx_entry.size)
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idxEntryBytes := make([]byte, NeedleIdSize+OffsetSize+SizeSize)
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for key, increIdxEntry := range incrementedHasUpdatedIndexEntry {
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NeedleIdToBytes(idxEntryBytes[0:NeedleIdSize], key)
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OffsetToBytes(idxEntryBytes[NeedleIdSize:NeedleIdSize+OffsetSize], increIdxEntry.offset)
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util.Uint32toBytes(idxEntryBytes[NeedleIdSize+OffsetSize:NeedleIdSize+OffsetSize+SizeSize], increIdxEntry.size)
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var offset int64
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if offset, err = dst.Seek(0, 2); err != nil {
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@ -201,16 +201,16 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
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}
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//updated needle
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if incre_idx_entry.offset != 0 && incre_idx_entry.size != 0 && incre_idx_entry.size != TombstoneFileSize {
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if increIdxEntry.offset != 0 && increIdxEntry.size != 0 && increIdxEntry.size != TombstoneFileSize {
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//even the needle cache in memory is hit, the need_bytes is correct
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glog.V(4).Infof("file %d offset %d size %d", key, int64(incre_idx_entry.offset)*NeedlePaddingSize, incre_idx_entry.size)
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var needle_bytes []byte
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needle_bytes, err = ReadNeedleBlob(oldDatFile, int64(incre_idx_entry.offset)*NeedlePaddingSize, incre_idx_entry.size, v.Version())
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glog.V(4).Infof("file %d offset %d size %d", key, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size)
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var needleBytes []byte
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needleBytes, err = ReadNeedleBlob(oldDatFile, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size, v.Version())
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if err != nil {
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return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, int64(incre_idx_entry.offset)*NeedlePaddingSize, incre_idx_entry.size, err)
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return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size, err)
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}
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dst.Write(needle_bytes)
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util.Uint32toBytes(idx_entry_bytes[8:12], uint32(offset/NeedlePaddingSize))
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dst.Write(needleBytes)
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util.Uint32toBytes(idxEntryBytes[8:12], uint32(offset/NeedlePaddingSize))
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} else { //deleted needle
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//fakeDelNeedle 's default Data field is nil
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fakeDelNeedle := new(Needle)
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@ -221,19 +221,59 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
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if err != nil {
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return fmt.Errorf("append deleted %d failed: %v", key, err)
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}
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util.Uint32toBytes(idx_entry_bytes[8:12], uint32(0))
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util.Uint32toBytes(idxEntryBytes[8:12], uint32(0))
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}
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if _, err := idx.Seek(0, 2); err != nil {
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return fmt.Errorf("cannot seek end of indexfile %s: %v",
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newIdxFileName, err)
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}
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_, err = idx.Write(idx_entry_bytes)
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_, err = idx.Write(idxEntryBytes)
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}
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return nil
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}
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type VolumeFileScanner4Vacuum struct {
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version Version
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v *Volume
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dst *os.File
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nm *NeedleMap
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newOffset int64
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now uint64
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}
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func (scanner *VolumeFileScanner4Vacuum) VisitSuperBlock(superBlock SuperBlock) error {
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scanner.version = superBlock.Version()
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superBlock.CompactRevision++
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_, err := scanner.dst.Write(superBlock.Bytes())
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scanner.newOffset = int64(superBlock.BlockSize())
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return err
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}
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func (scanner *VolumeFileScanner4Vacuum) ReadNeedleBody() bool {
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return true
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}
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func (scanner *VolumeFileScanner4Vacuum) VisitNeedle(n *Needle, offset int64) error {
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if n.HasTtl() && scanner.now >= n.LastModified+uint64(scanner.v.Ttl.Minutes()*60) {
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return nil
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}
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nv, ok := scanner.v.nm.Get(n.Id)
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glog.V(4).Infoln("needle expected offset ", offset, "ok", ok, "nv", nv)
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if ok && int64(nv.Offset)*NeedlePaddingSize == offset && nv.Size > 0 {
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if err := scanner.nm.Put(n.Id, Offset(scanner.newOffset/NeedlePaddingSize), n.Size); err != nil {
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return fmt.Errorf("cannot put needle: %s", err)
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}
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if _, _, _, err := n.Append(scanner.dst, scanner.v.Version()); err != nil {
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return fmt.Errorf("cannot append needle: %s", err)
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}
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scanner.newOffset += n.DiskSize(scanner.version)
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glog.V(4).Infoln("saving key", n.Id, "volume offset", offset, "=>", scanner.newOffset, "data_size", n.Size)
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}
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return nil
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}
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func (v *Volume) copyDataAndGenerateIndexFile(dstName, idxName string, preallocate int64) (err error) {
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var (
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dst, idx *os.File
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@ -248,38 +288,13 @@ func (v *Volume) copyDataAndGenerateIndexFile(dstName, idxName string, prealloca
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}
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defer idx.Close()
|
||||
|
||||
nm := NewBtreeNeedleMap(idx)
|
||||
new_offset := int64(0)
|
||||
|
||||
now := uint64(time.Now().Unix())
|
||||
|
||||
var version Version
|
||||
err = ScanVolumeFile(v.dir, v.Collection, v.Id, v.needleMapKind,
|
||||
func(superBlock SuperBlock) error {
|
||||
version = superBlock.Version()
|
||||
superBlock.CompactRevision++
|
||||
_, err = dst.Write(superBlock.Bytes())
|
||||
new_offset = int64(superBlock.BlockSize())
|
||||
return err
|
||||
}, true, func(n *Needle, offset int64) error {
|
||||
if n.HasTtl() && now >= n.LastModified+uint64(v.Ttl.Minutes()*60) {
|
||||
return nil
|
||||
}
|
||||
nv, ok := v.nm.Get(n.Id)
|
||||
glog.V(4).Infoln("needle expected offset ", offset, "ok", ok, "nv", nv)
|
||||
if ok && int64(nv.Offset)*NeedlePaddingSize == offset && nv.Size > 0 {
|
||||
if err = nm.Put(n.Id, Offset(new_offset/NeedlePaddingSize), n.Size); err != nil {
|
||||
return fmt.Errorf("cannot put needle: %s", err)
|
||||
}
|
||||
if _, _, _, err := n.Append(dst, v.Version()); err != nil {
|
||||
return fmt.Errorf("cannot append needle: %s", err)
|
||||
}
|
||||
new_offset += n.DiskSize(version)
|
||||
glog.V(4).Infoln("saving key", n.Id, "volume offset", offset, "=>", new_offset, "data_size", n.Size)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
|
||||
scanner := &VolumeFileScanner4Vacuum{
|
||||
v: v,
|
||||
now: uint64(time.Now().Unix()),
|
||||
nm: NewBtreeNeedleMap(idx),
|
||||
dst: dst,
|
||||
}
|
||||
err = ScanVolumeFile(v.dir, v.Collection, v.Id, v.needleMapKind, scanner)
|
||||
return
|
||||
}
|
||||
|
||||
|
|
@ -307,7 +322,7 @@ func (v *Volume) copyDataBasedOnIndexFile(dstName, idxName string) (err error) {
|
|||
|
||||
v.SuperBlock.CompactRevision++
|
||||
dst.Write(v.SuperBlock.Bytes())
|
||||
new_offset := int64(v.SuperBlock.BlockSize())
|
||||
newOffset := int64(v.SuperBlock.BlockSize())
|
||||
|
||||
WalkIndexFile(oldIndexFile, func(key NeedleId, offset Offset, size uint32) error {
|
||||
if offset == 0 || size == TombstoneFileSize {
|
||||
|
|
@ -328,14 +343,14 @@ func (v *Volume) copyDataBasedOnIndexFile(dstName, idxName string) (err error) {
|
|||
|
||||
glog.V(4).Infoln("needle expected offset ", offset, "ok", ok, "nv", nv)
|
||||
if nv.Offset == offset && nv.Size > 0 {
|
||||
if err = nm.Put(n.Id, Offset(new_offset/NeedlePaddingSize), n.Size); err != nil {
|
||||
if err = nm.Put(n.Id, Offset(newOffset/NeedlePaddingSize), n.Size); err != nil {
|
||||
return fmt.Errorf("cannot put needle: %s", err)
|
||||
}
|
||||
if _, _, _, err = n.Append(dst, v.Version()); err != nil {
|
||||
return fmt.Errorf("cannot append needle: %s", err)
|
||||
}
|
||||
new_offset += n.DiskSize(v.Version())
|
||||
glog.V(3).Infoln("saving key", n.Id, "volume offset", offset, "=>", new_offset, "data_size", n.Size)
|
||||
newOffset += n.DiskSize(v.Version())
|
||||
glog.V(3).Infoln("saving key", n.Id, "volume offset", offset, "=>", newOffset, "data_size", n.Size)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
|
|
|
|||
Loading…
Reference in a new issue