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extract VolumeFileScanner for ScanVolumeFile

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This commit is contained in:
bingoohuang 2019-01-16 17:48:59 +08:00
parent 27093bc2e5
commit 6ddfaf33cb
6 changed files with 190 additions and 130 deletions
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4
unmaintained/fix_dat/fix_dat.go
View File

@ -10,8 +10,8 @@ import (
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/storage"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/util"
)
var (
@ -63,7 +63,7 @@ func main() {
iterateEntries(datFile, indexFile, func(n *storage.Needle, offset int64) {
fmt.Printf("needle id=%v name=%s size=%d dataSize=%d\n", n.Id, string(n.Name), n.Size, n.DataSize)
s, _, e := n.Append(newDatFile, superBlock.Version())
_, s, _, e := n.Append(newDatFile, superBlock.Version())
fmt.Printf("size %d error %v\n", s, e)
})

32
unmaintained/see_dat/see_dat.go
View File

@ -12,21 +12,31 @@ var (
volumeId = flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
)
type VolumeFileScanner4SeeDat struct {
version storage.Version
}
func (scanner *VolumeFileScanner4SeeDat) VisitSuperBlock(superBlock storage.SuperBlock) error {
scanner.version = superBlock.Version()
return nil
}
func (scanner *VolumeFileScanner4SeeDat) ReadNeedleBody() bool {
return false
}
func (scanner *VolumeFileScanner4SeeDat) VisitNeedle(n *storage.Needle, offset int64) error {
glog.V(0).Infof("%d,%s%x offset %d size %d cookie %x", *volumeId, n.Id, n.Cookie, offset, n.Size, n.Cookie)
return nil
}
func main() {
flag.Parse()
var version storage.Version
vid := storage.VolumeId(*volumeId)
err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid,
storage.NeedleMapInMemory,
func(superBlock storage.SuperBlock) error {
version = superBlock.Version()
return nil
}, false, func(n *storage.Needle, offset int64) error {
glog.V(0).Infof("%d,%s%x offset %d size %d cookie %x",
*volumeId, n.Id, n.Cookie, offset, n.Size, n.Cookie)
return nil
})
scanner := &VolumeFileScanner4SeeDat{}
err := storage.ScanVolumeFile(*volumePath, *volumeCollection, vid, storage.NeedleMapInMemory, scanner)
if err != nil {
glog.Fatalf("Reading Volume File [ERROR] %s\n", err)
}

105
weed/command/export.go
View File

@ -84,6 +84,62 @@ func printNeedle(vid storage.VolumeId, n *storage.Needle, version storage.Versio
)
}
type VolumeFileScanner4Export struct {
version storage.Version
counter int
needleMap *storage.NeedleMap
vid storage.VolumeId
}
func (scanner *VolumeFileScanner4Export) VisitSuperBlock(superBlock storage.SuperBlock) error {
scanner.version = superBlock.Version()
return nil
}
func (scanner *VolumeFileScanner4Export) ReadNeedleBody() bool {
return true
}
func (scanner *VolumeFileScanner4Export) VisitNeedle(n *storage.Needle, offset int64) error {
needleMap := scanner.needleMap
vid := scanner.vid
nv, ok := needleMap.Get(n.Id)
glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsGzipped(), ok, nv)
if ok && nv.Size > 0 && int64(nv.Offset)*types.NeedlePaddingSize == offset {
if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
n.LastModified, newerThanUnix)
return nil
}
scanner.counter++
if *limit > 0 && scanner.counter > *limit {
return io.EOF
}
if tarOutputFile != nil {
return writeFile(vid, n)
} else {
printNeedle(vid, n, scanner.version, false)
return nil
}
}
if !ok {
if *showDeleted && tarOutputFile == nil {
if n.DataSize > 0 {
printNeedle(vid, n, scanner.version, true)
} else {
n.Name = []byte("*tombstone")
printNeedle(vid, n, scanner.version, true)
}
}
glog.V(2).Infof("This seems deleted %d size %d", n.Id, n.Size)
} else {
glog.V(2).Infof("Skipping later-updated Id %d size %d", n.Id, n.Size)
}
return nil
}
func runExport(cmd *Command, args []string) bool {
var err error
@ -145,55 +201,16 @@ func runExport(cmd *Command, args []string) bool {
glog.Fatalf("cannot load needle map from %s: %s", indexFile.Name(), err)
}
var version storage.Version
volumeFileScanner := &VolumeFileScanner4Export{
needleMap: needleMap,
vid: vid,
}
if tarOutputFile == nil {
fmt.Printf("key\tname\tsize\tgzip\tmime\tmodified\tttl\tdeleted\n")
}
var counter = 0
err = storage.ScanVolumeFile(*export.dir, *export.collection, vid,
storage.NeedleMapInMemory,
func(superBlock storage.SuperBlock) error {
version = superBlock.Version()
return nil
}, true, func(n *storage.Needle, offset int64) error {
nv, ok := needleMap.Get(n.Id)
glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
n.Id, offset, n.Size, n.DiskSize(version), n.IsGzipped(), ok, nv)
if ok && nv.Size > 0 && int64(nv.Offset)*types.NeedlePaddingSize == offset {
if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
n.LastModified, newerThanUnix)
return nil
}
counter++
if *limit > 0 && counter > *limit {
return io.EOF
}
if tarOutputFile != nil {
return writeFile(vid, n)
} else {
printNeedle(vid, n, version, false)
return nil
}
}
if !ok {
if *showDeleted && tarOutputFile == nil {
if n.DataSize > 0 {
printNeedle(vid, n, version, true)
} else {
n.Name = []byte("*tombstone")
printNeedle(vid, n, version, true)
}
}
glog.V(2).Infof("This seems deleted %d size %d", n.Id, n.Size)
} else {
glog.V(2).Infof("Skipping later-updated Id %d size %d", n.Id, n.Size)
}
return nil
})
err = storage.ScanVolumeFile(*export.dir, *export.collection, vid, storage.NeedleMapInMemory, volumeFileScanner)
if err != nil && err != io.EOF {
glog.Fatalf("Export Volume File [ERROR] %s\n", err)
}

48
weed/command/fix.go
View File

@ -28,6 +28,32 @@ var (
fixVolumeId = cmdFix.Flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir. The volume index file should not exist.")
)
type VolumeFileScanner4Fix struct {
version storage.Version
nm *storage.NeedleMap
}
func (scanner *VolumeFileScanner4Fix) VisitSuperBlock(superBlock storage.SuperBlock) error {
scanner.version = superBlock.Version()
return nil
}
func (scanner *VolumeFileScanner4Fix) ReadNeedleBody() bool {
return false
}
func (scanner *VolumeFileScanner4Fix) VisitNeedle(n *storage.Needle, offset int64) error {
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())
if n.Size > 0 {
pe := scanner.nm.Put(n.Id, types.Offset(offset/types.NeedlePaddingSize), n.Size)
glog.V(2).Infof("saved %d with error %v", n.Size, pe)
} else {
glog.V(2).Infof("skipping deleted file ...")
return scanner.nm.Delete(n.Id, types.Offset(offset/types.NeedlePaddingSize))
}
return nil
}
func runFix(cmd *Command, args []string) bool {
if *fixVolumeId == -1 {
@ -48,24 +74,12 @@ func runFix(cmd *Command, args []string) bool {
nm := storage.NewBtreeNeedleMap(indexFile)
defer nm.Close()
var version storage.Version
vid := storage.VolumeId(*fixVolumeId)
err = storage.ScanVolumeFile(*fixVolumePath, *fixVolumeCollection, vid,
storage.NeedleMapInMemory,
func(superBlock storage.SuperBlock) error {
version = superBlock.Version()
return nil
}, false, func(n *storage.Needle, offset int64) error {
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())
if n.Size > 0 {
pe := nm.Put(n.Id, types.Offset(offset/types.NeedlePaddingSize), n.Size)
glog.V(2).Infof("saved %d with error %v", n.Size, pe)
} else {
glog.V(2).Infof("skipping deleted file ...")
return nm.Delete(n.Id, types.Offset(offset/types.NeedlePaddingSize))
}
return nil
})
scanner := &VolumeFileScanner4Fix{
nm: nm,
}
err = storage.ScanVolumeFile(*fixVolumePath, *fixVolumeCollection, vid, storage.NeedleMapInMemory, scanner)
if err != nil {
glog.Fatalf("Export Volume File [ERROR] %s\n", err)
os.Remove(indexFileName)

16
weed/storage/volume_read_write.go
View File

@ -169,16 +169,20 @@ func (v *Volume) readNeedle(n *Needle) (int, error) {
return -1, ErrorNotFound
}
type VolumeFileScanner interface {
VisitSuperBlock(SuperBlock) error
ReadNeedleBody() bool
VisitNeedle(n *Needle, offset int64) error
}
func ScanVolumeFile(dirname string, collection string, id VolumeId,
needleMapKind NeedleMapType,
visitSuperBlock func(SuperBlock) error,
readNeedleBody bool,
visitNeedle func(n *Needle, offset int64) error) (err error) {
volumeFileScanner VolumeFileScanner) (err error) {
var v *Volume
if v, err = loadVolumeWithoutIndex(dirname, collection, id, needleMapKind); err != nil {
return fmt.Errorf("Failed to load volume %d: %v", id, err)
}
if err = visitSuperBlock(v.SuperBlock); err != nil {
if err = volumeFileScanner.VisitSuperBlock(v.SuperBlock); err != nil {
return fmt.Errorf("Failed to process volume %d super block: %v", id, err)
}
defer v.Close()
@ -192,14 +196,14 @@ func ScanVolumeFile(dirname string, collection string, id VolumeId,
return
}
for n != nil {
if readNeedleBody {
if volumeFileScanner.ReadNeedleBody() {
if err = n.ReadNeedleBody(v.dataFile, version, offset+NeedleEntrySize, rest); err != nil {
glog.V(0).Infof("cannot read needle body: %v", err)
//err = fmt.Errorf("cannot read needle body: %v", err)
//return
}
}
err = visitNeedle(n, offset)
err = volumeFileScanner.VisitNeedle(n, offset)
if err == io.EOF {
return nil
}

115
weed/storage/volume_vacuum.go
View File

@ -180,11 +180,11 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
return fmt.Errorf("oldDatFile %s 's compact revision is %d while newDatFile %s 's compact revision is %d", oldDatFileName, oldDatCompactRevision, newDatFileName, newDatCompactRevision)
}
idx_entry_bytes := make([]byte, NeedleIdSize+OffsetSize+SizeSize)
for key, incre_idx_entry := range incrementedHasUpdatedIndexEntry {
NeedleIdToBytes(idx_entry_bytes[0:NeedleIdSize], key)
OffsetToBytes(idx_entry_bytes[NeedleIdSize:NeedleIdSize+OffsetSize], incre_idx_entry.offset)
util.Uint32toBytes(idx_entry_bytes[NeedleIdSize+OffsetSize:NeedleIdSize+OffsetSize+SizeSize], incre_idx_entry.size)
idxEntryBytes := make([]byte, NeedleIdSize+OffsetSize+SizeSize)
for key, increIdxEntry := range incrementedHasUpdatedIndexEntry {
NeedleIdToBytes(idxEntryBytes[0:NeedleIdSize], key)
OffsetToBytes(idxEntryBytes[NeedleIdSize:NeedleIdSize+OffsetSize], increIdxEntry.offset)
util.Uint32toBytes(idxEntryBytes[NeedleIdSize+OffsetSize:NeedleIdSize+OffsetSize+SizeSize], increIdxEntry.size)
var offset int64
if offset, err = dst.Seek(0, 2); err != nil {
@ -201,16 +201,16 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
}
//updated needle
if incre_idx_entry.offset != 0 && incre_idx_entry.size != 0 && incre_idx_entry.size != TombstoneFileSize {
if increIdxEntry.offset != 0 && increIdxEntry.size != 0 && increIdxEntry.size != TombstoneFileSize {
//even the needle cache in memory is hit, the need_bytes is correct
glog.V(4).Infof("file %d offset %d size %d", key, int64(incre_idx_entry.offset)*NeedlePaddingSize, incre_idx_entry.size)
var needle_bytes []byte
needle_bytes, err = ReadNeedleBlob(oldDatFile, int64(incre_idx_entry.offset)*NeedlePaddingSize, incre_idx_entry.size, v.Version())
glog.V(4).Infof("file %d offset %d size %d", key, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size)
var needleBytes []byte
needleBytes, err = ReadNeedleBlob(oldDatFile, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size, v.Version())
if err != nil {
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)
return fmt.Errorf("ReadNeedleBlob %s key %d offset %d size %d failed: %v", oldDatFile.Name(), key, int64(increIdxEntry.offset)*NeedlePaddingSize, increIdxEntry.size, err)
}
dst.Write(needle_bytes)
util.Uint32toBytes(idx_entry_bytes[8:12], uint32(offset/NeedlePaddingSize))
dst.Write(needleBytes)
util.Uint32toBytes(idxEntryBytes[8:12], uint32(offset/NeedlePaddingSize))
} else { //deleted needle
//fakeDelNeedle 's default Data field is nil
fakeDelNeedle := new(Needle)
@ -221,19 +221,59 @@ func (v *Volume) makeupDiff(newDatFileName, newIdxFileName, oldDatFileName, oldI
if err != nil {
return fmt.Errorf("append deleted %d failed: %v", key, err)
}
util.Uint32toBytes(idx_entry_bytes[8:12], uint32(0))
util.Uint32toBytes(idxEntryBytes[8:12], uint32(0))
}
if _, err := idx.Seek(0, 2); err != nil {
return fmt.Errorf("cannot seek end of indexfile %s: %v",
newIdxFileName, err)
}
_, err = idx.Write(idx_entry_bytes)
_, err = idx.Write(idxEntryBytes)
}
return nil
}
type VolumeFileScanner4Vacuum struct {
version Version
v *Volume
dst *os.File
nm *NeedleMap
newOffset int64
now uint64
}
func (scanner *VolumeFileScanner4Vacuum) VisitSuperBlock(superBlock SuperBlock) error {
scanner.version = superBlock.Version()
superBlock.CompactRevision++
_, err := scanner.dst.Write(superBlock.Bytes())
scanner.newOffset = int64(superBlock.BlockSize())
return err
}
func (scanner *VolumeFileScanner4Vacuum) ReadNeedleBody() bool {
return true
}
func (scanner *VolumeFileScanner4Vacuum) VisitNeedle(n *Needle, offset int64) error {
if n.HasTtl() && scanner.now >= n.LastModified+uint64(scanner.v.Ttl.Minutes()*60) {
return nil
}
nv, ok := scanner.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 := scanner.nm.Put(n.Id, Offset(scanner.newOffset/NeedlePaddingSize), n.Size); err != nil {
return fmt.Errorf("cannot put needle: %s", err)
}
if _, _, _, err := n.Append(scanner.dst, scanner.v.Version()); err != nil {
return fmt.Errorf("cannot append needle: %s", err)
}
scanner.newOffset += n.DiskSize(scanner.version)
glog.V(4).Infoln("saving key", n.Id, "volume offset", offset, "=>", scanner.newOffset, "data_size", n.Size)
}
return nil
}
func (v *Volume) copyDataAndGenerateIndexFile(dstName, idxName string, preallocate int64) (err error) {
var (
dst, idx *os.File
@ -248,38 +288,13 @@ func (v *Volume) copyDataAndGenerateIndexFile(dstName, idxName string, prealloca
}
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
})