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Diffstat (limited to 'go/storage/needle_read_write.go')
-rw-r--r--go/storage/needle_read_write.go291
1 files changed, 0 insertions, 291 deletions
diff --git a/go/storage/needle_read_write.go b/go/storage/needle_read_write.go
deleted file mode 100644
index fcca2469c..000000000
--- a/go/storage/needle_read_write.go
+++ /dev/null
@@ -1,291 +0,0 @@
-package storage
-
-import (
- "errors"
- "fmt"
- "io"
- "os"
-
- "github.com/chrislusf/seaweedfs/go/glog"
- "github.com/chrislusf/seaweedfs/go/util"
-)
-
-const (
- FlagGzip = 0x01
- FlagHasName = 0x02
- FlagHasMime = 0x04
- FlagHasLastModifiedDate = 0x08
- FlagHasTtl = 0x10
- FlagIsChunkManifest = 0x80
- LastModifiedBytesLength = 5
- TtlBytesLength = 2
-)
-
-func (n *Needle) DiskSize() int64 {
- padding := NeedlePaddingSize - ((NeedleHeaderSize + int64(n.Size) + NeedleChecksumSize) % NeedlePaddingSize)
- return NeedleHeaderSize + int64(n.Size) + padding + NeedleChecksumSize
-}
-func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
- if s, ok := w.(io.Seeker); ok {
- if end, e := s.Seek(0, 1); e == nil {
- defer func(s io.Seeker, off int64) {
- if err != nil {
- if _, e = s.Seek(off, 0); e != nil {
- glog.V(0).Infof("Failed to seek %s back to %d with error: %v", w, off, e)
- }
- }
- }(s, end)
- } else {
- err = fmt.Errorf("Cannot Read Current Volume Position: %v", e)
- return
- }
- }
- switch version {
- case Version1:
- header := make([]byte, NeedleHeaderSize)
- util.Uint32toBytes(header[0:4], n.Cookie)
- util.Uint64toBytes(header[4:12], n.Id)
- n.Size = uint32(len(n.Data))
- size = n.Size
- util.Uint32toBytes(header[12:16], n.Size)
- if _, err = w.Write(header); err != nil {
- return
- }
- if _, err = w.Write(n.Data); err != nil {
- return
- }
- padding := NeedlePaddingSize - ((NeedleHeaderSize + n.Size + NeedleChecksumSize) % NeedlePaddingSize)
- util.Uint32toBytes(header[0:NeedleChecksumSize], n.Checksum.Value())
- _, err = w.Write(header[0 : NeedleChecksumSize+padding])
- return
- case Version2:
- header := make([]byte, NeedleHeaderSize)
- util.Uint32toBytes(header[0:4], n.Cookie)
- util.Uint64toBytes(header[4:12], n.Id)
- n.DataSize, n.NameSize, n.MimeSize = uint32(len(n.Data)), uint8(len(n.Name)), uint8(len(n.Mime))
- if n.DataSize > 0 {
- n.Size = 4 + n.DataSize + 1
- if n.HasName() {
- n.Size = n.Size + 1 + uint32(n.NameSize)
- }
- if n.HasMime() {
- n.Size = n.Size + 1 + uint32(n.MimeSize)
- }
- if n.HasLastModifiedDate() {
- n.Size = n.Size + LastModifiedBytesLength
- }
- if n.HasTtl() {
- n.Size = n.Size + TtlBytesLength
- }
- } else {
- n.Size = 0
- }
- size = n.DataSize
- util.Uint32toBytes(header[12:16], n.Size)
- if _, err = w.Write(header); err != nil {
- return
- }
- if n.DataSize > 0 {
- util.Uint32toBytes(header[0:4], n.DataSize)
- if _, err = w.Write(header[0:4]); err != nil {
- return
- }
- if _, err = w.Write(n.Data); err != nil {
- return
- }
- util.Uint8toBytes(header[0:1], n.Flags)
- if _, err = w.Write(header[0:1]); err != nil {
- return
- }
- if n.HasName() {
- util.Uint8toBytes(header[0:1], n.NameSize)
- if _, err = w.Write(header[0:1]); err != nil {
- return
- }
- if _, err = w.Write(n.Name); err != nil {
- return
- }
- }
- if n.HasMime() {
- util.Uint8toBytes(header[0:1], n.MimeSize)
- if _, err = w.Write(header[0:1]); err != nil {
- return
- }
- if _, err = w.Write(n.Mime); err != nil {
- return
- }
- }
- if n.HasLastModifiedDate() {
- util.Uint64toBytes(header[0:8], n.LastModified)
- if _, err = w.Write(header[8-LastModifiedBytesLength : 8]); err != nil {
- return
- }
- }
- if n.HasTtl() && n.Ttl != nil {
- n.Ttl.ToBytes(header[0:TtlBytesLength])
- if _, err = w.Write(header[0:TtlBytesLength]); err != nil {
- return
- }
- }
- }
- padding := NeedlePaddingSize - ((NeedleHeaderSize + n.Size + NeedleChecksumSize) % NeedlePaddingSize)
- util.Uint32toBytes(header[0:NeedleChecksumSize], n.Checksum.Value())
- _, err = w.Write(header[0 : NeedleChecksumSize+padding])
- return n.DataSize, err
- }
- return 0, fmt.Errorf("Unsupported Version! (%d)", version)
-}
-
-func ReadNeedleBlob(r *os.File, offset int64, size uint32) (dataSlice []byte, block *Block, err error) {
- padding := NeedlePaddingSize - ((NeedleHeaderSize + size + NeedleChecksumSize) % NeedlePaddingSize)
- readSize := NeedleHeaderSize + size + NeedleChecksumSize + padding
- return getBytesForFileBlock(r, offset, int(readSize))
-}
-
-func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version) (err error) {
- bytes, block, err := ReadNeedleBlob(r, offset, size)
- if err != nil {
- return err
- }
- n.rawBlock = block
- n.ParseNeedleHeader(bytes)
- if n.Size != size {
- return fmt.Errorf("File Entry Not Found. Needle %d Memory %d", n.Size, size)
- }
- switch version {
- case Version1:
- n.Data = bytes[NeedleHeaderSize : NeedleHeaderSize+size]
- case Version2:
- n.readNeedleDataVersion2(bytes[NeedleHeaderSize : NeedleHeaderSize+int(n.Size)])
- }
- checksum := util.BytesToUint32(bytes[NeedleHeaderSize+size : NeedleHeaderSize+size+NeedleChecksumSize])
- newChecksum := NewCRC(n.Data)
- if checksum != newChecksum.Value() {
- return errors.New("CRC error! Data On Disk Corrupted")
- }
- n.Checksum = newChecksum
- return nil
-}
-func (n *Needle) ParseNeedleHeader(bytes []byte) {
- n.Cookie = util.BytesToUint32(bytes[0:4])
- n.Id = util.BytesToUint64(bytes[4:12])
- n.Size = util.BytesToUint32(bytes[12:NeedleHeaderSize])
-}
-func (n *Needle) readNeedleDataVersion2(bytes []byte) {
- index, lenBytes := 0, len(bytes)
- if index < lenBytes {
- n.DataSize = util.BytesToUint32(bytes[index : index+4])
- index = index + 4
- if int(n.DataSize)+index > lenBytes {
- // this if clause is due to bug #87 and #93, fixed in v0.69
- // remove this clause later
- return
- }
- n.Data = bytes[index : index+int(n.DataSize)]
- index = index + int(n.DataSize)
- n.Flags = bytes[index]
- index = index + 1
- }
- if index < lenBytes && n.HasName() {
- n.NameSize = uint8(bytes[index])
- index = index + 1
- n.Name = bytes[index : index+int(n.NameSize)]
- index = index + int(n.NameSize)
- }
- if index < lenBytes && n.HasMime() {
- n.MimeSize = uint8(bytes[index])
- index = index + 1
- n.Mime = bytes[index : index+int(n.MimeSize)]
- index = index + int(n.MimeSize)
- }
- if index < lenBytes && n.HasLastModifiedDate() {
- n.LastModified = util.BytesToUint64(bytes[index : index+LastModifiedBytesLength])
- index = index + LastModifiedBytesLength
- }
- if index < lenBytes && n.HasTtl() {
- n.Ttl = LoadTTLFromBytes(bytes[index : index+TtlBytesLength])
- index = index + TtlBytesLength
- }
-}
-
-func ReadNeedleHeader(r *os.File, version Version, offset int64) (n *Needle, bodyLength uint32, err error) {
- n = new(Needle)
- if version == Version1 || version == Version2 {
- bytes := make([]byte, NeedleHeaderSize)
- var count int
- count, err = r.ReadAt(bytes, offset)
- if count <= 0 || err != nil {
- return nil, 0, err
- }
- n.ParseNeedleHeader(bytes)
- padding := NeedlePaddingSize - ((n.Size + NeedleHeaderSize + NeedleChecksumSize) % NeedlePaddingSize)
- bodyLength = n.Size + NeedleChecksumSize + padding
- }
- return
-}
-
-//n should be a needle already read the header
-//the input stream will read until next file entry
-func (n *Needle) ReadNeedleBody(r *os.File, version Version, offset int64, bodyLength uint32) (err error) {
- if bodyLength <= 0 {
- return nil
- }
- switch version {
- case Version1:
- bytes := make([]byte, bodyLength)
- if _, err = r.ReadAt(bytes, offset); err != nil {
- return
- }
- n.Data = bytes[:n.Size]
- n.Checksum = NewCRC(n.Data)
- case Version2:
- bytes := make([]byte, bodyLength)
- if _, err = r.ReadAt(bytes, offset); err != nil {
- return
- }
- n.readNeedleDataVersion2(bytes[0:n.Size])
- n.Checksum = NewCRC(n.Data)
- default:
- err = fmt.Errorf("Unsupported Version! (%d)", version)
- }
- return
-}
-
-func (n *Needle) IsGzipped() bool {
- return n.Flags&FlagGzip > 0
-}
-func (n *Needle) SetGzipped() {
- n.Flags = n.Flags | FlagGzip
-}
-func (n *Needle) HasName() bool {
- return n.Flags&FlagHasName > 0
-}
-func (n *Needle) SetHasName() {
- n.Flags = n.Flags | FlagHasName
-}
-func (n *Needle) HasMime() bool {
- return n.Flags&FlagHasMime > 0
-}
-func (n *Needle) SetHasMime() {
- n.Flags = n.Flags | FlagHasMime
-}
-func (n *Needle) HasLastModifiedDate() bool {
- return n.Flags&FlagHasLastModifiedDate > 0
-}
-func (n *Needle) SetHasLastModifiedDate() {
- n.Flags = n.Flags | FlagHasLastModifiedDate
-}
-func (n *Needle) HasTtl() bool {
- return n.Flags&FlagHasTtl > 0
-}
-func (n *Needle) SetHasTtl() {
- n.Flags = n.Flags | FlagHasTtl
-}
-
-func (n *Needle) IsChunkedManifest() bool {
- return n.Flags&FlagIsChunkManifest > 0
-}
-
-func (n *Needle) SetIsChunkManifest() {
- n.Flags = n.Flags | FlagIsChunkManifest
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-24 11:15:42 +0000