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add grpc ec shard read

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This commit is contained in:
Chris Lu
2019-05-27 11:59:03 -07:00
parent a4f3d82c57
commit b4b407e403
12 changed files with 418 additions and 168 deletions
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16
weed/storage/needle/needle_read_write.go
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@@ -170,11 +170,8 @@ func ReadNeedleBlob(r *os.File, offset int64, size uint32, version Version) (dat
return dataSlice, err
}
func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version) (err error) {
bytes, err := ReadNeedleBlob(r, offset, size, version)
if err != nil {
return err
}
// ReadBytes hydrates the needle from the bytes buffer, with only n.Id is set.
func (n *Needle) ReadBytes(bytes []byte, offset int64, size uint32, version Version) (err error) {
n.ParseNeedleHeader(bytes)
if n.Size != size {
return fmt.Errorf("File Entry Not Found. offset %d, Needle id %d expected size %d Memory %d", offset, n.Id, n.Size, size)
@@ -203,6 +200,15 @@ func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version
return nil
}
// ReadData hydrates the needle from the file, with only n.Id is set.
func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version) (err error) {
bytes, err := ReadNeedleBlob(r, offset, size, version)
if err != nil {
return err
}
return n.ReadBytes(bytes, offset, size, version)
}
func (n *Needle) ParseNeedleHeader(bytes []byte) {
n.Cookie = BytesToCookie(bytes[0:CookieSize])
n.Id = BytesToNeedleId(bytes[CookieSize : CookieSize+NeedleIdSize])