func (r *fileReader) Read(data []byte) (int, error) {
if r.reader == nil {
if r.index == len(r.blockRefs) {
return 0, io.EOF
}
blockRef := r.blockRefs[r.index]
for r.offset != 0 && r.offset > int64(drive.ByteRangeSize(blockRef.Range)) {
r.index++
r.offset -= int64(drive.ByteRangeSize(blockRef.Range))
}
var err error
r.reader, err = pfsutil.GetBlock(r.driveClient,
r.blockRefs[r.index].Block.Hash, uint64(r.offset), uint64(r.size))
if err != nil {
return 0, err
}
r.offset = 0
r.index++
}
size, err := r.reader.Read(data)
if err != nil && err != io.EOF {
return size, err
}
if err == io.EOF {
r.reader = nil
}
r.size -= int64(size)
if r.size == 0 {
return size, io.EOF
}
return size, nil
}
func (r *fileReader) Read(data []byte) (int, error) {
log.Printf("newFileReader.Read r: %+v\n", r)
defer log.Printf("newFileReader.Read return")
if r.reader == nil {
log.Printf("reader == nil")
if r.index == len(r.blockRefs) {
return 0, io.EOF
}
blockRef := r.blockRefs[r.index]
for r.offset != 0 && r.offset > int64(drive.ByteRangeSize(blockRef.Range)) {
log.Printf("r.index++")
r.index++
r.offset -= int64(drive.ByteRangeSize(blockRef.Range))
}
var err error
r.reader, err = r.getBlock(r.blockRefs[r.index].Block.Hash, uint64(r.offset))
if err != nil {
return 0, err
}
r.offset = 0
r.index++
}
if int(r.size) < len(data) {
data = data[:r.size]
}
log.Printf("reading")
size, err := r.reader.Read(data)
log.Printf("done reading")
if err != nil && err != io.EOF {
return size, err
}
if err == io.EOF {
r.reader = nil
}
r.size -= int64(size)
if r.size == 0 {
return size, io.EOF
}
return size, nil
}