func getObject(objSrv objectserver.ObjectServer, hashVal hash.Hash,
baseOutputFilename string) error {
hashes := make([]hash.Hash, 1)
hashes[0] = hashVal
objectsReader, err := objSrv.GetObjects(hashes)
if err != nil {
return err
}
size, reader, err := objectsReader.NextObject()
if err != nil {
return err
}
defer reader.Close()
filename := fmt.Sprintf("%s.%x", baseOutputFilename, hashVal)
file, err := os.Create(filename)
if err != nil {
return err
}
defer file.Close()
ncopied, err := io.CopyN(file, reader, int64(size))
if err != nil {
return err
}
if uint64(ncopied) != size {
return errors.New(fmt.Sprintf("copied: %d, wanted: %d", ncopied, size))
}
return nil
}
func getObject(objSrv objectserver.ObjectServer, hashVal hash.Hash,
baseOutputFilename string) error {
hashes := make([]hash.Hash, 1)
hashes[0] = hashVal
objectsReader, err := objSrv.GetObjects(hashes)
if err != nil {
return err
}
size, reader, err := objectsReader.NextObject()
if err != nil {
return err
}
defer reader.Close()
filename := fmt.Sprintf("%s.%x", baseOutputFilename, hashVal)
return fsutil.CopyToFile(filename, reader, int64(size))
}
func getObjects(objSrv objectserver.ObjectServer,
hashesFilename, outputDirectory string) error {
hashesFile, err := os.Open(hashesFilename)
if err != nil {
return err
}
defer hashesFile.Close()
scanner := bufio.NewScanner(hashesFile)
var hashes []hash.Hash
for scanner.Scan() {
hashval, err := objectcache.FilenameToHash(scanner.Text())
if err != nil {
return err
}
hashes = append(hashes, hashval)
}
if err := scanner.Err(); err != nil {
return err
}
objectsReader, err := objSrv.GetObjects(hashes)
if err != nil {
return err
}
defer objectsReader.Close()
tmpDirname := outputDirectory + "~"
if err := os.Mkdir(tmpDirname, syscall.S_IRWXU); err != nil {
return err
}
defer os.RemoveAll(tmpDirname)
for _, hash := range hashes {
length, reader, err := objectsReader.NextObject()
if err != nil {
return err
}
err = readOne(tmpDirname, hash, length, reader)
reader.Close()
if err != nil {
return err
}
}
return os.Rename(tmpDirname, outputDirectory)
}