class CompressedReader(GenericReader):
def __init__(self, path, compressor_level):
GenericReader.__init__(self, path)
self.compressor = Compressor(compressor_level)
def next(self):
self.open()
if not self._check_fd():
header = self._fd.read(self.compressor.get_header_size())
if not len(header):
self.close()
raise StopIteration
size = self.compressor.read_block_header(header)
cdata = self._fd.read(size)
data = self.compressor.extract(cdata)
return data
class CompressedReader(GenericReader):
def __init__(self, image_path, pattern, volumes, compressor_level,
notify_status):
GenericReader.__init__(self, image_path, pattern, volumes,
notify_status)
self.compressor = Compressor(compressor_level)
def read_block(self):
header_size = self.compressor.get_header_size()
if not self._check_fd():
header = self._fd.read(header_size)
if not len(header):
self.close()
if self.current_volume < self.volumes:
self.current_volume += 1
self.open()
data = self.read_block()
return data
else:
return None
size = self.compressor.read_block_header(header)
data = self._fd.read(size)
return data
class CompressedReader(GenericReader):
def __init__(self, image_path, pattern, volumes,
compressor_level, notify_status):
GenericReader.__init__(self, image_path, pattern,
volumes, notify_status)
self.compressor = Compressor(compressor_level)
def read_block(self):
header_size = self.compressor.get_header_size()
if not self._check_fd():
header = self._fd.read(header_size)
if not len(header):
self.close()
if self.current_volume < self.volumes:
self.current_volume += 1
self.open()
data = self.read_block()
return data
else:
return None
size = self.compressor.read_block_header(header)
data = self._fd.read(size)
return data
def restore_image(self):
""" """
information = Information(self.image_path)
information.load()
image_name = information.get_image_name()
compressor_level = information.get_image_compressor_level()
total_bytes = information.get_image_total_bytes()
total_blocks = long(math.ceil(total_bytes / float(BLOCK_SIZE)))
compressor = Compressor(compressor_level)
device = Device(self.target_device)
if device.is_disk() != \
information.get_image_is_disk():
raise ErrorRestoringImage("Invalid target dispositive")
try:
disk = Disk(device)
except _ped.DiskLabelException:
try:
device.fix_disk_label()
disk = Disk(device)
except:
raise ErrorRestoringImage("Unrecognized disk label")
if information.get_image_is_disk():
mbr = Mbr(self.image_path)
mbr.restore_from_file(self.target_device)
dlm = DiskLayoutManager(self.image_path)
dlm.restore_from_file(disk)
self._print_informations(total_bytes, image_name)
progress = Progress(total_blocks)
progress.start()
partitions = information.get_partitions()
for p in partitions:
if information.get_image_is_disk():
partition = disk.get_partition_by_number(p.number, p.type)
else:
parent_path = get_parent_path(self.target_device)
parent_device = Device(parent_path)
parent_disk = Disk(parent_device)
partition = parent_disk.get_partition_by_path(
self.target_device, p.type)
if partition is None:
raise ErrorRestoringImage("No valid partitions found")
if p.uuid is not None:
partition.filesystem.open_to_write(p.uuid)
else:
partition.filesystem.open_to_write()
if partition.filesystem.is_swap():
continue
file_name = FILE_PATTERN % (image_name, p.number)
with open(self.image_path + file_name, 'rb') as f:
# TODO: Work with parallelism
while True: # Ugly
header = f.read(compressor.get_header_size())
if not len(header):
break
size = compressor.read_block_header(header)
cdata = f.read(size)
data = compressor.extract(cdata)
partition.filesystem.write(data)
progress.increment(1)
partition.filesystem.close()
progress.stop()
print "completed."
def restore_image(self):
""" """
information = Information(self.image_path)
information.load()
image_name = information.get_image_name()
compressor_level = information.get_image_compressor_level()
total_bytes = information.get_image_total_bytes()
total_blocks = long(math.ceil(total_bytes/float(BLOCK_SIZE)))
compressor = Compressor(compressor_level)
device = Device(self.target_device)
if device.is_disk() != \
information.get_image_is_disk():
raise ErrorRestoringImage("Invalid target dispositive")
try:
disk = Disk(device)
except _ped.DiskLabelException:
try:
device.fix_disk_label()
disk = Disk(device)
except:
raise ErrorRestoringImage("Unrecognized disk label")
if information.get_image_is_disk():
mbr = Mbr(self.image_path)
mbr.restore_from_file(self.target_device)
dlm = DiskLayoutManager(self.image_path)
dlm.restore_from_file(disk)
self._print_informations(total_bytes, image_name)
progress = Progress(total_blocks)
progress.start()
partitions = information.get_partitions()
for p in partitions:
if information.get_image_is_disk():
partition = disk.get_partition_by_number(p.number, p.type)
else:
parent_path = get_parent_path(self.target_device)
parent_device = Device(parent_path)
parent_disk = Disk(parent_device)
partition = parent_disk.get_partition_by_path(
self.target_device,
p.type)
if partition is None:
raise ErrorRestoringImage("No valid partitions found")
if p.uuid is not None:
partition.filesystem.open_to_write(p.uuid)
else:
partition.filesystem.open_to_write()
if partition.filesystem.is_swap():
continue
file_name = FILE_PATTERN % (image_name, p.number)
with open(self.image_path + file_name, 'rb') as f:
# TODO: Work with parallelism
while True: # Ugly
header = f.read(compressor.get_header_size())
if not len(header):
break
size = compressor.read_block_header(header)
cdata = f.read(size)
data = compressor.extract(cdata)
partition.filesystem.write(data)
progress.increment(1)
partition.filesystem.close()
progress.stop()
print "completed."