def sync_data(self):
"""
Synchronize data from the given base image to the target root
directory.
"""
if not self.unknown_uri:
compressor = Compress(self.image_file)
if compressor.get_format():
compressor.uncompress(True)
self.uncompressed_image = compressor.uncompressed_filename
else:
self.uncompressed_image = self.image_file
image_uri = '{0}:{1}'.format(
self.archive_transport, self.uncompressed_image
)
else:
log.warning('Bypassing base image URI to OCI tools')
image_uri = self.unknown_uri
oci = OCI()
oci.import_container_image(image_uri)
oci.unpack()
oci.import_rootfs(self.root_dir)
# A copy of the uncompressed image and its checksum are
# kept inside the root_dir in order to ensure the later steps
# i.e. system create are atomic and don't need any third
# party archive.
image_copy = Defaults.get_imported_root_image(self.root_dir)
Path.create(os.path.dirname(image_copy))
oci.export_container_image(
image_copy, 'oci-archive', Defaults.get_container_base_image_tag()
)
self._make_checksum(image_copy)
def create(self, filename, base_image):
"""
Create compressed oci system container tar archive
:param string filename: archive file name
:param string base_image: archive used as a base image
"""
exclude_list = Defaults.get_exclude_list_for_root_data_sync()
exclude_list.append('boot')
exclude_list.append('dev')
exclude_list.append('sys')
exclude_list.append('proc')
oci = OCI()
if base_image:
oci.import_container_image(
'oci-archive:{0}:{1}'.format(
base_image, Defaults.get_container_base_image_tag()
)
)
else:
oci.init_container()
image_ref = '{0}:{1}'.format(
self.oci_config['container_name'], self.oci_config['container_tag']
)
oci.unpack()
oci.sync_rootfs(self.root_dir, exclude_list)
oci.repack(self.oci_config)
oci.set_config(self.oci_config)
oci.post_process()
if self.archive_transport == 'docker-archive':
image_ref = '{0}:{1}'.format(
self.oci_config['container_name'],
self.oci_config['container_tag']
)
additional_refs = []
if 'additional_tags' in self.oci_config:
additional_refs = []
for tag in self.oci_config['additional_tags']:
additional_refs.append('{0}:{1}'.format(
self.oci_config['container_name'], tag
))
else:
image_ref = self.oci_config['container_tag']
additional_refs = []
oci.export_container_image(
filename, self.archive_transport, image_ref, additional_refs
)
if self.runtime_config.get_container_compression():
compressor = Compress(filename)
return compressor.xz(self.runtime_config.get_xz_options())
else:
return filename