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Files
atomic/Atomic/pull.py
2016-09-22 15:14:56 +00:00

58 lines
2.4 KiB
Python

try:
from . import Atomic
except ImportError:
from atomic import Atomic # pylint: disable=relative-import
from .trust import Trust
from .util import skopeo_copy, get_atomic_config, skopeo_inspect,\
decompose, write_out, strip_port, is_insecure_registry
ATOMIC_CONFIG = get_atomic_config()
def cli(subparser):
# atomic pull
backend = ATOMIC_CONFIG.get('default_storage', "docker")
pullp = subparser.add_parser("pull", help=_("pull latest image from a repository"),
epilog="pull the latest specified image from a repository.")
pullp.set_defaults(_class=Pull, func='pull_image')
pullp.add_argument("--storage", dest="backend", default=backend,
help=_("Specify the storage. Default is currently '%s'. You can"
" change the default by editing /etc/atomic.conf and changing"
" the 'default_storage' field." % backend))
pullp.add_argument("-t", "--type", dest="reg_type", default=None,
help=_("Pull from an alternative registry type."))
pullp.add_argument("image", help=_("image id"))
class Pull(Atomic):
def pull_docker_image(self):
self.ping()
_, _, tag = decompose(self.args.image)
# If no tag is given, we assume "latest"
tag = tag if tag != "" else "latest"
if self.args.reg_type == "atomic":
pull_uri = 'atomic:'
else:
pull_uri = 'docker://'
fq_name = skopeo_inspect("{}{}".format(pull_uri, self.args.image))['Name']
registry, _, _ = decompose(fq_name)
image = "docker-daemon:{}:{}".format(fq_name, tag)
insecure = True if is_insecure_registry(self.d.info()['RegistryConfig'], strip_port(registry)) else False
trust = Trust()
trust.set_args(self.args)
trust.discover_sigstore(fq_name)
skopeo_copy("docker://{}".format(self.args.image), image, debug=self.args.debug, insecure=insecure)
def pull_image(self):
handlers = {
"ostree" : self.syscontainers.pull_image,
"docker" : self.pull_docker_image
}
handler = handlers.get(self.args.backend)
if handler is None:
raise ValueError("Destination not known, please choose --storage=%s" % "|".join(handlers.keys()))
write_out("Image %s is being pulled to %s ..." % (self.args.image, self.args.backend))
handler()