def parse_image_ref(image_href):
"""Parse an image href into composite parts.
:param image_href: href of an image
:returns: a tuple of the form (image_id, host, port)
:raises ValueError
"""
if '/' not in str(image_href):
image_id = image_href
(glance_host, glance_port, use_ssl) = _get_api_server()
return (image_id, glance_host, glance_port, use_ssl)
else:
try:
url = urlparse.urlparse(image_href)
if url.scheme == 'glance':
(glance_host, glance_port, use_ssl) = _get_api_server()
image_id = image_href.split('/')[-1]
else:
glance_port = url.port or 80
glance_host = url.netloc.split(':', 1)[0]
image_id = url.path.split('/')[-1]
use_ssl = (url.scheme == 'https')
return (image_id, glance_host, glance_port, use_ssl)
except ValueError:
raise exception.InvalidImageRef(image_href=image_href)
def parse_image_ref(image_href):
"""Parse an image href.
:param image_href: href of an image
:returns: a tuple (image ID, glance URL, whether to use SSL)
:raises ValueError: when input image href is invalid
"""
if '/' not in six.text_type(image_href):
endpoint = _get_api_server()
return (image_href, endpoint, endpoint.startswith('https'))
else:
try:
url = urlparse.urlparse(image_href)
if url.scheme == 'glance':
endpoint = _get_api_server()
image_id = image_href.split('/')[-1]
return (image_id, endpoint, endpoint.startswith('https'))
else:
glance_port = url.port or 80
glance_host = url.netloc.split(':', 1)[0]
image_id = url.path.split('/')[-1]
use_ssl = (url.scheme == 'https')
endpoint = '%s://%s:%s' % (url.scheme, glance_host,
glance_port)
return (image_id, endpoint, use_ssl)
except ValueError:
raise exception.InvalidImageRef(image_href=image_href)
def parse_image_id(image_href):
"""Parse an image id from image href.
:param image_href: href of an image
:returns: image id parsed from image_href
:raises InvalidImageRef: when input image href is invalid
"""
image_href = str(image_href)
if uuidutils.is_uuid_like(image_href):
image_id = image_href
elif image_href.startswith('glance://'):
image_id = image_href.split('/')[-1]
if not uuidutils.is_uuid_like(image_id):
raise exception.InvalidImageRef(image_href=image_href)
else:
raise exception.InvalidImageRef(image_href=image_href)
return image_id
def get_glance_api_server(image_href):
"""Construct a glance API url from config options
Returns a random server from the CONF.glance.glance_api_servers list
of servers.
:param image_href: href of an image
:returns: glance API URL
:raises InvalidImageRef: when input image href is invalid
"""
image_href = six.text_type(image_href)
if not is_glance_image(image_href):
raise exception.InvalidImageRef(image_href=image_href)
global _GLANCE_API_SERVER
if not _GLANCE_API_SERVER:
_GLANCE_API_SERVER = itertools.cycle(
random.sample(CONF.glance.glance_api_servers,
len(CONF.glance.glance_api_servers)))
return six.next(_GLANCE_API_SERVER)
