def get(self, location):
"""
Takes a `glance.store.location.Location` object that indicates
where to find the image file, and returns a generator for reading
the image file
:param location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
:raises `glance.exception.NotFound` if image does not exist
"""
loc = location.store_location
swift_conn = self._make_swift_connection(
auth_url=loc.swift_auth_url, user=loc.user, key=loc.key)
try:
(resp_headers, resp_body) = swift_conn.get_object(
container=loc.container, obj=loc.obj,
resp_chunk_size=self.CHUNKSIZE)
except swift_client.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
def get(self, location):
"""
Takes a `glance.store.location.Location` object that indicates
where to find the image file, and returns a tuple of generator
(for reading the image file) and image_size
:param location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
:raises `glance.exception.NotFound` if image does not exist
"""
loc = location.store_location
swift_conn = self._swift_connection_for_location(loc)
try:
(resp_headers,
resp_body) = swift_conn.get_object(container=loc.container,
obj=loc.obj,
resp_chunk_size=self.CHUNKSIZE)
except swiftclient.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(
_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
def delete(cls, location):
"""
Takes a `glance.store.location.Location` object that indicates
where to find the image file to delete
:location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
"""
from swift.common import client as swift_client
# TODO(sirp): snet=False for now, however, if the instance of
# swift we're talking to is within our same region, we should set
# snet=True
loc = location.store_location
swift_conn = swift_client.Connection(
authurl=loc.swift_auth_url, user=loc.user, key=loc.key, snet=False)
try:
swift_conn.delete_object(loc.container, loc.obj)
except swift_client.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound("Swift could not find image at "
"uri %(uri)s" % locals())
else:
raise
def get(cls, location, expected_size=None, options=None):
"""
Takes a `glance.store.location.Location` object that indicates
where to find the image file, and returns a generator from Swift
provided by Swift client's get_object() method.
:location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
"""
from swift.common import client as swift_client
# TODO(sirp): snet=False for now, however, if the instance of
# swift we're talking to is within our same region, we should set
# snet=True
loc = location.store_location
swift_conn = swift_client.Connection(
authurl=loc.swift_auth_url, user=loc.user, key=loc.key, snet=False)
try:
(resp_headers, resp_body) = swift_conn.get_object(
container=loc.container, obj=loc.obj,
resp_chunk_size=cls.CHUNKSIZE)
except swift_client.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound("Swift could not find image at "
"uri %(uri)s" % locals())
else:
raise
def set_acls(self,
location,
public=False,
read_tenants=[],
write_tenants=[]):
"""
Sets the read and write access control list for an image in the
backend store.
:location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
:public A boolean indicating whether the image should be public.
:read_tenants A list of tenant strings which should be granted
read access for an image.
:write_tenants A list of tenant strings which should be granted
write access for an image.
"""
if self.multi_tenant:
loc = location.store_location
swift_conn = self._swift_connection_for_location(loc)
headers = {}
if public:
headers['X-Container-Read'] = ".r:*"
elif read_tenants:
headers['X-Container-Read'] = ','.join(read_tenants)
else:
headers['X-Container-Read'] = ''
write_tenants.extend(self.admin_tenants)
if write_tenants:
headers['X-Container-Write'] = ','.join(write_tenants)
else:
headers['X-Container-Write'] = ''
try:
swift_conn.post_container(loc.container, headers=headers)
except swiftclient.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(
_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
def set_acls(self, location, public=False, read_tenants=[],
write_tenants=[]):
"""
Sets the read and write access control list for an image in the
backend store.
:location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
:public A boolean indicating whether the image should be public.
:read_tenants A list of tenant strings which should be granted
read access for an image.
:write_tenants A list of tenant strings which should be granted
write access for an image.
"""
if self.multi_tenant:
loc = location.store_location
swift_conn = self._swift_connection_for_location(loc)
headers = {}
if public:
headers['X-Container-Read'] = ".r:*"
elif read_tenants:
headers['X-Container-Read'] = ','.join(read_tenants)
else:
headers['X-Container-Read'] = ''
write_tenants.extend(self.admin_tenants)
if write_tenants:
headers['X-Container-Write'] = ','.join(write_tenants)
else:
headers['X-Container-Write'] = ''
try:
swift_conn.post_container(loc.container, headers=headers)
except swiftclient.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
def delete(self, location):
"""
Takes a `glance.store.location.Location` object that indicates
where to find the image file to delete
:location `glance.store.location.Location` object, supplied
from glance.store.location.get_location_from_uri()
:raises NotFound if image does not exist
"""
loc = location.store_location
swift_conn = self._make_swift_connection(
auth_url=loc.swift_auth_url, user=loc.user, key=loc.key)
try:
swift_conn.delete_object(loc.container, loc.obj)
except swift_client.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
# since we're simply sending off parallelizable requests
# to Swift to delete stuff. It's not like we're going to
# be hogging up network or file I/O here...
swift_conn.delete_object(obj_container, segment['name'])
else:
swift_conn.delete_object(loc.container, loc.obj)
if self.multi_tenant:
#NOTE: In multi-tenant mode containers are specific to
# each object (Glance image)
swift_conn.delete_container(loc.container)
except swiftclient.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(
_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
def set_acls(self,
location,
public=False,
read_tenants=[],
write_tenants=[]):
"""
Sets the read and write access control list for an image in the
backend store.
# Delete all the chunks before the object manifest itself
obj_container, obj_prefix = manifest.split('/', 1)
for segment in swift_conn.get_container(obj_container,
prefix=obj_prefix)[1]:
# TODO(jaypipes): This would be an easy area to parallelize
# since we're simply sending off parallelizable requests
# to Swift to delete stuff. It's not like we're going to
# be hogging up network or file I/O here...
swift_conn.delete_object(obj_container, segment['name'])
else:
swift_conn.delete_object(loc.container, loc.obj)
except swift_client.ClientException, e:
if e.http_status == httplib.NOT_FOUND:
uri = location.get_store_uri()
raise exception.NotFound(_("Swift could not find image at "
"uri %(uri)s") % locals())
else:
raise
class ChunkReader(object):
def __init__(self, fd, checksum, total):
self.fd = fd
self.checksum = checksum
self.total = total
self.bytes_read = 0
def read(self, i):
left = self.total - self.bytes_read
