def download(self, context, image_id, data=None):
"""Calls out to Glance for data and writes data."""
if CONF.allowed_direct_url_schemes:
direct_url, locations = self.get_location(context, image_id)
if locations is None:
locations = []
if direct_url:
locations.append({'url': direct_url, 'metadata': {}})
for entry in locations:
loc_url = entry['url']
loc_meta = entry['metadata']
o = urlparse.urlparse(loc_url)
if o.scheme in CONF.allowed_direct_url_schemes:
if o.scheme == "file":
with open(o.path, "r") as f:
# a system call to cp could have significant performance
# advantages, however we do not have the path to files at
# this point in the abstraction.
shutil.copyfileobj(f, data)
return
elif o.scheme in ["uds", "uds+https"]:
try:
xfer_mod = uds_download.get_download_handler()
if data:
path = data.name
image_chunks = xfer_mod.download(
context, o, path, loc_meta)
msg = _("Successfully transferred "
"using %s") % o.scheme
LOG.info(msg)
return
except Exception as ex:
LOG.exception(ex)
elif o.scheme in ["swift", "swift+https"]:
try:
xfer_mod = swift_download.get_download_handler()
if data:
path = data.name
xfer_mod.download(context, o, path, loc_meta)
msg = _("Successfully transferred "
"using %s") % o.scheme
LOG.info(msg)
return
except Exception as ex:
LOG.exception(ex)
try:
image_chunks = self._client.call(context, 'data', image_id)
except Exception:
_reraise_translated_image_exception(image_id)
if not data:
return image_chunks
else:
path = data.name
direct_io.write(path, image_chunks)
def download(self, context, url_parts, dst_path, *args, **kwargs):
if not self.glance_is_local():
raise cinder_exception.CinderException("Cannot use direct_url to"
" download, cause glance is not as this az.")
try:
connection = self.get_connection(url_parts)
resp_headers, resp_body = connection.get_object(
container=self.container, obj=self.obj,
resp_chunk_size=self.CHUNKSIZE)
except:
LOG.exception("Fail to download image by direct_url.")
raise
direct_io.write(dst_path, resp_body)
def download(self, context, url_parts, dst_path, *args, **kwargs):
if not self.glance_is_local():
raise cinder_exception.CinderException(
"Cannot use direct_url to"
" download, cause glance is not as this az.")
try:
connection = self.get_connection(url_parts)
resp_headers, resp_body = connection.get_object(
container=self.container,
obj=self.obj,
resp_chunk_size=self.CHUNKSIZE)
except:
LOG.exception("Fail to download image by direct_url.")
raise
direct_io.write(dst_path, resp_body)
def download(self, context, image_id, data=None):
"""Calls out to Glance for data and writes data."""
if CONF.allowed_direct_url_schemes:
direct_url, locations = self.get_location(context, image_id)
if locations is None:
locations = []
if direct_url:
locations.append({'url': direct_url, 'metadata': {}})
for entry in locations:
loc_url = entry['url']
loc_meta = entry['metadata']
o = urlparse.urlparse(loc_url)
if o.scheme in CONF.allowed_direct_url_schemes:
if o.scheme == "file":
with open(o.path, "r") as f:
# a system call to cp could have significant performance
# advantages, however we do not have the path to files at
# this point in the abstraction.
shutil.copyfileobj(f, data)
return
elif o.scheme in ["uds", "uds+https"]:
try:
xfer_mod = uds_download.get_download_handler()
if data:
path = data.name
image_chunks = xfer_mod.download(context,
o,
path,
loc_meta)
msg = _("Successfully transferred "
"using %s") % o.scheme
LOG.info(msg)
return
except Exception as ex:
LOG.exception(ex)
elif o.scheme in ["swift", "swift+https"]:
try:
xfer_mod = swift_download.get_download_handler()
if data:
path = data.name
xfer_mod.download(context,
o,
path,
loc_meta)
msg = _("Successfully transferred "
"using %s") % o.scheme
LOG.info(msg)
return
except Exception as ex:
LOG.exception(ex)
try:
image_chunks = self._client.call(context, 'data', image_id)
except Exception:
_reraise_translated_image_exception(image_id)
if not data:
return image_chunks
else:
path = data.name
direct_io.write(path, image_chunks)
