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#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Download images from Canonical Image Store
"""
import gettext
import json
import os
import tempfile
import shutil
import subprocess
import sys
import urllib2
# If ../nova/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
os.pardir,
os.pardir))
if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
sys.path.insert(0, possible_topdir)
gettext.install('nova', unicode=1)
from nova import flags
from nova import log as logging
from nova import utils
from nova.objectstore import image
FLAGS = flags.FLAGS
API_URL = 'https://imagestore.canonical.com/api/dashboard'
def get_images():
"""Get a list of the images from the imagestore URL."""
images = json.load(urllib2.urlopen(API_URL))['images']
images = [img for img in images if img['title'].find('amd64') > -1]
return images
def download(img):
"""Download an image to the local filesystem."""
# FIXME(ja): add checksum/signature checks
tempdir = tempfile.mkdtemp(prefix='cis-')
kernel_id = None
ramdisk_id = None
for f in img['files']:
if f['kind'] == 'kernel':
dest = os.path.join(tempdir, 'kernel')
subprocess.call(['curl', '--fail', f['url'], '-o', dest])
kernel_id = image.Image.add(dest,
description='kernel/' + img['title'], kernel=True)
for f in img['files']:
if f['kind'] == 'ramdisk':
dest = os.path.join(tempdir, 'ramdisk')
subprocess.call(['curl', '--fail', f['url'], '-o', dest])
ramdisk_id = image.Image.add(dest,
description='ramdisk/' + img['title'], ramdisk=True)
for f in img['files']:
if f['kind'] == 'image':
dest = os.path.join(tempdir, 'image')
subprocess.call(['curl', '--fail', f['url'], '-o', dest])
ramdisk_id = image.Image.add(dest,
description=img['title'], kernel=kernel_id, ramdisk=ramdisk_id)
shutil.rmtree(tempdir)
def main():
"""Main entry point."""
utils.default_flagfile()
argv = FLAGS(sys.argv)
logging.setup()
images = get_images()
if len(argv) == 2:
for img in images:
if argv[1] == 'all' or argv[1] == img['title']:
download(img)
else:
print 'usage: %s (title|all)'
print 'available images:'
for img in images:
print img['title']
if __name__ == '__main__':
main()
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