50d7cc82c5
Use the common roles throught this role to remove all of the boilerplate code we had. The common modules do most of the heavy lifing. Update to fix the resolve.conf issue with the image cache prep. Add legacy image support and use smaller upstream images by default. Now that suse supports systemd-networkd we can enable suse support in nspawn. Change-Id: I5f6ceb928f5c0902adf2e34f96a5998840400777 Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
121 lines
3.2 KiB
Python
121 lines
3.2 KiB
Python
#!/usr/bin/env python
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# Copyright 2017, Rackspace US, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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try:
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import httplib
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except ImportError:
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import http.client as httplib
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import ssl
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try:
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import urlparse
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except ImportError:
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import urllib.parse as urlparse
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import sys
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__DOC__ = """
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USAGE:
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This script will take arguments passed into it to discover the url
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of a given container image using the distro, release, architecture,
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and variant as the parameters.
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EXAMPLE:
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# python lxc-image-fetch-url ubuntu xenial amd64 default
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"""
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LXC_CACHE_SERVER = 'https://us.images.linuxcontainers.org'
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LXC_INDEX = '{0}/meta/1.0/index-system'.format(LXC_CACHE_SERVER)
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def get_image_url(url, depth=0):
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if depth > 10:
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raise SystemExit('Too many redirects')
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url_path = urlparse.urlparse(url, allow_fragments=True)
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if url_path.scheme == 'https':
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conn = httplib.HTTPSConnection(
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host=url_path.netloc,
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context=ssl._create_unverified_context()
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)
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else:
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conn = httplib.HTTPConnection(host=url_path.netloc)
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try:
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conn.request('GET', url_path.path)
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except httplib.BadStatusLine:
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raise SystemExit('Connection Failure')
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else:
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resp = conn.getresponse()
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headers = dict(resp.getheaders())
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check_redirect = headers.get('location', None)
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if not check_redirect:
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check_redirect = headers.get('Location', None)
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if check_redirect:
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depth += 1
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return get_image_url(
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url=check_redirect,
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depth=depth
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)
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else:
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return (
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str(url),
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resp.read().decode('UTF-8').splitlines()
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)
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finally:
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conn.close()
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def main():
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try:
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distro = sys.argv[1]
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release = sys.argv[2]
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arch = sys.argv[3]
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variant = sys.argv[4]
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except IndexError:
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print('Missing argument, Please see the documentation.')
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raise SystemExit(__DOC__)
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_, meta = get_image_url(url=LXC_INDEX, depth=0)
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image_hint = '{0};{1};{2};{3}'.format(
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distro,
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release,
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arch,
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variant
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)
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images = sorted([i for i in meta if i.strip().startswith(image_hint)])
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if not images:
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print(__DOC__ + '\nAvailable options:')
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for line in meta:
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print(';'.join(line.split(';')[:-2]))
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raise SystemExit(
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'No Image found with image hint "{0}"'.format(image_hint)
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)
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container_url = urlparse.urljoin(
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urlparse.urljoin(
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LXC_CACHE_SERVER,
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images[0].split(';')[-1]
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),
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'rootfs.tar.xz'
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)
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print(container_url)
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if __name__ == '__main__':
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main()
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