109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
# Copyright 2012 Cloudbase Solutions Srl
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import posixpath
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from oslo.config import cfg
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from six.moves.urllib import error
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from six.moves.urllib import request
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from cloudbaseinit.metadata.services import base
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from cloudbaseinit.metadata.services import baseopenstackservice
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from cloudbaseinit.openstack.common import log as logging
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from cloudbaseinit.utils import network
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opts = [
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cfg.StrOpt('metadata_base_url', default='http://169.254.169.254/',
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help='The base URL where the service looks for metadata'),
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cfg.BoolOpt('add_metadata_private_ip_route', default=True,
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help='Add a route for the metadata ip address to the gateway'),
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]
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CONF = cfg.CONF
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CONF.register_opts(opts)
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LOG = logging.getLogger(__name__)
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class HttpService(baseopenstackservice.BaseOpenStackService):
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_POST_PASSWORD_MD_VER = '2013-04-04'
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def __init__(self):
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super(HttpService, self).__init__()
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self._enable_retry = True
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def load(self):
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super(HttpService, self).load()
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if CONF.add_metadata_private_ip_route:
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network.check_metadata_ip_route(CONF.metadata_base_url)
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try:
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self._get_meta_data()
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return True
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except Exception:
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LOG.debug('Metadata not found at URL \'%s\'' %
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CONF.metadata_base_url)
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return False
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def _get_response(self, req):
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try:
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return request.urlopen(req)
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except error.HTTPError as ex:
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if ex.code == 404:
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raise base.NotExistingMetadataException()
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else:
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raise
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def _get_data(self, path):
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norm_path = posixpath.join(CONF.metadata_base_url, path)
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LOG.debug('Getting metadata from: %s', norm_path)
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req = request.Request(norm_path)
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response = self._get_response(req)
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return response.read()
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def _post_data(self, path, data):
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norm_path = posixpath.join(CONF.metadata_base_url, path)
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LOG.debug('Posting metadata to: %s', norm_path)
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req = request.Request(norm_path, data=data)
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self._get_response(req)
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return True
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def _get_password_path(self):
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return 'openstack/%s/password' % self._POST_PASSWORD_MD_VER
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@property
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def can_post_password(self):
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try:
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self._get_meta_data(self._POST_PASSWORD_MD_VER)
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return True
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except base.NotExistingMetadataException:
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return False
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@property
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def is_password_set(self):
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path = self._get_password_path()
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return len(self._get_data(path)) > 0
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def post_password(self, enc_password_b64):
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try:
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path = self._get_password_path()
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action = lambda: self._post_data(path, enc_password_b64)
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return self._exec_with_retry(action)
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except error.HTTPError as ex:
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if ex.code == 409:
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# Password already set
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return False
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else:
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raise
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