murano/contrib/plugins/murano_exampleplugin/murano_exampleplugin/__init__.py

79 lines
2.3 KiB
Python

# Copyright (c) 2015 Mirantis, Inc.
#
# 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.
import json
import cfg
import glanceclient
from oslo_config import cfg as config
from oslo_log import log as logging
from murano.common import auth_utils
CONF = config.CONF
LOG = logging.getLogger(__name__)
class GlanceClient(object):
def __init__(self, context):
self.client = self.create_glance_client()
def list(self):
images = self.client.images.list()
while True:
try:
image = next(images)
yield GlanceClient._format(image)
except StopIteration:
break
def get_by_name(self, name):
images = list(self.client.images.list(filters={"name": name}))
if len(images) > 1:
raise AmbiguousNameException(name)
elif len(images) == 0:
return None
else:
return GlanceClient._format(images[0])
def get_by_id(self, imageId):
image = self.client.images.get(imageId)
return GlanceClient._format(image)
@staticmethod
def _format(image):
res = {"id": image.id, "name": image.name}
if hasattr(image, "murano_image_info"):
res["meta"] = json.loads(image.murano_image_info)
return res
@classmethod
def init_plugin(cls):
cls.CONF = cfg.init_config(CONF)
def create_glance_client(self):
LOG.debug("Creating a glance client")
params = auth_utils.get_session_client_parameters(
service_type='image', conf=self.CONF)
return glanceclient.Client(self.CONF.api_version, **params)
class AmbiguousNameException(Exception):
def __init__(self, name):
super(AmbiguousNameException, self).__init__("Image name '%s'"
" is ambiguous" % name)