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# Copyright 2012-2013 OpenStack Foundation

#

# 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 logging

from glanceclient import exc as gc_exceptions

from glanceclient.v1 import client as gc_v1_client

from glanceclient.v1 import images as gc_v1_images

from openstackclient.common import utils

LOG = logging.getLogger(__name__)

DEFAULT_IMAGE_API_VERSION = '1'

API_VERSION_OPTION = 'os_image_api_version'

API_NAME = "image"

API_VERSIONS = {

"1": "openstackclient.image.client.Client_v1",

"2": "glanceclient.v2.client.Client",

}

IMAGE_API_TYPE = 'image'

IMAGE_API_VERSIONS = {

'1': 'openstackclient.api.image_v1.APIv1',

'2': 'openstackclient.api.image_v2.APIv2',

}

def make_client(instance):

"""Returns an image service client"""

image_client = utils.get_client_class(

API_NAME,

instance._api_version[API_NAME],

API_VERSIONS)

LOG.debug('Instantiating image client: %s', image_client)

endpoint = instance.get_endpoint_for_service_type(

API_NAME,

region_name=instance._region_name,

)

client = image_client(

endpoint,

token=instance.auth.get_token(instance.session),

cacert=instance._cacert,

insecure=instance._insecure,

)

# Create the low-level API

image_api = utils.get_client_class(

API_NAME,

instance._api_version[API_NAME],

IMAGE_API_VERSIONS)

LOG.debug('Instantiating image api: %s', image_api)

client.api = image_api(

session=instance.session,

endpoint=instance.get_endpoint_for_service_type(

IMAGE_API_TYPE,

region_name=instance._region_name,

)

)

return client

def build_option_parser(parser):

"""Hook to add global options"""

parser.add_argument(

'--os-image-api-version',

metavar='<image-api-version>',

default=utils.env(

'OS_IMAGE_API_VERSION',

default=DEFAULT_IMAGE_API_VERSION),

help='Image API version, default=' +

DEFAULT_IMAGE_API_VERSION +

' (Env: OS_IMAGE_API_VERSION)')

return parser

# NOTE(dtroyer): glanceclient.v1.image.ImageManager() doesn't have a find()

# method so add one here until the common client libs arrive

# A similar subclass will be required for v2

class Client_v1(gc_v1_client.Client):

"""An image v1 client that uses ImageManager_v1"""

def __init__(self, *args, **kwargs):

super(Client_v1, self).__init__(*args, **kwargs)

self.images = ImageManager_v1(getattr(self, 'http_client', self))

class ImageManager_v1(gc_v1_images.ImageManager):

"""Add find() and findall() to the ImageManager class"""

def find(self, **kwargs):

"""Find a single item with attributes matching ``**kwargs``.

This isn't very efficient: it loads the entire list then filters on

the Python side.

"""

rl = self.findall(**kwargs)

num = len(rl)

if num == 0:

raise gc_exceptions.NotFound

elif num > 1:

raise gc_exceptions.NoUniqueMatch

else:

return rl[0]

def findall(self, **kwargs):

"""Find all items with attributes matching ``**kwargs``.

This isn't very efficient: it loads the entire list then filters on

the Python side.

"""

found = []

searches = kwargs.items()

for obj in self.list():

try:

if all(getattr(obj, attr) == value

for (attr, value) in searches):

found.append(obj)

except AttributeError:

continue

return found