3002575c80
In the process of unification of the clients code we should reuse common functionality from Oslo. Related to blueprint common-client-library-2 Change-Id: I3d82621cced57ad7bc14a2a40e4bef7522f233da
84 lines
2.5 KiB
Python
84 lines
2.5 KiB
Python
# Copyright 2012 OpenStack Foundation
|
|
# 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.
|
|
|
|
"""
|
|
Base utilities to build API operation managers and objects on top of.
|
|
"""
|
|
|
|
import copy
|
|
|
|
from glanceclient.openstack.common.apiclient import base
|
|
|
|
# Python 2.4 compat
|
|
try:
|
|
all
|
|
except NameError:
|
|
def all(iterable):
|
|
return True not in (not x for x in iterable)
|
|
|
|
|
|
def getid(obj):
|
|
"""
|
|
Abstracts the common pattern of allowing both an object or an object's ID
|
|
(UUID) as a parameter when dealing with relationships.
|
|
"""
|
|
try:
|
|
return obj.id
|
|
except AttributeError:
|
|
return obj
|
|
|
|
|
|
class Manager(object):
|
|
"""
|
|
Managers interact with a particular type of API (servers, flavors, images,
|
|
etc.) and provide CRUD operations for them.
|
|
"""
|
|
resource_class = None
|
|
|
|
def __init__(self, api):
|
|
self.api = api
|
|
|
|
def _list(self, url, response_key, obj_class=None, body=None):
|
|
resp, body = self.api.json_request('GET', url)
|
|
|
|
if obj_class is None:
|
|
obj_class = self.resource_class
|
|
|
|
data = body[response_key]
|
|
return [obj_class(self, res, loaded=True) for res in data if res]
|
|
|
|
def _delete(self, url):
|
|
self.api.raw_request('DELETE', url)
|
|
|
|
def _update(self, url, body, response_key=None):
|
|
resp, body = self.api.json_request('PUT', url, body=body)
|
|
# PUT requests may not return a body
|
|
if body:
|
|
return self.resource_class(self, body[response_key])
|
|
|
|
|
|
class Resource(base.Resource):
|
|
"""
|
|
A resource represents a particular instance of an object (tenant, user,
|
|
etc). This is pretty much just a bag for attributes.
|
|
"""
|
|
|
|
def to_dict(self):
|
|
# Note(akurilin): There is a patch in Oslo, that adds to_dict() method
|
|
# to common Resource - I1db6c12a1f798de7f7fafd0c34fb0ef523610153.
|
|
# When Oslo code comes, we will be in able to remove this method
|
|
# and class at all.
|
|
return copy.deepcopy(self._info)
|