d88d8fc462
* Use a recursive generator function to iterate over the image container. The presence of next links are indicators to continue pagination while their value drives the location of the next page. * A user can pass in --page-size on the command line, or page_size when using the controller directly, to control how many images are requested with each subsequent paginated request. Default page size is 20. * Add a flag (strict_url_check) for the FakeAPI class to control whether it chops off query params when trying to match a request to a fixture. * Related to bp glance-client-v2. Change-Id: Ib98e912a7af0bb570b4fd738733edd9b837d1a12
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
# Copyright 2012 OpenStack LLC.
|
|
# 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.
|
|
|
|
DEFAULT_PAGE_SIZE = 20
|
|
|
|
|
|
class Controller(object):
|
|
def __init__(self, http_client, model):
|
|
self.http_client = http_client
|
|
self.model = model
|
|
|
|
def list(self, page_size=DEFAULT_PAGE_SIZE):
|
|
"""Retrieve a listing of Image objects
|
|
|
|
:param page_size: Number of images to request in each paginated request
|
|
:returns generator over list of Images
|
|
"""
|
|
def paginate(url):
|
|
resp, body = self.http_client.json_request('GET', url)
|
|
for image in body['images']:
|
|
yield image
|
|
try:
|
|
next_url = body['next']
|
|
except KeyError:
|
|
return
|
|
else:
|
|
for image in paginate(next_url):
|
|
yield image
|
|
|
|
url = '/v2/images?limit=%s' % page_size
|
|
|
|
for image in paginate(url):
|
|
#NOTE(bcwaldon): remove 'self' for now until we have an elegant
|
|
# way to pass it into the model constructor without conflict
|
|
image.pop('self', None)
|
|
yield self.model(**image)
|
|
|
|
def get(self, image_id):
|
|
url = '/v2/images/%s' % image_id
|
|
resp, body = self.http_client.json_request('GET', url)
|
|
#NOTE(bcwaldon): remove 'self' for now until we have an elegant
|
|
# way to pass it into the model constructor without conflict
|
|
body['image'].pop('self', None)
|
|
return self.model(**body['image'])
|