552a68d2bf
Includes tests. Related to bp glance-api-v2-image-members Change-Id: Ic48f54639fec4dc9b48819a8ffb1f0097001894c
113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
# Copyright 2012 OpenStack LLC.
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# All Rights Reserved.
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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 urllib
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from glanceclient.common import utils
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DEFAULT_PAGE_SIZE = 20
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class Controller(object):
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def __init__(self, http_client, model):
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self.http_client = http_client
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self.model = model
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def list(self, **kwargs):
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"""Retrieve a listing of Image objects
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:param page_size: Number of images to request in each paginated request
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:returns generator over list of Images
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"""
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def paginate(url):
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resp, body = self.http_client.json_request('GET', url)
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for image in body['images']:
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yield image
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try:
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next_url = body['next']
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except KeyError:
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return
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else:
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for image in paginate(next_url):
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yield image
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filters = kwargs.get('filters', {})
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if not kwargs.get('page_size'):
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filters['limit'] = DEFAULT_PAGE_SIZE
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else:
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filters['limit'] = kwargs['page_size']
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for param, value in filters.iteritems():
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if isinstance(value, basestring):
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filters[param] = utils.ensure_str(value)
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url = '/v2/images?%s' % urllib.urlencode(filters)
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for image in paginate(url):
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#NOTE(bcwaldon): remove 'self' for now until we have an elegant
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# way to pass it into the model constructor without conflict
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image.pop('self', None)
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yield self.model(**image)
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def get(self, image_id):
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url = '/v2/images/%s' % image_id
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resp, body = self.http_client.json_request('GET', url)
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#NOTE(bcwaldon): remove 'self' for now until we have an elegant
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# way to pass it into the model constructor without conflict
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body.pop('self', None)
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return self.model(**body)
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def data(self, image_id, do_checksum=True):
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"""
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Retrieve data of an image.
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:param image_id: ID of the image to download.
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:param do_checksum: Enable/disable checksum validation.
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"""
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url = '/v2/images/%s/file' % image_id
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resp, body = self.http_client.raw_request('GET', url)
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checksum = resp.getheader('content-md5', None)
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if do_checksum and checksum is not None:
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return utils.integrity_iter(body, checksum)
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else:
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return body
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def delete(self, image_id):
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"""Delete an image."""
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self.http_client.json_request('DELETE', 'v2/images/%s' % image_id)
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def update(self, image_id, **kwargs):
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"""
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Update attributes of an image.
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:param image_id: ID of the image to modify.
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:param **kwargs: Image attribute names and their new values.
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"""
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image = self.get(image_id)
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for (key, value) in kwargs.items():
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setattr(image, key, value)
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url = '/v2/images/%s' % image_id
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hdrs = {'Content-Type': 'application/openstack-images-v2.0-json-patch'}
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self.http_client.raw_request('PATCH', url,
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headers=hdrs,
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body=image.patch)
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#NOTE(bcwaldon): calling image.patch doesn't clear the changes, so
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# we need to fetch the image again to get a clean history. This is
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# an obvious optimization for warlock
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return self.get(image_id)
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