49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
# Copyright 2013 Red Hat, Inc.
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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 pecan
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from wsme import types as wtypes
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from ironic.api.controllers.v1 import base
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from ironic.api.controllers.v1 import link
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class Collection(base.APIBase):
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next = wtypes.text
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"A link to retrieve the next subset of the collection"
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@property
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def collection(self):
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return getattr(self, self._type)
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def has_next(self, limit):
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"""Return whether collection has more items."""
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return len(self.collection) and len(self.collection) == limit
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def get_next(self, limit, url=None, **kwargs):
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"""Return a link to the next subset of the collection."""
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if not self.has_next(limit):
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return wtypes.Unset
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resource_url = url or self._type
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q_args = ''.join(['%s=%s&' % (key, kwargs[key]) for key in kwargs])
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next_args = '?%(args)slimit=%(limit)d&marker=%(marker)s' % {
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'args': q_args, 'limit': limit,
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'marker': self.collection[-1].uuid}
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return link.Link.make_link('next', pecan.request.host_url,
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resource_url, next_args).href
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