41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
#
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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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from heat.openstack.common.py3kcompat import urlutils
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def get_collection_links(request, items):
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"""Retrieve 'next' link, if applicable."""
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links = []
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try:
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limit = int(request.params.get("limit") or 0)
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except ValueError:
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limit = 0
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if limit > 0 and limit == len(items):
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last_item = items[-1]
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last_item_id = last_item["id"]
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links.append({
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"rel": "next",
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"href": _get_next_link(request, last_item_id)
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})
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return links
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def _get_next_link(request, marker):
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"""Return href string with proper limit and marker params."""
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params = request.params.copy()
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params['marker'] = marker
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return "%s?%s" % (request.path_url, urlutils.urlencode(params))
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