150 lines
5.2 KiB
Python
150 lines
5.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 OpenStack Foundation
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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 webob
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from nova.api.openstack import common
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from nova.api.openstack.compute.views import flavors as flavors_view
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from nova.api.openstack import wsgi
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from nova.api.openstack import xmlutil
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from nova.compute import instance_types
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from nova import exception
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def make_flavor(elem, detailed=False):
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elem.set('name')
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elem.set('id')
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if detailed:
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elem.set('ram')
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elem.set('disk')
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elem.set('vcpus', xmlutil.EmptyStringSelector('vcpus'))
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xmlutil.make_links(elem, 'links')
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flavor_nsmap = {None: xmlutil.XMLNS_V11, 'atom': xmlutil.XMLNS_ATOM}
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class FlavorTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('flavor', selector='flavor')
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make_flavor(root, detailed=True)
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return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
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class MinimalFlavorsTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('flavors')
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elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
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make_flavor(elem)
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return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
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class FlavorsTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('flavors')
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elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
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make_flavor(elem, detailed=True)
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return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
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class Controller(wsgi.Controller):
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"""Flavor controller for the OpenStack API."""
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_view_builder_class = flavors_view.ViewBuilder
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@wsgi.serializers(xml=MinimalFlavorsTemplate)
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def index(self, req):
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"""Return all flavors in brief."""
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flavors = self._get_flavors(req)
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return self._view_builder.index(req, flavors)
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@wsgi.serializers(xml=FlavorsTemplate)
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def detail(self, req):
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"""Return all flavors in detail."""
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flavors = self._get_flavors(req)
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req.cache_db_flavors(flavors)
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return self._view_builder.detail(req, flavors)
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@wsgi.serializers(xml=FlavorTemplate)
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def show(self, req, id):
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"""Return data about the given flavor id."""
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try:
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flavor = instance_types.get_instance_type_by_flavor_id(id)
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req.cache_db_flavor(flavor)
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except exception.NotFound:
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raise webob.exc.HTTPNotFound()
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return self._view_builder.show(req, flavor)
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def _get_is_public(self, req):
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"""Parse is_public into something usable."""
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is_public = req.params.get('is_public', None)
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if is_public is None:
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# preserve default value of showing only public flavors
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return True
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elif is_public is True or \
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is_public.lower() in ['t', 'true', 'yes', '1']:
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return True
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elif is_public is False or \
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is_public.lower() in ['f', 'false', 'no', '0']:
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return False
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elif is_public.lower() == 'none':
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# value to match all flavors, ignore is_public
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return None
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else:
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msg = _('Invalid is_public filter [%s]') % req.params['is_public']
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raise webob.exc.HTTPBadRequest(explanation=msg)
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def _get_flavors(self, req):
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"""Helper function that returns a list of flavor dicts."""
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filters = {}
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context = req.environ['nova.context']
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if context.is_admin:
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# Only admin has query access to all flavor types
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filters['is_public'] = self._get_is_public(req)
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else:
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filters['is_public'] = True
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filters['disabled'] = False
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if 'minRam' in req.params:
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try:
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filters['min_memory_mb'] = int(req.params['minRam'])
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except ValueError:
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msg = _('Invalid minRam filter [%s]') % req.params['minRam']
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if 'minDisk' in req.params:
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try:
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filters['min_root_gb'] = int(req.params['minDisk'])
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except ValueError:
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msg = _('Invalid minDisk filter [%s]') % req.params['minDisk']
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raise webob.exc.HTTPBadRequest(explanation=msg)
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flavors = instance_types.get_all_types(context, filters=filters)
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flavors_list = flavors.values()
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sorted_flavors = sorted(flavors_list,
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key=lambda item: item['flavorid'])
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limited_flavors = common.limited_by_marker(sorted_flavors, req)
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return limited_flavors
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def create_resource():
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return wsgi.Resource(Controller())
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