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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 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.
import webob
from nova.api.openstack import common
from nova.api.openstack.compute.views import flavors as flavors_view
from nova.api.openstack import wsgi
from nova.api.openstack import xmlutil
from nova.compute import instance_types
from nova import exception
def make_flavor(elem, detailed=False):
elem.set('name')
elem.set('id')
if detailed:
elem.set('ram')
elem.set('disk')
for attr in ("vcpus", "swap", "rxtx_factor"):
elem.set(attr, xmlutil.EmptyStringSelector(attr))
xmlutil.make_links(elem, 'links')
flavor_nsmap = {None: xmlutil.XMLNS_V11, 'atom': xmlutil.XMLNS_ATOM}
class FlavorTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavor', selector='flavor')
make_flavor(root, detailed=True)
return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
class MinimalFlavorsTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavors')
elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
make_flavor(elem)
return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
class FlavorsTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavors')
elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
make_flavor(elem, detailed=True)
return xmlutil.MasterTemplate(root, 1, nsmap=flavor_nsmap)
class Controller(wsgi.Controller):
"""Flavor controller for the OpenStack API."""
_view_builder_class = flavors_view.ViewBuilder
@wsgi.serializers(xml=MinimalFlavorsTemplate)
def index(self, req):
"""Return all flavors in brief."""
flavors = self._get_flavors(req)
return self._view_builder.index(req, flavors)
@wsgi.serializers(xml=FlavorsTemplate)
def detail(self, req):
"""Return all flavors in detail."""
flavors = self._get_flavors(req)
return self._view_builder.detail(req, flavors)
@wsgi.serializers(xml=FlavorTemplate)
def show(self, req, id):
"""Return data about the given flavor id."""
try:
flavor = instance_types.get_instance_type_by_flavor_id(id)
except exception.NotFound:
raise webob.exc.HTTPNotFound()
return self._view_builder.show(req, flavor)
def _get_flavors(self, req):
"""Helper function that returns a list of flavor dicts."""
filters = {}
context = req.environ['nova.context']
if not context.is_admin:
filters['disabled'] = False
if 'minRam' in req.params:
try:
filters['min_memory_mb'] = int(req.params['minRam'])
except ValueError:
msg = _('Invalid minRam filter [%s]') % req.params['minRam']
raise webob.exc.HTTPBadRequest(explanation=msg)
if 'minDisk' in req.params:
try:
filters['min_root_gb'] = int(req.params['minDisk'])
except ValueError:
msg = _('Invalid minDisk filter [%s]') % req.params['minDisk']
raise webob.exc.HTTPBadRequest(explanation=msg)
flavors = instance_types.get_all_types(filters=filters)
flavors_list = flavors.values()
sorted_flavors = sorted(flavors_list,
key=lambda item: item['flavorid'])
limited_flavors = common.limited_by_marker(sorted_flavors, req)
return limited_flavors
def create_resource():
return wsgi.Resource(Controller())
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