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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 OpenStack Foundation
# 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 extensions
from nova.api.openstack import wsgi
from nova.api.openstack import xmlutil
from nova.compute import flavors
from nova import exception
from nova.openstack.common import strutils
def make_flavor(elem, detailed=False):
elem.set('name')
elem.set('id')
if detailed:
elem.set('ram')
elem.set('disk')
elem.set('vcpus', xmlutil.EmptyStringSelector('vcpus'))
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 FlavorsController(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."""
limited_flavors = self._get_flavors(req)
return self._view_builder.index(req, limited_flavors)
@wsgi.serializers(xml=FlavorsTemplate)
def detail(self, req):
"""Return all flavors in detail."""
limited_flavors = self._get_flavors(req)
req.cache_db_flavors(limited_flavors)
return self._view_builder.detail(req, limited_flavors)
@wsgi.serializers(xml=FlavorTemplate)
def show(self, req, id):
"""Return data about the given flavor id."""
try:
flavor = flavors.get_flavor_by_flavor_id(id)
req.cache_db_flavor(flavor)
except exception.NotFound:
raise webob.exc.HTTPNotFound()
return self._view_builder.show(req, flavor)
def _parse_is_public(self, is_public):
"""Parse is_public into something usable."""
if is_public is None:
# preserve default value of showing only public flavors
return True
elif is_public == 'none':
return None
else:
try:
return strutils.bool_from_string(is_public, strict=True)
except ValueError:
msg = _('Invalid is_public filter [%s]') % is_public
raise webob.exc.HTTPBadRequest(explanation=msg)
def _get_flavors(self, req):
"""Helper function that returns a list of flavor dicts."""
filters = {}
context = req.environ['nova.context']
if context.is_admin:
# Only admin has query access to all flavor types
filters['is_public'] = self._parse_is_public(
req.params.get('is_public', None))
else:
filters['is_public'] = True
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)
limited_flavors = flavors.get_all_flavors(context, filters=filters)
flavors_list = limited_flavors.values()
sorted_flavors = sorted(flavors_list,
key=lambda item: item['flavorid'])
limited_flavors = common.limited_by_marker(sorted_flavors, req)
return limited_flavors
class Flavors(extensions.V3APIExtensionBase):
""" Flavors Extension. """
name = "flavors"
alias = "flavors"
namespace = "http://docs.openstack.org/compute/core/flavors/v3"
version = 1
def get_resources(self):
collection_actions = {'detail': 'GET'}
member_actions = {'action': 'POST'}
resources = [
extensions.ResourceExtension('flavors',
FlavorsController(),
member_name='flavor',
collection_actions=collection_actions,
member_actions=member_actions)
]
return resources
def get_controller_extensions(self):
return []
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