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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2011 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.
"""The flavor access extension."""
import webob
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
ALIAS = 'os-flavor-access'
authorize = extensions.soft_extension_authorizer('compute', 'v3:' + ALIAS)
def make_flavor(elem):
elem.set('{%s}is_public' % FlavorAccess.namespace,
'%s:is_public' % FlavorAccess.alias)
def make_flavor_access(elem):
elem.set('flavor_id')
elem.set('tenant_id')
class FlavorTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavor', selector='flavor')
make_flavor(root)
alias = FlavorAccess.alias
namespace = FlavorAccess.namespace
return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
class FlavorsTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavors')
elem = xmlutil.SubTemplateElement(root, 'flavor', selector='flavors')
make_flavor(elem)
alias = FlavorAccess.alias
namespace = FlavorAccess.namespace
return xmlutil.SlaveTemplate(root, 1, nsmap={alias: namespace})
class FlavorAccessTemplate(xmlutil.TemplateBuilder):
def construct(self):
root = xmlutil.TemplateElement('flavor_access')
elem = xmlutil.SubTemplateElement(root, 'access',
selector='flavor_access')
make_flavor_access(elem)
return xmlutil.MasterTemplate(root, 1)
def _marshall_flavor_access(flavor_id):
rval = []
try:
access_list = flavors.\
get_flavor_access_by_flavor_id(flavor_id)
except exception.FlavorNotFound:
explanation = _("Flavor not found.")
raise webob.exc.HTTPNotFound(explanation=explanation)
for access in access_list:
rval.append({'flavor_id': flavor_id,
'tenant_id': access['project_id']})
return {'flavor_access': rval}
class FlavorAccessController(object):
"""The flavor access API controller for the OpenStack API."""
def __init__(self):
super(FlavorAccessController, self).__init__()
@wsgi.serializers(xml=FlavorAccessTemplate)
def index(self, req, flavor_id):
context = req.environ['nova.context']
authorize(context)
try:
flavor = flavors.get_flavor_by_flavor_id(flavor_id)
except exception.FlavorNotFound:
explanation = _("Flavor not found.")
raise webob.exc.HTTPNotFound(explanation=explanation)
# public flavor to all projects
if flavor['is_public']:
explanation = _("Access list not available for public flavors.")
raise webob.exc.HTTPNotFound(explanation=explanation)
# private flavor to listed projects only
return _marshall_flavor_access(flavor_id)
class FlavorActionController(wsgi.Controller):
"""The flavor access API controller for the OpenStack API."""
def _check_body(self, body):
if body is None or body == "":
raise webob.exc.HTTPBadRequest(explanation=_("No request body"))
def _get_flavor_refs(self, context):
"""Return a dictionary mapping flavorid to flavor_ref."""
flavor_refs = flavors.get_all_flavors(context)
rval = {}
for name, obj in flavor_refs.iteritems():
rval[obj['flavorid']] = obj
return rval
def _extend_flavor(self, flavor_rval, flavor_ref):
key = "%s:is_public" % (FlavorAccess.alias)
flavor_rval[key] = flavor_ref['is_public']
@wsgi.extends
def show(self, req, resp_obj, id):
context = req.environ['nova.context']
if authorize(context):
# Attach our slave template to the response object
resp_obj.attach(xml=FlavorTemplate())
db_flavor = req.get_db_flavor(id)
self._extend_flavor(resp_obj.obj['flavor'], db_flavor)
@wsgi.extends
def detail(self, req, resp_obj):
context = req.environ['nova.context']
if authorize(context):
# Attach our slave template to the response object
resp_obj.attach(xml=FlavorsTemplate())
flavors = list(resp_obj.obj['flavors'])
for flavor_rval in flavors:
db_flavor = req.get_db_flavor(flavor_rval['id'])
self._extend_flavor(flavor_rval, db_flavor)
@wsgi.extends(action='create')
def create(self, req, body, resp_obj):
context = req.environ['nova.context']
if authorize(context):
# Attach our slave template to the response object
resp_obj.attach(xml=FlavorTemplate())
db_flavor = req.get_db_flavor(resp_obj.obj['flavor']['id'])
self._extend_flavor(resp_obj.obj['flavor'], db_flavor)
@wsgi.serializers(xml=FlavorAccessTemplate)
@wsgi.action("addTenantAccess")
def _addTenantAccess(self, req, id, body):
context = req.environ['nova.context']
authorize(context)
self._check_body(body)
vals = body['addTenantAccess']
tenant = vals['tenant']
try:
flavors.add_flavor_access(id, tenant, context)
except exception.FlavorAccessExists as err:
raise webob.exc.HTTPConflict(explanation=err.format_message())
return _marshall_flavor_access(id)
@wsgi.serializers(xml=FlavorAccessTemplate)
@wsgi.action("removeTenantAccess")
def _removeTenantAccess(self, req, id, body):
context = req.environ['nova.context']
authorize(context)
self._check_body(body)
vals = body['removeTenantAccess']
tenant = vals['tenant']
try:
flavors.remove_flavor_access(id, tenant, context)
except exception.FlavorAccessNotFound as e:
raise webob.exc.HTTPNotFound(explanation=e.format_message())
return _marshall_flavor_access(id)
class FlavorAccess(extensions.V3APIExtensionBase):
"""Flavor access support."""
name = "FlavorAccess"
alias = ALIAS
namespace = "http://docs.openstack.org/compute/ext/%s/api/v3" % ALIAS
version = 1
def get_resources(self):
res = extensions.ResourceExtension(
ALIAS,
controller=FlavorAccessController(),
parent=dict(member_name='flavor', collection_name='flavors'))
return [res]
def get_controller_extensions(self):
extension = extensions.ControllerExtension(
self, 'flavors', FlavorActionController())
return [extension]
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