OpenStack Orchestration (Heat)
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heat/heat/api/openstack/v1/actions.py

83 lines
2.9 KiB

#
# 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 six
from webob import exc
from heat.api.openstack.v1 import util
from heat.common.i18n import _
from heat.common import serializers
from heat.common import wsgi
from heat.rpc import client as rpc_client
class ActionController(object):
"""WSGI controller for Actions in Heat v1 API.
Implements the API for stack actions
"""
# Define request scope (must match what is in policy.json or policies in
# code)
REQUEST_SCOPE = 'actions'
ACTIONS = (
SUSPEND, RESUME, CHECK,
CANCEL_UPDATE, CANCEL_WITHOUT_ROLLBACK
) = (
'suspend', 'resume', 'check',
'cancel_update', 'cancel_without_rollback'
)
def __init__(self, options):
self.options = options
self.rpc_client = rpc_client.EngineClient()
@util.registered_identified_stack
def action(self, req, identity, body=None):
"""Performs a specified action on a stack.
The body is expecting to contain exactly one item whose key specifies
the action.
"""
body = body or {}
if len(body) < 1:
raise exc.HTTPBadRequest(_("No action specified"))
if len(body) > 1:
raise exc.HTTPBadRequest(_("Multiple actions specified"))
ac = next(six.iterkeys(body))
if ac not in self.ACTIONS:
raise exc.HTTPBadRequest(_("Invalid action %s specified") % ac)
if ac == self.SUSPEND:
self.rpc_client.stack_suspend(req.context, identity)
elif ac == self.RESUME:
self.rpc_client.stack_resume(req.context, identity)
elif ac == self.CHECK:
self.rpc_client.stack_check(req.context, identity)
elif ac == self.CANCEL_UPDATE:
self.rpc_client.stack_cancel_update(req.context, identity,
cancel_with_rollback=True)
elif ac == self.CANCEL_WITHOUT_ROLLBACK:
self.rpc_client.stack_cancel_update(req.context, identity,
cancel_with_rollback=False)
else:
raise exc.HTTPInternalServerError(_("Unexpected action %s") % ac)
def create_resource(options):
"""Actions action factory method."""
deserializer = wsgi.JSONRequestDeserializer()
serializer = serializers.JSONResponseSerializer()
return wsgi.Resource(ActionController(options), deserializer, serializer)