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