heat api : add waitcondition to cfn api
Add a new path to the CFN api, which implements CFN style waitcondition notification - this means we can move away from the separate heat-metadata service for this purpose, instead using the authenticated CFN API blueprint metsrv-remove Change-Id: I62cff7cb4c7a009fea2c8f62ea446d8d758f5429 Signed-off-by: Steven Hardy <shardy@redhat.com>
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@ -18,6 +18,7 @@ import routes
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from webob import Request
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from heat.api.cfn.v1 import stacks
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from heat.api.cfn.v1 import waitcondition
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from heat.common import wsgi
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from heat.openstack.common import log as logging
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@ -70,4 +71,13 @@ class API(wsgi.Router):
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mapper.connect("/", controller=stacks_resource, action="index")
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# Add controller which handles waitcondition notifications
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# This is not part of the main CFN API spec, hence handle it
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# separately via a different path
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waitcondition_controller = waitcondition.create_resource(conf)
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mapper.connect('/waitcondition/:stack_id/resources/:resource_name',
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controller=waitcondition_controller,
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action='update_waitcondition',
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conditions=dict(method=['PUT']))
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super(API, self).__init__(mapper)
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71
heat/api/cfn/v1/waitcondition.py
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71
heat/api/cfn/v1/waitcondition.py
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@ -0,0 +1,71 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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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 json
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from webob.exc import Response
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from heat.common import wsgi
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from heat.common import context
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from heat.engine import rpcapi as engine_rpcapi
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from heat.openstack.common import rpc
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def json_response(http_status, data):
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"""Create a JSON response with a specific HTTP code."""
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response = Response(json.dumps(data))
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response.status = http_status
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response.content_type = 'application/json'
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return response
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def json_error(http_status, message):
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"""Create a JSON error response."""
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body = {'error': message}
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return json_response(http_status, body)
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class WaitConditionController:
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def __init__(self, options):
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self.options = options
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self.engine_rpcapi = engine_rpcapi.EngineAPI()
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def update_waitcondition(self, req, body, stack_id, resource_name):
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con = req.context
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[error, metadata] = self.engine_rpcapi.metadata_update(con,
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stack_id=stack_id,
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resource_name=resource_name,
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metadata=body)
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if error:
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if error == 'stack':
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return json_error(404,
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'The stack "%s" does not exist.' % stack_id)
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else:
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return json_error(404,
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'The resource "%s" does not exist.' % resource_name)
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return json_response(201, {
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'resource': resource_name,
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'metadata': body,
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})
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def create_resource(options):
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"""
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Stacks resource factory method.
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"""
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deserializer = wsgi.JSONRequestDeserializer()
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serializer = wsgi.JSONResponseSerializer()
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return wsgi.Resource(WaitConditionController(options), deserializer,
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serializer)
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