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

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1.7 KiB

# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
#
# 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.
from oslo_messaging import exceptions
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 ServiceController(object):
"""WSGI controller for reporting the heat engine status in Heat v1 API."""
# Define request scope (must match what is in policy.json or policies in
# code)
REQUEST_SCOPE = 'service'
def __init__(self, options):
self.options = options
self.rpc_client = rpc_client.EngineClient()
@util.registered_policy_enforce
def index(self, req):
try:
services = self.rpc_client.list_services(req.context)
return {'services': services}
except exceptions.MessagingTimeout:
msg = _('All heat engines are down.')
raise exc.HTTPServiceUnavailable(msg)
def create_resource(options):
deserializer = wsgi.JSONRequestDeserializer()
serializer = serializers.JSONResponseSerializer()
return wsgi.Resource(ServiceController(options), deserializer, serializer)