fa2a5c09c5
Bug #1073194 We use openstack common log to do logging. At the same time, we will use quantum logger as our top logger, so that all sub loggers will be set according to quantum.conf Change-Id: I5adf72e6031ad437e05c3521864a83757b3e7887
130 lines
4.8 KiB
Python
130 lines
4.8 KiB
Python
# Copyright 2012 OpenStack LLC.
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# All Rights Reserved.
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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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"""
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Utility methods for working with WSGI servers redux
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"""
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import webob
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import webob.dec
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import webob.exc
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from quantum.common import exceptions
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from quantum import context
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from quantum.openstack.common import jsonutils as json
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from quantum.openstack.common import log as logging
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from quantum import wsgi
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LOG = logging.getLogger(__name__)
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class Request(webob.Request):
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"""Add some Openstack API-specific logic to the base webob.Request."""
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def best_match_content_type(self):
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supported = ('application/json', )
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return self.accept.best_match(supported,
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default_match='application/json')
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@property
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def context(self):
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#Eventually the Auth[NZ] code will supply this. (mdragon)
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#when that happens this if block should raise instead.
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if 'quantum.context' not in self.environ:
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self.environ['quantum.context'] = context.get_admin_context()
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return self.environ['quantum.context']
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def Resource(controller, faults=None, deserializers=None, serializers=None):
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"""Represents an API entity resource and the associated serialization and
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deserialization logic
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"""
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default_deserializers = {'application/xml': wsgi.XMLDeserializer(),
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'application/json': lambda x: json.loads(x)}
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default_serializers = {'application/xml': wsgi.XMLDictSerializer(),
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'application/json': lambda x: json.dumps(x)}
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format_types = {'xml': 'application/xml',
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'json': 'application/json'}
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action_status = dict(create=201, delete=204)
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default_deserializers.update(deserializers or {})
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default_serializers.update(serializers or {})
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deserializers = default_deserializers
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serializers = default_serializers
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faults = faults or {}
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@webob.dec.wsgify(RequestClass=Request)
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def resource(request):
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route_args = request.environ.get('wsgiorg.routing_args')
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if route_args:
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args = route_args[1].copy()
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else:
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args = {}
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# NOTE(jkoelker) by now the controller is already found, remove
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# it from the args if it is in the matchdict
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args.pop('controller', None)
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fmt = args.pop('format', None)
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action = args.pop('action', None)
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content_type = format_types.get(fmt,
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request.best_match_content_type())
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deserializer = deserializers.get(content_type)
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serializer = serializers.get(content_type)
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try:
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if request.body:
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args['body'] = deserializer(request.body)
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method = getattr(controller, action)
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result = method(request=request, **args)
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except exceptions.QuantumException as e:
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LOG.exception('%s failed' % action)
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body = serializer({'QuantumError': str(e)})
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kwargs = {'body': body, 'content_type': content_type}
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for fault in faults:
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if isinstance(e, fault):
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raise faults[fault](**kwargs)
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raise webob.exc.HTTPInternalServerError(**kwargs)
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except webob.exc.HTTPException as e:
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LOG.exception('%s failed' % action)
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e.body = serializer({'QuantumError': str(e)})
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e.content_type = content_type
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raise
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except Exception as e:
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# NOTE(jkoelker) Everyting else is 500
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LOG.exception('%s failed' % action)
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# Do not expose details of 500 error to clients.
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msg = _('Request Failed: internal server error while '
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'processing your request.')
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body = serializer({'QuantumError': msg})
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kwargs = {'body': body, 'content_type': content_type}
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raise webob.exc.HTTPInternalServerError(**kwargs)
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status = action_status.get(action, 200)
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body = serializer(result)
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# NOTE(jkoelker) Comply with RFC2616 section 9.7
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if status == 204:
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content_type = ''
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body = None
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return webob.Response(request=request, status=status,
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content_type=content_type,
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body=body)
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return resource
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