62 lines
2.3 KiB
Python
62 lines
2.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Citrix System.
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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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from webob import exc
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from quantum.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class QuantumController(object):
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""" Base controller class for Quantum API """
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# _resource_name will be redefined in sub concrete controller
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_resource_name = None
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def __init__(self, plugin):
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self._plugin = plugin
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super(QuantumController, self).__init__()
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def _prepare_request_body(self, body, params):
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""" verifies required parameters are in request body.
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sets default value for missing optional parameters.
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body argument must be the deserialized body
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"""
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try:
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if body is None:
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# Initialize empty resource for setting default value
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body = {self._resource_name: {}}
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data = body[self._resource_name]
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except KeyError:
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# raise if _resource_name is not in req body.
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raise exc.HTTPBadRequest("Unable to find '%s' in request body"
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% self._resource_name)
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for param in params:
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param_name = param['param-name']
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param_value = data.get(param_name, None)
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# If the parameter wasn't found and it was required, return 400
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if param_value is None and param['required']:
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msg = ("Failed to parse request. " +
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"Parameter: " + param_name + " not specified")
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for line in msg.split('\n'):
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LOG.error(line)
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raise exc.HTTPBadRequest(msg)
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data[param_name] = param_value or param.get('default-value')
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return body
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