Source code for ironic_python_agent.api.app

# Copyright 2013 Rackspace, Inc.
#
# 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.

import pecan
from pecan import hooks

from ironic_python_agent.api import config


[docs]class AgentHook(hooks.PecanHook): """Hook to attach agent instance to API requests.""" def __init__(self, agent, *args, **kwargs): super(AgentHook, self).__init__(*args, **kwargs) self.agent = agent
[docs] def before(self, state): state.request.agent = self.agent
def get_pecan_config(): """Set up the pecan configuration. :returns: pecan configuration object. """ filename = config.__file__.replace('.pyc', '.py') filename = filename.replace('.pyo', '.py') return pecan.configuration.conf_from_file(filename) def setup_app(pecan_config=None, agent=None): """Set up the API app. :param pecan_config: a pecan configuration object. :param agent: an :class:`ironic_python_agent.agent.IronicPythonAgent` instance. :returns: wsgi app object. """ app_hooks = [AgentHook(agent)] if not pecan_config: pecan_config = get_pecan_config() pecan.configuration.set_config(dict(pecan_config), overwrite=True) app = pecan.make_app( pecan_config.app.root, static_root=pecan_config.app.static_root, debug=pecan_config.app.debug, force_canonical=getattr(pecan_config.app, 'force_canonical', True), hooks=app_hooks, ) return app
[docs]class VersionSelectorApplication(object): """WSGI application that handles multiple API versions.""" def __init__(self, agent): pc = get_pecan_config() self.v1 = setup_app(pecan_config=pc, agent=agent) def __call__(self, environ, start_response): return self.v1(environ, start_response)

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