ironic-python-agent/ironic_python_agent/api/app.py
Sam Betts f58f7b9a07 TinyIPA: Precompile python code for faster load
This patch adds code into the tinyipa build process and IPA itself to
allow the required python code to be PYTHONOPTIMIZE precompiled into
pyo files, this speeds up IPA startup time in a nested virt by 50%.

Change-Id: Ib60c420719ea52a602c1752b572d3b217c2cefc7
2016-05-11 18:58:57 +01:00

76 lines
2.2 KiB
Python

# 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
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
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
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)