octavia/octavia/api/app.py
Michael Johnson e60cd189fb Add auditing support to the Octavia API
This patch adds Cloud Auditing Data Federation (CADF) auditing support to the
Octavia API. This is implemented using the keystonemiddleware audit filter.

Change-Id: I87a7e15171dfaf28b6ed97ca71d4423d18fbdbea
2018-12-11 23:32:58 +00:00

99 lines
3.2 KiB
Python

# Copyright 2014 Rackspace
#
# 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 keystonemiddleware.audit as audit_middleware
from oslo_config import cfg
from oslo_log import log as logging
from oslo_middleware import cors
from oslo_middleware import request_id
import pecan
from octavia.api import config as app_config
from octavia.api.drivers import driver_factory
from octavia.common import constants
from octavia.common import exceptions
from octavia.common import keystone
from octavia.common import service as octavia_service
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
def get_pecan_config():
"""Returns the pecan config."""
filename = app_config.__file__.replace('.pyc', '.py')
return pecan.configuration.conf_from_file(filename)
def _init_drivers():
"""Initialize provider drivers."""
for provider in CONF.api_settings.enabled_provider_drivers:
driver_factory.get_driver(provider)
def setup_app(pecan_config=None, debug=False, argv=None):
"""Creates and returns a pecan wsgi app."""
octavia_service.prepare_service(argv)
cfg.CONF.log_opt_values(LOG, logging.DEBUG)
_init_drivers()
if not pecan_config:
pecan_config = get_pecan_config()
pecan.configuration.set_config(dict(pecan_config), overwrite=True)
return pecan.make_app(
pecan_config.app.root,
wrap_app=_wrap_app,
debug=debug,
hooks=pecan_config.app.hooks,
wsme=pecan_config.wsme
)
def _wrap_app(app):
"""Wraps wsgi app with additional middlewares."""
app = request_id.RequestId(app)
if CONF.audit.enabled:
try:
app = audit_middleware.AuditMiddleware(
app,
audit_map_file=CONF.audit.audit_map_file,
ignore_req_list=CONF.audit.ignore_req_list
)
except (EnvironmentError, OSError,
audit_middleware.PycadfAuditApiConfigError) as e:
raise exceptions.InputFileError(
file_name=CONF.audit.audit_map_file,
reason=e
)
if cfg.CONF.api_settings.auth_strategy == constants.KEYSTONE:
app = keystone.SkippingAuthProtocol(app, {})
# This should be the last middleware in the list (which results in
# it being the first in the middleware chain). This is to ensure
# that any errors thrown by other middleware, such as an auth
# middleware - are annotated with CORS headers, and thus accessible
# by the browser.
app = cors.CORS(app, cfg.CONF)
cors.set_defaults(
allow_headers=['X-Auth-Token', 'X-Openstack-Request-Id'],
allow_methods=['GET', 'PUT', 'POST', 'DELETE'],
expose_headers=['X-Auth-Token', 'X-Openstack-Request-Id']
)
return app