ceilometer/ceilometer/api/app.py

97 lines
2.6 KiB
Python

#
# Copyright 2012 New Dream Network, LLC (DreamHost)
# Copyright 2015-2016 Red Hat, 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 os
from oslo_config import cfg
from oslo_log import log
from paste import deploy
import pecan
from ceilometer.api import hooks
from ceilometer.api import middleware
LOG = log.getLogger(__name__)
CONF = cfg.CONF
OPTS = [
cfg.StrOpt('api_paste_config',
default="api_paste.ini",
help="Configuration file for WSGI definition of API."
),
]
API_OPTS = [
cfg.BoolOpt('pecan_debug',
default=False,
help='Toggle Pecan Debug Middleware.'),
cfg.IntOpt('default_api_return_limit',
min=1,
default=100,
help='Default maximum number of items returned by API request.'
),
]
CONF.register_opts(OPTS)
CONF.register_opts(API_OPTS, group='api')
def setup_app(pecan_config=None):
# FIXME: Replace DBHook with a hooks.TransactionHook
app_hooks = [hooks.ConfigHook(),
hooks.DBHook(),
hooks.NotifierHook(),
hooks.TranslationHook()]
pecan_config = pecan_config or {
"app": {
'root': 'ceilometer.api.controllers.root.RootController',
'modules': ['ceilometer.api'],
}
}
pecan.configuration.set_config(dict(pecan_config), overwrite=True)
app = pecan.make_app(
pecan_config['app']['root'],
debug=CONF.api.pecan_debug,
hooks=app_hooks,
wrap_app=middleware.ParsableErrorMiddleware,
guess_content_type_from_ext=False
)
return app
def load_app():
# Build the WSGI app
cfg_file = None
cfg_path = cfg.CONF.api_paste_config
if not os.path.isabs(cfg_path):
cfg_file = CONF.find_file(cfg_path)
elif os.path.exists(cfg_path):
cfg_file = cfg_path
if not cfg_file:
raise cfg.ConfigFilesNotFoundError([cfg.CONF.api_paste_config])
LOG.info("Full WSGI config used: %s" % cfg_file)
return deploy.loadapp("config:" + cfg_file)
def app_factory(global_config, **local_conf):
return setup_app()