113 lines
3.3 KiB
Python
113 lines
3.3 KiB
Python
#
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# Copyright 2012 New Dream Network, LLC (DreamHost)
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# Copyright 2015-2016 Red Hat, Inc.
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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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import os
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import uuid
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from oslo_config import cfg
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from oslo_log import log
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from paste import deploy
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import pecan
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from ceilometer.api import hooks
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from ceilometer.api import middleware
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LOG = log.getLogger(__name__)
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OPTS = [
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cfg.StrOpt('api_paste_config',
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default="api_paste.ini",
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help="Configuration file for WSGI definition of API."
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),
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]
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API_OPTS = [
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cfg.IntOpt('default_api_return_limit',
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min=1,
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default=100,
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help='Default maximum number of items returned by API request.'
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),
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]
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def setup_app(pecan_config=None, conf=None):
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if conf is None:
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raise RuntimeError("No configuration passed")
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# FIXME: Replace DBHook with a hooks.TransactionHook
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app_hooks = [hooks.ConfigHook(conf),
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hooks.DBHook(conf),
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hooks.NotifierHook(conf),
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hooks.TranslationHook()]
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pecan_config = pecan_config or {
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"app": {
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'root': 'ceilometer.api.controllers.root.RootController',
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'modules': ['ceilometer.api'],
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}
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}
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pecan.configuration.set_config(dict(pecan_config), overwrite=True)
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app = pecan.make_app(
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pecan_config['app']['root'],
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hooks=app_hooks,
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wrap_app=middleware.ParsableErrorMiddleware,
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guess_content_type_from_ext=False
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)
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return app
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# NOTE(sileht): pastedeploy uses ConfigParser to handle
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# global_conf, since python 3 ConfigParser doesn't
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# allow to store object as config value, only strings are
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# permit, so to be able to pass an object created before paste load
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# the app, we store them into a global var. But the each loaded app
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# store it's configuration in unique key to be concurrency safe.
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global APPCONFIGS
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APPCONFIGS = {}
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def load_app(conf):
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global APPCONFIGS
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# Build the WSGI app
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cfg_file = None
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cfg_path = conf.api_paste_config
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if not os.path.isabs(cfg_path):
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cfg_file = conf.find_file(cfg_path)
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elif os.path.exists(cfg_path):
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cfg_file = cfg_path
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if not cfg_file:
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raise cfg.ConfigFilesNotFoundError([conf.api_paste_config])
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configkey = str(uuid.uuid4())
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APPCONFIGS[configkey] = conf
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LOG.info("Full WSGI config used: %s", cfg_file)
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LOG.warning("Note: Ceilometer API is deprecated; use APIs from Aodh"
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" (alarms), Gnocchi (metrics) and/or Panko (events).")
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return deploy.loadapp("config:" + cfg_file,
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global_conf={'configkey': configkey})
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def app_factory(global_config, **local_conf):
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global APPCONFIGS
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conf = APPCONFIGS.get(global_config.get('configkey'))
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return setup_app(conf=conf)
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