137 lines
4.0 KiB
Python
137 lines
4.0 KiB
Python
# 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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"""WSGI script for Placement API
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WSGI handler for running Placement API under Apache2, nginx, gunicorn etc.
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"""
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import logging as py_logging
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import os
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import os.path
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_middleware import cors
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from oslo_policy import opts as policy_opts
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from oslo_utils import importutils
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import pbr.version
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from placement import conf
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from placement import db_api
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from placement import deploy
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profiler = importutils.try_import('osprofiler.opts')
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CONFIG_FILE = 'placement.conf'
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# The distribution name is required here, not package.
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version_info = pbr.version.VersionInfo('openstack-placement')
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def setup_logging(config):
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# Any dependent libraries that have unhelp debug levels should be
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# pinned to a higher default.
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extra_log_level_defaults = [
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'routes=INFO',
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]
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logging.set_defaults(default_log_levels=logging.get_default_log_levels() +
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extra_log_level_defaults)
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logging.setup(config, 'placement')
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py_logging.captureWarnings(True)
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def _get_config_files(env=None):
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"""Return a list of one file or None describing config location.
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If None, that means oslo.config will look in the default locations
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for a config file.
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"""
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if env is None:
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env = os.environ
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dirname = env.get('OS_PLACEMENT_CONFIG_DIR', '').strip()
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if dirname:
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return [os.path.join(dirname, CONFIG_FILE)]
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else:
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return None
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def _parse_args(config, argv, default_config_files):
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# register placement's config options
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conf.register_opts(config)
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if profiler:
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profiler.set_defaults(config)
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_set_middleware_defaults()
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# This is needed so we can check [oslo_policy]/enforce_scope in the
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# deploy module.
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policy_opts.set_defaults(config)
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config(argv[1:], project='placement',
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version=version_info.version_string(),
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default_config_files=default_config_files)
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def _set_middleware_defaults():
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"""Update default configuration options for oslo.middleware."""
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cors.set_defaults(
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allow_headers=['X-Auth-Token',
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'X-Openstack-Request-Id',
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'X-Identity-Status',
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'X-Roles',
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'X-Service-Catalog',
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'X-User-Id',
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'X-Tenant-Id'],
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expose_headers=['X-Auth-Token',
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'X-Openstack-Request-Id',
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'X-Subject-Token',
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'X-Service-Token'],
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allow_methods=['GET',
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'PUT',
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'POST',
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'DELETE',
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'PATCH']
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)
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def init_application():
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# initialize the config system
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conffiles = _get_config_files()
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config = cfg.ConfigOpts()
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conf.register_opts(config)
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# This will raise cfg.RequiredOptError when a required option is not set
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# (notably the database connection string). We want this to be a hard fail
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# that prevents the application from starting. The error will show up in
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# the wsgi server's logs.
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_parse_args(config, [], default_config_files=conffiles)
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# initialize the logging system
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setup_logging(config)
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# configure database
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db_api.configure(config)
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# dump conf at debug if log_options
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if config.log_options:
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config.log_opt_values(
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logging.getLogger(__name__),
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logging.DEBUG)
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# build and return our WSGI app
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return deploy.loadapp(config)
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