blazar/blazar/api/v1/app.py

98 lines
2.9 KiB
Python

# Copyright (c) 2013 Mirantis 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 eventlet
eventlet.monkey_patch(
os=True, select=True, socket=True, thread=True, time=True)
import flask
from keystonemiddleware import auth_token
from oslo_config import cfg
from oslo_log import log as logging
from oslo_middleware import debug
from stevedore import enabled
from werkzeug import exceptions as werkzeug_exceptions
from blazar.api.v1 import utils as api_utils
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
CONF.import_opt('log_exchange', 'blazar.config')
def make_json_error(ex):
if isinstance(ex, werkzeug_exceptions.HTTPException):
status_code = ex.code
description = ex.description
else:
status_code = 500
description = str(ex)
return api_utils.render({'error': status_code,
'error_message': description},
status=status_code)
def version_list():
return api_utils.render({
"versions": [
{"id": "v1.0",
"status": "CURRENT",
"links": [{"href": "{0}v1".format(flask.request.host_url),
"rel": "self"}]
},
],
}, status="300 Multiple Choices")
def make_app():
"""App builder (wsgi).
Entry point for Blazar REST API server.
"""
app = flask.Flask('blazar.api')
app.route('/', methods=['GET'])(version_list)
app.route('/versions', methods=['GET'])(version_list)
LOG.debug("List of plugins: %s", cfg.CONF.manager.plugins)
plugins = cfg.CONF.manager.plugins + ['leases']
extension_manager = enabled.EnabledExtensionManager(
check_func=lambda ext: ext.name in plugins,
namespace='blazar.api.v1.extensions',
invoke_on_load=False
)
for ext in extension_manager.extensions:
bp = ext.plugin()
app.register_blueprint(bp, url_prefix=bp.url_prefix)
for code in werkzeug_exceptions.default_exceptions:
app.register_error_handler(code, make_json_error)
if cfg.CONF.debug and not cfg.CONF.log_exchange:
LOG.debug('Logging of request/response exchange could be enabled '
'using flag --log_exchange')
if cfg.CONF.log_exchange:
app.wsgi_app = debug.Debug.factory(app.config)(app.wsgi_app)
app.wsgi_app = auth_token.filter_factory(app.config)(app.wsgi_app)
return app