| #!/usr/bin/env python |
| # |
| # Copyright 2010 Google 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. |
| # |
| |
| """Quota service main handler. |
| |
| Hosts a QuotaServer ProtoRPC service. This application is intended for use |
| as a backend server only. The service is configured based on a |
| configuration file loaded from a quotas.json in the backend application |
| directory. The quotas.json file is a JSON encoded |
| quotas.service.QuotaConfig ProtoRPC message. |
| """ |
| |
| from __future__ import with_statement |
| |
| import os |
| import logging |
| |
| from google.appengine.ext import webapp |
| from google.appengine.ext.webapp import util |
| |
| from protorpc import protojson |
| from protorpc.webapp import service_handlers |
| |
| from quotas import services |
| |
| APP_DIR = os.path.dirname(os.path.dirname(os.environ['PATH_TRANSLATED'])) |
| QUOTA_CONFIG_PATH = os.path.join(APP_DIR, 'quotas.json') |
| |
| |
| def load_quota_config(quota_config_path=QUOTA_CONFIG_PATH): |
| """Load quota configuration from from file. |
| |
| Args: |
| quota_config_path: Quota to configuration file. Contents of file must be |
| a JSON encoded ProtoRPC message of the format defined by |
| quota.services.QuotaConfig. |
| |
| Returns: |
| quota.services.QuotaConfig instance with contents parsed from quota file. |
| """ |
| with open(quota_config_path) as quota_config_file: |
| encoded_config = quota_config_file.read() |
| return protojson.decode_message(services.QuotaConfig, encoded_config) |
| |
| service_mappings = service_handlers.service_mapping( |
| [ |
| ('/quota-service', |
| services.QuotaService.new_factory(load_quota_config(), {})), |
| ]) |
| |
| application = webapp.WSGIApplication(service_mappings, debug=True) |
| |
| |
| def main(): |
| util.run_wsgi_app(application) |
| |
| |
| if __name__ == '__main__': |
| main() |