[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/third_party/protorpc/demos/quotas/backend/quotas/main.py

Index: third_party/gsutil/third_party/protorpc/demos/quotas/backend/quotas/main.py
diff --git a/third_party/gsutil/third_party/protorpc/demos/quotas/backend/quotas/main.py b/third_party/gsutil/third_party/protorpc/demos/quotas/backend/quotas/main.py
new file mode 100755
index 0000000000000000000000000000000000000000..4717ca327b761a39190e16237ac03cd90a99bbe1
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+++ b/third_party/gsutil/third_party/protorpc/demos/quotas/backend/quotas/main.py
@@ -0,0 +1,73 @@
+#!/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()