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

third_party/gsutil/third_party/protorpc/demos/tunes_db/client/fetch_descriptor.py

Index: third_party/gsutil/third_party/protorpc/demos/tunes_db/client/fetch_descriptor.py
diff --git a/third_party/gsutil/third_party/protorpc/demos/tunes_db/client/fetch_descriptor.py b/third_party/gsutil/third_party/protorpc/demos/tunes_db/client/fetch_descriptor.py
new file mode 100755
index 0000000000000000000000000000000000000000..0db4864f8f4337f057852595d0a845dd0b7dab7d
--- /dev/null
+++ b/third_party/gsutil/third_party/protorpc/demos/tunes_db/client/fetch_descriptor.py
@@ -0,0 +1,102 @@
+#!/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.
+#
+
+"""Boot-strap development by fetching package set from service.
+
+This script fetches a protobuf encoded FileSet from get_file_set
+method of a service.
+"""
+
+__author__ = 'rafek@google.com (Rafe Kaplan)'
+
+import optparse
+import os
+import sys
+import urllib2
+
+from protorpc import protobuf
+from protorpc import protojson
+from protorpc import registry
+from protorpc import transport
+
+
+def parse_options(argv):
+  """Parse options.
+
+  Args:
+    argv: List of original unparsed options.
+
+  Returns:
+    Options object as parsed by optparse.
+  """
+  program = os.path.split(__file__)[-1]
+  parser = optparse.OptionParser(usage='%s [options]' % program)
+
+  parser.add_option('-o', '--output',
+                    dest='output',
+                    help='Write descriptor to FILE.',
+                    metavar='FILE',
+                    default='music_service.descriptor')
+
+  parser.add_option('-r', '--registry_path',
+                    dest='registry_path',
+                    help='Path to registry service.',
+                    metavar='REGISTRY_PATH',
+                    default='/protorpc')
+
+  parser.add_option('-s', '--server',
+                    dest='server',
+                    help='Tunes DB server.',
+                    metavar='SERVER',
+                    default='tunes-db.appspot.com')
+
+  options, args = parser.parse_args(argv)
+
+  if args:
+    parser.print_help()
+    sys.exit(1)
+
+  return options
+
+
+def main(argv):
+  options = parse_options(argv[1:])
+
+  registry_url =  'http://%s%s' % (options.server,
+                                   options.registry_path)
+
+  http_transport = transport.HttpTransport(registry_url, protocol=protojson)
+  remote_registry = registry.RegistryService.Stub(http_transport)
+
+  # Get complete list of services.
+  services = remote_registry.services()
+
+  # Get file set for all services on server.
+  get_file_set = registry.GetFileSetRequest()
+  get_file_set.names = [service.name for service in services.services]
+  file_set = remote_registry.get_file_set(get_file_set).file_set
+
+  # Save file sets to disk.
+  output = open(options.output, 'wb')
+  try:
+    output.write(protobuf.encode_message(file_set))
+  finally:
+    output.close()
+
+
+if __name__ == '__main__':
+  main(sys.argv)