Sample python client code for Admin Audit API - first version
diff --git a/samples/audit/audit.py b/samples/audit/audit.py
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+#!/usr/bin/python2.4
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2011 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.
+
+"""Simple command-line sample for Audit API.
+
+Command-line application that retrieves events through the Audit API.
+This works only for Google Apps for Business, Education, and ISP accounts.
+It can not be used for the basic Google Apps product.
+
+Usage:
+  $ python audit.py
+
+You can also get help on all the command-line flags the program understands
+by running:
+
+  $ python audit.py --help
+
+To get detailed log output run:
+
+  $ python audit.py --logging_level=DEBUG
+"""
+
+__author__ = 'rahulpaul@google.com (Rahul Paul)'
+
+import gflags
+import httplib2
+import logging
+import re
+import simplejson
+import sys
+
+from apiclient.discovery import build
+from oauth2client.client import AccessTokenRefreshError
+from oauth2client.client import OAuth2WebServerFlow
+from oauth2client.file import Storage
+from oauth2client.tools import run
+
+FLAGS = gflags.FLAGS
+
+# Set up a Flow object to be used if we need to authenticate. This
+# sample uses OAuth 2.0, and we set up the OAuth2WebServerFlow with
+# the information it needs to authenticate. Note that it is called
+# the Web Server Flow, but it can also handle the flow for native
+# applications <http://code.google.com/apis/accounts/docs/OAuth2.html#IA>
+# When creating credentials for this application be sure to choose an
+# Application type of 'Installed application'.
+FLOW = OAuth2WebServerFlow(
+    client_id='880851855448.apps.googleusercontent.com',
+    client_secret='d8nBjlNBpOMH_LITqz31IMdI',
+    scope='https://www.googleapis.com/auth/apps/reporting/audit.readonly',
+    user_agent='audit-cmdline-sample/1.0')
+
+# The flags module makes defining command-line options easy for
+# applications. Run this program with the '--help' argument to see
+# all the flags that it understands.
+gflags.DEFINE_enum('logging_level', 'ERROR',
+                  ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
+                  'Set the level of logging detail.')
+
+
+def print_activities(activity_list):
+  events = activity_list['items']
+  print '\nRetrieved %d activities.' % len(events)
+  for i in range(len(events)):
+    print '\nEvent %d : %s' % (i, simplejson.JSONEncoder().encode(events[i]))
+  print '\nNext URL : %s' % (activity_list['next'])
+  print '======================================================================'
+
+
+def main(argv):
+  # Let the flags module process the command-line arguments
+  try:
+    argv = FLAGS(argv)
+  except gflags.FlagsError, e:
+    print '%s\nUsage: %s ARGS\n%s' % (e, argv[0], FLAGS)
+    sys.exit(1)
+
+  # Set the logging according to the command-line flag
+  logging.getLogger().setLevel(getattr(logging, FLAGS.logging_level))
+
+  # If the Credentials don't exist or are invalid run through the native client
+  # flow. The Storage object will ensure that if successful the good
+  # Credentials will get written back to a file.
+  storage = Storage('audit.dat')
+  credentials = storage.get()
+  if not credentials or credentials.invalid:
+    credentials = run(FLOW, storage)
+
+  # Create an httplib2.Http object to handle our HTTP requests and authorize it
+  # with our good Credentials.
+  http = httplib2.Http()
+  http = credentials.authorize(http)
+
+  service = build('audit', 'v1', http=http)
+
+  try:
+    activities = service.activities()
+
+    # Retrieve the first two activities
+    print 'Retrieving the first 2 activities...'
+    activity_list = activities.list(
+        applicationId='207535951991', customerId='C01rv1wm7', maxResults='2',
+        actorEmail='admin@enterprise-audit-clientlib.com').execute()
+    print_activities(activity_list)
+
+    # Now retrieve the next 2 events
+    match = re.search('(?<=continuationToken=).+$', activity_list['next'])
+    if match is not None:
+      next_token = match.group(0)
+
+      print '\nRetrieving the next 2 activities...'
+      activity_list = activities.list(
+          applicationId='207535951991', customerId='C01rv1wm7',
+          maxResults='2', actorEmail='admin@enterprise-audit-clientlib.com',
+          continuationToken=next_token).execute()
+      print_activities(activity_list)
+
+  except AccessTokenRefreshError:
+    print ('The credentials have been revoked or expired, please re-run'
+           'the application to re-authorize')
+
+if __name__ == '__main__':
+  main(sys.argv)