make version of ts_mon compatible with appengine

appengine/chromium_build_logs/third_party/oauth2client/file.py

Index: appengine/chromium_build_logs/third_party/oauth2client/file.py
diff --git a/appengine/chromium_build_logs/third_party/oauth2client/file.py b/appengine/chromium_build_logs/third_party/oauth2client/file.py
index d71e8883dafeae8a2a6030415ad069dfd3f7c8f7..9d0ae7fabf2f52df552973f17b1ec39cf3cb5ee7 100644
--- a/appengine/chromium_build_logs/third_party/oauth2client/file.py
+++ b/appengine/chromium_build_logs/third_party/oauth2client/file.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2010 Google Inc.
+# Copyright 2014 Google Inc. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -21,12 +21,14 @@ credentials.
 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
 
 import os
-import stat
 import threading
 
-from anyjson import simplejson
-from client import Storage as BaseStorage
-from client import Credentials
+from oauth2client.client import Credentials
+from oauth2client.client import Storage as BaseStorage
+
+
+class CredentialsFileSymbolicLinkError(Exception):
+  """Credentials files must not be symbolic links."""
 
 
 class Storage(BaseStorage):
@@ -36,6 +38,11 @@ class Storage(BaseStorage):
     self._filename = filename
     self._lock = threading.Lock()
 
+  def _validate_file(self):
+    if os.path.islink(self._filename):
+      raise CredentialsFileSymbolicLinkError(
+          'File: %s is a symbolic link.' % self._filename)
+
   def acquire_lock(self):
     """Acquires any lock necessary to access this Storage.
 
@@ -55,8 +62,12 @@ class Storage(BaseStorage):
 
     Returns:
       oauth2client.client.Credentials
+
+    Raises:
+      CredentialsFileSymbolicLinkError if the file is a symbolic link.
     """
     credentials = None
+    self._validate_file()
     try:
       f = open(self._filename, 'rb')
       content = f.read()
@@ -79,21 +90,33 @@ class Storage(BaseStorage):
     simple version of "touch" to ensure the file has been created.
     """
     if not os.path.exists(self._filename):
-      old_umask = os.umask(0177)
+      old_umask = os.umask(0o177)
       try:
         open(self._filename, 'a+b').close()
       finally:
         os.umask(old_umask)
 
-
   def locked_put(self, credentials):
     """Write Credentials to file.
 
     Args:
       credentials: Credentials, the credentials to store.
+
+    Raises:
+      CredentialsFileSymbolicLinkError if the file is a symbolic link.
     """
 
     self._create_file_if_needed()
-    f = open(self._filename, 'wb')
+    self._validate_file()
+    f = open(self._filename, 'w')
     f.write(credentials.to_json())
     f.close()
+
+  def locked_delete(self):
+    """Delete Credentials file.
+
+    Args:
+      credentials: Credentials, the credentials to store.
+    """
+
+    os.unlink(self._filename)