Add a simple LP OpenId reverse lookup utility

Change-Id: Ibe1705bc53a48aa6c23f095ae9118d2d367aea78

tools/lp_openid_lookup

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# Copyright (c) 2016 OpenStack Foundation
+#
+# 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 wrapper for the OpenId reverse lookup method in the LP API,
+# useful when you need to determine the LP account associated with a
+# login.launchpad.net OpenId. Pass the OpenId URL in question as the
+# only command-line parameter, and run this in the gerrit2 homedir on
+# review.openstack.org (or hack it to use your own LP API key instead).
+
+import os
+import sys
+
+from launchpadlib import launchpad
+from launchpadlib import uris
+
+lp = launchpad.Launchpad.login_with(
+    'Gerrit User Sync', uris.LPNET_SERVICE_ROOT,
+    os.path.expanduser('~/.launchpadlib/cache'),
+    credentials_file=os.path.expanduser('~/.launchpadlib/creds'),
+    version='devel')
+print(lp.people.getByOpenIDIdentifier(identifier=sys.argv[1]))