Pass scope, the cluster name, instead of the name, which is the instance name, to the callback.

helpers/postgresql.py

@@ -38,6 +38,7 @@ class Postgresql:
     def __init__(self, config):
         self.config = config
         self.name = config['name']
+        self.scope = config['scope']
         self.listen_addresses, self.port = config['listen'].split(':')
         self.data_dir = config['data_dir']
         self.replication = config['replication']
@@ -250,7 +251,7 @@ class Postgresql:
             except psycopg2.OperationalError as e:
                 logger.warning("unable to perform {0} action, cannot obtain the cluster role: {1}".format(cb_name, e))
                 return False
-        name = self.name
+        name = self.scope
         try:
             role = "master" if is_leader else "replica"
             subprocess.Popen(shlex.split(os.path.abspath(cmd))+[cb_name, role, name])

scripts/aws.py

@@ -1,3 +1,5 @@
+#!/usr/bin/python
+
 import logging
 import requests
 from requests.exceptions import RequestException
@@ -71,12 +73,12 @@ class AWSConnection:
 
 
 if __name__ == '__main__':
-    if len(sys.argv) != 3:
+    if len(sys.argv) != 4:
         print ("Usage: {0} action role name".format(sys.argv[0]))
-        return 1
+        sys.exit(1)
     action, role, name = sys.argv[1:]
     if action in ('on_start', 'on_stop', 'on_role_change'):
         aws = AWSConnection({'cluster_name': name})
         aws.on_role_change(role)
-        return 0
-    return 2
+        sys.exit(0)
+    sys.exit(2)