Add credentials to RabbitMQ connection

Signed-off-by: Francesco Pace <pace.francesco.g@gmail.com>

zoe_lib/applications.py

@@ -198,7 +198,7 @@ def _storage_plugin_check(data):
 
 
 def _channel_check(data):
-    required_keys = ['protocol', 'host']
+    required_keys = ['protocol', 'host', 'username', 'password']
     for k in required_keys:
         if k not in data:
             raise InvalidApplicationDescription(msg="Missing required key: %s" % k)

zoe_master/plugins/connectors.py

@@ -17,12 +17,15 @@ import pika
 
 
 class RabbitMQ:
-    def __init__(self, host):
+    def __init__(self, username, password, host):
+        self.username = username
+        self.password = password
         self.host = host
         self.channel = None
 
     def open_connection(self):
-        connection = pika.BlockingConnection(pika.ConnectionParameters(self.host))
+        credentials = pika.PlainCredentials(self.username, self.password)
+        connection = pika.BlockingConnection(pika.ConnectionParameters(self.host, credentials=credentials))
         self.channel = connection.channel()
 
     def send_message(self, queue, message):

zoe_master/plugins/storage/crystal.py

@@ -23,7 +23,7 @@ class Crystal:
     def transmit_policy(self, tenant, policy):
         message = "{}:{}".format(tenant, policy)
         if self.channel['protocol'] is 'rabbitmq':
-            rmq = RabbitMQ(self.channel['host'])
+            rmq = RabbitMQ(self.channel['username'], self.channel['password'], self.channel['host'])
             rmq.open_connection()
             rmq.send_message(self.channel['queue'], message)
             rmq.close_connection()