Use message factory for slam streamer

Messaging/message_factory.py

@@ -1,25 +1,7 @@
 import zmq
 
 
-class MessageFactory():
-
-    def getZmqPubSubStreamer(self, topic):
-        '''
-        Not thread-safe. Always get this inside the thread/process where you intend
-        to use it. 
-        '''
-        return ZmqPubSubStreamer(topic)
-
-
-class Streamer():
-    def send_message(self, message_bytes):
-        raise NotImplementedError
-
-    def send_message_topic(self, topic, message_bytes):
-        raise NotImplementedError
-
-
-class ZmqPubSubStreamer(Streamer):
+class ZmqPubSubStreamer:
     '''
     Not thread-safe. Always get this inside the thread/process where you intend
     to use it. 
@@ -29,7 +11,9 @@ class ZmqPubSubStreamer(Streamer):
         # Should create the socket here always, since zmq is not thread safe.
         # Hopefully whoever uses this is not stupid enough to create it then
         # pass it into a thread.
-        pass
+        self._socket = zmq.Context.instance().socket(zmq.PUB)
+        print('Starting socket with address: ' + 'tcp://*:' + str(port))
+        self._socket.bind("tcp://*:" + str(port))
 
     def send_message(self, message):
         '''
@@ -37,15 +21,23 @@ class ZmqPubSubStreamer(Streamer):
         ----
         message: A message type that has the serialise() method.
         '''
-        pass
+        self.send_message_topic("", message)
 
     def send_message_topic(self, topic, message):
-        pass
+        self._socket.send_multipart([bytes(topic), message.serialise()])
 
 
-class BluetoothStreamer(Streamer):
+class BluetoothStreamer:
     def __init__(self):
         pass
 
     def send_message(self, message_bytes):
         pass
+
+
+def getZmqPubSubStreamer(port):
+    '''
+    Not thread-safe. Always get this inside the thread/process where you intend
+    to use it. 
+    '''
+    return ZmqPubSubStreamer(port)