Add a huge bunch of docstrings

lib/tfw/networking/event_handlers/server_connector.py

@@ -24,18 +24,30 @@ class ServerDownlinkConnector(ZMQConnectorBase):
 
 
 class ServerUplinkConnector(ZMQConnectorBase):
+    """
+    Class capable of sending messages to the TFW server and event handlers.
+    """
     def __init__(self, zmq_context=None):
         super(ServerUplinkConnector, self).__init__(zmq_context)
         self._zmq_push_socket = self._zmq_context.socket(zmq.PUSH)
         self._zmq_push_socket.connect('tcp://localhost:{}'.format(TFWENV.RECEIVER_PORT))
 
     def send_to_eventhandler(self, message):
+        """
+        Send a message to an event handler.
+        :param message: JSON message you want to send
+        :param message['key']: key of event handler you want to address
+        """
         nested_message = {'key': message['key'], 'data': message.pop('data')}
         message['key'] = 'mirror'
         message['data'] = nested_message
         self.send(message)
 
     def send(self, message):
+        """
+        Send a message to the TFW server
+        :param message: JSON message you want to send
+        """
         self._zmq_push_socket.send_multipart(serialize_tfw_msg(message))
 
 

lib/tfw/networking/message_sender.py

@@ -7,11 +7,20 @@ from tfw.networking.event_handlers import ServerUplinkConnector
 
 
 class MessageSender:
+    """
+    Provides a mechanism to send messages to our frontend messaging component which
+    displays messages with the key "message".
+    """
     def __init__(self, custom_key: str = None):
         self.server_connector = ServerUplinkConnector()
         self.key = custom_key or 'message'
 
     def send(self, originator, message):
+        """
+        Sends a message to the key specified in __init__.
+        :param originator: name of sender to be displayed on the frontend
+        :param message: message to send
+        """
         data = {
             'originator': originator,
             'timestamp': datetime.now().isoformat(),

lib/tfw/networking/server/tfw_server.py

@@ -15,7 +15,15 @@ LOG = logging.getLogger(__name__)
 
 
 class TFWServer:
+    """
+    This class handles the proxying of messages between the frontend and event handers.
+    It proxies messages from the "/ws" route to all event handlers subscribed to a ZMQ
+    SUB socket. It also manages an FSM you can define as a constructor argument.
+    """
     def __init__(self, fsm_type):
+        """
+        :param fsm_type: the type of FSM you want TFW to use
+        """
         self._fsm = fsm_type()
         self._fsm_updater = FSMUpdater(self._fsm)
         self._fsm_manager = FSMManager(self._fsm)