1 files changed, 16 insertions, 1 deletions

diff --git a/warmachine/addons/base.py b/warmachine/addons/base.py
index e605c2c..0a02df7 100644
--- a/warmachine/addons/base.py
+++ b/warmachine/addons/base.py
@@ -3,6 +3,21 @@ import logging
 
 
 class WarMachinePlugin(object):
-    def __init__(self):
+    def __init__(self, *args, **kwargs):
         self._loop = asyncio.get_event_loop()
         self.log = logging.getLogger(self.__class__.__name__)
+
+    def recv_msg(self, *args, **kwargs):
+        """
+        Called when a connection receives a message. Arguments are
+        ``connection`` and ``message``.
+
+        ``connection`` is a :class:`warmachine.connections.base.Connection`
+            object used to interact with the connection to a chat server.
+        ``message`` is a dictionary that contains information about a message
+            that was received on the connection. See
+            :class:`warmachine.connections.base.Connection.read` for more
+            information.
+        """
+        raise NotImplementedError('{} must implement `recv_msg` method'.format(
+            self.__class__.__name__))