noise: adds docstrings to plugin methods

noise/noise.py

@@ -119,6 +119,10 @@ def deliver(node_id, payload, amt, payment_hash, max_attempts=5):
 
 @plugin.async_method('sendmsg')
 def sendmsg(node_id, msg, plugin, request, pay=None, **kwargs):
+    """Sends a chat message.
+
+    First paramter is the message payload as a string.
+    """
     timestamp = struct.pack("!Q", int(time.time() * 1000))
     payload = TlvPayload()
     payload.add_field(TLV_NOISE_MESSAGE, msg.encode('UTF-8'))
@@ -151,6 +155,11 @@ def sendmsg(node_id, msg, plugin, request, pay=None, **kwargs):
 
 @plugin.async_method('recvmsg')
 def recvmsg(plugin, request, last_id=None, **kwargs):
+    """Receives a chat message.
+
+    Returns a `concurrent.futures.Future`.
+    Optional parameter `last_id` can be supplied to return an older message.
+    """
     next_id = int(last_id) + 1 if last_id is not None else len(plugin.messages)
     if next_id <= len(plugin.messages):
         res = plugin.messages[int(last_id)].to_dict()