Adding a /write handle on an SID to be able to write multiple attributes to a device (example MID and VOL for sound play)

src/main.py

@@ -67,10 +67,9 @@ def process_mqtt_messages(gateway, client):
 			_LOGGER.debug("data from mqtt: " + format(data))
 
 			sid = data.get("sid", None)
-			param = data.get("param", None)
-			value = data.get("value", None)
+			values = data.get("values", dict())
 
-			resp = gateway.write_to_hub(sid, param, value)
+			resp = gateway.write_to_hub(sid, **values)
 			client._queue.task_done()
 		except Exception as e:
 			_LOGGER.error('Error while sending from mqtt to gateway: ', str(e))
@@ -87,6 +86,7 @@ if __name__ == "__main__":
 	client.connect()
 	#only this devices can be controlled from MQTT
 	client.subscribe("gateway", "+", "+", "set")
+	client.subscribe("gateway", "+", "write", None)
 	client.subscribe("plug", "+", "status", "set")
 
 	gateway = XiaomiHub(gateway_pass)

src/mqtt.py

@@ -3,6 +3,7 @@ import os
 import logging
 from queue import Queue
 from threading import Thread
+import json
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -54,8 +55,10 @@ class Mqtt:
 		t1.start()
 		self._threads.append(t1)
 
-	def subscribe(self, model="+", name="+", prop="+", command="set"):
-		topic = self.prefix + "/" + model + "/" + name + "/" + prop + "/" + command
+	def subscribe(self, model="+", name="+", prop="+", command=None):
+		topic = self.prefix + "/" + model + "/" + name + "/" + prop
+		if command is not None:
+			topic +=  "/" + command
 		_LOGGER.info("Subscibing to " + topic + ".")
 		self._client.subscribe(topic)
 
@@ -94,17 +97,21 @@ class Mqtt:
 	def _mqtt_process_message(self, client, userdata, msg):
 		_LOGGER.info("Processing message in " + str(msg.topic) + ": " + str(msg.payload) + ".")
 		parts = msg.topic.split("/")
-		if (len(parts) != 5):
+		if len(parts) < 4:
+			# should we return an error message ?
 			return
+
 		model = parts[1]
 		query_sid = parts[2] #sid or name part
 		param = parts[3] #param part
-		value = (msg.payload).decode('utf-8')
-		if self._is_int(value):
-			value = int(value)
+		method = None
+		if len(parts) > 4:
+			method = parts[4]
+		else:
+			method = parts[3]
+
 		name = "" # we will find it next
 		sid = query_sid
-
 		isFound = False
 		for current_sid in self._sids:
 			if (current_sid == None):
@@ -124,13 +131,31 @@ class Mqtt:
 				continue
 
 		if isFound == False:
+			# should we return an error message ?
 			return
 
+		if method == "set":
+			# use single value set method
+
+			value = (msg.payload).decode('utf-8')
+			if self._is_int(value):
+				value = int(value)
+
 			# fix for rgb format
 			if (param == "rgb" and "," in str(value)):
 				value = self._color_rgb_to_xiaomi(value)
 
-		data = {'sid': sid, 'model': model, 'name': name, 'param':param, 'value':value}
+			# prepare values dict
+			data = {'sid': sid, 'model': model, 'name': name,
+					'values': {param: value}}
+			# put in process queuee
+			self._queue.put(data)
+		
+		elif method == "write":
+			# use raw write method to the sensor, we expect a jsonified dict here.
+			values = json.loads((msg.payload).decode('utf-8'))
+			data = {'sid': sid, 'model': model, 'name': name,
+					'values': values}
 			# put in process queuee
 			self._queue.put(data)
 

src/xiaomihub.py

@@ -149,14 +149,14 @@ class XiaomiHub:
             _LOGGER.error("Cannot connect to Gateway")
             socket.close()
 
-    def write_to_hub(self, sid, data_key, datavalue):
+    def write_to_hub(self, sid, **values):
         key = self._get_key()
-        if type(datavalue) == int:
-            datavalue_formatted = str(datavalue)
-        else:
-            datavalue_formatted = '"' + datavalue + '"'
-        cmd = '{ "cmd":"write","sid":"' + sid + '","data":"{"' + data_key + '":' + datavalue_formatted + ',"key":"' + key + '"}}'
-        return self._send_cmd(cmd, "write_ack")     
+        cmd = {
+            "cmd": "write",
+            "sid": sid,
+            "data": dict(key=key, **values)
+        }
+        return self._send_cmd(json.dumps(cmd), "write_ack")     
 
     def get_from_hub(self, sid):
         cmd = '{ "cmd":"read","sid":"' + sid + '"}'