init db/http/mqtt

frigate/mqtt.py

@@ -0,0 +1,24 @@
+import paho.mqtt.client as mqtt
+
+def create_mqtt_client(host: str, port: int, client_id: str, topic_prefix: str, user: str, password: str):
+    client = mqtt.Client(client_id=client_id)
+    def on_connect(client, userdata, flags, rc):
+        # TODO: use logging library
+        print("On connect called")
+        if rc != 0:
+            if rc == 3:
+                print ("MQTT Server unavailable")
+            elif rc == 4:
+                print ("MQTT Bad username or password")
+            elif rc == 5:
+                print ("MQTT Not authorized")
+            else:
+                print ("Unable to connect to MQTT: Connection refused. Error code: " + str(rc))
+        client.publish(topic_prefix+'/available', 'online', retain=True)       
+    client.on_connect = on_connect
+    client.will_set(topic_prefix+'/available', payload='offline', qos=1, retain=True)
+    if not user is None:
+        client.username_pw_set(user, password=password)
+    client.connect(host, port, 60)
+    client.loop_start()
+    return client