migrate paho.mqtt CallbackAPIVersion to VERSION2 (#225)

ha_addons/ha_addon/rootfs/home/proxy/my_timer.py

@@ -0,0 +1,35 @@
+import asyncio
+import logging
+from itertools import count
+
+
+class Timer:
+    def __init__(self, cb, id_str: str = ''):
+        self.__timeout_cb = cb
+        self.loop = asyncio.get_event_loop()
+        self.tim = None
+        self.id_str = id_str
+        self.exp_count = count(0)
+
+    def start(self, timeout: float) -> None:
+        '''Start timer with timeout seconds'''
+        if self.tim:
+            self.tim.cancel()
+        self.tim = self.loop.call_later(timeout, self.__timeout)
+        logging.debug(f'[{self.id_str}]Start timer')
+
+    def stop(self) -> None:
+        '''Stop timer'''
+        logging.debug(f'[{self.id_str}]Stop timer')
+        if self.tim:
+            self.tim.cancel()
+            self.tim = None
+
+    def __timeout(self) -> None:
+        '''timer expired handler'''
+        logging.debug(f'[{self.id_str}]Timer expired')
+        self.__timeout_cb(next(self.exp_count))
+
+    def close(self) -> None:
+        self.stop()
+        self.__timeout_cb = None