Initial commit

utils.py

@@ -0,0 +1,43 @@
+from time import sleep
+import logging
+from collections.abc import Callable
+
+logger = logging.getLogger(__name__)
+
+class Utils:
+
+    @staticmethod
+    def getReconnector(
+        reconnect: Callable[[], None],
+        description: str,
+        minReconnectDelay: int,
+        maxReconnectDelay: int,
+        reconnectAttempts: int,
+        reconnectDelayMultiplier: int,
+        disconnectCallback: Callable[[], None]
+    ):
+        def fn():
+            logger.warn(f"Disconnected from {description}, trying to reconnect")
+            reconnectCount = 0
+            reconnectDelay = minReconnectDelay
+            while (reconnectAttempts < 0 or reconnectCount < reconnectAttempts):
+                sleep(reconnectDelay)
+
+                try:
+                    reconnect()
+                    logging.info(f"Reconnected to {description}")
+                    return
+                except:
+                    reconnectDelay = min(minReconnectDelay, reconnectDelay * reconnectDelayMultiplier)
+                    reconnectCount += 1
+            logger.error(f"Unable to reconnect to {description} after {reconnectCount} attempts, exiting")
+            disconnectCallback()
+        return fn
+    
+    @staticmethod
+    def hexStrToInt(s):
+        # hex string to int
+        i = int(s, 16)
+        if i >= 2**7:
+            i -= 2**8
+        return i