add retries for kwin query

client/lux.py

@@ -8,7 +8,7 @@ CUSTOM_RQ_ECHO = 0 # send back wValue and wIndex, for testing comms reliability
 CUSTOM_RQ_RESET = 1 # reset to bootloader
 CUSTOM_RQ_GET = 2 # get ldr value
 
-max_comm_retries = 5;
+max_comm_retries = 5
 
 def is_target_device(dev):
     if dev.manufacturer == "xythobuz.de" and dev.product == "AutoBrightness":

client/window.py

@@ -5,8 +5,10 @@ import subprocess
 from datetime import datetime
 import json
 
+max_comm_retries = 5
+
 # https://unix.stackexchange.com/a/776620
-def query(verbose=False):
+def query_internal(verbose=False):
     dir_path = os.path.abspath(os.path.dirname(__file__))
     file_path = os.path.join(dir_path, "kwin_check.js")
     datetime_now = datetime.now()
@@ -44,6 +46,14 @@ def query(verbose=False):
     msg = result.stdout.decode().rstrip().split("\n")[0][4:]
     return json.loads(msg)
 
+def query(verbose=False):
+    for attempts in range(0, max_comm_retries):
+        try:
+            return query_internal(verbose)
+        except Exception as e:
+            if attempts >= (max_comm_retries - 1):
+                raise e
+
 if __name__ == "__main__":
     info = query()
     print("Name: \"{}\"".format(info["name"]))