Minor change for easy log truncate logic

README.md

@@ -82,7 +82,9 @@ Up to now I could test it with the following hardware components:
  But as long as I see it will work with all other devices of the same family in the same way. Please check the mappingfile for the *knowndevices* which should work.
 
  # Latest release notes
+ - Simple cut off log file after one day
  - The heating control integration has place for improvement like the handling with units of measure.
  - The code itself is a little bit blown now. It needs some re-design.
  - Periodical status updates via MQTT are integrated.
- - Heating control as a new type is integrated.
+ - Heating control as a new type is integrated.
+

hp2mqtt.py

@@ -298,7 +298,10 @@ def on_set_message(client, userdata, message):
 device_mapping = {}
 log_file_name = "log/hp2mqtt.log"
 dev_file_name = "data/device_info.json"
-client = mqttClient.Client()   
+client = mqttClient.Client()  
+logfile_next_check_date = datetime.datetime.utcnow() + datetime.timedelta(days=1)
+logfile_countdown_default = 14400;
+logfile_check_countdown = logfile_countdown_default
 
 mqtt_connected = False
 mqtt_broker_address= "localhost"
@@ -407,10 +410,24 @@ def on_set_message(client, userdata, message):
 try:
     while True:
         time.sleep(1)
+
+        # main routine
         mqtt_update_countdown -= 1
         if mqtt_update_countdown <= 0:
             try_deviceUpdate()
             mqtt_update_countdown = mqtt_update_sec
+
+        # logfile check
+        logfile_check_countdown -= 1       
+        if logfile_check_countdown <= 0:
+            log_message("Check logfile age. Now = %s --> next truncate %s" % (datetime.datetime.utcnow(), logfile_next_check_date))               
+            logfile_check_countdown = logfile_countdown_default
+            if (datetime.datetime.utcnow() > logfile_next_check_date):                
+                logfile_next_check_date = datetime.datetime.utcnow() + datetime.timedelta(days=1)                
+                log_file.close
+                log_file = open(log_file_name, "w")
+                log_message("Truncate logfile now: %s" % (datetime.datetime.utcnow()))
+
 
 except KeyboardInterrupt:
     log_message("Exiting")