Add "RUN_ONLY_ONCE" option

.env.sample

@@ -9,6 +9,9 @@ DEBUG = "False"
 ## Debugging level, "info" is default, "debug" is more verbose
 DEBUG_LEVEL = "info"
 
+## If set to true then the script will only run once and then exit
+RUN_ONLY_ONCE = "False"
+
 ## How often to run the script in seconds
 SLEEP_DURATION = "3600"
 
@@ -27,7 +30,7 @@ LOGFILE = "log.log"
 ## Comma separated for multiple options
 #BLACKLIST_LIBRARY = ""
 #WHITELIST_LIBRARY = ""
-#BLACKLIST_LIBRARY_TYPE = "" 
+#BLACKLIST_LIBRARY_TYPE = ""
 #WHITELIST_LIBRARY_TYPE = ""
 #BLACKLIST_USERS = ""
 WHITELIST_USERS = "testuser1,testuser2"

src/main.py

@@ -365,6 +365,7 @@ def main_loop():
 
 
 def main():
+    run_only_once = str_to_bool(os.getenv("RUN_ONLY_ONCE", "False"))
     sleep_duration = float(os.getenv("SLEEP_DURATION", "3600"))
     times = []
     while True:
@@ -377,6 +378,9 @@ def main():
             if len(times) > 0:
                 logger(f"Average time: {sum(times) / len(times)}", 0)
 
+            if run_only_once:
+                break
+
             logger(f"Looping in {sleep_duration}")
             sleep(sleep_duration)
 
@@ -389,6 +393,9 @@ def main():
 
             logger(traceback.format_exc(), 2)
 
+            if run_only_once:
+                break
+
             logger(f"Retrying in {sleep_duration}", log_type=0)
             sleep(sleep_duration)