Added session-autocleaner, changed some script filenames, changed shebang of manage.py #16

scripts/_session-autocleaner.py

@@ -0,0 +1,55 @@
+#!./venv/bin/python3
+
+# This script clears expired sessions in a regular interval
+
+import os
+
+from argparse import ArgumentParser
+from atexit import register as register_exithandler
+from pathlib import Path
+from subprocess import Popen
+from time import sleep
+from datetime import datetime
+
+
+current_proc = None
+
+
+def exithandler():
+    if current_proc is not None:
+        seconds_waited = 0
+        while current_proc.poll() is None:
+            # wait for 10 seconds to quit session cleaner
+            if seconds_waited >= 10:
+                current_proc.terminate()
+                break
+            # is still running
+            sleep(1)
+            seconds_waited += 1
+    print("Stopped session-autocleaner.")
+
+
+if __name__ == "__main__":
+    try:
+        argp = ArgumentParser()
+        argp.add_argument("interval", help="The interval in minutes", type=int)
+        args = argp.parse_args()
+        os.chdir(str(Path(__file__).parent.parent))
+        print(f"Started session-autocleaner with an interval of {args.interval} minute(s)")
+        interval = args.interval * 60
+        # register exithandler that cleans up stuff
+        register_exithandler(exithandler)
+        # main loop
+        while True:
+            if current_proc is not None:
+                # wait for last iteration
+                while current_proc.poll() is None:
+                    # is still running
+                    print("Last cleanup is still running, waiting before clearing sessions...")
+                    sleep(1)
+            print(f"Clearing expired sessions at {datetime.now()}...")
+            current_proc = Popen(
+                ["./manage.py", "clearsessions"])
+            sleep(interval)
+    except KeyboardInterrupt:
+        exit()