don't remove files during backu period

cleaning/remove_expired_files.py

@@ -2,10 +2,15 @@ import logging
 import argparse
 import os
 import re
+import datetime
 
 import redis
 
 
+BACKUP_START_TIME = datetime.time(1, 30, 0)
+BACKUP_END_TIME = datetime.time(3, 30, 0)
+
+
 def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument("-v", "--verbose", action="store_true",
@@ -57,6 +62,11 @@ def locate_file_with_id(args, file_id):
     return None
 
 
+def delete_files(args, file_ids):
+    for file_id in file_ids:
+        delete_file(args, file_id)
+
+
 def delete_file(args, file_id):
     logging.info('File with id %s will be deleted', file_id)
 
@@ -76,8 +86,17 @@ def delete_file(args, file_id):
         os.remove(file_path)
 
 
+def is_in_backup_period():
+    now = datetime.datetime.now().time()
+    if BACKUP_START_TIME <= BACKUP_END_TIME:
+        return BACKUP_START_TIME <= now <= BACKUP_END_TIME
+    else:
+        return BACKUP_START_TIME <= now or now <= BACKUP_END_TIME
+
+
 def main():
     args = parse_args()
+    file_ids_to_delete = []
 
     configure_logging(args)
     redis_client, pubsub = create_redis_client(args)
@@ -97,7 +116,9 @@ def main():
             logging.debug('Event of type %s ignored', channel)
             continue
 
-        delete_file(args, data)
+        file_ids_to_delete.append(data)
+        if not is_in_backup_period():
+            delete_files(args, file_ids_to_delete)
 
 
 if __name__ == "__main__":