asn expert: add feedback from @kamil-certat

PR #2606

Author: sebix

intelmq/bots/experts/asn_lookup/expert.py

@@ -9,6 +9,7 @@
 import sys
 import bz2
 import requests
+from datetime import datetime, timedelta
 from pathlib import Path
 
 from intelmq import VAR_STATE_PATH
@@ -69,13 +70,18 @@ def process(self):
     def check(parameters):
         database_path = Path(parameters.get('database', ''))
         if not database_path.exists():
-            return [["error", f"File given as parameter 'database' ({database_path!s}) does not exist."]]
+            return [["warning", f"File given as parameter 'database' ({database_path!s}) does not exist. You may need to trigger first downloading manually. See: https://docs.intelmq.org/latest/user/bots/#asn-lookup."]]
         elif not database_path.is_file():
             return [["error", f"Parameter 'database' ({database_path!s}) exists, but is not a file."]]
         try:
             pyasn.pyasn(parameters['database'])
         except Exception as exc:
-            return [["error", f"Error reading database ({database_path!s}): %r." % exc]]
+            return [["error", f"Error reading database ({database_path!s}): {exc!r}."]]
+
+        # Check the age of the database file
+        # use local time zone for both time operations
+        if datetime.now() - datetime.fromtimestamp(database_path.stat().st_mtime) < timedelta(weeks=1):
+            return [["warning", f"Database ({database_path!s}) is older than one week. Check the auto update, see: https://docs.intelmq.org/latest/user/bots/#asn-lookup."]]
 
     @classmethod
     def run(cls, parsed_args=None):