Added log output to receipt generation function.

matemat/webserver/httpd.py

@@ -320,6 +320,7 @@ class MatematWebserver(object):
             _PAGELET_CRON_STATIC_EVENT.set()
 
     def _cron_runner(self, fun: Callable[[Dict[str, str], jinja2.Environment, logging.Logger], None]):
+        self._httpd.logger.info('Executing cron job "%s"', fun.__name__)
         fun(self._httpd.pagelet_variables,
             self._httpd.jinja_env,
             self._httpd.logger)

matemat/webserver/pagelets/receipt_smtp_cron.py

@@ -20,16 +20,22 @@ def receipt_smtp_cron(config: Dict[str, str],
     if config['SmtpSendReceipts'] != '1':
         # Sending receipts via mail is disabled
         return
+    logger.info('Searching users due for receipts.')
     receipts: List[Receipt] = []
     # Connect to the database
     with MatematDatabase(config['DatabaseFile']) as db:
         users: List[User] = db.list_users()
         for user in users:
+            if user.email is None:
+                logger.debug('User "%s" has no e-mail address.', user.name)
             if db.check_receipt_due(user):
+                logger.info('Generating receipt for user "%s".', user.name)
                 # Generate receipts that are due
                 receipt: Receipt = db.create_receipt(user, write=True)
                 receipts.append(receipt)
-    # Send all generated receipts via e-mail
+            else:
+                logger.debug('No receipt due for user "%s".', user.name)
+    # Send all generated receipts via e-mailgi
     if len(receipts) > 0:
         _send_receipt_mails(receipts, jinja_env, logger, config)