From fa2932d98a7a0d8643f81600aad4aab4ebba9619 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@tobru.ch>
Date: Tue, 6 Feb 2018 17:46:16 +0100
Subject: [PATCH] catch imap abortions and exit

exiting will allow f.e. OpenShift to restart the failed pod.
reason: got "imaplib.abort: Server shutting down." some day.
---
 library/emailhandling.py | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/library/emailhandling.py b/library/emailhandling.py
index 95b88da..9f102c8 100644
--- a/library/emailhandling.py
+++ b/library/emailhandling.py
@@ -33,13 +33,17 @@ class EmailHandling:
         """ searches for emails matching the configured subject """
 
         self.logger.info('Searching for messages matching the subject')
-        typ, msg_ids = self.imap.search(
-            None,
-            _EMAIL_SUBJECTS,
-        )
-        if typ != 'OK':
-            self.logger.error('Error searching for matching messages')
-            return False
+        try:
+            typ, msg_ids = self.imap.search(
+                None,
+                _EMAIL_SUBJECTS,
+            )
+            if typ != 'OK':
+                self.logger.error('Error searching for matching messages')
+                return False
+        except imaplib.IMAP4.abort as err:
+            self.logger.error('IMAP search aborted - exiting: %s', str(err))
+            raise SystemExit(1)
 
         num_messages = len(msg_ids[0].split())
         self.logger.info('Found %s matching messages', str(num_messages))