syslog: T5367: add format option to include timezone in message

Add CLI option to include the systems timezone in the syslog message sent to
a collector. This can be enabled using:

  set system syslog host <hostname> format include-timezone

(cherry picked from commit 042be39ccabb43a766e04a447207610ff017bd7d)

1 files changed, 8 insertions, 1 deletions

diff --git a/src/conf_mode/system_syslog.py b/src/conf_mode/system_syslog.py
index 07fbb0734..2497c5bb6 100755
--- a/src/conf_mode/system_syslog.py
+++ b/src/conf_mode/system_syslog.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2018-2023 VyOS maintainers and contributors
+# Copyright (C) 2018-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,6 +18,7 @@ import os
 
 from sys import exit
 
+from vyos.base import Warning
 from vyos.config import Config
 from vyos.configdict import is_node_changed
 from vyos.configverify import verify_vrf
@@ -58,6 +59,12 @@ def verify(syslog):
     if not syslog:
         return None
 
+    if 'host' in syslog:
+         for host, host_options in syslog['host'].items():
+             if 'protocol' in host_options and host_options['protocol'] == 'udp':
+                 if 'format' in host_options and 'octet_counted' in host_options['format']:
+                     Warning(f'Syslog UDP transport for "{host}" should not use octet-counted format!')
+
     verify_vrf(syslog)
 
 def generate(syslog):