logstash/logstash — pull request #1039 by piotr1212 (2014-02-09 21:02:55+00:00)
Title: make syslog priority configurable

Set priority or facility + severity. This is a proposed fix for: https://logstash.jira.com/browse/LOGSTASH-1135
Set the priority from configuration or a field (integer). If use_labels is set don't use the priority but parse facility and severity strings from config or field.
If setting the priority fails fallback to priority 13 according to RFC3164.

I will update the docs if this patch will be accepted.

I have signed the CLA