myproject/ansible/roles/logstash/files/patterns/ruby

RUBY_LOGLEVEL (?:DEBUG|FATAL|ERROR|WARN|INFO)
RUBY_LOGGER [DFEWI], \[%{TIMESTAMP_ISO8601:timestamp} #%{POSINT:pid}\] *%{RUBY_LOGLEVEL:loglevel} -- +%{DATA:progname}: %{GREEDYDATA:message}