[LOG4J2-969] Refactor SyslogAppender so that Layout is a Plugin element

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2
• Fix Version/s: 2.8
• Component/s: Appenders, Layouts
• Labels: syslog syslogappender
• Assignee: Gary D. Gregory
• Reporter: Paul D Johe
• Created: 03/Mar/15 14:14
• Updated: 08/Jul/17 19:41
• Resolved: 13/Dec/16 03:04

Description

There are quite a lot of attributes to the syslogappender that could have been simply included as:

@PluginElement("layout") Layout<? extends Serializable> layout,

This is much more flexible (for example, extension of existing syslog layouts) and the field 'format' becomes superfluous, as it is implied by the layout chosen (normally SyslogLayout or Rfc5424Layout will be chosen).

Furthermore, it becomes much clearer which attributes are for the RFC5424 format and which are for the BSD format.

Or at least add the possibility for a Layout element, which if does not exist will use the existing code.

Issue Links

• is related to: LOG4J2-256 Support custom format using patterns in SyslogLayout
• links to: GitHub Pull Request #46