Atul Pendse created LOG4J2-3280:
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Summary: Support for microsecond precision in RFC5424Layout
Key: LOG4J2-3280
URL: https://issues.apache.org/jira/browse/LOG4J2-3280
Project: Log4j 2
Issue Type: New Feature
Components: Layouts
Affects Versions: 2.17.0, 2.0
Environment: Tomcat 8.5.x
Java 11
log4j 2.17.0
Reporter: Atul Pendse
{color:#000000}Our application sends syslog messages to a centralized facility
which requires timestamps to be in microsecond format.{color}
{color:#000000}Our application was so far using log4j 1.12.5’s Syslog appender
to send syslog messages, which used to format timestamps with microsecond
precision.{color}
{color:#000000}We are now upgrading to log4j 2.17.0, and don’t see any way to
get microseconds included in timestamp for syslog.{color}
{color:#000000}I am trying to log messages using SyslogAppender with RFC5424
layout.{color}
{color:#000000}I see that RFC5424Layout.java restricts timestamp to millisecond
precision (e.g. 2021-12-22T22:54:33.889-08:00).{color}
{color:#000000}RFC5424 specification also mentions support for microsecond
precision. Here is some text from
{color}[https://datatracker.ietf.org/doc/html/rfc5424#section-6.2.3]
{color:#000000}Example 4{color}
{color:#000000} 2003-08-24T05:14:15.000003-07:00{color}
{color:#000000} This represents 24 August 2003 at 05:14:15am, 3 microseconds
into the{color}
{color:#000000} next second. The microsecond resolution is indicated by
the{color}
{color:#000000} additional digits in TIME-SECFRAC. The timestamp indicates
that its{color}
{color:#000000} local time is -7 hours from UTC. This timestamp might be
created in{color}
{color:#000000} the US Pacific time zone during daylight savings time.{color}
{color:#000000}The RFE is to add support for microsecond precision while
formatting timestamp in RFC5424 layout{color}
{color:#000000}A new layout attribute to define millisecond/microsecond
precision would be a preferred way.{color}
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