[jira] [Created] (LOG4J2-1246) The PatternLayout for ISO-ISO8601 doesn't seem to properly handle the Timezone

["Daniel Marcotte (JIRA)" <ji...@apache.org>]

Daniel Marcotte created LOG4J2-1246:
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             Summary: The PatternLayout for ISO-ISO8601 doesn't seem to properly handle the Timezone
                 Key: LOG4J2-1246
                 URL: https://issues.apache.org/jira/browse/LOG4J2-1246
             Project: Log4j 2
          Issue Type: Bug
          Components: Pattern Converters
            Reporter: Daniel Marcotte
             Fix For: 2.4.1


Hi there!

There might be a small issue with the Pattern Converters regarding Timezone management: http://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout

Right now, these patterns:

* {code}"%d{ISO8601_BASIC}"{code}
* {code}"%d{ISO8601_BASIC}{UTC}"{code}

Give the same results:

* {code}20160104T204256,048{code}
* {code}20160104T204256,048{code}

However, with a deeper look at the ISO-8601 standards, the second one with {code}"{UTC}"{code} should properly add the Timezone at the end of the timestamp.

Reference: https://en.wikipedia.org/wiki/ISO_8601#Times
{quote}
*UTC*
If the time is in UTC, add a Z directly after the time without a space. Z is the zone designator for the zero UTC offset. "09:30 UTC" is therefore represented as "09:30Z" or "0930Z". "14:45:15 UTC" would be "14:45:15Z" or "144515Z".
UTC time is also known as 'Zulu' time, since 'Zulu' is the NATO phonetic alphabet word for 'Z'.

*Examples*

<time>Z
<time>±hh:mm
<time>±hhmm
<time>±hh
{quote}

As of ISO-8601, the results should be one of the following (configurable?):
* {code}20160104T204256,048Z{code}
* {code}20160104T204256,048+00:00{code}
* {code}20160104T204256,048+0000{code}
* {code}20160104T204256,048+00{code}


Another reference: http://stackoverflow.com/questions/833102/wheres-the-datetime-z-format-specifier



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