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Posted to notifications@logging.apache.org by "ppkarwasz (via GitHub)" <gi...@apache.org> on 2023/04/08 18:41:26 UTC
[I] Date and time patterns should follow `DateTimeFormatter` (logging-log4j2)
ppkarwasz opened a new issue, #1416:
URL: https://github.com/apache/logging-log4j2/issues/1416
In release 2.x date time patterns follow [`SimpleDateFormat`](https://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html) with additional extensions provided by [`FastDateFormat`](https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/time/FastDateFormat.html) and support for the `n` specifier for nanoseconds.
The exception is JSON Template Layout, which uses the format specifiers from [`DateTimeFormatter`](https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html).
In release 3.x we should switch all format specifiers to those documented `DateTimeFormatter`.
The major differences are:
* `u` means day-of-week in SDT and era in DTF,
* SDT lacks `L` meaning month as text,
* SDT lacks `q` and `Q` as quarter,
* in DTF `Z`, `ZZ` and `ZZZ` all mean the same format for the time zone (e.g. `-0800`, `+0000`). In FDT `ZZ` uses the ISO 8601 format with a colon (e.g. `-08:00`, `Z`) and `ZZZ` adds a colon to the original `Z` format (e.g. `-08:00`, `+00:00`).
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Re: [I] Date and time patterns should follow `DateTimeFormatter` (logging-log4j2)
Posted by "garydgregory (via GitHub)" <gi...@apache.org>.
garydgregory commented on issue #1416:
URL: https://github.com/apache/logging-log4j2/issues/1416#issuecomment-1502375240
SDT -> SDF?
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Re: [I] Date and time patterns should follow `DateTimeFormatter` (logging-log4j2)
Posted by "vy (via GitHub)" <gi...@apache.org>.
vy commented on issue #1416:
URL: https://github.com/apache/logging-log4j2/issues/1416#issuecomment-1502146385
Even though this will be a (slightly?) breaking change, can't we rather implement this on `2.x`? As long as we clearly indicate this in release notes, this feels legit to me. @rgoers, WDYT?
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