Kevin Goess wrote:
>>>In Log4perl the default date format is "YYYY/MM/DD HH:mm::ss". In
>>>log4j it seems to be "YYYY-MM-dd HH:mm:ss,SSS" (ISO8601) Why not use
>>>the same default format as log4j? At least a comment about this in the
>>>docs would be nice.
>>>
>>>
>>Problem with ",SSS" is that it's a standard Java feature but it's only
>>available in Perl if Time::HiRes is installed. Regarding slashes vs.
>>dashes, I'm flexible, though. Only drawback is that if we change it,
>>some people's log files will change which might cause some headache for
>>post processors they might have in place. Votes?
>>
>>
>
>I'm all for conformity, but
>
>1) can someone point me to where log4j defines that as the default? I
>can't find it. We do match their ISO8601 behavior with "%d{ISO8601}".
>
http://jakarta.apache.org/log4j/docs/manual.html Search for "ISO 8601
format" and you will find a sample with the d% option. I'm not
suggesting that the manual is any authority in this matter though :-) .
Haven't actually tested it in log4j.
Personally I will use %d{yyyy-MM-dd HH:mm:ss} so I don't care much.
However the log4perl docs claims that the standard formats are much
faster (less string processing?).
>
>
>2) the java SimpleDateFormat
>(http://java.sun.com/j2se/1.3/docs/api/java/text/SimpleDateFormat.html)
>defines "y" but not "Y". Both log4perl and log4j seem to go back and
>forth between YYYY and yyyy, what's up with that, are they really
>interchangeable?
>
YYYY doesn't work in log4perl. The pod should be updated.
>
>3) if that is the log4j default, we could add the ,SSS if Time::HiRes is
>installed.
>
>4) if we do change, should note it prominently somewhere I guess
>
Even if it isn't changed, a note about the difference would be nice.
In
http://log4perl.sourceforge.net/releases/Log-Log4perl/docs/html/Log/Log4perl/Layout/PatternLayout.html
under "description"
>The new() method creates a new PatternLayout, specifying its log
format. The format string can contain a number of placeholders which
will be replaced by the logging engine when it's time to log the message:
>
> %c Category of the logging event.
> %C Fully qualified package (or class) name of the caller
> %d Current date in yyyy/MM/dd hh:mm:ss format
[snip]
> %x The topmost NDC (see below)
> %X{key} The entry 'key' of the MDC (see below)
> %% A literal percent (%) sign
>
Note: In log4j, the default format for %d is "yyyy-MM-dd HH:mm:ss,SSS"
(ISO8601)
>NDC and MDC are explained in Nested Diagnostic Context (NDC) in the
Log::Log4perl manpage and Mapped Diagnostic Context (MDC) in the
Log::Log4perl manpage.
>
>Quantify placeholders
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