I think I misunderstood you. Yes, you can get java.vm.version and the like as
system properties but they may not be completely formatted as Gary wishes.
On Sep 18, 2014, at 4:38 PM, Ralph Goers <rgo...@apache.org> wrote:
> It isn't a system property
>
> Sent from my iPad
>
> On Sep 18, 2014, at 2:41 PM, Matt Sicker <boa...@gmail.com> wrote:
>
>> Wouldn't this all be available through the ${sys:*} lookup variables?
>>
>> On 18 September 2014 12:56, Ralph Goers <ralph.go...@dslextreme.com> wrote:
>> I would recommend adding it as a special Lookup just like hostname is. Then
>> in your pattern layout you just need to specify the header as
>> ${java-version} or ${java-short-version}, etc.
>>
>> Ralph
>>
>> On Sep 18, 2014, at 9:51 AM, Gary Gregory <garydgreg...@gmail.com> wrote:
>>
>>>
>>> I would like the start of my logs to start with the same information "java
>>> -version" provides.
>>>
>>> On the console, "java -version" says:
>>>
>>> java version "1.8.0_20"
>>> Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
>>> Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)
>>>
>>> I cook this up manually now from system properties but it sure would be
>>> nice to ask Log4j to do it for me since 'java -version' is something I am
>>> sure we are all used to seeing.
>>>
>>> This could be done with special pre-built Message classes and % markers I
>>> can also add to the header of a file (or any) appender.
>>>
>>> I could see a:
>>>
>>> JavaShortVersionMessage and %JavaShortVersion produce:
>>> java version "1.8.0_20"
>>>
>>> JavaJreVersionMessage %JavaJreVersion produce:
>>>
>>> Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
>>>
>>> JavaVmVersionMessage and %JavaVmVersion produce:
>>> Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)
>>>
>>> In code I could say:
>>>
>>> logger.debug(new JavaShortVersionMesssage());
>>> logger.debug(new JavaJreVersionMessage());
>>> logger.debug(new JavaVmVersionMessage());
>>>
>>> In a file appender I could say header="My
>>> App%n%JavaShortVersionMessage%n%JavaJreVersionMessage%n%JavaVmVersionMessage%n"
>>>
>>> Or maybe we could have someway to break a header into >1 log event.
>>>
>>> Thoughts?
>>>
>>> Gary
>>>
>>> --
>>> E-Mail: garydgreg...@gmail.com | ggreg...@apache.org
>>> Java Persistence with Hibernate, Second Edition
>>> JUnit in Action, Second Edition
>>> Spring Batch in Action
>>> Blog: http://garygregory.wordpress.com
>>> Home: http://garygregory.com/
>>> Tweet! http://twitter.com/GaryGregory
>>
>>
>>
>>
>> --
>> Matt Sicker <boa...@gmail.com>
