[wildfly-dev] -Xbootclasspath/p:jboss-logmanager-<VERSION>.jar equivalent during runtime

[Sam Thomas]

Hi James,

Hmm I see. One Final question. When an agent starts up with the JVM I have
seen this as well

-Xbootclasspath/p:jboss-logmanager-<VERSION>.jar;log4j-jboss-logmanager-<VERSION>.jar.

So when we don't provide these arguments at startup and the agent attaches
later, the log4j manager will not be present. So I would have to alter the
LogManager object or something like that. Changing the system property that
points to these guys is not going to make it work right? Or am I
understanding this wrong and only one of them is used (whichever is found
first).

Thanks
./Sam


On Thu, Nov 15, 2018 at 8:46 AM James Perkins <jperkins at redhat.com> wrote:

> Hi Sam,
> It just depends if the any method on the java.util.logging.LogManager gets
> invoked before JBoss Modules sets the
> java.util.logging.manager=org.jboss.logmanager.LogManager system property.
> This happens fairly early in the main entry point of jboss-modules.
>
> [1]:
> https://github.com/jboss-modules/jboss-modules/blob/1.8.6.Final/src/main/java/org/jboss/modules/Main.java#L520-L528
>
> On Wed, Nov 14, 2018 at 6:45 PM Sam Thomas <sam.thomas at broadcom.com>
> wrote:
>
>> Hi James,
>>
>> Oh I see, that makes total sense - since premain() executes before
>> LogManager is configured. But when agentmain() is executes it’s afterwards.
>> I wouldn’t need to replicate this behavior. I would probably have add a new
>> one if I don’t get one that I need. Am I correct?
>>
>> Thanks
>> ./Sam
>>
>> On Wed, Nov 14, 2018 at 11:38 PM James Perkins <jperkins at redhat.com>
>> wrote:
>>
>>> I'm not sure I follow. The only time the log manager is required to be
>>> on the boot class path is if the agent creates a logger before the
>>> java.util.logging.LogManager is configured.
>>>
>>> On Tue, Nov 13, 2018 at 6:17 PM Sam Thomas <sam.thomas at broadcom.com>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> I understand when starting jboss you can supply the above to specify
>>>> the logmanager. If this is not supplied during start up and an agent
>>>> connects to jboss during runtime using agentmain(), how can I replicate the
>>>> -Xbootclasspath/p: behavior during runtime?
>>>>
>>>> Thanks and Regards
>>>> Sam Thomas
>>>>
>>> _______________________________________________
>>>> wildfly-dev mailing list
>>>> wildfly-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/wildfly-dev
>>>
>>>
>>>
>>> --
>>> James R. Perkins
>>> JBoss by Red Hat
>>>
>> --
>>
>> Thanks
>> ./Sam
>>
>
>
> --
> James R. Perkins
> JBoss by Red Hat
>
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