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Posted to log4j-user@logging.apache.org by Jochen Wiedmann <jo...@gmail.com> on 2016/06/17 08:41:42 UTC

Multiple instances of log4j2.xml

Hi,

I have an application (more precisely: a war file), which is deployed
identically on the same application server. (Think multi temancy),
Now, in Log4j 1, I handled that situation quite easily, like this:

    final String uri = tenantName + "/log4j.xml";
    final URL url = ClassLoader.getResource(uri);
    if (uri == null) {
        throw new IllegalStateException("Unable to locate logging
configuration: " + uri);
    }
    DOMConfigurator.configure(url);

Or, in other words: For every tenant, I have a directory for
configuration files, including log4j.xml.
Simple, quick, and worked absolutely reliable.

But, how do I get this to work with log4j2?

Thanks,

Jochen

-- 
The next time you hear: "Don't reinvent the wheel!"

http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg

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Re: Multiple instances of log4j2.xml

Posted by Ralph Goers <ra...@dslextreme.com>.
Configuration is not part of the public API - it is very implementation specific. So Configurator is part of log4j-core. However, we expect it to be used by applications so it is one of the classes in core where we try to maintain binary compatibility.

Ralph

> On Jun 17, 2016, at 6:15 AM, Jochen Wiedmann <jo...@gmail.com> wrote:
> 
> On Fri, Jun 17, 2016 at 3:07 PM, Ralph Goers <ra...@dslextreme.com> wrote:
>> You would use Configurator.initialize(“MyContextName”, this.getClass().getClassLoader(), uri);
>> 
>> The classLoader value can be null.
> 
> Thanks, Ralph. One question, though:
> 
> The class Configurator is not present on
> 
>  http://logging.apache.org/log4j/2.x/log4j-api/apidocs/index.html
> 
> Hence, it doesn't seem to be a part of the public API?
> 
> Jochen
> 
> 
> -- 
> The next time you hear: "Don't reinvent the wheel!"
> 
> http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
> 
> 



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Re: Multiple instances of log4j2.xml

Posted by Matt Sicker <bo...@gmail.com>.
Configurator is in log4j-core.

On 17 June 2016 at 08:15, Jochen Wiedmann <jo...@gmail.com> wrote:

> On Fri, Jun 17, 2016 at 3:07 PM, Ralph Goers <ra...@dslextreme.com>
> wrote:
> > You would use Configurator.initialize(“MyContextName”,
> this.getClass().getClassLoader(), uri);
> >
> > The classLoader value can be null.
>
> Thanks, Ralph. One question, though:
>
> The class Configurator is not present on
>
>   http://logging.apache.org/log4j/2.x/log4j-api/apidocs/index.html
>
> Hence, it doesn't seem to be a part of the public API?
>
> Jochen
>
>
> --
> The next time you hear: "Don't reinvent the wheel!"
>
>
> http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>


-- 
Matt Sicker <bo...@gmail.com>

Re: Multiple instances of log4j2.xml

Posted by Jochen Wiedmann <jo...@gmail.com>.
On Fri, Jun 17, 2016 at 3:07 PM, Ralph Goers <ra...@dslextreme.com> wrote:
> You would use Configurator.initialize(“MyContextName”, this.getClass().getClassLoader(), uri);
>
> The classLoader value can be null.

Thanks, Ralph. One question, though:

The class Configurator is not present on

  http://logging.apache.org/log4j/2.x/log4j-api/apidocs/index.html

Hence, it doesn't seem to be a part of the public API?

Jochen


-- 
The next time you hear: "Don't reinvent the wheel!"

http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg

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Re: Multiple instances of log4j2.xml

Posted by Ralph Goers <ra...@dslextreme.com>.
I would probably use tenantName for the context name.

Ralph

> On Jun 17, 2016, at 6:07 AM, Ralph Goers <ra...@dslextreme.com> wrote:
> 
> You would use Configurator.initialize(“MyContextName”, this.getClass().getClassLoader(), uri);
> 
> The classLoader value can be null.
> 
> Ralph
> 
>> On Jun 17, 2016, at 1:41 AM, Jochen Wiedmann <jo...@gmail.com> wrote:
>> 
>> Hi,
>> 
>> I have an application (more precisely: a war file), which is deployed
>> identically on the same application server. (Think multi temancy),
>> Now, in Log4j 1, I handled that situation quite easily, like this:
>> 
>>   final String uri = tenantName + "/log4j.xml";
>>   final URL url = ClassLoader.getResource(uri);
>>   if (uri == null) {
>>       throw new IllegalStateException("Unable to locate logging
>> configuration: " + uri);
>>   }
>>   DOMConfigurator.configure(url);
>> 
>> Or, in other words: For every tenant, I have a directory for
>> configuration files, including log4j.xml.
>> Simple, quick, and worked absolutely reliable.
>> 
>> But, how do I get this to work with log4j2?
>> 
>> Thanks,
>> 
>> Jochen
>> 
>> -- 
>> The next time you hear: "Don't reinvent the wheel!"
>> 
>> http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg
>> 
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>> For additional commands, e-mail: log4j-user-help@logging.apache.org
>> 
>> 
> 



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Re: Multiple instances of log4j2.xml

Posted by Ralph Goers <ra...@dslextreme.com>.
You would use Configurator.initialize(“MyContextName”, this.getClass().getClassLoader(), uri);

The classLoader value can be null.

Ralph

> On Jun 17, 2016, at 1:41 AM, Jochen Wiedmann <jo...@gmail.com> wrote:
> 
> Hi,
> 
> I have an application (more precisely: a war file), which is deployed
> identically on the same application server. (Think multi temancy),
> Now, in Log4j 1, I handled that situation quite easily, like this:
> 
>    final String uri = tenantName + "/log4j.xml";
>    final URL url = ClassLoader.getResource(uri);
>    if (uri == null) {
>        throw new IllegalStateException("Unable to locate logging
> configuration: " + uri);
>    }
>    DOMConfigurator.configure(url);
> 
> Or, in other words: For every tenant, I have a directory for
> configuration files, including log4j.xml.
> Simple, quick, and worked absolutely reliable.
> 
> But, how do I get this to work with log4j2?
> 
> Thanks,
> 
> Jochen
> 
> -- 
> The next time you hear: "Don't reinvent the wheel!"
> 
> http://www.keystonedevelopment.co.uk/wp-content/uploads/2014/10/evolution-of-the-wheel-300x85.jpg
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
> 
> 



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