You are viewing a plain text version of this content. The canonical link for it is here.
Posted to log4j-user@logging.apache.org by mokader <mo...@cisco.com> on 2010/07/28 12:17:25 UTC
Log4j configuration
Hi,
I am adding logging enhancement to my app. There is already a log4j wrapper
is available in my app. But the existing is in jar and I can not modify. The
problem is, now I have two log4j.xml file. one for my enhancement and other
for existing one.
I first initialize existing log4j wrapper, it uses
DOMConfigurator.configure(initUrl) to configure. After this I call my new
APIs, I follow the same DOMConfigurator.configure(initUrl) to override the
configuration.
The problem here is, I have custom appender, which I specified in log4j.xml
of my enhancement, but the custom appender is called twice - once from
existing APIs and another from my APIs.
I dont know how log4j is invoking my custom appeder, when existing APIs are
initialized. I looked this from stack trace.
--
View this message in context: http://old.nabble.com/Log4j-configuration-tp29285028p29285028.html
Sent from the Log4j - Users mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-user-help@logging.apache.org
Re: Log4j configuration
Posted by Jacob Kjome <ho...@visi.com>.
On Wed, 28 Jul 2010 10:27:24 -0700 (PDT)
mokader <mo...@cisco.com> wrote:
>
> Thanks Jake,
>
> Is there any way to override the configuration or remove the existing
> appenders.
>
Yes, appenders can be removed manually by traversing the logging API. But,
again, it seems like there was some way to tell Log4j not to be cumulative (at
least I hope so). Hopefully someone else can shed light on this possibility.
> would the call to LogManager.shutdown()and then
> DOMConfigurator.configure(initUrl) work.
I've never tested it. You should try it and report results.
Jake
>
> Thanks in advance,
> Mohammed
>
>
> Jacob Kjome wrote:
>>
>> Log4j configuration is cumulative. One call to configure() does not
>> override
>> another. Instead, the configurations are combined. Each time you
>> configure()
>> on a config file that defines an appender, a new one will be added rather
>> than
>> blow away the old one. Therefore you get duplicate logging as more than
>> one
>> appender is active.
>>
>> That said, it seems like this behavior was configurable? Or maybe we
>> merely
>> discussed it a while back since the default behavior is somewhat
>> surprising to
>> users? Maybe one of the other Log4j developers recalls this discussion
>> and
>> can provide details?
>>
>>
>> Jake
>>
>>
>> On Wed, 28 Jul 2010 03:17:25 -0700 (PDT)
>> mokader <mo...@cisco.com> wrote:
>>>
>>> Hi,
>>>
>>> I am adding logging enhancement to my app. There is already a log4j
>>> wrapper
>>> is available in my app. But the existing is in jar and I can not modify.
>>> The
>>> problem is, now I have two log4j.xml file. one for my enhancement and
>>> other
>>> for existing one.
>>>
>>> I first initialize existing log4j wrapper, it uses
>>> DOMConfigurator.configure(initUrl) to configure. After this I call my new
>>> APIs, I follow the same DOMConfigurator.configure(initUrl) to override
>>> the
>>> configuration.
>>>
>>> The problem here is, I have custom appender, which I specified in
>>> log4j.xml
>>> of my enhancement, but the custom appender is called twice - once from
>>> existing APIs and another from my APIs.
>>>
>>> I dont know how log4j is invoking my custom appeder, when existing APIs
>>> are
>>> initialized. I looked this from stack trace.
>>> --
>>> View this message in context:
>>>http://old.nabble.com/Log4j-configuration-tp29285028p29285028.html
>>> Sent from the Log4j - Users mailing list archive at Nabble.com.
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>>>For additional commands, e-mail: log4j-user-help@logging.apache.org
>>>
>>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>> For additional commands, e-mail: log4j-user-help@logging.apache.org
>>
>>
>>
>
> --
> View this message in context:
>http://old.nabble.com/Log4j-configuration-tp29285028p29289033.html
> Sent from the Log4j - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-user-help@logging.apache.org
Re: Log4j configuration
Posted by mokader <mo...@cisco.com>.
Thanks Jake,
Is there any way to override the configuration or remove the existing
appenders.
would the call to LogManager.shutdown()and then
DOMConfigurator.configure(initUrl) work.
Thanks in advance,
Mohammed
Jacob Kjome wrote:
>
> Log4j configuration is cumulative. One call to configure() does not
> override
> another. Instead, the configurations are combined. Each time you
> configure()
> on a config file that defines an appender, a new one will be added rather
> than
> blow away the old one. Therefore you get duplicate logging as more than
> one
> appender is active.
>
> That said, it seems like this behavior was configurable? Or maybe we
> merely
> discussed it a while back since the default behavior is somewhat
> surprising to
> users? Maybe one of the other Log4j developers recalls this discussion
> and
> can provide details?
>
>
> Jake
>
>
> On Wed, 28 Jul 2010 03:17:25 -0700 (PDT)
> mokader <mo...@cisco.com> wrote:
>>
>> Hi,
>>
>> I am adding logging enhancement to my app. There is already a log4j
>> wrapper
>> is available in my app. But the existing is in jar and I can not modify.
>> The
>> problem is, now I have two log4j.xml file. one for my enhancement and
>> other
>> for existing one.
>>
>> I first initialize existing log4j wrapper, it uses
>> DOMConfigurator.configure(initUrl) to configure. After this I call my new
>> APIs, I follow the same DOMConfigurator.configure(initUrl) to override
>> the
>> configuration.
>>
>> The problem here is, I have custom appender, which I specified in
>> log4j.xml
>> of my enhancement, but the custom appender is called twice - once from
>> existing APIs and another from my APIs.
>>
>> I dont know how log4j is invoking my custom appeder, when existing APIs
>> are
>> initialized. I looked this from stack trace.
>> --
>> View this message in context:
>>http://old.nabble.com/Log4j-configuration-tp29285028p29285028.html
>> Sent from the Log4j - Users mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>>For additional commands, e-mail: log4j-user-help@logging.apache.org
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
> For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>
>
--
View this message in context: http://old.nabble.com/Log4j-configuration-tp29285028p29289033.html
Sent from the Log4j - Users mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-user-help@logging.apache.org
Re: Log4j configuration
Posted by Jacob Kjome <ho...@visi.com>.
Log4j configuration is cumulative. One call to configure() does not override
another. Instead, the configurations are combined. Each time you configure()
on a config file that defines an appender, a new one will be added rather than
blow away the old one. Therefore you get duplicate logging as more than one
appender is active.
That said, it seems like this behavior was configurable? Or maybe we merely
discussed it a while back since the default behavior is somewhat surprising to
users? Maybe one of the other Log4j developers recalls this discussion and
can provide details?
Jake
On Wed, 28 Jul 2010 03:17:25 -0700 (PDT)
mokader <mo...@cisco.com> wrote:
>
> Hi,
>
> I am adding logging enhancement to my app. There is already a log4j wrapper
> is available in my app. But the existing is in jar and I can not modify. The
> problem is, now I have two log4j.xml file. one for my enhancement and other
> for existing one.
>
> I first initialize existing log4j wrapper, it uses
> DOMConfigurator.configure(initUrl) to configure. After this I call my new
> APIs, I follow the same DOMConfigurator.configure(initUrl) to override the
> configuration.
>
> The problem here is, I have custom appender, which I specified in log4j.xml
> of my enhancement, but the custom appender is called twice - once from
> existing APIs and another from my APIs.
>
> I dont know how log4j is invoking my custom appeder, when existing APIs are
> initialized. I looked this from stack trace.
> --
> View this message in context:
>http://old.nabble.com/Log4j-configuration-tp29285028p29285028.html
> Sent from the Log4j - Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
>For additional commands, e-mail: log4j-user-help@logging.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-user-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-user-help@logging.apache.org