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Posted to log4j-user@logging.apache.org by Refr Bruhl <re...@yahoo.com> on 2010/12/08 17:16:44 UTC
Log4j with multiple files converting to xml
Greetings
I tried searching for this on the mail archives link, the link seems to be
changed.
My goal:
I have 4 files for logging. ConLogger -> logs to console, lgLogger -> logs to a
log file, qryLogger that logs to a log file, delLogger that logs to a log file,
and exLogger that logs to a log file
lgLogger logs generall aplication activity. I have used addAppender to ensure
everything logged to the console is also logged to lgLogger
qryLogger logs nothing but query information
exLogger logs all exception errors
All 4 of these files can support debug thru fatal entries.
I have used this same pattern in several "batch" type jobs for about 4 years
now.
These files are configured in the primary java class.
What I want to do is change the configuration from "hard" coding these log files
in the app to using xml files for configuration.
The problem I am running into is it seems when using xml or property files log4j
makes the assumption of only one logger with multiple appenders per xml file. I
want or think I want 4 distinct loggers with each having a separate appender.
Is this correct? Has anyone else tried to do something similar with log4j? Any
idea on how to achieve this?
Thanks!
--Refr inn gra
"Wars are to be won with swords and spears,
not with rice and salt." -- Uesugi Kenshin
Re: Log4j with multiple files converting to xml
Posted by Jacob Kjome <ho...@visi.com>.
You can configure your entire logging system via a single config file. You
are not limited to one logger/appender per config file. Besides, children of
the the logger inherit from the parent, by default, so when you configure a
given logger, e.g., the root logger, that same config applies to all children
(unless you set additivity to false at some point in the hierarchy). I assure
you, there is no need for multiple config files.
The manual [1] shows examples of properties config files. The wiki [2]
provides examples of XML config files. And any search engine will provide
lots of extra resources showing how to write Log4j config files. Please read
these resources and take a crack at the config. Feel free to post your config
if you have more questions.
[1] http://logging.apache.org/log4j/1.2/manual.html
[2] http://wiki.apache.org/logging-log4j/Log4jXmlFormat
Jake
On Wed, 8 Dec 2010 09:35:28 -0800 (PST)
Refr Bruhl <re...@yahoo.com> wrote:
> Well been doing that already.
>
> Lets start with the basics
>
> What is the syntax for configuring multiple loggers using an xml file?
>
> If I use log4j.xml or log4j.properties I can configure one logger with code
> straight from a tutorial...
> org.apache.log4j.Logger conLogger =
>Logger.getLogger(BaseConfig.class);
>
>
> Using this as a model I would think I would want
> org.apache.log4j.Logger qryLogger =
>Logger.getLogger(BaseConfig.class);
> org.apache.log4j.Logger lgLogger =
>Logger.getLogger(BaseConfig.class);
> org.apache.log4j.Logger exLogger =
>Logger.getLogger(BaseConfig.class);
>
> Yet if I use this construct, even if I set loggers in the xml file, the last
> defined file will write console output to its log.
>
> So it seems to me that instead of basing a logger on a class, I need to base
>a
> logger on a unique xml file.
>
>
> I can use
> URL url = Loader.getResource("conLogger.xml");
> DOMConfigurator.configure(url);
>
> again from the same tutorial.. but it only works with 1 xml file.
>
>
> So if I am limited to 1 xml file how do I configure separate loggers and
> appenders in 1 xml file or is there a way I can have 4 separate xml files
>with a
> unique logger and appender for each?
>
>
>
>
>
>
> --Refr inn gra
>
>
> "Wars are to be won with swords and spears,
> not with rice and salt." -- Uesugi Kenshin
>
>
>
>
> ________________________________
>From: Jacob Kjome <ho...@visi.com>
> To: Log4J Users List <lo...@logging.apache.org>
> Sent: Wed, December 8, 2010 11:12:08 AM
> Subject: Re: Log4j with multiple files converting to xml
>
> I suggest that you take a crack at the configuration yourself. If you still
> have questions, post it and we can help you tweak it.
>
> Jake
>
>
> On Wed, 8 Dec 2010 08:16:44 -0800 (PST)
> Refr Bruhl <re...@yahoo.com> wrote:
>>
>> Greetings
>>
>> I tried searching for this on the mail archives link, the link seems to be
>>changed.
>>
>> My goal:
>> I have 4 files for logging. ConLogger -> logs to console, lgLogger -> logs
>>to a
>>log file, qryLogger that logs to a log file, delLogger that logs to a log
>>file,
>>and exLogger that logs to a log file
>>
>> lgLogger logs generall aplication activity. I have used addAppender to
>>ensure
>>everything logged to the console is also logged to lgLogger
>> qryLogger logs nothing but query information
>> exLogger logs all exception errors
>>
>> All 4 of these files can support debug thru fatal entries.
>>
>> I have used this same pattern in several "batch" type jobs for about 4 years
>>now.
>>
>> These files are configured in the primary java class.
>>
>> What I want to do is change the configuration from "hard" coding these log
>>files in the app to using xml files for configuration.
>>
>>
>> The problem I am running into is it seems when using xml or property files
>>log4j makes the assumption of only one logger with multiple appenders per xml
>>file. I want or think I want 4 distinct loggers with each having a separate
>>appender.
>>
>> Is this correct? Has anyone else tried to do something similar with log4j?
>>Any
>>idea on how to achieve this?
>>
>>
>> Thanks!
>>
>>
>> --Refr inn gra
>>
>>
>> "Wars are to be won with swords and spears, not with rice and salt." --
>>Uesugi
>>Kenshin
>>
>>
>>
>>
>
>
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>
>
>
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Re: Log4j with multiple files converting to xml
Posted by Refr Bruhl <re...@yahoo.com>.
Well been doing that already.
Lets start with the basics
What is the syntax for configuring multiple loggers using an xml file?
If I use log4j.xml or log4j.properties I can configure one logger with code
straight from a tutorial...
org.apache.log4j.Logger conLogger = Logger.getLogger(BaseConfig.class);
Using this as a model I would think I would want
org.apache.log4j.Logger qryLogger = Logger.getLogger(BaseConfig.class);
org.apache.log4j.Logger lgLogger = Logger.getLogger(BaseConfig.class);
org.apache.log4j.Logger exLogger = Logger.getLogger(BaseConfig.class);
Yet if I use this construct, even if I set loggers in the xml file, the last
defined file will write console output to its log.
So it seems to me that instead of basing a logger on a class, I need to base a
logger on a unique xml file.
I can use
URL url = Loader.getResource("conLogger.xml");
DOMConfigurator.configure(url);
again from the same tutorial.. but it only works with 1 xml file.
So if I am limited to 1 xml file how do I configure separate loggers and
appenders in 1 xml file or is there a way I can have 4 separate xml files with a
unique logger and appender for each?
--Refr inn gra
"Wars are to be won with swords and spears,
not with rice and salt." -- Uesugi Kenshin
________________________________
From: Jacob Kjome <ho...@visi.com>
To: Log4J Users List <lo...@logging.apache.org>
Sent: Wed, December 8, 2010 11:12:08 AM
Subject: Re: Log4j with multiple files converting to xml
I suggest that you take a crack at the configuration yourself. If you still
have questions, post it and we can help you tweak it.
Jake
On Wed, 8 Dec 2010 08:16:44 -0800 (PST)
Refr Bruhl <re...@yahoo.com> wrote:
>
> Greetings
>
> I tried searching for this on the mail archives link, the link seems to be
>changed.
>
> My goal:
> I have 4 files for logging. ConLogger -> logs to console, lgLogger -> logs to a
>log file, qryLogger that logs to a log file, delLogger that logs to a log file,
>and exLogger that logs to a log file
>
> lgLogger logs generall aplication activity. I have used addAppender to ensure
>everything logged to the console is also logged to lgLogger
> qryLogger logs nothing but query information
> exLogger logs all exception errors
>
> All 4 of these files can support debug thru fatal entries.
>
> I have used this same pattern in several "batch" type jobs for about 4 years
>now.
>
> These files are configured in the primary java class.
>
> What I want to do is change the configuration from "hard" coding these log
>files in the app to using xml files for configuration.
>
>
> The problem I am running into is it seems when using xml or property files
>log4j makes the assumption of only one logger with multiple appenders per xml
>file. I want or think I want 4 distinct loggers with each having a separate
>appender.
>
> Is this correct? Has anyone else tried to do something similar with log4j? Any
>idea on how to achieve this?
>
>
> Thanks!
>
>
> --Refr inn gra
>
>
> "Wars are to be won with swords and spears, not with rice and salt." -- Uesugi
>Kenshin
>
>
>
>
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Re: Log4j with multiple files converting to xml
Posted by Jacob Kjome <ho...@visi.com>.
I suggest that you take a crack at the configuration yourself. If you still
have questions, post it and we can help you tweak it.
Jake
On Wed, 8 Dec 2010 08:16:44 -0800 (PST)
Refr Bruhl <re...@yahoo.com> wrote:
>
> Greetings
>
> I tried searching for this on the mail archives link, the link seems to be
> changed.
>
> My goal:
> I have 4 files for logging. ConLogger -> logs to console, lgLogger -> logs
>to a
> log file, qryLogger that logs to a log file, delLogger that logs to a log
>file,
> and exLogger that logs to a log file
>
> lgLogger logs generall aplication activity. I have used addAppender to
>ensure
> everything logged to the console is also logged to lgLogger
> qryLogger logs nothing but query information
> exLogger logs all exception errors
>
> All 4 of these files can support debug thru fatal entries.
>
> I have used this same pattern in several "batch" type jobs for about 4 years
> now.
>
> These files are configured in the primary java class.
>
> What I want to do is change the configuration from "hard" coding these log
>files
> in the app to using xml files for configuration.
>
>
> The problem I am running into is it seems when using xml or property files
>log4j
> makes the assumption of only one logger with multiple appenders per xml
>file. I
> want or think I want 4 distinct loggers with each having a separate
>appender.
>
> Is this correct? Has anyone else tried to do something similar with log4j?
>Any
> idea on how to achieve this?
>
>
> Thanks!
>
>
> --Refr inn gra
>
>
> "Wars are to be won with swords and spears,
> not with rice and salt." -- Uesugi Kenshin
>
>
>
>
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