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Posted to log4j-user@logging.apache.org by Arwen Pond <ap...@book.com> on 2014/08/08 20:28:05 UTC
Multiple configuration files?
I have multiple applications that use log4j. Some depend on others. For example application A can be run independently and has a log4j config file under src/main/resources/log4j2.xml. Application B invokes application A but it has a different log4j config file in its resource directory.
When there are multiple log4j2.xml files in the path how are they used/found? Are they additive? Does it just use the first one it finds?
Thanks,
Arwen
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Re: Multiple configuration files?
Posted by Remko Popma <re...@gmail.com>.
In your app, you can execute
System.out.println(getClass().getResource("/log4j2.xml"));
(assuming that the config file is in the classpath).
Also, if you set <Configuration status="trace" ...
in your log4j2 config file it will print the location of the config file that is used.
Sent from my iPhone
> On 2014/08/12, at 1:24, Arwen Pond <ap...@book.com> wrote:
>
> B calls A without setting a new process and passes the logger object to A. It seems to me that both files will be on the classpath (lib directory). How do I know which one it will find first?
>
> -----Original Message-----
> From: Remko Popma [mailto:remko.popma@gmail.com]
> Sent: Friday, August 08, 2014 5:58 PM
> To: Log4J Users List
> Subject: Re: Multiple configuration files?
>
> Do applications A and B run in separate processes, or does B call some function in A without starting a new process for A?
>
> Log4j initializes only once in a given process. If A and B are in separate processes they can have separate configurations. If they run in the same process, they'll share a config. Which config file is used depends on your classpath and system properties when you started that process.
>
> Sent from my iPhone
>
>> On 2014/08/09, at 3:28, Arwen Pond <ap...@book.com> wrote:
>>
>> I have multiple applications that use log4j. Some depend on others. For example application A can be run independently and has a log4j config file under src/main/resources/log4j2.xml. Application B invokes application A but it has a different log4j config file in its resource directory.
>>
>> When there are multiple log4j2.xml files in the path how are they used/found? Are they additive? Does it just use the first one it finds?
>>
>> Thanks,
>> Arwen
>>
>>
>>
>
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RE: Multiple configuration files?
Posted by Arwen Pond <ap...@book.com>.
B calls A without setting a new process and passes the logger object to A. It seems to me that both files will be on the classpath (lib directory). How do I know which one it will find first?
-----Original Message-----
From: Remko Popma [mailto:remko.popma@gmail.com]
Sent: Friday, August 08, 2014 5:58 PM
To: Log4J Users List
Subject: Re: Multiple configuration files?
Do applications A and B run in separate processes, or does B call some function in A without starting a new process for A?
Log4j initializes only once in a given process. If A and B are in separate processes they can have separate configurations. If they run in the same process, they'll share a config. Which config file is used depends on your classpath and system properties when you started that process.
Sent from my iPhone
> On 2014/08/09, at 3:28, Arwen Pond <ap...@book.com> wrote:
>
> I have multiple applications that use log4j. Some depend on others. For example application A can be run independently and has a log4j config file under src/main/resources/log4j2.xml. Application B invokes application A but it has a different log4j config file in its resource directory.
>
> When there are multiple log4j2.xml files in the path how are they used/found? Are they additive? Does it just use the first one it finds?
>
> Thanks,
> Arwen
>
>
>
> This electronic mail message contains information that (a) is or may
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> please contact the sender immediately and take the steps necessary to
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>
> Not Intended as a Substitute for a Writing: Notwithstanding the
> Uniform Electronic Transaction Act or any other law of similar effect,
> absent an express statement to the contrary, this e-mail message, its
> contents, and any attachments hereto are not intended to represent an
> offer or acceptance to enter into a contract and are not otherwise
> intended to bind this sender, barnesandnoble.com llc,
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the addressee(s) named herein. If you are not an intended
recipient, please contact the sender immediately and take the
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Re: Multiple configuration files?
Posted by Remko Popma <re...@gmail.com>.
Do applications A and B run in separate processes, or does B call some function in A without starting a new process for A?
Log4j initializes only once in a given process. If A and B are in separate processes they can have separate configurations. If they run in the same process, they'll share a config. Which config file is used depends on your classpath and system properties when you started that process.
Sent from my iPhone
> On 2014/08/09, at 3:28, Arwen Pond <ap...@book.com> wrote:
>
> I have multiple applications that use log4j. Some depend on others. For example application A can be run independently and has a log4j config file under src/main/resources/log4j2.xml. Application B invokes application A but it has a different log4j config file in its resource directory.
>
> When there are multiple log4j2.xml files in the path how are they used/found? Are they additive? Does it just use the first one it finds?
>
> Thanks,
> Arwen
>
>
>
> This electronic mail message contains information that (a) is or
> may be CONFIDENTIAL, PROPRIETARY IN NATURE, OR OTHERWISE
> PROTECTED
> BY LAW FROM DISCLOSURE, and (b) is intended only for the use of
> the addressee(s) named herein. If you are not an intended
> recipient, please contact the sender immediately and take the
> steps necessary to delete the message completely from your
> computer system.
>
> Not Intended as a Substitute for a Writing: Notwithstanding the
> Uniform Electronic Transaction Act or any other law of similar
> effect, absent an express statement to the contrary, this e-mail
> message, its contents, and any attachments hereto are not
> intended
> to represent an offer or acceptance to enter into a contract and
> are not otherwise intended to bind this sender,
> barnesandnoble.com
> llc, barnesandnoble.com inc. or any other person or entity.
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Re: Multiple configuration files?
Posted by Matt Sicker <bo...@gmail.com>.
Only one file is used. If you want to combine multiple ones, you could use
XInclude or create a custom ConfigurationFactory.
On 8 August 2014 13:28, Arwen Pond <ap...@book.com> wrote:
> I have multiple applications that use log4j. Some depend on others. For
> example application A can be run independently and has a log4j config file
> under src/main/resources/log4j2.xml. Application B invokes application A
> but it has a different log4j config file in its resource directory.
>
> When there are multiple log4j2.xml files in the path how are they
> used/found? Are they additive? Does it just use the first one it finds?
>
> Thanks,
> Arwen
>
>
>
> This electronic mail message contains information that (a) is or
> may be CONFIDENTIAL, PROPRIETARY IN NATURE, OR OTHERWISE
> PROTECTED
> BY LAW FROM DISCLOSURE, and (b) is intended only for the use of
> the addressee(s) named herein. If you are not an intended
> recipient, please contact the sender immediately and take the
> steps necessary to delete the message completely from your
> computer system.
>
> Not Intended as a Substitute for a Writing: Notwithstanding the
> Uniform Electronic Transaction Act or any other law of similar
> effect, absent an express statement to the contrary, this e-mail
> message, its contents, and any attachments hereto are not
> intended
> to represent an offer or acceptance to enter into a contract and
> are not otherwise intended to bind this sender,
> barnesandnoble.com
> llc, barnesandnoble.com inc. or any other person or entity.
--
Matt Sicker <bo...@gmail.com>
Re: Multiple configuration files?
Posted by Ralph Goers <ra...@dslextreme.com>.
Arwen,
Please note that the paragraphs below indicating the message is proprietary cannot apply to this message. This is a public mailing list and this message will be archived forever in at least 3 other places not under the control of the Apache Software Foundation. Please make sure to remove these from future messages.
Ralph
On Aug 8, 2014, at 11:28 AM, Arwen Pond <ap...@book.com> wrote:
> I have multiple applications that use log4j. Some depend on others. For example application A can be run independently and has a log4j config file under src/main/resources/log4j2.xml. Application B invokes application A but it has a different log4j config file in its resource directory.
>
> When there are multiple log4j2.xml files in the path how are they used/found? Are they additive? Does it just use the first one it finds?
>
> Thanks,
> Arwen
>
>
>
> This electronic mail message contains information that (a) is or
> may be CONFIDENTIAL, PROPRIETARY IN NATURE, OR OTHERWISE
> PROTECTED
> BY LAW FROM DISCLOSURE, and (b) is intended only for the use of
> the addressee(s) named herein. If you are not an intended
> recipient, please contact the sender immediately and take the
> steps necessary to delete the message completely from your
> computer system.
>
> Not Intended as a Substitute for a Writing: Notwithstanding the
> Uniform Electronic Transaction Act or any other law of similar
> effect, absent an express statement to the contrary, this e-mail
> message, its contents, and any attachments hereto are not
> intended
> to represent an offer or acceptance to enter into a contract and
> are not otherwise intended to bind this sender,
> barnesandnoble.com
> llc, barnesandnoble.com inc. or any other person or entity.
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