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Posted to dev@cocoon.apache.org by "Reinhard Poetz (JIRA)" <ji...@apache.org> on 2006/02/02 23:29:03 UTC
[jira] Created: (COCOON-1765) Logging
Logging
-------
Key: COCOON-1765
URL: http://issues.apache.org/jira/browse/COCOON-1765
Project: Cocoon
Type: New Feature
Components: - Blocks Framework
Reporter: Reinhard Poetz
[...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
(by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Ralph Goers (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524400 ]
Ralph Goers commented on COCOON-1765:
-------------------------------------
I don't care what is used as long as it is an interface that can have any implementation (including a proprietary logging framework) plugged in.
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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Re: [jira] Commented: (COCOON-1765) Logging
Posted by Niclas Hedhman <ni...@hedhman.org>.
On Thursday 13 April 2006 22:58, Reinhard Poetz (JIRA) wrote:
> [
> http://issues.apache.org/jira/browse/COCOON-1765?page=comments#action_12374
>349 ]
>
> Reinhard Poetz commented on COCOON-1765:
> ----------------------------------------
>
> Fortunatly one of our latest committers is working on an OSGi logging
> framework: http://wiki.ops4j.org/dokuwiki/doku.php?id=pax:logging
Pax Logging is about letting each thing use their preferred logging system,
but having it routed into a Log4J driven backend.
So far, it supports a native one, Log4J and Jakarta Commons Logging, and I am
trying to figure out how to support JDK logging as well.
Of course, I can add support for Avalon Logging API if there is interest. It
should not be too hard. Please advice.
Cheers
Niclas
[jira] Commented: (COCOON-1765) Logging
Posted by "Reinhard Poetz (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/COCOON-1765?page=comments#action_12374349 ]
Reinhard Poetz commented on COCOON-1765:
----------------------------------------
Fortunatly one of our latest committers is working on an OSGi logging framework: http://wiki.ops4j.org/dokuwiki/doku.php?id=pax:logging
> Logging
> -------
>
> Key: COCOON-1765
> URL: http://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Type: New Feature
> Components: - Blocks Framework
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Daniel Fagerstrom (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524403 ]
Daniel Fagerstrom commented on COCOON-1765:
-------------------------------------------
Pax logging supports all major logging framework in an OSGi friendly way. Currently I just use it as an (better) implementation of Commons Logging. All the classloading tricks of the ordinary Commons Logging implementation makes it frustrating to use in an OSGi environment.
The point with using the Pax OSGi logging service from OPS4J in combination with the Commons Logging implementation would be that the logging output would be available though the API of the OSGi logging service. But at this point I don't know whether that would be useful or not, so it can wait.
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Carsten Ziegeler (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524448 ]
Carsten Ziegeler commented on COCOON-1765:
------------------------------------------
Can we have such discussions in the mailing list please?
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Updated: (COCOON-1765) Logging
Posted by "Grzegorz Kossakowski (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Grzegorz Kossakowski updated COCOON-1765:
-----------------------------------------
Component/s: (was: - Servlet service framework)
- OSGi integration
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Ralph Goers (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524405 ]
Ralph Goers commented on COCOON-1765:
-------------------------------------
I looked at the link posted by Reinhard. While the doc clealy states that it supports several different logging frameworks the examples still have the client code using a particular implementation. In other words, it looks to me like I could create my own PAX implementation but if the client has coded to log4j's api then my implementation wouldn't work. Please correct me if I misunderstand how it works, but if that is the case then it doesn't meet the requirements.
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Ralph Goers (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524447 ]
Ralph Goers commented on COCOON-1765:
-------------------------------------
Daniel, all you did was repeat back what I said. It hasn't answered my concern.
In Cocoon 2.1 we use the Avalon logger API. We provide a couple of implementation but anyone can write an implementation of this API to plug in their own logging framework (as I have done).
As I understand the pages referenced above PAX will bind the client using a particular API with the implementation of that API in a separate bundle. So it looks to me that if Cocoon used the log4j api that it would be tied to the log4j pax bundle, which is unacceptable. If this is correct then it is a requirement that Cocoon 2.2 continue to use an abstract logging api such as the Avalon logger.
Is this clear or do I misunderstand what PAX does?
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Daniel Fagerstrom (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524437 ]
Daniel Fagerstrom commented on COCOON-1765:
-------------------------------------------
When I look at the same link I find client code examples for Log4J, Jakarta Commons Logging, SLF4J, Avalon Logging, JDK Logging, Knopflerfish Log and Pax Logging in the client code section. Also they are moving their documentation to Confluence, a newer version of the document can be found here http://wiki.ops4j.org/confluence/display/ops4j/Pax+Logging.
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - OSGi integration
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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[jira] Commented: (COCOON-1765) Logging
Posted by "Daniel Fagerstrom (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/COCOON-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524387 ]
Daniel Fagerstrom commented on COCOON-1765:
-------------------------------------------
I use Pax Logging in the whiteboard and it works well. But there is work left to do on logging configuration and on decide if the OSGi logiing service from OPS4J should be used or not.
> Logging
> -------
>
> Key: COCOON-1765
> URL: https://issues.apache.org/jira/browse/COCOON-1765
> Project: Cocoon
> Issue Type: New Feature
> Components: - Servlet service framework
> Reporter: Reinhard Poetz
>
> [...] But my main thoughts is that logging need to be a centralized service, common for all blocks (separate logging solutions for each block would be a pain).
> The logging implementation is contained in a block (that is installed early) and makes the logger available as a service that other block can get through the service manager. This way the logging implementation is chosen by the choice of logging block. Observe that I only is talking about the blocks fw, within a block an ordinary ECM can be set up and it will inject the logger in its managed objects through the usual Avalon style.
> Using the same logger interface everywhere is also practical I guess we continue to use the o.a.avalon.framework.logger.Logger one.
> (by Daniel Fagerstrom: http://marc.theaimsgroup.com/?l=xml-cocoon-dev&m=113889468124728&w=2)
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