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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: [v2] Where to put appenders with dependency?
Date Thu, 06 Dec 2012 14:33:11 GMT
On Thu, Dec 6, 2012 at 9:30 AM, Christian Grobmeier <grobmeier@gmail.com>wrote:

> On Thu, Dec 6, 2012 at 3:21 PM, Gary Gregory <garydgregory@gmail.com>
> wrote:
> > Hi All:
> >
> > Please do not make it more complicated than it already is. I profoundly
> > dislike having to deal with projects that decide for me that I need to
> > reference an API, core, foo and bar jar, and one more jar for this and
> > another for that. I don't care, it's a hassle. Just give me an "all" jar
> > file (like CXF and Jetty give you the option to use). If I have to dig
> > around for yet another Spring jar, I'm going to smash a pumpkin. At
> > run-time, if you do not load a class, the deps are not needed. At compile
> > time, yes, you need the API deps, but Maven takes care of that for us.
>
> If you make a webapp with the mongo-db appender in it, you have that
> lib ready and waiting for you in the libs folder. Even if you don't
> need it. That not the problem. But what if i want to use a different
> version of mongodb-connector? Do I end up with 2 mongo-db connectors
> in the lib folders? Which one is taken?
>
> This case is often happening in log4j1 world, where people need to
> write exclude statements for jars which are provided by the container.
> While I like to keep things easy, I am not so sure we should put each
> and every appender and depenencies into the project at compile time.
>
> Maybe there is an option to make dependencies like mongodb-connector
> "provided"- then it would not be delivered, the user would need to
> take to create this dependency himself, if he wants to use the mongodb
> appender.
>

I think there is a concept in Ivy and Maven that a dependency is provided
by a container.

Gary


>
> Cheers
>
>
>
> > Gary
> >
> >
> > On Thu, Dec 6, 2012 at 9:09 AM, Christian Grobmeier <grobmeier@gmail.com
> >
> > wrote:
> >>
> >> Hi,
> >>
> >> lets say we would write an SMTPAppender. It would need dependencies to
> >> some mail framework. If you write an MongoDB Appender you wuold have
> >> dependencies to the Mongo-Connector.
> >>
> >> Both dependencies should not come with log4j2 because most people
> >> would not need them. Now my first idea was to create a new artifact
> >> like:
> >>
> >> <groupId>org.apache.logging.log4j.extensions</groupId>
> >> <artifactId>log4j-smtp</artifactId>
> >>
> >> They could inherit the log4j parent and put into the directory as
> >> submodules.
> >>
> >> But I believe it might be beneficial to create a separate repository,
> >> lets say log4j2-extensions and maintain them in some way like Apache
> >> Commons or Apache Onami, as independent artifacts with independent
> >> release cycle.
> >>
> >> If we would do that, we could have a Sandbox and a Proper folder.
> >> Sandbox could be opened to every ASF committer. I imagine there are a
> >> few people who might want to contribute their things. I know a few
> >> people who maintain some log4j1 related stuff, like osgi-log4j in
> >> Apache Sling or I think in Hadoop is something similar (log4j Hadoop
> >> appender)
> >>
> >> Any thoughts?
> >>
> >> Cheers
> >> Christian
> >>
> >> --
> >> http://www.grobmeier.de
> >> https://www.timeandbill.de
> >>
> >> ---------------------------------------------------------------------
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> >>
> >
> >
> >
> > --
> > E-Mail: garydgregory@gmail.com | ggregory@apache.org
> > JUnit in Action, 2nd Ed: http://bit.ly/ECvg0
> > Spring Batch in Action: http://bit.ly/bqpbCK
> > Blog: http://garygregory.wordpress.com
> > Home: http://garygregory.com/
> > Tweet! http://twitter.com/GaryGregory
>
>
>
> --
> http://www.grobmeier.de
> https://www.timeandbill.de
>
> ---------------------------------------------------------------------
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>
>


-- 
E-Mail: garydgregory@gmail.com | ggregory@apache.org
JUnit in Action, 2nd Ed: <http://goog_1249600977>http://bit.ly/ECvg0
Spring Batch in Action: <http://s.apache.org/HOq>http://bit.ly/bqpbCK
Blog: http://garygregory.wordpress.com
Home: http://garygregory.com/
Tweet! http://twitter.com/GaryGregory

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