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From: Matt Sicker <boards@gmail.com>
Date: Wed, 24 May 2017 11:20:06 -0500
Message-ID: <CACmp6ko-ikR5ujBWAmqNnf-baBRdrhjXEGqkTX_-j5j7qGfGkA@mail.gmail.com>
Subject: Re: Using Custom Layout for Log4j2 in Karaf 4.1.x...
To: Karaf Developers List <dev@karaf.apache.org>
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archived-at: Wed, 24 May 2017 16:20:15 -0000

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It could be a bug in log4j2 itself rather than pax-logging. I worked on
some OSGi support in log4j2 a while back, and I'm not sure if this is a new
issue or an existing one.

On 24 May 2017 at 05:43, James Carman <james@carmanconsulting.com> wrote:

> I tried adding pax-logging-service to startup.properties (after putting i=
t
> into the system repo) and I still have the issue. So, the ultimate issue
> isn't the fragment host necessarily. My issue is that it can't fine my
> custom layout class. I've tried using the name from the @Plugin annotatio=
n.
> I've tried using the fully-qualified class name. Nothing seems to work.
> Here's the declaration of my layout:
>
> @Plugin(name =3D "MyJsonLayout", category =3D Node.CATEGORY, elementType =
=3D
> Layout.ELEMENT_TYPE, printObject =3D true)
> public class MyJsonLayout extends AbstractStringLayout {
> ...
> }
>
> and here's what I've changed in the logging config file:
>
> log4j2.rootLogger.appenderRef.RollingFile.ref =3D RollingFile
> # Rolling file appender
> log4j2.appender.rolling.type =3D RollingRandomAccessFile
> log4j2.appender.rolling.name =3D RollingFile
> log4j2.appender.rolling.fileName =3D ${karaf.home}/log/aetos.log
> log4j2.appender.rolling.filePattern =3D ${karaf.home}/log/aetos.log.%i
> # uncomment to not force a disk flush
> log4j2.appender.rolling.immediateFlush =3D false
> log4j2.appender.rolling.append =3D true
> log4j2.appender.rolling.layout.type =3D com.myco.log4j.json.MyJsonLayout
> log4j2.appender.rolling.policies.type =3D Policies
> log4j2.appender.rolling.policies.size.type =3D SizeBasedTriggeringPolicy
> log4j2.appender.rolling.policies.size.size =3D 200MB
>
> As I said, I tried just using layout.type =3D MyJsonLayout, but that does=
n't
> work either.  Do we have an example where something like this works that =
I
> can reverse engineer?
>
> Thanks,
>
> James
>
> On Tue, May 23, 2017 at 7:03 PM James Carman <james@carmanconsulting.com>
> wrote:
>
> > I am trying to use a custom layout and I'm following the examples (I
> > think).  We had one that worked in Karaf 3.0.x.  Anyway, I set up the
> > fragment host like this:
> >
> > <plugin>
> >   <groupId>org.apache.felix</groupId>
> >   <artifactId>maven-bundle-plugin</artifactId>
> >   <version>3.3.0</version>
> >   <extensions>true</extensions>
> >   <inherited>true</inherited>
> >   <configuration>
> >     <instructions>
> >
> > <Fragment-Host>org.ops4j.pax.logging.pax-logging-service</Fragment-Host=
>
> >     </instructions>
> >   </configuration>
> > </plugin>
> >
> > However, my bundle will not resolve this way. I don't see that bundle
> > being loaded in Karaf 4.1.1:
> >  karaf@root()> list -t 0 -s | grep -i log 19:01:18
> >  5 =E2=94=82 Active =E2=94=82 8 =E2=94=82 1.9.1 =E2=94=82 org.ops4j.pax=
.logging.pax-logging-api
> >  6 =E2=94=82 Active =E2=94=82 8 =E2=94=82 1.9.1 =E2=94=82 org.ops4j.pax=
.logging.pax-logging-log4j2
> > 36 =E2=94=82 Active =E2=94=82 30 =E2=94=82 4.1.1 =E2=94=82 org.apache.k=
araf.log.core
> >
> > I tried binding to "org.ops4j.pax.logging.pax-logging-api", but that
> > didn't work either.  Did this process change for 4.1.x?
> >
>


--=20
Matt Sicker <boards@gmail.com>

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