date:20120503

log4j

2012-05-03 Thread maaruks

Is it possible to use log4j in karaf ?

I have log4j classes in my bundle but I cant access them:

try {
Class? aClass = Class.forName(org.apache.log4j.Appender);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}



java.lang.RuntimeException: java.lang.ClassNotFoundException:
org.apache.log4j.Appender not found by org.ops4j.pax.logging.pax-logging-api
[4]
...
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Appender not
found by org.ops4j.pax.logging.pax-logging-api [4]
at
org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:787)
at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
at
org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:645)
at
org.apache.felix.framework.resolver.WireImpl.getClass(WireImpl.java:99)
at
org.apache.felix.framework.ModuleImpl.searchImports(ModuleImpl.java:1390)
at
org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:722)
at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
at java.lang.Class.forName0(Native Method)[:1.6.0_26]
at java.lang.Class.forName(Class.java:169)[:1.6.0_26]


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Re: log4j

2012-05-03 Thread Achim Nierbeck

I'm not sure what you are trying to do, but log4j as slf4j and a
couple more logging framworks are supported by Karaf.
We use Pax Logging for this, log4j is even the underlying
implementation for logging.
If you want to use your own appenders you need to take special care for this.

Regards, Achim

2012/5/3 maaruks maris.orbid...@gmail.com:
 Is it possible to use log4j in karaf ?

 I have log4j classes in my bundle but I cant access them:

        try {
            Class? aClass = Class.forName(org.apache.log4j.Appender);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }



 java.lang.RuntimeException: java.lang.ClassNotFoundException:
 org.apache.log4j.Appender not found by org.ops4j.pax.logging.pax-logging-api
 [4]
 ...
 Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Appender not
 found by org.ops4j.pax.logging.pax-logging-api [4]
    at
 org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:787)
    at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
    at
 org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
    at
 org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:645)
    at
 org.apache.felix.framework.resolver.WireImpl.getClass(WireImpl.java:99)
    at
 org.apache.felix.framework.ModuleImpl.searchImports(ModuleImpl.java:1390)
    at
 org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:722)
    at org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
    at
 org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
    at java.lang.Class.forName0(Native Method)[:1.6.0_26]
    at java.lang.Class.forName(Class.java:169)[:1.6.0_26]


 --
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 http://karaf.922171.n3.nabble.com/log4j-tp3958839.html
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-- 

Apache Karaf http://karaf.apache.org/ Committer  PMC
OPS4J Pax Web http://wiki.ops4j.org/display/paxweb/Pax+Web/
Committer  Project Lead
OPS4J Pax Vaadin http://team.ops4j.org/wiki/display/PAXVAADIN/Home
Commiter  Project Lead
blog http://notizblog.nierbeck.de/

Re: log4j

2012-05-03 Thread Guillaume Nodet

Custom appenders can be deployed by using fragments attached to the
pax-logging-service bundle fwiw.

On Thu, May 3, 2012 at 1:21 PM, Achim Nierbeck bcanh...@googlemail.comwrote:

 I'm not sure what you are trying to do, but log4j as slf4j and a
 couple more logging framworks are supported by Karaf.
 We use Pax Logging for this, log4j is even the underlying
 implementation for logging.
 If you want to use your own appenders you need to take special care for
 this.

 Regards, Achim

 2012/5/3 maaruks maris.orbid...@gmail.com:
  Is it possible to use log4j in karaf ?
 
  I have log4j classes in my bundle but I cant access them:
 
 try {
 Class? aClass = Class.forName(org.apache.log4j.Appender);
 } catch (ClassNotFoundException e) {
 throw new RuntimeException(e);
 }
 
 
 
  java.lang.RuntimeException: java.lang.ClassNotFoundException:
  org.apache.log4j.Appender not found by
 org.ops4j.pax.logging.pax-logging-api
  [4]
  ...
  Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Appender
 not
  found by org.ops4j.pax.logging.pax-logging-api [4]
 at
 
 org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:787)
 at
 org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
 at
 
 org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
 at
 
 org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:645)
 at
  org.apache.felix.framework.resolver.WireImpl.getClass(WireImpl.java:99)
 at
  org.apache.felix.framework.ModuleImpl.searchImports(ModuleImpl.java:1390)
 at
 
 org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:722)
 at
 org.apache.felix.framework.ModuleImpl.access$400(ModuleImpl.java:71)
 at
 
 org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1768)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[:1.6.0_26]
 at java.lang.Class.forName0(Native Method)[:1.6.0_26]
 at java.lang.Class.forName(Class.java:169)[:1.6.0_26]
 
 
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  View this message in context:
 http://karaf.922171.n3.nabble.com/log4j-tp3958839.html
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 --

 Apache Karaf http://karaf.apache.org/ Committer  PMC
 OPS4J Pax Web http://wiki.ops4j.org/display/paxweb/Pax+Web/
 Committer  Project Lead
 OPS4J Pax Vaadin http://team.ops4j.org/wiki/display/PAXVAADIN/Home
 Commiter  Project Lead
 blog http://notizblog.nierbeck.de/




-- 

Guillaume Nodet

Blog: http://gnodet.blogspot.com/

FuseSource, Integration everywhere
http://fusesource.com

Re: Is there a way to query osgi framework status (e.g. started)?

2012-05-03 Thread Jean-Baptiste Onofré


Hi,

you can add a BundleListener and check if the state of the bundle of ID 0.

Anyway it looks weird to me to define some logic at startup. Why not 
using a bootFeature or a startup bundle ?


Regards
JB

On 05/03/2012 05:28 PM, bobshort wrote:

We have bundles that do some intensive processing. Right now they are
starting as the framework is starting and slowing startup down considerably.
The osgi container is running on a plug computer so resources are minimal.

I want to start my processing only after the osgi container is fully
started. I've implemented a framework listener to detect when the framework
is started and then trigger my startup logic:

/public class EventListener implements FrameworkListener {

@Override
public void frameworkEvent(FrameworkEvent event) {
if (event.getType() == FrameworkEvent.STARTED) {
// Do startup logic here.
}
}
}/

This works if my bundles are installed before the framework is started, but
it obviously does not work for modules installed after the framework is
started.

Is there any way I can query the framework status from my bundle so I can
detect if the container is already fully started when the bundle is
installed? I'd like to do something like:

/
public void onBundleStarted() {
if (**test if framework already running**) {
// Do startup logic here.
}
}
/

Is this possible?

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Jean-Baptiste Onofré
jbono...@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

Re: Is there a way to query osgi framework status (e.g. started)?

2012-05-03 Thread Guillaume Nodet

There's no such thing as a 'started' state.  The osgi framework is fully
asynchronous and things can even be done on behalf of other bundles.  The
only real way to know if 'something' is started is to have this thing
register an osgi service when started and wait for this service to be
registered.  A lot of bundles do behave in this way so that you have
inter-bundles dependencies using services.  But at the end, 'started'
depends on what meaning you put behind this word, and that mostly depends
on what you deploy.

On Thu, May 3, 2012 at 5:28 PM, bobshort jer...@check-it.ca wrote:

 We have bundles that do some intensive processing. Right now they are
 starting as the framework is starting and slowing startup down
 considerably.
 The osgi container is running on a plug computer so resources are minimal.

 I want to start my processing only after the osgi container is fully
 started. I've implemented a framework listener to detect when the framework
 is started and then trigger my startup logic:

 /public class EventListener implements FrameworkListener {

@Override
public void frameworkEvent(FrameworkEvent event) {
if (event.getType() == FrameworkEvent.STARTED) {
// Do startup logic here.
}
}
 }/

 This works if my bundles are installed before the framework is started, but
 it obviously does not work for modules installed after the framework is
 started.

 Is there any way I can query the framework status from my bundle so I can
 detect if the container is already fully started when the bundle is
 installed? I'd like to do something like:

 /
public void onBundleStarted() {
if (**test if framework already running**) {
// Do startup logic here.
}
}
 /

 Is this possible?

 --
 View this message in context:
 http://karaf.922171.n3.nabble.com/Is-there-a-way-to-query-osgi-framework-status-e-g-started-tp3959588.html
 Sent from the Karaf - User mailing list archive at Nabble.com.




-- 

Guillaume Nodet

Blog: http://gnodet.blogspot.com/

FuseSource, Integration everywhere
http://fusesource.com

Re: Is there a way to query osgi framework status (e.g. started)?

2012-05-03 Thread bobshort

Thanks for the replies!

The main thing I'm trying to accomplish is to not start expensive processing
while the framework is booting. On a embedded ARM device it can take
framework startup times from 2 min to +5 min. 

I was thinking of trying a bundle with a very high run level and use it to
signal all other bundles to start. I'll give that go and see how well it
works.

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log4j

Re: log4j

Re: log4j

Re: Is there a way to query osgi framework status (e.g. started)?

Re: Is there a way to query osgi framework status (e.g. started)?

Re: Is there a way to query osgi framework status (e.g. started)?

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