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https://issues.apache.org/jira/browse/KARAF-5674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Boban Petkovic updated KARAF-5674:
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Description:
While migrating our application to work on karaf 4.2.0 (once it got released) I
hit an issue with class loader while testing on karaf 4.2.0 M2. I will try to
explain it simple:
Let say I have bundle A that contains REST endpoints (CXF 3.2.2). I use dosgi
to register CXF endpoints. From REST endpoint (in bundle A) we invoke some code
from bundle B that uses aws-java-sdk-osgi bundle (version 1.11.272). This fails
with the error:
javax.xml.stream.XMLInputFactory: Provider com.ctc.wstx.stax.WstxInputFactory
not found
The same code works on karaf 4.1.5 and karaf 4.0.7 that we use at the moment.
After some investigation I figured out that the context of class loader used to
invoke the code from our bundles is org.apache.cxf.cxf-rt-transports-http. When
I tried something like this it worked fine:
{code:java}
ClassLoader tccl = Thread.currentThread() .getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
AWS SDK calls that fails (from bundle B)
Thread.currentThread().setContextClassLoader(tccl);{code}
Has something been changed when it comes to class loading mechanism in 4.2.0?
While testing the same code on 4.1.5 I can see that the same context
(org.apache.cxf.cxf-rt-transports-http) is used, but it works fine.
was:
While migrating our application to work on karaf 4.2.0 (once it got released) I
hit an issue with class loader while testing on karaf 4.2.0 M2. I will try to
explain it simple:
Let say I have bundle A that contains REST endpoints (CXF 3.2.2). I use dosgi
to register CXF endpoints. From REST endpoint (in bundle A) we invoke some code
from bundle B that uses aws-java-sdk-osgi bundle (version 1.11.272). This fails
with the error:
javax.xml.stream.XMLInputFactory: Provider com.ctc.wstx.stax.WstxInputFactory
not found
The same code works on karaf 4.1.5 and karaf 4.0.7 that we use at the moment.
After some investigation I figured out that the context of class loader used to
invoke the code from our bundles is org.apache.cxf.cxf-rt-transports-http. When
I tried something like this it works fine:
{code:java}
ClassLoader tccl = Thread.currentThread() .getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
AWS SDK calls that fails (from bundle B)
Thread.currentThread().setContextClassLoader(tccl);{code}
Has something been changed when it comes to class loading mechanism in 4.2.0?
While testing the same code on 4.1.5 I can see that the same context
(org.apache.cxf.cxf-rt-transports-http) is used, but it works fine.
> Karaf 4.2.0 M2 class path issue
> -------------------------------
>
> Key: KARAF-5674
> URL: https://issues.apache.org/jira/browse/KARAF-5674
> Project: Karaf
> Issue Type: Bug
> Components: karaf-osgi
> Affects Versions: 4.2.0.M2
> Reporter: Boban Petkovic
> Priority: Critical
>
> While migrating our application to work on karaf 4.2.0 (once it got released)
> I hit an issue with class loader while testing on karaf 4.2.0 M2. I will try
> to explain it simple:
> Let say I have bundle A that contains REST endpoints (CXF 3.2.2). I use dosgi
> to register CXF endpoints. From REST endpoint (in bundle A) we invoke some
> code from bundle B that uses aws-java-sdk-osgi bundle (version 1.11.272).
> This fails with the error:
> javax.xml.stream.XMLInputFactory: Provider com.ctc.wstx.stax.WstxInputFactory
> not found
> The same code works on karaf 4.1.5 and karaf 4.0.7 that we use at the moment.
> After some investigation I figured out that the context of class loader used
> to invoke the code from our bundles is org.apache.cxf.cxf-rt-transports-http.
> When I tried something like this it worked fine:
> {code:java}
> ClassLoader tccl = Thread.currentThread() .getContextClassLoader();
> Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
> AWS SDK calls that fails (from bundle B)
> Thread.currentThread().setContextClassLoader(tccl);{code}
> Has something been changed when it comes to class loading mechanism in 4.2.0?
> While testing the same code on 4.1.5 I can see that the same context
> (org.apache.cxf.cxf-rt-transports-http) is used, but it works fine.
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