camel-karaf 4.8.2: broken JAXBContext

[ivan-ra]

this code causes ClassNotFoundException (org.glassfish.jaxb.runtime.v2.ContextFactory not found) for routes deployed on karaf environment (works well in standalone routes):

import jakarta.xml.bind.JAXBContext;
...
JAXBContext ctx = JAXBContext.newInstance(ArrayList.class);

because camel-karaf has 2 incompatible features jaxb-runtime, and loads only 3.0.2 jaxb bundles:

    <feature name="jaxb-runtime" version="3.0.2">
        <feature version="[3,4)">jakarta-xml-bind</feature>
        <bundle dependency="true">mvn:com.sun.xml.bind/jaxb-core/3.0.2</bundle>
        <bundle dependency="true">mvn:com.sun.xml.bind/jaxb-impl/3.0.2</bundle>
        <bundle dependency="true">mvn:com.sun.xml.bind/jaxb-osgi/3.0.2</bundle>
    </feature>
    <feature name="jaxb-runtime" version="4.0.5">
        <feature version="[4,5)">jakarta-xml-bind</feature>
        <bundle dependency="true">mvn:com.sun.istack/istack-commons-runtime/4.1.2</bundle>
        <bundle dependency="true">mvn:org.glassfish.jaxb/jaxb-core/4.0.5</bundle>
        <bundle dependency="true">mvn:org.glassfish.jaxb/jaxb-runtime/4.0.5</bundle>
        <bundle>mvn:org.glassfish.hk2/osgi-resource-locator/2.5.0-b42</bundle>
    </feature>

karaf@root()> feature:list|grep jaxb-runtime
jaxb-runtime                             | 3.0.2            |          | Uninstalled | camel-4.8.2                       |
jaxb-runtime                             | 4.0.5            |          | Started     | camel-4.8.2                       |

and loads only packages v 3.0.2:

karaf@root()> list|grep JAXB
113 | Active |  50 | 4.8.2              | Apache Camel :: Karaf :: Core :: XML JAXB
131 | Active |  80 | 3.0.2              | JAXB OSGI
karaf@root()> package:exports -p org.glassfish.jaxb.runtime.v2
Package Name                                       | Version | ID  | Bundle Name
---------------------------------------------------+---------+-----+---------------------------
org.glassfish.jaxb.runtime.v2.model.annotation     | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.model.impl           | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.model.runtime        | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime.output       | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime.property     | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime.reflect.opt  | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime.reflect      | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime.unmarshaller | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.runtime              | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.schemagen.xmlschema  | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.schemagen            | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2.util                 | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi
org.glassfish.jaxb.runtime.v2                      | 3.0.2   | 131 | com.sun.xml.bind.jaxb-osgi

I have tried to change 4.0.5 bundle dependency value to "false", but it does not work because camel-blueprint requires jaxb bundles version 3.

[ivan-ra]

I think camel-blueprint needs to exclude jaxb3 dependencies (com.sun.xml.fastinfoset.* packages) and use jaxb v4*

[ivan-ra]

please remove unused imports from camel-blueprint manifest!
I removed this packages: com.sun.xml.* , org.jvnet.* from manifest, changed axb-runtime feature (dependency="false"), and now all works well (except camel-cxf, I think there are some unused imports too)

    <feature name="jaxb-runtime" version="4.0.5">
        <feature version="[4,5)">jakarta-xml-bind</feature>
        <bundle dependency="true">mvn:com.sun.istack/istack-commons-runtime/4.1.2</bundle>
        <bundle dependency="false">mvn:org.glassfish.jaxb/jaxb-core/4.0.5</bundle>
        <bundle dependency="false">mvn:org.glassfish.jaxb/jaxb-runtime/4.0.5</bundle>
        <bundle>mvn:org.glassfish.hk2/osgi-resource-locator/2.5.0-b42</bundle>
    </feature>

[essobedo]

Hi, thx for the ticket. If you don't mind, let's focus first on the problem before focusing on the solution knowing that the 2 versions of the feature were proposed for good reasons. So please provide steps to reproduce your issue with a simple camel route and/or propose a PR with a test case.

[jbonofre]

Thanks for the report. Do you have a simple reproducer ?

[ivan-ra]

in any route/bundle just add this code and try to install it:

JAXBContext ctx = JAXBContext.newInstance(ArrayList.class); //any class here

(bundle should use camel feature)

More precisely, route/bundle must use camel-blueprint (this requires jaxb v3) and contain java code like this (this requires jaxb v4):

JAXBContext ctx = JAXBContext.newInstance();

[ivan-ra]

for me works this solution:

• exclude unused imports from camel-blueprint manifest ( com.sun.xml.* , org.jvnet.* )
• change both jaxb-runtime features like this

    <feature name="jaxb-runtime" version="3.0.2">
        <feature version="[3,4)">jakarta-xml-bind</feature>
        <bundle dependency="false">mvn:com.sun.xml.bind/jaxb-core/3.0.2</bundle>
        <bundle dependency="false">mvn:com.sun.xml.bind/jaxb-impl/3.0.2</bundle>
        <bundle dependency="false">mvn:com.sun.xml.bind/jaxb-osgi/3.0.2</bundle>
    </feature>
    <feature name="jaxb-runtime" version="4.0.5">
        <feature version="[4,5)">jakarta-xml-bind</feature>
        <bundle dependency="true">mvn:com.sun.istack/istack-commons-runtime/4.1.2</bundle>
        <bundle dependency="false">mvn:org.glassfish.jaxb/jaxb-core/4.0.5</bundle>
        <bundle dependency="false">mvn:org.glassfish.jaxb/jaxb-runtime/4.0.5</bundle>
        <bundle>mvn:org.glassfish.hk2/osgi-resource-locator/2.5.0-b42</bundle>
    </feature>

after this route works well and camel-cxf starts too

karaf@root()> feature:list|grep jaxb-runtime
jaxb-runtime                             | 3.0.2            |          | Started     | camel-4.8.2                       |
jaxb-runtime                             | 4.0.5            |          | Started     | camel-4.8.2                       |
karaf@root()> list|grep JAXB
110 | Active |  50 | 4.8.2              | Apache Camel :: Karaf :: Core :: XML JAXB
128 | Active |  80 | 3.0.2              | Old JAXB Core
129 | Active |  80 | 3.0.2              | Old JAXB Runtime
130 | Active |  80 | 3.0.2              | JAXB OSGI
308 | Active |  80 | 4.0.5              | JAXB Core
309 | Active |  80 | 4.0.5              | JAXB Runtime