I think I know what's going on here. Since GlassFish is already running
on top of Felix, when you are trying to load Felix, Felix actually gets
loaded by one of GlassFish class loader that's parent of web app class
loader. The class loader that loads Felix classes does not really have
visibility to Java EE APIs like javax.servlet. So, even if you set
org.osgi.framework.bundle.parent=framework
it's not making any difference. You may like to launch Felix using a
custom class loader in OsgiManager.java:
ClassLoader cl = new
ClassLoader(Thread.currentThread().getContextClassLoader()) {
protected Class loadClass(String className) throws
ClassNotFoundException() {
if(className.startsWith("org.apache.felix")) {
URL url =
findResource(convertClassNameToResource(className));
if(url != null) {
byte[] bytes = readData(url);
defineClass(...);
}
}
return super.loadClass(className);
}
}
Use this class to load org.apache.felix.main.Main and FrameworkFactory
class. I understand this is really not an elegant solution.
An easier option is to switch off delegation flag in web app class
loader. You can do it by having a suitable sun-web.xml file in your web
app. Just google for it.
I understand you don't want to depend on specific container behavior,
but can you detect that your code is running inside an OSGi enabled
container and use that instead of launching a new one? e.g., the code
below gets you a BundleContext object in glassfish:
org.osgi.framework.BundleReference ref =
(BundleReference)javax.servlet.class.getClassLoader();
Bundle b = ref.getBundle();
BundleContext bctx = b.getBundleContext();
Use it to load your management bundle and pass control to it.
Thanks,
Sahoo
p.s: I have not really thought hard about this problem - so I am not
sure if all these will work or not in reality.
On Wednesday 23 June 2010 02:49 PM, glassfish_at_javadesktop.org wrote:
> Thanks for your answer.
>
> This is the Felix configuration file I'm currently using:
>
> ##############
> org.osgi.framework.storage.clean=onFirstInit
> org.osgi.framework.bundle.parent=framework
> felix.bootdelegation.implicit=true
> felix.log.level=4
> org.apache.felix.http.debug=true
> osgi.shell.telnet.port=7789
> ##############
>
> Reading the glassfish log what i can see is that Apache Felix HTTP Bridge doesn't load with such errror:
>
> [#|2010-06-23T10:56:13.312+0200|INFO|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=44;_ThreadName=Thread-1;|ERROR: Error starting file:/C:/glassfishv3/glassfish/domains/domain1/applications/webapp.felix/WEB-INF/bundles/org.apache.felix.http.bridge-2.0.4.jar (org.osgi.framework.BundleException: Unresolved constraint in bundle org.apache.felix.http.bridge [3]: package; (package=javax.servlet))|#]
>
> [#|2010-06-23T10:56:13.312+0200|SEVERE|glassfish3.0.1|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=44;_ThreadName=Thread-1;|org.osgi.framework.BundleException: Unresolved constraint in bundle org.apache.felix.http.bridge [3]: package; (package=javax.servlet)
> at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3263)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:1597)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1077)
> at org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:264)
> at java.lang.Thread.run(Thread.java:619)
> |#]
>
> I've also tried to put "app" as org.osgi.framework.bundle.parent value in place of "framework" but nothing changes.
>
> Adding following line to Felix configuration file:
>
> org.osgi.framework.system.packages.extra=javax.servlet, javax.servlet.http
>
> doesn't help :(
>
> Have you any other suggestions?
>
> Reason why I want to embed Felix in my WebApp is that I want to use it as a plugin framework and I need it to be independent from the underlying application server.
>
> Thanks in advance
>
>
>> You must have configured system bundle to export
>> javax.servlet package
>> for embedded Felix. What class loader have you
>> configured as the parent
>> class loader for embedded Felix? Try setting
>>
>> org.osgi.framework.bundle.parent=framework
>>
>> in your felix config file.
>>
>> Having said that why would you embed Felix in your
>> webapp deployed in
>> GlassFish v3 when GlassFish v3 is already deployed
>> inside Felix? Your
>> web app can already be deployed as an OSGi bundle
>> allowing it to take
>> advantage of both Java EE and OSGi APIs.
>>
>> Sahoo
>>
>>
> [Message sent by forum member 'dboltri']
>
> http://forums.java.net/jive/thread.jspa?messageID=475486
>
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