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static fields at LocationManager [message #1219068]

Sat, 30 November 2013 22:31

Lucas Galfaso

Messages: 3
Registered: July 2009

Junior Member

I just encounter myself into a weird case and would like to know if this is a bug or the expected behavior.

- Create a framework using ServiceLoader
- Start this framework (do some work) stop it
- Create a new framework (again using ServiceLoader and in the same JVM), with a different FRAMEWORK_STORAGE

Equinox ignores my configuration (or at least this part of it), keeps the same location where the previous framework was installed and all the previous bundles are present. It looks like all this falls to LocationManager having a static field installLocation. Is this the expected behavior?

Regards,
Lucas

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Re: static fields at LocationManager [message #1219204 is a reply to message #1219068]

Mon, 02 December 2013 15:41

Thomas Watson

Messages: 503
Registered: July 2009

Senior Member

This is not expected behavior. In Kepler, the classloader org.eclipse.osgi.launch.EquinoxFWClassLoader.EquinoxFWClassLoader is an attempt to isolate the statics in the framework implementation to allow multiple instances to exist in the same VM. But it seems that this is not working in your case.

For Luna, we have managed to get rid of all these statics that make launching multiple instances of the framework difficult. It would be good to hear if the latest I-Builds help you out.

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Re: static fields at LocationManager [message #1219755 is a reply to message #1219204]

Thu, 05 December 2013 16:09

Lucas Galfaso

Messages: 3
Registered: July 2009

Junior Member

Hi Thomas,
Used org.eclipse.osgi_3.10.0.v20131121-1552.jar (the latest integration build) and this is the result:

If I just stop the first framework (wait for it to stop), then create a new framework and start it

Exception in thread "Framework stop" java.lang.NullPointerException
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.notifyEventHooksPrivileged(EquinoxEventPublisher.java:186)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:146)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:75)
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:67)
at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:92)
at org.eclipse.osgi.container.Module.publishEvent(Module.java:456)
at org.eclipse.osgi.container.Module.doStop(Module.java:611)
at org.eclipse.osgi.container.Module.stop(Module.java:478)
at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:169)
at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:158)
at java.lang.Thread.run(Thread.java:724)

Now, if I want to uninstall all the bundles (as the only workaround that I found) before stopping the framework, the error is

java.lang.SecurityException: class "org.osgi.framework.ServiceObjects"'s signer information does not match signer information of other classes in the same package
at java.lang.ClassLoader.checkCerts(ClassLoader.java:944)
at java.lang.ClassLoader.preDefineClass(ClassLoader.java:658)
at java.lang.ClassLoader.defineClass(ClassLoader.java:786)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.eclipse.osgi.internal.framework.EquinoxBundle.createBundleContext(EquinoxBundle.java:684)
at org.eclipse.osgi.internal.framework.EquinoxBundle.getBundleContext(EquinoxBundle.java:671)
at org.eclipse.osgi.launch.Equinox.getBundleContext(Equinox.java:87)

Note: In this second case, uninstalling the bundles is performed from outside the OSGi container

Please let me know if you would like me to test something else or some other Equinox build

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Re: static fields at LocationManager [message #1219785 is a reply to message #1219755]

Thu, 05 December 2013 19:10

Thomas Watson

Messages: 503
Registered: July 2009

Senior Member

Hi,

This sounds very strange. Could you open a bug and provide a test launcher that we could use to reproduce?

Thanks Tom.

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Re: static fields at LocationManager [message #1219809 is a reply to message #1219785]

Thu, 05 December 2013 21:43

Lucas Galfaso

Messages: 3
Registered: July 2009

Junior Member

Found the issue with the latest setup. The issue was that I had osgi.core-5.0.0.jar at the classpath, by removing it, both issues got solved.

BTW, org.eclipse.osgi_3.10.0.v20131121-1552.jar fixes the original issue of the static location!

Forced question: Do you know when there will be an Equinox version with the fixed marked as stable?

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Re: static fields at LocationManager [message #1220245 is a reply to message #1219809]

Tue, 10 December 2013 15:11

Thomas Watson

Messages: 503
Registered: July 2009

Senior Member

The 3.10.0 version of org.eclipse.osgi will be released with the Luna release in June 2014. But the next stable milestone for the eclipse/equinox project of luna will happen at the end of this week (December 13). That will be milestone 4 (M4).

Tom.

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