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[libvirt] RFC: libvirt java bindings based on JNA



I would like to get some comments on an initial cut of the java bindings on top of JNA[1]. They are not 100% complete (see below), but they are good enough to be criticized. In addition, if there are features additions to the API which people are interested in, I would appreciate the feedback on that.

JNA is a java implementation of the Foreign Function Interface [2]. The main benefit is that it removes the need for all the nasty C glue code. What replaces it is pure java mapping files. If you look in the org.libvirt.jna package in the code, you will see that the 2928 lines of jni code have been replaced by 427 lines of java code. To be fair, some of the business logic from the C code is now in the org.libvirt package... but you get the point.

The original java API has remained the same. The open issues with the code are:

1) Authorization callback has not been tested.
2) GetUUID is not returning the correct int array.
3) Find by UUID is not working

These all are mapping issues to be worked out. The rest of the code should be working, but I would appreciate it being exercised. The main drawback to this approach is that it requires the use of java 1.6. I looked on EPEL, F10, and F11.. and java 1.6 and the JNA jar file are available so I did not believe this was an issue.

I will send a patch stream to the list, but you can also get the code via an SRPM [3] or via github [4].

-- bk

[1] https://jna.dev.java.net/
[2] http://en.wikipedia.org/wiki/Foreign_function_interface
[3] http://bkearney.fedorapeople.org/libvirt-java-0.3.0pre-1.fc10.src.rpm
[4] http://github.com/bkearney/libvirt-java/tree/jna


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