[Engine-devel] Improve classpath building

Hello all, I would like to propose an improvement in the way we build class-paths in the tools associated to the engine. At the moment we have at least two different ways to build classpaths: 1. Hard coded in the scripts, with maybe some variables: CP=$EAR_LIB/engine-encryptutils.jar:$EAR_LIB/engine-compat.jar:... This depends a lot on where we place the jar files, and we need to place them in different places in different environments if we want to adhere to common packaging practices. 2. Use the build-classpath script: CP=`build-classpath engine-encryptutils engine-compat ...` This depends less on the place we put them, but it doesn't work in development environments where some jars are not installed to the proper system locations. None of these is good for all environments. I would like to replace this classpath building logic with an script that performs the task in an smarter way and that works in all our environments (production, development, Fedora, RHEL, etc). My proposal is to create a "engine-java" script that we should use always when invoking java programs. This script will receive the same parameters that the "java" launcher receives, but the "-cp" or "-classpath" options will contain not the absolute name of the jar files, but just a simple jar name instead, something like "commons-logging", "commons-codec" or "engineencryptutils". The script will extract the "-cp" or "-classpath" options given and use them to do a search of the jar files in the locations where they can be in different environments: /usr/share/java /usr/share/java/ovirt-engine /usr/share/ovirt-engine/engine.ear /usr/share/ovirt-engine/engine.ear/lib <your jboss development installation>/engine.ear <your jboss development installation>/engine.ear/lib In addition the script will check that all the give jar files exist and will abort the execution if any of them is missing. Find attached the initial version of the proposed script. Let me know what you think. Regards, Juan Hernandez -- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.