| Is my p2.inf usage correct? [message #1066696] |
Wed, 03 July 2013 19:29 |
 Gerald Rosenberg
Messages: 106
Registered: July 2009 |
Senior Member |
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I am using Eclipse 4.3 and ObjectWeb ASM in a plugin to add some low level instrumentation to "org.eclipse.swt.widgets.Display". The plugin is not specific to an RCP application - primary use is intended with the standard Eclipse IDE workbench.
When launching the Eclipse workbench as an Eclipse application, the plugin works correctly, but when loaded into the workbench as a p2 installed plugin, the WeavingHook method is called after the Display.class is loaded.
I have put the following p2.inf in the META-INF directory of my weaving plugin. Unfortunately, it is not being recognized or is in someway not correct/sufficient to change the start level -- the WeavingHook is still called too late.
If I mark the plugin to be "unpacked" after the p2 install, the WeavingHook is *usually* called just in time to process Display.class. (So, the p2.inf is not working to load the plugin at start level 1, but instead the plugin is in a class loader race condition in the default start level 4?)
#create a requirement on the fragment we are creating
requires.0.namespace=org.eclipse.equinox.p2.iu
requires.0.name=configure.net.certiv.bent.core
requires.0.greedy=true
#create a IU fragment named configure.net.certiv.bent.core
units.0.id=configure.net.certiv.bent.core
units.0.provides.1.namespace=org.eclipse.equinox.p2.iu
units.0.provides.1.name=configure.net.certiv.bent.core
units.0.instructions.install=org.eclipse.equinox.p2.touchpoint.eclipse.installBundle(bundle:${artifact});
units.0.instructions.uninstall=org.eclipse.equinox.p2.touchpoint.eclipse.uninstallBundle(bundle:${artifact});
units.0.instructions.unconfigure=org.eclipse.equinox.p2.touchpoint.eclipse.setStartLevel(startLevel:-1); org.eclipse.equinox.p2.touchpoint.eclipse.markStarted(started:false);
units.0.instructions.configure=org.eclipse.equinox.p2.touchpoint.eclipse.setStartLevel(startLevel:1);org.eclipse.equinox.p2.touchpoint.eclipse.markStarted(started:true);
# add multiple sets of host requirements to ensure this p2.inf is selected
units.0.hostRequirements.1.namespace=osgi.bundle
units.0.hostRequirements.1.name=net.certiv.bent.core
units.0.hostRequirements.1.greedy=false
units.0.hostRequirements.2.namespace=org.eclipse.equinox.p2.eclipse.type
units.0.hostRequirements.2.name=bundle
units.0.hostRequirements.2.range=[1.0.0,2.0.0)
units.0.hostRequirements.2.greedy=false
units.0.requires.1.namespace=osgi.bundle
units.0.requires.1.name=net.certiv.bent.core
units.0.requires.1.greedy=false
The plugin is pretty much as minimal as I can make it -- the only dependencies are on the asm.jar and
Import-Package: org.osgi.framework;version="1.7.0",
org.osgi.framework.hooks.weaving;version="1.0.0",
org.osgi.service.prefs;version="1.1",
org.osgi.util.tracker;version="1.3.1"
Any suggestions as to what to change or try next would be appreciated.
Thanks...
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