Launching a custom Java-class before starting the OSGi framework and during integration test

[Pratik Mehta]

Hi,

I am trying to find a way where I can do some task before starting the launching the framework from bndrun or before intergration test

For example: I need to start cassandra-daemon for my integration test and it is too complicated to do inside the osgi framework

Is there a way where I can provide an instruction in bnd.bnd or bndrun file to launch a java class which does the required tasks for me and then it starts the OSGi framework.

There is a similar feature in maven-pax plugin, it is possible to any tasks before launching the framework.

Thanks,

Pratik

[Peter Kriens]

You can put a JAR on the -runpath with an Embbded-Activator. This is a normal BundleActivator implementing class and the header ‘Embedded-Activator’ in the manifest point at that class. If you add 

public static boolean IMMEDIATE = true;

It gets started before any bundle. Otherwise it starts after the bundles have been started.

Kind regards,

Peter Kriens

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[Pratik Mehta]

Hi Peter,

Thanks for the answer. 

But this will still expect the jar in runpath to be an osgi bundle. What I am trying to look is to have a way to invoke any script (may be start an karaf instance) or invoke any class in non osgi jar.

Thanks,

Pratik

[Peter Kriens]

Well you can do either of those choices in an activator?

However, starting a Karaf instance sounds more like a bash script that starts this JAR and the Karaf JAR?

Kind regards,

Peter Kriens

[Pratik Mehta]

Hi Peter,

Thanks for the response. I will try with Embedded-Activator and see how that works for me.

Just to understand correctly, the jar that I add to -runpath need not be an OSGi bundle, right?

And about karaf: it would be bash script that starts the instance and I can achieve that using Embedded-Activator.

Thanks and Regards,

Pratik Mehta

[Peter Kriens]

The JAR does not have to be a bundle but it needs an Embedded-Activator header of course.

Kind regards,

Peter Kriens