Neil you are everywhere my Friend! It is good to see people willing to help
others!
You got the understanding of the application correctly. My Application installs
bundles and all bundles live on single JVM.
I am able to install the felix "org.apache.felix.eventadmin" with version
"1.3.2" bundle.
Now pushing the events using the following example:
http://felix.apache.org/site/apache-felix-event-admin.html is not clear with as
how the casting will work.
if (ref != null) { EventAdmin eventAdmin = (EventAdmin)
context.getService(ref);
Here EventAdmin should be casted to what? The only class/package available from
felix is impl package and that does not have EventAdmin.
If I use import org.osgi.service.event.Event;import
org.osgi.service.event.EventAdmin; which I see also available through the same
felix bundle I get the following class cast
exception"java.lang.ClassCastException:
org.apache.felix.eventadmin.impl.security.EventAdminSecurityDecorator
incompatible with org.osgi.service.event.EventAdmin"
I am sure I am doing something wrong or missing something.
Any pointers are appreciated
Thanks
Masti
On Sunday, February 2, 2014 8:30 AM, Neil Bartlett <njbartl...@gmail.com> wrote:
On Sun, Feb 2, 2014 at 4:16 PM, masti whoknows <masti...@yahoo.com> wrote:
Thanks Marcel for the quick response.
>
>Can someone help clarify: Can I use EventAdmin to pass the event data from an
>non-osgi bundle to an osgi bundle? Or is the eventAdmin only used for
>communicating between osgi bundles?
>
Yes Event Admin can be used in a non-OSGi environment. However it is not a
remote or distributed event broker, it works purely within a single JVM
(although some people have built remoting gateways or bridges that work
alongside Event Admin).
Therefore if you're talking about using it with both non-OSGi and OSGi
artifacts then you probably mean you have an embedded OSGi framework in your
application. Assuming that's the case, then the embedding application can
interact with Event Admin by publishing an EventHandler interface into OSGi
using the system bundle's BundleContext. The limitation is that the API package
for Event Admin will need to be exported by the system bundle using the
FRAMEWORK_SYSTEM_PACKAGES_EXTRA property.
>My main application receiving the metrics data/event is non-osgi and it needs
>to forward this event/data to an osgi-bundle. I was using this before:
>bundleContext.registerService(SOME_DATA_TYPE, dataHolderMap, null);
>
Ah yes... I recall your StackOverflow question.
>This works fine for low volume of calls but starts to hang the thread gets
>blocked.
>
>Thanks
>Masti
>
>
>
>
>On Saturday, February 1, 2014 2:44 PM, Marcel Offermans
><marcel.offerm...@luminis.eu> wrote:
>
>On 01 Feb 2014, at 23:20 pm, masti whoknows <masti...@yahoo.com> wrote:
>
>> Here is simple Java code that I am using to install the EventAdmin bundle
>> //now install the EventAdmin: org.apache.felix.eventadmin 1.3.2
>> Bundle eventAdminBundle =
>> framework.getBundleContext().installBundle("org.apache.felix.eventadmin");
>> eventAdminBundle.start();Is this not the right way?
>
>No, as you can see from your own stacktrace, installBundle takes a location
>[1] which is interpreted as a URL. Alternatively, you can use the other
>installBundle method [2] that takes a location (which can then be anything)
>and an inputstream (to your bundle).
>
>That should at least get you to the next point. :)
>
>To learn more about embedding Felix, please read [3] and especially the
>"Host/Felix interaction" part of that document. It contains a lot of
>information related to what you're trying to do.
>
>Greetings, Marcel
>
>
>[1]
>http://www.osgi.org/javadoc/r4v43/core/org/osgi/framework/BundleContext.html#installBundle(java.lang.String)
>[2]
>http://www.osgi.org/javadoc/r4v43/core/org/osgi/framework/BundleContext.html#installBundle(java.lang.String,
> java.io.InputStream)
>
>[3]
>http://felix.apache.org/documentation/subprojects/apache-felix-framework/apache-felix-framework-launching-and-embedding.html
>
