OBR is only necessary for cases where you want to calculate the
transitive closure of dependencies for a given [set of] bundle[s]. In
your case, you know your updated modules, so you can probably just go
ahead an update them and do a refresh and then you are done.
-> richard
On 3/18/09 11:15 AM, Damon Jacobsen wrote:
I am trying to write a "bootstrap" client. I want to be able to dynamically
push new application modules or update running modules without having to
have my users even aware that I am doing so. My thought is to back all the
bundles in a database layer which the application monitors for loading,
unloading and updating modules as necessary. Perhaps OBR is not even
necessary for this functionality. I am just exploring all options for usage
of OSGi.
Damon
On Wed, Mar 18, 2009 at 5:55 AM, Richard S. Hall<[email protected]>wrote:
Typically, OBR is used by installing the bundle into a running framework,
but I suppose it is possible to use it like you are trying to do. You will
have to make sure to export its classes from the system bundle.
To set the URL to the repository.xml file, you must specify it with
"obr.repository.url" in the configuration properties.
I am not sure what you mean by saying you are trying to provide a dynamic
layer under your application to update its libraries. Your application has
to be built from bundles and installed inside the OSGi framework to get this
to work, is that your plan?
-> richard
On 3/17/09 6:19 PM, Damon Jacobsen wrote:
Richard,
Using that page as a reference, I tried this:
Felix felix = new Felix(configMap);
felix.start();
BundleContext bundleContext = felix.getBundleContext();
RepositoryAdmin admin = new RepositoryAdminImpl(bundleContext,null);
Resolver resolver = admin.resolver();
for (Resource resource : admin.discoverResources("*"))
System.out.println(resource.getId());
I am trying to start really simple, but this code returns an NPE. Should I
be using the Felix BundleContext? How do I spcify the configuration xml to
the Felix context? Is this the proper way to discover resources? I am
trying
to provide a dynamic layer under my application so that I may update
libraries on the fly, but I don't seem to be getting how this all works.
Damon
On Tue, Mar 17, 2009 at 2:31 PM, Richard S. Hall<[email protected]
wrote:
I am not sure how much documentation is available. You can search for the
original RFC 112, which Peter Kriens made available from one of his
blogs.
There is our web page on our impl:
http://felix.apache.org/site/apache-felix-osgi-bundle-repository.html
The approach is fairly simple. You populate the OBR repo using a URL to a
repository.xml file. You can then use the OBR service interface to
discover
available bundles. You can tell OBR which bundles you are interested in
using the Resolver interface, then it will resolve their transitive
dependencies and deploy them for you into your running framework.
That's about it.
-> richard
On 3/17/09 4:16 PM, Damon Jacobsen wrote:
I sent an email earlier trying to figure out some basics. I think I have
gotten some sort of embedded Felix framework running. I am trying to
figure
out how to discover and activate bundles using OBR. I am assuming that
it
works similar to Maven in the sense that there is some ways to say I am
looking for artifact X at revision Y and OBR will resolve it and load my
bundle. Are there any good articles for using OBR, possibly within an
embedded context? Any help would be appreciated.
Damon Jacobsen
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