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PODynamism of services when using Aries blueprint
 

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  1. PODynamism of services when using Aries blueprint
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    <p>I'm building a caching system in my OSGI application where my initial thought was, ok when a service is registered I want to apply caching to, I just proxy that service and register the proxy with a very high service ranking.</p> <p>This almost works, depending on in which order my bundles are started. If the consumer is started last everything works, and also if I stop the caching bundle the consumer is fallbacking to the original implementation <strong>BUT</strong> if I restart the caching bundle then the consumer doesn't get the proxy version of the service.</p> <p>To make a simple example for proving this I made a simple bundle which registeres a know service by hand with a much higher ranking (ie. not creating proxies etc.) and the problem still remains, when the higher ranked service gets started the consumer still uses the lower ranked service.</p> <p>Do the dynamism of blueprint only applies in certain circumstances? </p> <ol> <li>Initial wiring -> choose the highest ranked service</li> <li>When wired service disappear -> choose the highest ranked service</li> <li>When a new service appear -> don't do anything</li> </ol> <p>Is there any way to get the behavior of 1 and 2 also on the 3:d case?</p> <p>Or is there a better way to accomplish what I'm trying to do? Ie. with HookEvent or similar?</p> <p>Thanks</p> <p><strong>EDIT:</strong> I solved this particular problem by updating used bundles after proxy registration, that seems to update the service wirings.</p> <pre><code>Bundle[] usingBundles = reference.getUsingBundles(); for(.....) { b.update(); } </code></pre>
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