Hi, There is another glitch: the Configuration Admin Service may not available at all at the time your BundleActivator is called. So you would have to -- for example -- use something like a ServiceTracker (or better revert to using something like Declarative Services which gives you more control while at the same time removing the requirement to rely on OSGi API) to track the Configuration Admin Service.
Re Declarative Services (DS): As of the latest specification you can configure the components acting as services to only be activated and thus registered as services once configuration is available. DS also offers you the ability to have "default configuration" should a Configuration Admin configuration not be available. Regards Felix Am Freitag, den 19.11.2010, 00:38 +0100 schrieb Marcel Offermans: > That won't work: the fact that the configuration admin service is available > does not mean there will be a configuration available for you. And even if > there is, there will still be all kinds of timing issues. > > If your service needs to be configured before it can be used, don't publish > it until you got a valid configuration. > > Greetings, Marcel > > On 18 Nov 2010, at 17:32 , Wunden Tobias wrote: > > > Hi Leen, > > > > in the activator, you could ask the service registry for the config admin > > service and explicitly get the configuration from it, then using it to make > > a call to the updated() method of the ManagedService interface yourself. > > > > Make sure to add a reference to the config admin, otherwise your service > > might be started before it is available. The downside with that will be > > that your service goes down when the ConfigurationAdminService does. > > > > Tobias > > > > On 18.11.2010, at 17:24, "Leen Toelen" <[email protected]> wrote: > > > >> Hi, > >> > >> I have some trouble understanding the correlation between FileInstall > >> and ManagedServices. > >> > >> This is an activator: > >> public void start(BundleContext context) throws Exception { > >> MyImpl impl = new MyImpl(); //implements two interfaces, one of > >> which managedservice > >> > >> Properties properties = new Properties(); > >> properties.put(Constants.SERVICE_PID, "myservicepid"); > >> String[] interfaces = { ManagedService.class.getName(), > >> MyInterface.class.getName() }; > >> context.registerService(interfaces, impl, properties); > >> } > >> > >> and under my fileinstall managed directory I hava myservicepid.cfg > >> with key-value pairs in it. > >> > >> The question is when the services are registered and available to > >> listeners. > >> - when the activator is started > >> - after fileinstall is calls updated(Dictionary) on the ManagedService > >> (using ConfigurationAdmin) > >> > >> should the implementation check whether is has been configured or not, > >> or does felix do this for me? If not, is there a way to only register > >> myImpl as "MyInterface" after it has been configured? > >> > >> Regards, > >> Leen > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] > >> For additional commands, e-mail: [email protected] > >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
