| Re: [ecf-dev] Fun with remote services part 1 |
| Hi Scott, thanks for explaining the issues regarding OSGi and credentials for authentication. Say I will choose solution #1. Once I've created an IContainer instance, how would I now tell my services that they can be used remotely. I've read that I need to register the IContainer instance as a service in the host side OSGi service registry? The IContainer implementation will then listen for service registrations containing e.g. the following properties and publish my service: <property name="service.exported.interfaces" type="String" value="*"/> <property name="service.exported.configs" type="String" value="ecf.xmpp.smack"/> Is this the way it works? Would the IContainer implementation listen for my custom service registrations and check according to the provided properties whether to publish a service remotely or not? I've done this so far programmatically using the IContainer instance: public synchronized void registerRemoteService(String serviceName, Object impl, ID[] targetIDs) { Dictionary<String, ID[]> props = new Hashtable<String, ID[]>(); props.put(Constants.SERVICE_REGISTRATION_TARGETS, targetIDs); // register ECF remote service getRemoteServiceContainerAdapter().registerRemoteService( new String[] { serviceName }, impl, props); } In case this is the way it works: can I provide the properties above at runtime using the ConfigAdminService?
My question focused on how do consumer retrieve a remote service proxy using DS. So far I wrote a util class that can retrieve remote services for a specific XMPP ID in this way: public synchronized <T> List<T> getRemoteService(Class<T> service, ID[] filterIDs, String filter) throws ECFException, InvalidSyntaxException { List<T> remoteServices = new ArrayList<T>(); IRemoteServiceContainerAdapter remoteServiceContainerAdapter = getRemoteServiceContainerAdapter(); /* 1. get available services */ IRemoteServiceReference[] refs = remoteServiceContainerAdapter .getRemoteServiceReferences(filterIDs, service.getName(), filter); /* 2. get the proxies for service references */ for (int serviceNumber = 0; serviceNumber < refs.length; serviceNumber++) { IRemoteService remoteService = remoteServiceContainerAdapter .getRemoteService(refs[serviceNumber]); T castedService = service.cast(remoteService.getProxy()); assert castedService != null : "castedService != null"; remoteServices.add(castedService); } return remoteServices; } What I did not understand is how does DS retrieve remote service proxies? As OSGi has no standard way to provide credentials I guess this won't work for me using XMPP. But in case the IContainer solution I've mentioned above works, could it be a solution to: 1. create an IContainer instance with credentials 2. register the instance as an OSGi service in a client side service registry 2. create DS components with the properties I've mentioned above? I'm sorry for all these questions but it is still difficult for me to understand how ECF works with DS and whether I can use it for my work. Regards, Eugen Am Jun 14, 2010 um 15:54 schrieb Scott Lewis:
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