| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.incubator.rpc.impl; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import java.net.URI; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.onlab.osgi.DefaultServiceDirectory; |
| import org.onlab.osgi.ServiceDirectory; |
| import org.onosproject.incubator.rpc.RemoteServiceContext; |
| import org.onosproject.incubator.rpc.RemoteServiceContextProvider; |
| import org.onosproject.incubator.rpc.RemoteServiceContextProviderService; |
| import org.onosproject.incubator.rpc.RemoteServiceProviderRegistry; |
| import org.onosproject.net.provider.ProviderId; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.annotations.Beta; |
| |
| /** |
| * Sample implementation of RemoteServiceContextProvider. |
| * |
| * Scheme: "local", calling corresponding local service on request. |
| * Only expected for testing until real RPC implementation is ready. |
| * |
| * Note: This is expected to be removed or separated out as separate bundle |
| * once other RPC implementaion became available. |
| */ |
| @Beta |
| @Component(immediate = true) |
| public class LocalRemoteServiceProvider implements RemoteServiceContextProvider { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private RemoteServiceContext theOne = new LocalServiceContext(); |
| |
| private static final ProviderId PID = new ProviderId("local", "org.onosproject.rpc.provider.local"); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected RemoteServiceProviderRegistry rpcRegistry; |
| |
| private final Map<Class<? extends Object>, Object> services = new ConcurrentHashMap<>(); |
| |
| private RemoteServiceContextProviderService providerService; |
| |
| @Activate |
| protected void activate() { |
| |
| services.put(SomeOtherService.class, new SomeOtherServiceImpl()); |
| |
| providerService = rpcRegistry.register(this); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| rpcRegistry.unregister(this); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public ProviderId id() { |
| return PID; |
| } |
| |
| @Override |
| public RemoteServiceContext get(URI uri) { |
| checkArgument(Objects.equals(uri.getScheme(), "local")); |
| return theOne; |
| } |
| |
| private final class LocalServiceContext implements RemoteServiceContext { |
| |
| private final ServiceDirectory directory = new DefaultServiceDirectory(); |
| |
| @Override |
| public <T> T get(Class<T> serviceClass) { |
| @SuppressWarnings("unchecked") |
| T service = (T) services.get(serviceClass); |
| if (service != null) { |
| return service; |
| } |
| // look up OSGi services on this host. |
| // provided to unblock development depending on RPC. |
| return directory.get(serviceClass); |
| } |
| } |
| |
| // Service provided by RPC can be non-OSGi Service |
| public static interface SomeOtherService { |
| String hello(); |
| } |
| |
| public static class SomeOtherServiceImpl implements SomeOtherService { |
| |
| @Override |
| public String hello() { |
| return "Goodbye"; |
| } |
| } |
| |
| } |