ONOS-3322 Sketch of Remote Service

Change-Id: I9c16b56b8d02d7f3995eafb1bb96211089774ca7
diff --git a/incubator/rpc/src/main/java/org/onosproject/incubator/rpc/impl/RemoteServiceManager.java b/incubator/rpc/src/main/java/org/onosproject/incubator/rpc/impl/RemoteServiceManager.java
new file mode 100644
index 0000000..3b85173
--- /dev/null
+++ b/incubator/rpc/src/main/java/org/onosproject/incubator/rpc/impl/RemoteServiceManager.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 java.net.URI;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.incubator.rpc.RemoteServiceContext;
+import org.onosproject.incubator.rpc.RemoteServiceDirectory;
+import org.onosproject.incubator.rpc.RemoteServiceContextProvider;
+import org.onosproject.incubator.rpc.RemoteServiceContextProviderService;
+import org.onosproject.incubator.rpc.RemoteServiceProviderRegistry;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * Provides RemoteService related APIs.
+ */
+@Beta
+@Component(immediate = true)
+@Service
+public class RemoteServiceManager extends AbstractProviderRegistry
+    implements RemoteServiceDirectory, RemoteServiceProviderRegistry {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @Activate
+    protected void activate() {
+        log.info("Started");
+    }
+
+    @Deactivate
+    protected void deactivate() {
+        log.info("Stopped");
+    }
+
+    @Override
+    public RemoteServiceContext get(URI uri) {
+        RemoteServiceContextProvider factory = getProvider(uri.getScheme());
+        if (factory != null) {
+            return factory.get(uri);
+        }
+        throw new UnsupportedOperationException(uri.getScheme() + " not supported");
+    }
+
+    private final class InternalRemoteServiceContextProviderService
+            extends AbstractProviderService<RemoteServiceContextProvider>
+            implements RemoteServiceContextProviderService {
+
+        public InternalRemoteServiceContextProviderService(RemoteServiceContextProvider provider) {
+            super(provider);
+        }
+    }
+
+    // make this abstract method if slicing out
+    @Override
+    protected RemoteServiceContextProviderService createProviderService(RemoteServiceContextProvider provider) {
+        return new InternalRemoteServiceContextProviderService(provider);
+    }
+
+}