1 files changed, 96 insertions, 0 deletions
diff --git a/infra/rpc/impl/src/main/java/io/fd/honeycomb/rpc/HoneycombDOMRpcService.java b/infra/rpc/impl/src/main/java/io/fd/honeycomb/rpc/HoneycombDOMRpcService.java
new file mode 100644
index 000000000..09f93db36
--- /dev/null
+++ b/infra/rpc/impl/src/main/java/io/fd/honeycomb/rpc/HoneycombDOMRpcService.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.honeycomb.rpc;
+
+import static net.javacrumbs.futureconverter.java8guava.FutureConverter.toListenableFuture;
+
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import java.util.concurrent.CompletableFuture;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcAvailabilityListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
+import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
+import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
+import org.opendaylight.yangtools.binding.data.codec.api.BindingNormalizedNodeSerializer;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.model.api.SchemaPath;
+
+public final class HoneycombDOMRpcService implements DOMRpcService {
+
+    private static final Function<? super Exception, DOMRpcException> ANY_EX_TO_RPC_EXCEPTION_MAPPER =
+        (Function<Exception, DOMRpcException>) e -> (e instanceof DOMRpcException)
+            ? (DOMRpcException) e
+            : new RpcException("RPC failed", e);
+
+    // TODO HONEYCOMB-161 what to use instead of deprecated BindingNormalizedNodeSerializer ?
+    private final BindingNormalizedNodeSerializer serializer;
+    private final RpcRegistry rpcRegistry;
+
+    public HoneycombDOMRpcService(@Nonnull final BindingNormalizedNodeSerializer serializer,
+                                  @Nonnull final RpcRegistry rpcRegistry) {
+        this.serializer = serializer;
+        this.rpcRegistry = rpcRegistry;
+    }
+
+    @Nonnull
+    @Override
+    public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final SchemaPath schemaPath,
+                                                                  @Nullable final NormalizedNode<?, ?> normalizedNode) {
+        DataObject input = null;
+        if (normalizedNode != null) {
+            // RPC input is optional
+            final SchemaPath nodePatch = schemaPath.createChild(normalizedNode.getNodeType());
+            input = serializer.fromNormalizedNodeRpcData(nodePatch, (ContainerNode) normalizedNode);
+        }
+        final CompletableFuture<DataObject> result = rpcRegistry.invoke(schemaPath, input).toCompletableFuture();
+        final ListenableFuture<DOMRpcResult> output = getDOMRpcResult(toListenableFuture(result));
+        return Futures.makeChecked(output, ANY_EX_TO_RPC_EXCEPTION_MAPPER);
+    }
+
+    private ListenableFuture<DOMRpcResult> getDOMRpcResult(final ListenableFuture<DataObject> invoke) {
+        return Futures.transform(
+            invoke,
+            (Function<DataObject, DOMRpcResult>) output -> {
+                final ContainerNode outputNode = serializer.toNormalizedNodeRpcData(output);
+                return new DefaultDOMRpcResult(outputNode);
+            });
+    }
+
+    @Nonnull
+    @Override
+    public <T extends DOMRpcAvailabilityListener> ListenerRegistration<T> registerRpcListener(@Nonnull final T t) {
+        return new ListenerRegistration<T>() {
+            @Override
+            public void close() {
+                // Noop
+            }
+
+            @Override
+            public T getInstance() {
+                return t;
+            }
+        };
+    }
+}