opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/BindingDOMRpcImplementationAdapter.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.md.sal.binding.impl;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.cache.Cache;
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.util.concurrent.CheckedFuture;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.lang.reflect.Method;
  16 import java.util.HashMap;
  17 import java.util.Map;
  18 import java.util.Map.Entry;
  19 import java.util.concurrent.ExecutionException;
  20 import javax.annotation.Nonnull;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  24 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  25 import org.opendaylight.mdsal.binding.dom.adapter.BindingDataAware;
  26 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  27 import org.opendaylight.yangtools.yang.binding.DataObject;
  28 import org.opendaylight.yangtools.yang.binding.RpcService;
  29 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  30 import org.opendaylight.yangtools.yang.binding.util.RpcServiceInvoker;
  31 import org.opendaylight.yangtools.yang.common.QName;
  32 import org.opendaylight.yangtools.yang.common.RpcResult;
  33 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  34 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  35 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  36
  37 public class BindingDOMRpcImplementationAdapter implements DOMRpcImplementation {
  38
  39     private static final Cache<Class<?>, RpcServiceInvoker> SERVICE_INVOKERS =
  40             CacheBuilder.newBuilder().weakKeys().build();
  41
  42     private final BindingNormalizedNodeSerializer codec;
  43     private final RpcServiceInvoker invoker;
  44     private final RpcService delegate;
  45     private final QName inputQname;
  46
  47     <T extends RpcService> BindingDOMRpcImplementationAdapter(final BindingNormalizedNodeSerializer codec,
  48             final Class<T> type, final Map<SchemaPath, Method> localNameToMethod, final T delegate) {
  49         try {
  50             this.invoker = SERVICE_INVOKERS.get(type, () -> {
  51                 final Map<QName, Method> map = new HashMap<>();
  52                 for (Entry<SchemaPath, Method> e : localNameToMethod.entrySet()) {
  53                     map.put(e.getKey().getLastComponent(), e.getValue());
  54                 }
  55
  56                 return RpcServiceInvoker.from(map);
  57             });
  58         } catch (ExecutionException e) {
  59             throw new IllegalArgumentException("Failed to create invokers for type " + type, e);
  60         }
  61
  62         this.codec = Preconditions.checkNotNull(codec);
  63         this.delegate = Preconditions.checkNotNull(delegate);
  64         inputQname = QName.create(BindingReflections.getQNameModule(type), "input").intern();
  65     }
  66
  67     @Nonnull
  68     @Override
  69     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final DOMRpcIdentifier rpc,
  70             final NormalizedNode<?, ?> input) {
  71         final SchemaPath schemaPath = rpc.getType();
  72         final DataObject bindingInput = input != null ? deserialize(rpc.getType(), input) : null;
  73         final ListenableFuture<RpcResult<?>> bindingResult = invoke(schemaPath, bindingInput);
  74         return transformResult(bindingResult);
  75     }
  76
  77     private DataObject deserialize(final SchemaPath rpcPath, final NormalizedNode<?, ?> input) {
  78         if (input instanceof BindingDataAware) {
  79             return ((BindingDataAware) input).bindingData();
  80         }
  81         final SchemaPath inputSchemaPath = rpcPath.createChild(inputQname);
  82         return codec.fromNormalizedNodeRpcData(inputSchemaPath, (ContainerNode) input);
  83     }
  84
  85     private ListenableFuture<RpcResult<?>> invoke(final SchemaPath schemaPath, final DataObject input) {
  86         return invoker.invokeRpc(delegate, schemaPath.getLastComponent(), input);
  87     }
  88
  89     private CheckedFuture<DOMRpcResult, DOMRpcException> transformResult(
  90             final ListenableFuture<RpcResult<?>> bindingResult) {
  91         return LazyDOMRpcResultFuture.create(codec, bindingResult);
  92     }
  93
  94 }