binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/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.mdsal.binding.dom.adapter;
   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.JdkFutureAdapters;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import java.lang.reflect.Method;
  17 import java.util.HashMap;
  18 import java.util.Map;
  19 import java.util.Map.Entry;
  20 import java.util.concurrent.ExecutionException;
  21 import javax.annotation.Nonnull;
  22 import org.opendaylight.mdsal.binding.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
  23 import org.opendaylight.mdsal.dom.api.DOMRpcException;
  24 import org.opendaylight.mdsal.dom.api.DOMRpcIdentifier;
  25 import org.opendaylight.mdsal.dom.api.DOMRpcImplementation;
  26 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
  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.common.YangConstants;
  34 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  35 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  36 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  37
  38 public class BindingDOMRpcImplementationAdapter implements DOMRpcImplementation {
  39
  40     private static final Cache<Class<?>, RpcServiceInvoker> SERVICE_INVOKERS
  41             = CacheBuilder.newBuilder().weakKeys().build();
  42     // Default implementations are 0, we need to perform some translation, hence we have a slightly higher cost
  43     private static final int COST = 1;
  44
  45     private final BindingNormalizedNodeCodecRegistry codec;
  46     private final RpcServiceInvoker invoker;
  47     private final RpcService delegate;
  48     private final QName inputQname;
  49
  50     <T extends RpcService> BindingDOMRpcImplementationAdapter(final BindingNormalizedNodeCodecRegistry codec,
  51             final Class<T> type, final Map<SchemaPath, Method> localNameToMethod, final T delegate) {
  52         try {
  53             this.invoker = SERVICE_INVOKERS.get(type, () -> {
  54                 final Map<QName, Method> map = new HashMap<>();
  55                 for (Entry<SchemaPath, Method> e : localNameToMethod.entrySet()) {
  56                     map.put(e.getKey().getLastComponent(), e.getValue());
  57                 }
  58
  59                 return RpcServiceInvoker.from(map);
  60             });
  61         } catch (ExecutionException e) {
  62             throw new IllegalArgumentException("Failed to create invokers for type " + type, e);
  63         }
  64
  65         this.codec = Preconditions.checkNotNull(codec);
  66         this.delegate = Preconditions.checkNotNull(delegate);
  67         inputQname = YangConstants.operationInputQName(BindingReflections.getQNameModule(type)).intern();
  68     }
  69
  70     @Nonnull
  71     @Override
  72     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final DOMRpcIdentifier rpc,
  73             final NormalizedNode<?, ?> input) {
  74
  75         final SchemaPath schemaPath = rpc.getType();
  76         final DataObject bindingInput = input != null ? deserialize(rpc.getType(), input) : null;
  77         final ListenableFuture<RpcResult<?>> bindingResult = invoke(schemaPath, bindingInput);
  78         return transformResult(bindingResult);
  79     }
  80
  81     @Override
  82     public long invocationCost() {
  83         return COST;
  84     }
  85
  86     private DataObject deserialize(final SchemaPath rpcPath, final NormalizedNode<?, ?> input) {
  87         if (input instanceof LazySerializedContainerNode) {
  88             return ((LazySerializedContainerNode) input).bindingData();
  89         }
  90         final SchemaPath inputSchemaPath = rpcPath.createChild(inputQname);
  91         return codec.fromNormalizedNodeRpcData(inputSchemaPath, (ContainerNode) input);
  92     }
  93
  94     private ListenableFuture<RpcResult<?>> invoke(final SchemaPath schemaPath, final DataObject input) {
  95         return JdkFutureAdapters.listenInPoolThread(invoker.invokeRpc(delegate, schemaPath.getLastComponent(), input));
  96     }
  97
  98     private CheckedFuture<DOMRpcResult, DOMRpcException> transformResult(
  99             final ListenableFuture<RpcResult<?>> bindingResult) {
 100         return LazyDOMRpcResultFuture.create(codec, bindingResult);
 101     }
 102 }