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.JdkFutureAdapters;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import java.lang.reflect.Method;
  17 import java.util.Map;
  18 import java.util.concurrent.Callable;
  19 import java.util.concurrent.ExecutionException;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  24 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
  25 import org.opendaylight.yangtools.yang.binding.DataObject;
  26 import org.opendaylight.yangtools.yang.binding.RpcService;
  27 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  28 import org.opendaylight.yangtools.yang.binding.util.RpcServiceInvoker;
  29 import org.opendaylight.yangtools.yang.common.QName;
  30 import org.opendaylight.yangtools.yang.common.QNameModule;
  31 import org.opendaylight.yangtools.yang.common.RpcResult;
  32 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  33 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  34 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  35
  36 public class BindingDOMRpcImplementationAdapter implements DOMRpcImplementation {
  37
  38     private static final Cache<Class<?>, RpcServiceInvoker> SERVICE_INVOKERS = CacheBuilder.newBuilder().weakKeys().build();
  39
  40     private final BindingNormalizedNodeCodecRegistry codec;
  41     private final RpcServiceInvoker invoker;
  42     private final RpcService delegate;
  43     private final QNameModule module;
  44
  45     public <T extends RpcService> BindingDOMRpcImplementationAdapter(final BindingNormalizedNodeCodecRegistry codec, final Class<T> type, final Map<SchemaPath, Method> localNameToMethod, final T delegate) {
  46         try {
  47             this.invoker = SERVICE_INVOKERS.get(type, new Callable<RpcServiceInvoker>() {
  48                 @Override
  49                 public RpcServiceInvoker call() {
  50                     return RpcServiceInvoker.from(type);
  51                 }
  52             });
  53         } catch (ExecutionException e) {
  54             throw new IllegalArgumentException("Failed to create invokers for type " + type, e);
  55         }
  56
  57         this.codec = Preconditions.checkNotNull(codec);
  58         this.delegate = Preconditions.checkNotNull(delegate);
  59         module = BindingReflections.getQNameModule(type);
  60     }
  61
  62     public QNameModule getQNameModule() {
  63         return module;
  64     }
  65
  66     @Override
  67     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final DOMRpcIdentifier rpc, final NormalizedNode<?, ?> input) {
  68         final SchemaPath schemaPath = rpc.getType();
  69         final DataObject bindingInput = input != null ? deserilialize(rpc.getType(),input) : null;
  70         final ListenableFuture<RpcResult<?>> bindingResult = invoke(schemaPath,bindingInput);
  71         return transformResult(schemaPath,bindingResult);
  72     }
  73
  74     private DataObject deserilialize(final SchemaPath rpcPath, final NormalizedNode<?, ?> input) {
  75         if (input instanceof LazySerializedContainerNode) {
  76             return ((LazySerializedContainerNode) input).bindingData();
  77         }
  78         final SchemaPath inputSchemaPath = rpcPath.createChild(QName.create(module,"input"));
  79         return codec.fromNormalizedNodeRpcData(inputSchemaPath, (ContainerNode) input);
  80     }
  81
  82
  83     private ListenableFuture<RpcResult<?>> invoke(final SchemaPath schemaPath, final DataObject input) {
  84         return JdkFutureAdapters.listenInPoolThread(invoker.invokeRpc(delegate, schemaPath.getLastComponent(), input));
  85     }
  86
  87     private CheckedFuture<DOMRpcResult, DOMRpcException> transformResult(final SchemaPath schemaPath,
  88             final ListenableFuture<RpcResult<?>> bindingResult) {
  89         return LazyDOMRpcResultFuture.create(codec, bindingResult);
  90     }
  91
  92 }