binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/impl/operation/ActionServiceAdapter.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.javav2.dom.adapter.impl.operation;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.util.concurrent.FluentFuture;
  14 import com.google.common.util.concurrent.FutureCallback;
  15 import com.google.common.util.concurrent.Futures;
  16 import com.google.common.util.concurrent.ListenableFuture;
  17 import com.google.common.util.concurrent.MoreExecutors;
  18 import java.lang.reflect.InvocationHandler;
  19 import java.lang.reflect.Method;
  20 import java.lang.reflect.Proxy;
  21 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  22 import org.opendaylight.mdsal.binding.javav2.dom.codec.serialized.LazySerializedContainerNode;
  23 import org.opendaylight.mdsal.binding.javav2.spec.base.Action;
  24 import org.opendaylight.mdsal.binding.javav2.spec.base.Input;
  25 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  26 import org.opendaylight.mdsal.binding.javav2.spec.base.Output;
  27 import org.opendaylight.mdsal.binding.javav2.spec.base.RpcCallback;
  28 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  29 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  30 import org.opendaylight.mdsal.dom.api.DOMActionResult;
  31 import org.opendaylight.mdsal.dom.api.DOMActionService;
  32 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  33 import org.opendaylight.yangtools.yang.common.RpcResult;
  34 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  35 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  36
  37 @Beta
  38 class ActionServiceAdapter implements InvocationHandler {
  39
  40     private final Class<? extends Action<? extends TreeNode, ?, ?, ?>> type;
  41     private final BindingToNormalizedNodeCodec codec;
  42     private final DOMActionService delegate;
  43     private final Action<? extends TreeNode, ?, ?, ?> proxy;
  44     private final SchemaPath path;
  45
  46     ActionServiceAdapter(final Class<? extends Action<? extends TreeNode, ?, ?, ?>> type,
  47             final BindingToNormalizedNodeCodec codec, final DOMActionService domService) {
  48         this.type = requireNonNull(type);
  49         this.codec = requireNonNull(codec);
  50         this.delegate = requireNonNull(domService);
  51         this.path = getCodec().getActionPath(type);
  52         proxy = (Action<? extends TreeNode, ?, ?, ?>) Proxy.newProxyInstance(type.getClassLoader(),
  53             new Class[] { type }, this);
  54     }
  55
  56     public BindingToNormalizedNodeCodec getCodec() {
  57         return codec;
  58     }
  59
  60     public DOMActionService getDelegate() {
  61         return delegate;
  62     }
  63
  64     Action<? extends TreeNode, ?, ?, ?> getProxy() {
  65         return proxy;
  66     }
  67
  68     public Class<? extends Action<? extends TreeNode, ?, ?, ?>> getType() {
  69         return type;
  70     }
  71
  72     public SchemaPath getPath() {
  73         return path;
  74     }
  75
  76     @Override
  77     @SuppressWarnings("checkstyle:hiddenField")
  78     public Object invoke(final Object proxy, final Method method, final Object[] args) {
  79
  80         switch (method.getName()) {
  81             case "equals":
  82                 if (args.length == 1) {
  83                     return proxy == args[0];
  84                 }
  85                 break;
  86             case "hashCode":
  87                 if (args.length == 0) {
  88                     return System.identityHashCode(proxy);
  89                 }
  90                 break;
  91             case "toString":
  92                 if (args.length == 0) {
  93                     return type.getName() + "$Adapter{delegate=" + getDelegate() + "}";
  94                 }
  95                 break;
  96             case "invoke":
  97                 if (args.length == 3) {
  98                     final Input<?> input = (Input<?>) requireNonNull(args[0]);
  99                     final InstanceIdentifier<?> path = (InstanceIdentifier<?>) requireNonNull(args[1]);
 100                     final RpcCallback<Output> callback = (RpcCallback<Output>) requireNonNull(args[2]);
 101
 102                     final FluentFuture<? extends DOMActionResult> future = getDelegate().invokeAction(getPath(),
 103                         new DOMDataTreeIdentifier(LogicalDatastoreType.OPERATIONAL, getCodec().toNormalized(path)),
 104                         (ContainerNode) LazySerializedContainerNode.create(getPath(), (TreeNode) input,
 105                             getCodec().getCodecRegistry()));
 106                     //FIXME:this part is ugly, how to bridge FluentFuture and RpcCallback better?
 107                     // Invocation returned a future we know about -- return that future instead
 108                     if (future instanceof LazyDOMActionResultFuture) {
 109                         ListenableFuture<RpcResult<?>> bindingFuture =
 110                             ((LazyDOMActionResultFuture) future).getBindingFuture();
 111                         Futures.addCallback(bindingFuture, new FutureCallback<RpcResult<?>>() {
 112
 113                             @Override
 114                             public void onSuccess(final RpcResult<?> result) {
 115                                 if (result.isSuccessful()) {
 116                                     callback.onSuccess((Output) result.getResult());
 117                                 } else {
 118                                     //FIXME: It's not suitable to do this way here. It's better for
 119                                     // 'onFailure' to accept Collection<RpcError> as input.
 120                                     result.getErrors().forEach(e -> callback.onFailure(e.getCause()));
 121                                 }
 122                             }
 123
 124                             @Override
 125                             public void onFailure(final Throwable throwable) {
 126                                 callback.onFailure(throwable);
 127                             }
 128                         }, MoreExecutors.directExecutor());
 129                     } else {
 130                         Futures.addCallback(future, new FutureCallback<DOMActionResult>() {
 131
 132                             @Override
 133                             public void onSuccess(final DOMActionResult result) {
 134                                 if (result.getErrors().isEmpty()) {
 135                                     callback.onSuccess((Output) getCodec().fromNormalizedNodeOperationData(getPath(),
 136                                         result.getOutput().get()));
 137                                 } else {
 138                                     result.getErrors().forEach(e -> callback.onFailure(e.getCause()));
 139                                 }
 140                             }
 141
 142                             @Override
 143                             public void onFailure(final Throwable throwable) {
 144                                 callback.onFailure(throwable);
 145                             }
 146                         }, MoreExecutors.directExecutor());
 147                     }
 148                 }
 149                 return 0;
 150             default:
 151                 break;
 152         }
 153
 154         throw new UnsupportedOperationException("Method " + method.toString() + "is unsupported.");
 155     }
 156 }