binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/ActionAdapter.java

   1 /*
   2  * Copyright (c) 2018 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.dom.adapter;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static java.util.Objects.requireNonNull;
  12 import static org.opendaylight.mdsal.binding.dom.adapter.StaticConfiguration.ENABLE_CODEC_SHORTCUT;
  13 import static org.opendaylight.yangtools.yang.common.YangConstants.operationInputQName;
  14
  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 org.eclipse.jdt.annotation.NonNull;
  21 import org.opendaylight.mdsal.binding.api.ActionSpec;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.mdsal.dom.api.DOMActionResult;
  24 import org.opendaylight.mdsal.dom.api.DOMActionService;
  25 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.binding.RpcInput;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
  30
  31 final class ActionAdapter extends AbstractBindingAdapter<DOMActionService> implements InvocationHandler {
  32     private final @NonNull ActionSpec<?, ?> spec;
  33     private final @NonNull NodeIdentifier inputName;
  34     private final @NonNull Absolute actionPath;
  35
  36     ActionAdapter(final AdapterContext codec, final DOMActionService delegate, final ActionSpec<?, ?> spec) {
  37         super(codec, delegate);
  38         this.spec = requireNonNull(spec);
  39         actionPath = currentSerializer().getActionPath(spec);
  40         inputName = NodeIdentifier.create(operationInputQName(actionPath.lastNodeIdentifier().getModule()));
  41     }
  42
  43     @Override
  44     public Object invoke(final Object proxy, final Method method, final Object [] args) throws Throwable {
  45         switch (method.getName()) {
  46             case "equals":
  47                 if (args.length == 1) {
  48                     return proxy == args[0];
  49                 }
  50                 break;
  51             case "hashCode":
  52                 if (args.length == 0) {
  53                     return System.identityHashCode(proxy);
  54                 }
  55                 break;
  56             case "toString":
  57                 if (args.length == 0) {
  58                     return spec.type().getName() + "$Adapter{delegate=" + getDelegate() + "}";
  59                 }
  60                 break;
  61             case "invoke":
  62                 if (args.length == 2) {
  63                     final InstanceIdentifier<?> path = (InstanceIdentifier<?>) requireNonNull(args[0]);
  64                     checkArgument(!path.isWildcarded(), "Cannot invoke action on wildcard path %s", path);
  65
  66                     final RpcInput input = (RpcInput) requireNonNull(args[1]);
  67                     final CurrentAdapterSerializer serializer = currentSerializer();
  68                     final ListenableFuture<? extends DOMActionResult> future = getDelegate().invokeAction(actionPath,
  69                         new DOMDataTreeIdentifier(LogicalDatastoreType.OPERATIONAL,
  70                             serializer.toYangInstanceIdentifier(path)),
  71                         serializer.toLazyNormalizedNodeActionInput(spec.type(), inputName, input));
  72
  73                     // Invocation returned a future we know about -- return that future instead
  74                     if (ENABLE_CODEC_SHORTCUT && future instanceof BindingRpcFutureAware bindingAware) {
  75                         return bindingAware.getBindingFuture();
  76                     }
  77
  78                     return Futures.transform(future,
  79                         dom -> RpcResultUtil.rpcResultFromDOM(dom.getErrors(), dom.getOutput()
  80                             .map(output -> serializer.fromNormalizedNodeActionOutput(spec.type(), output))
  81                             .orElse(null)),
  82                         MoreExecutors.directExecutor());
  83                 }
  84                 break;
  85             default:
  86                 break;
  87         }
  88
  89         if (method.isDefault()) {
  90             return InvocationHandler.invokeDefault(proxy, method, args);
  91         }
  92         throw new NoSuchMethodError("Method " + method.toString() + "is unsupported.");
  93     }
  94 }