binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/ActionServiceAdapter.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 com.google.common.base.Preconditions.checkState;
  12 import static java.util.Objects.requireNonNull;
  13
  14 import com.google.common.annotations.Beta;
  15 import com.google.common.collect.ClassToInstanceMap;
  16 import com.google.common.collect.ImmutableSet;
  17 import com.google.common.util.concurrent.FluentFuture;
  18 import java.lang.reflect.Proxy;
  19 import java.util.Set;
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.opendaylight.mdsal.binding.api.ActionService;
  23 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  24 import org.opendaylight.mdsal.binding.dom.adapter.BindingDOMAdapterBuilder.Factory;
  25 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
  26 import org.opendaylight.mdsal.dom.api.DOMActionService;
  27 import org.opendaylight.mdsal.dom.api.DOMService;
  28 import org.opendaylight.yangtools.concepts.Delegator;
  29 import org.opendaylight.yangtools.yang.binding.Action;
  30 import org.opendaylight.yangtools.yang.binding.DataObject;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.opendaylight.yangtools.yang.binding.RpcInput;
  33 import org.opendaylight.yangtools.yang.binding.RpcOutput;
  34 import org.opendaylight.yangtools.yang.common.RpcResult;
  35
  36 @Beta
  37 @NonNullByDefault
  38 final class ActionServiceAdapter
  39         extends AbstractBindingLoadingAdapter<DOMActionService, Class<? extends Action<?, ?, ?>>, ActionAdapter>
  40         implements ActionService {
  41     private static final class Builder extends BindingDOMAdapterBuilder<ActionService> {
  42         @Override
  43         protected ActionService createInstance(final @Nullable BindingToNormalizedNodeCodec codec,
  44                 final ClassToInstanceMap<DOMService> delegates) {
  45             final DOMActionService domAction = delegates.getInstance(DOMActionService.class);
  46             return new ActionServiceAdapter(requireNonNull(codec), domAction);
  47         }
  48
  49         @Override
  50         public Set<? extends Class<? extends DOMService>> getRequiredDelegates() {
  51             return ImmutableSet.of(DOMActionService.class);
  52         }
  53     }
  54
  55     private static final class ConstrainedAction implements Delegator<Action<?, ?, ?>>,
  56             Action<InstanceIdentifier<?>, RpcInput, RpcOutput> {
  57         private final Action<InstanceIdentifier<?>, RpcInput, RpcOutput> delegate;
  58         private final Set<? extends DataTreeIdentifier<?>> nodes;
  59
  60         ConstrainedAction(final Action<?, ?, ?> delegate, final Set<? extends DataTreeIdentifier<?>> nodes) {
  61             this.delegate = requireNonNull((Action) delegate);
  62             this.nodes = requireNonNull(nodes);
  63         }
  64
  65         @Override
  66         public FluentFuture<RpcResult<RpcOutput>> invoke(final InstanceIdentifier<?> path, final RpcInput input) {
  67             checkState(nodes.contains(path), "Cannot service %s", path);
  68             return delegate.invoke(path, input);
  69         }
  70
  71         @Override
  72         public Action<?, ?, ?> getDelegate() {
  73             return delegate;
  74         }
  75     }
  76
  77     static final Factory<ActionService> BUILDER_FACTORY = Builder::new;
  78
  79     ActionServiceAdapter(final BindingToNormalizedNodeCodec codec, final DOMActionService delegate) {
  80         super(codec, delegate);
  81     }
  82
  83     @Override
  84     public <O extends DataObject, T extends Action<?, ?, ?>> T getActionHandle(final Class<T> actionInterface,
  85             final Set<DataTreeIdentifier<O>> nodes) {
  86         return !nodes.isEmpty() ? (T) new ConstrainedAction(getActionHandle(actionInterface, ImmutableSet.of()), nodes)
  87                 : (T) Proxy.newProxyInstance(actionInterface.getClassLoader(), new Class[] { actionInterface },
  88                     getAdapter(actionInterface));
  89     }
  90
  91     @Override
  92     ActionAdapter loadAdapter(final Class<? extends Action<?, ?, ?>> key) {
  93         checkArgument(BindingReflections.isBindingClass(key));
  94         checkArgument(key.isInterface(), "Supplied Action type must be an interface.");
  95         return new ActionAdapter(getCodec(), getDelegate(), key);
  96     }
  97 }