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 static java.util.Objects.requireNonNull;
  11 import static org.opendaylight.mdsal.binding.dom.adapter.StaticConfiguration.ENABLE_CODEC_SHORTCUT;
  12
  13 import com.google.common.cache.Cache;
  14 import com.google.common.cache.CacheBuilder;
  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 org.opendaylight.mdsal.binding.dom.adapter.invoke.RpcServiceInvoker;
  22 import org.opendaylight.mdsal.binding.dom.codec.api.BindingLazyContainerNode;
  23 import org.opendaylight.mdsal.binding.spec.reflect.BindingReflections;
  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.common.QName;
  30 import org.opendaylight.yangtools.yang.common.RpcResult;
  31 import org.opendaylight.yangtools.yang.common.YangConstants;
  32 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  33 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  34
  35 final class BindingDOMRpcImplementationAdapter implements DOMRpcImplementation {
  36     private static final Cache<Class<?>, RpcServiceInvoker> SERVICE_INVOKERS = CacheBuilder.newBuilder().weakKeys()
  37             .build();
  38
  39     // Default implementations are 0, we need to perform some translation, hence we have a slightly higher cost
  40     private static final int COST = 1;
  41
  42     private final AdapterContext adapterContext;
  43     private final RpcServiceInvoker invoker;
  44     private final RpcService delegate;
  45     private final QName inputQname;
  46
  47     <T extends RpcService> BindingDOMRpcImplementationAdapter(final AdapterContext adapterContext,
  48             final Class<T> type, final Map<SchemaPath, Method> localNameToMethod, final T delegate) {
  49         try {
  50             this.invoker = SERVICE_INVOKERS.get(type, () -> {
  51                 final Map<QName, Method> map = new HashMap<>();
  52                 for (Entry<SchemaPath, Method> e : localNameToMethod.entrySet()) {
  53                     map.put(e.getKey().getLastComponent(), e.getValue());
  54                 }
  55
  56                 return RpcServiceInvoker.from(map);
  57             });
  58         } catch (ExecutionException e) {
  59             throw new IllegalArgumentException("Failed to create invokers for type " + type, e);
  60         }
  61
  62         this.adapterContext = requireNonNull(adapterContext);
  63         this.delegate = requireNonNull(delegate);
  64         inputQname = YangConstants.operationInputQName(BindingReflections.getQNameModule(type)).intern();
  65     }
  66
  67     @Override
  68     public ListenableFuture<DOMRpcResult> invokeRpc(final DOMRpcIdentifier rpc, final ContainerNode input) {
  69         final SchemaPath schemaPath = rpc.getType();
  70         final CurrentAdapterSerializer serializer = adapterContext.currentSerializer();
  71         final DataObject bindingInput = input != null ? deserialize(serializer, schemaPath, input) : null;
  72         final ListenableFuture<RpcResult<?>> bindingResult = invoke(schemaPath, bindingInput);
  73         return LazyDOMRpcResultFuture.create(serializer, bindingResult);
  74     }
  75
  76     @Override
  77     public long invocationCost() {
  78         return COST;
  79     }
  80
  81     private DataObject deserialize(final CurrentAdapterSerializer serializer, final SchemaPath rpcPath,
  82             final ContainerNode input) {
  83         if (ENABLE_CODEC_SHORTCUT && input instanceof BindingLazyContainerNode) {
  84             return ((BindingLazyContainerNode<?>) input).getDataObject();
  85         }
  86         final SchemaPath inputSchemaPath = rpcPath.createChild(inputQname);
  87         return serializer.fromNormalizedNodeRpcData(inputSchemaPath, input);
  88     }
  89
  90     private ListenableFuture<RpcResult<?>> invoke(final SchemaPath schemaPath, final DataObject input) {
  91         return invoker.invokeRpc(delegate, schemaPath.getLastComponent(), input);
  92     }
  93 }