opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/BindingRpcImplementationAdapter.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.Function;
  11 import com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.JdkFutureAdapters;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  20 import org.opendaylight.yangtools.binding.data.codec.impl.BindingNormalizedNodeCodecRegistry;
  21 import org.opendaylight.yangtools.yang.binding.DataObject;
  22 import org.opendaylight.yangtools.yang.binding.RpcService;
  23 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  24 import org.opendaylight.yangtools.yang.binding.util.RpcServiceInvoker;
  25 import org.opendaylight.yangtools.yang.common.QName;
  26 import org.opendaylight.yangtools.yang.common.QNameModule;
  27 import org.opendaylight.yangtools.yang.common.RpcResult;
  28 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  30 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  31
  32 public class BindingRpcImplementationAdapter implements DOMRpcImplementation {
  33
  34     private static final Function<? super Exception, DOMRpcException> EXCEPTION_MAPPER = new Function<Exception, DOMRpcException>() {
  35
  36         @Override
  37         public DOMRpcException apply(final Exception input) {
  38             // FIXME: Return correct exception
  39             return null;
  40         }
  41
  42     };
  43     private final BindingNormalizedNodeCodecRegistry codec;
  44     private final RpcServiceInvoker invoker;
  45     private final RpcService delegate;
  46     private final QNameModule module;
  47
  48     private final Function<RpcResult<?>,DOMRpcResult> lazySerializedMapper = new Function<RpcResult<?>,DOMRpcResult>() {
  49
  50         @Override
  51         public DOMRpcResult apply(final RpcResult<?> input) {
  52             return LazySerializedDOMRpcResult.create(input, codec);
  53         }
  54     };
  55
  56     public <T extends RpcService> BindingRpcImplementationAdapter(final BindingNormalizedNodeCodecRegistry codec, final Class<T> type ,final T delegate) {
  57         this.codec = codec;
  58         this.delegate = delegate;
  59         invoker = RpcServiceInvoker.from(type);
  60         module = BindingReflections.getQNameModule(type);
  61     }
  62
  63     public QNameModule getQNameModule() {
  64         return module;
  65     }
  66
  67     @Override
  68     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final DOMRpcIdentifier rpc, @Nullable final NormalizedNode<?, ?> input) {
  69         final SchemaPath schemaPath = rpc.getType();
  70         final DataObject bindingInput = input != null ? deserilialize(rpc.getType(),input) : null;
  71         final ListenableFuture<RpcResult<?>> bindingResult = invoke(schemaPath, bindingInput);
  72         return transformResult(schemaPath,bindingResult);
  73     }
  74
  75     private DataObject deserilialize(final SchemaPath rpcPath, final NormalizedNode<?, ?> input) {
  76         if(input instanceof LazySerializedContainerNode) {
  77             return ((LazySerializedContainerNode) input).bindingData();
  78         }
  79         final SchemaPath inputSchemaPath = rpcPath.createChild(QName.create(module,"input"));
  80         return codec.fromNormalizedNodeRpcData(inputSchemaPath, (ContainerNode) input);
  81     }
  82
  83
  84     private ListenableFuture<RpcResult<?>> invoke(final SchemaPath schemaPath, final DataObject input) {
  85         return JdkFutureAdapters.listenInPoolThread(invoker.invokeRpc(delegate, schemaPath.getLastComponent(), input));
  86     }
  87
  88     private CheckedFuture<DOMRpcResult, DOMRpcException> transformResult(final SchemaPath schemaPath,
  89             final ListenableFuture<RpcResult<?>> bindingResult) {
  90         final ListenableFuture<DOMRpcResult> transformed = Futures.transform(bindingResult, lazySerializedMapper);
  91         return Futures.makeChecked(transformed, EXCEPTION_MAPPER);
  92     }
  93
  94 }