2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.mdsal.binding.dom.adapter;
10 import com.google.common.base.Preconditions;
11 import com.google.common.util.concurrent.AbstractFuture;
12 import com.google.common.util.concurrent.FluentFuture;
13 import com.google.common.util.concurrent.ListenableFuture;
14 import java.util.concurrent.ExecutionException;
15 import java.util.concurrent.Executor;
16 import java.util.concurrent.TimeUnit;
17 import java.util.concurrent.TimeoutException;
18 import org.opendaylight.mdsal.binding.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
19 import org.opendaylight.mdsal.dom.api.DOMRpcException;
20 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
21 import org.opendaylight.mdsal.dom.api.DefaultDOMRpcException;
22 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
23 import org.opendaylight.yangtools.util.concurrent.ExceptionMapper;
24 import org.opendaylight.yangtools.yang.binding.DataContainer;
25 import org.opendaylight.yangtools.yang.common.RpcResult;
26 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
28 final class LazyDOMRpcResultFuture extends AbstractFuture<DOMRpcResult> implements BindingRpcFutureAware {
29 private static final ExceptionMapper<DOMRpcException> DOM_RPC_EX_MAPPER =
30 new ExceptionMapper<DOMRpcException>("rpc", DOMRpcException.class) {
32 protected DOMRpcException newWithCause(final String message, final Throwable cause) {
33 return cause instanceof DOMRpcException ? (DOMRpcException)cause
34 : new DefaultDOMRpcException("RPC failed", cause);
38 private final ListenableFuture<RpcResult<?>> bindingFuture;
39 private final BindingNormalizedNodeCodecRegistry codec;
40 private volatile DOMRpcResult result;
42 private LazyDOMRpcResultFuture(final ListenableFuture<RpcResult<?>> delegate,
43 final BindingNormalizedNodeCodecRegistry codec) {
44 this.bindingFuture = Preconditions.checkNotNull(delegate, "delegate");
45 this.codec = Preconditions.checkNotNull(codec, "codec");
48 static FluentFuture<DOMRpcResult> create(final BindingNormalizedNodeCodecRegistry codec,
49 final ListenableFuture<RpcResult<?>> bindingResult) {
50 return new LazyDOMRpcResultFuture(bindingResult, codec);
54 public ListenableFuture<RpcResult<?>> getBindingFuture() {
59 public boolean cancel(final boolean mayInterruptIfRunning) {
60 return bindingFuture.cancel(mayInterruptIfRunning);
64 public void addListener(final Runnable listener, final Executor executor) {
65 bindingFuture.addListener(listener, executor);
69 public DOMRpcResult get() throws InterruptedException, ExecutionException {
75 return transformIfNecessary(bindingFuture.get());
76 } catch (ExecutionException e) {
77 throw new ExecutionException(e.getMessage(), DOM_RPC_EX_MAPPER.apply(e));
82 public DOMRpcResult get(final long timeout, final TimeUnit unit) throws InterruptedException, ExecutionException,
89 return transformIfNecessary(bindingFuture.get(timeout, unit));
90 } catch (ExecutionException e) {
91 throw new ExecutionException(e.getMessage(), DOM_RPC_EX_MAPPER.apply(e));
96 public boolean isCancelled() {
97 return bindingFuture.isCancelled();
101 public boolean isDone() {
102 return bindingFuture.isDone();
105 private synchronized DOMRpcResult transformIfNecessary(final RpcResult<?> input) {
106 if (result == null) {
107 result = transform(input);
112 private DOMRpcResult transform(final RpcResult<?> input) {
113 if (input.isSuccessful()) {
114 final Object inputData = input.getResult();
115 if (inputData instanceof DataContainer) {
116 return new DefaultDOMRpcResult(codec.toNormalizedNodeRpcData((DataContainer) inputData));
119 return new DefaultDOMRpcResult((NormalizedNode<?, ?>) null);
121 return new DefaultDOMRpcResult(input.getErrors());