Bump version to 4.0.6-SNAPSHOT
[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / messages / ReadData.java
1 /*
2  * Copyright (c) 2014 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.cluster.datastore.messages;
9
10 import com.google.common.base.Preconditions;
11 import com.google.common.util.concurrent.FluentFuture;
12 import com.google.common.util.concurrent.SettableFuture;
13 import java.util.Optional;
14 import org.opendaylight.mdsal.common.api.ReadFailedException;
15 import org.opendaylight.mdsal.dom.spi.store.DOMStoreReadTransaction;
16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
18
19 public class ReadData extends AbstractRead<Optional<NormalizedNode>> {
20     private static final long serialVersionUID = 1L;
21
22     public ReadData() {
23     }
24
25     public ReadData(final YangInstanceIdentifier path, final short version) {
26         super(path, version);
27     }
28
29     @Override
30     public FluentFuture<Optional<NormalizedNode>> apply(final DOMStoreReadTransaction readDelegate) {
31         return readDelegate.read(getPath());
32     }
33
34     @Override
35     public void processResponse(final Object readResponse,
36             final SettableFuture<Optional<NormalizedNode>> returnFuture) {
37         if (ReadDataReply.isSerializedType(readResponse)) {
38             ReadDataReply reply = ReadDataReply.fromSerializable(readResponse);
39             returnFuture.set(Optional.ofNullable(reply.getNormalizedNode()));
40         } else {
41             returnFuture.setException(new ReadFailedException("Invalid response reading data for path " + getPath()));
42         }
43     }
44
45     @Override
46     protected AbstractRead<Optional<NormalizedNode>> newInstance(final short withVersion) {
47         return new ReadData(getPath(), withVersion);
48     }
49
50     public static ReadData fromSerializable(final Object serializable) {
51         Preconditions.checkArgument(serializable instanceof ReadData);
52         return (ReadData)serializable;
53     }
54
55     public static boolean isSerializedType(final Object message) {
56         return message instanceof ReadData;
57     }
58 }