2 * Copyright (c) 2016 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.controller.cluster.datastore.persisted;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Verify;
13 import com.google.common.collect.ImmutableMap;
14 import com.google.common.collect.ImmutableMap.Builder;
15 import java.io.Externalizable;
16 import java.io.IOException;
17 import java.io.ObjectInput;
18 import java.io.ObjectOutput;
19 import java.io.Serializable;
21 import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
25 * An {@link AbstractVersionedShardDataTreeSnapshot} which contains additional metadata.
27 * @author Robert Varga
30 public final class MetadataShardDataTreeSnapshot extends AbstractVersionedShardDataTreeSnapshot implements Serializable {
31 private static final class Proxy implements Externalizable {
32 private static final long serialVersionUID = 1L;
34 private Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata;
35 private NormalizedNode<?, ?> rootNode;
41 Proxy(final MetadataShardDataTreeSnapshot snapshot) {
42 this.rootNode = snapshot.getRootNode().get();
43 this.metadata = snapshot.getMetadata();
47 public void writeExternal(final ObjectOutput out) throws IOException {
48 out.writeInt(metadata.size());
49 for (ShardDataTreeSnapshotMetadata m : metadata.values()) {
53 SerializationUtils.serializeNormalizedNode(rootNode, out);
57 public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
58 final int metaSize = in.readInt();
59 Preconditions.checkArgument(metaSize >= 0, "Invalid negative metadata map length %s", metaSize);
61 // Default pre-allocate is 4, which should be fine
62 final Builder<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metaBuilder =
63 ImmutableMap.builder();
64 for (int i = 0; i < metaSize; ++i) {
65 final ShardDataTreeSnapshotMetadata m = (ShardDataTreeSnapshotMetadata) in.readObject();
66 metaBuilder.put(m.getClass(), m);
69 metadata = metaBuilder.build();
70 rootNode = Verify.verifyNotNull(SerializationUtils.deserializeNormalizedNode(in));
73 private Object readResolve() {
74 return new MetadataShardDataTreeSnapshot(rootNode, metadata);
78 private static final long serialVersionUID = 1L;
80 private final Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata;
81 private final NormalizedNode<?, ?> rootNode;
83 public MetadataShardDataTreeSnapshot(final NormalizedNode<?, ?> rootNode) {
84 this(rootNode, ImmutableMap.of());
87 public MetadataShardDataTreeSnapshot(final NormalizedNode<?, ?> rootNode,
88 final Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> metadata) {
89 this.rootNode = Preconditions.checkNotNull(rootNode);
90 this.metadata = ImmutableMap.copyOf(metadata);
93 public Map<Class<? extends ShardDataTreeSnapshotMetadata>, ShardDataTreeSnapshotMetadata> getMetadata() {
98 NormalizedNode<?, ?> rootNode() {
103 PayloadVersion version() {
104 return PayloadVersion.BORON;
107 private Object writeReplace() {
108 return new Proxy(this);