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 java.io.IOException;
12 import java.io.ObjectInput;
13 import java.io.ObjectOutput;
14 import java.util.Optional;
15 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
16 import org.slf4j.Logger;
17 import org.slf4j.LoggerFactory;
20 * Abstract base class for snapshots of the ShardDataTree.
22 * @author Robert Varga
25 public abstract class ShardDataTreeSnapshot {
26 private static final Logger LOG = LoggerFactory.getLogger(ShardDataTreeSnapshot.class);
28 ShardDataTreeSnapshot() {
29 // Hidden to prevent subclassing from outside of this package
32 public static ShardDataTreeSnapshot deserialize(final ObjectInput in) throws IOException {
33 final ShardDataTreeSnapshot ret = AbstractVersionedShardDataTreeSnapshot.versionedDeserialize(in);
35 // Make sure we consume all bytes, otherwise something went very wrong
36 final int bytesLeft = in.available();
38 throw new IOException("Deserialization left " + bytesLeft + " in the buffer");
46 * Get the root data node contained in this snapshot.
48 * @return An optional root node.
50 public abstract Optional<NormalizedNode<?, ?>> getRootNode();
52 public abstract void serialize(ObjectOutput out) throws IOException;