2 * Copyright (c) 2016 Brocade Communications 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.raft.persisted;
10 import akka.dispatch.ControlMessage;
11 import java.io.Serializable;
12 import org.apache.commons.lang3.SerializationUtils;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.opendaylight.controller.cluster.raft.messages.Payload;
17 * Payload used for no-op log entries that are put into the journal by the PreLeader in order to commit
18 * entries from the prior term.
20 * @author Thomas Pantelis
22 // FIXME: do not implement MigratedSerializable once Proxy is gone
23 public final class NoopPayload extends Payload implements ControlMessage, MigratedSerializable {
24 // There is no need for Externalizable
25 @Deprecated(since = "7.0.0", forRemoval = true)
26 private static final class Proxy implements Serializable {
28 private static final long serialVersionUID = 1L;
29 private static final @NonNull NoopPayload INSTANCE = new NoopPayload(true);
32 private Object readResolve() {
38 private static final long serialVersionUID = 1L;
39 private static final @NonNull NP PROXY = new NP();
40 // Estimate to how big the proxy is. Note this includes object stream overhead, so it is a bit conservative
41 private static final int PROXY_SIZE = SerializationUtils.serialize(PROXY).length;
43 public static final @NonNull NoopPayload INSTANCE = new NoopPayload(false);
45 private final boolean migrated;
47 private NoopPayload(final boolean migrated) {
48 this.migrated = migrated;
57 public int serializedSize() {
62 public boolean isMigrated() {
66 // FIXME: protected once not MigratedSerializable
68 public Object writeReplace() {