2 * Copyright (c) 2020 PANTHEON.tech, s.r.o. 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.messages;
11 * An instance of a {@link Payload} class is meant to be used as the Payload for {@link AppendEntries}.
14 * When an actor which is derived from RaftActor attempts to persistData it must pass an instance of the Payload class.
15 * Similarly when state needs to be applied to the derived RaftActor it will be passed an instance of the Payload class.
17 public abstract class Payload {
19 * Return the estimate of in-memory size of this payload.
21 * @return An estimate of the in-memory size of this payload.
23 public abstract int size();