2 * Copyright (c) 2015 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 com.google.common.collect.ImmutableList;
11 import java.io.ByteArrayOutputStream;
12 import java.io.Externalizable;
13 import java.io.IOException;
14 import java.io.ObjectInput;
15 import java.io.ObjectOutput;
16 import java.io.ObjectOutputStream;
17 import java.util.ArrayList;
18 import java.util.List;
19 import javax.annotation.Nonnull;
20 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
21 import org.opendaylight.controller.cluster.raft.protobuff.client.messages.PersistentPayload;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * Payload data for server configuration log entries.
28 * @author Thomas Pantelis
30 public final class ServerConfigurationPayload extends Payload implements PersistentPayload, MigratedSerializable {
31 private static final class Proxy implements Externalizable {
32 private static final long serialVersionUID = 1L;
34 private List<ServerInfo> serverConfig;
36 // checkstyle flags the public modifier as redundant which really doesn't make sense since it clearly isn't
37 // redundant. It is explicitly needed for Java serialization to be able to create instances via reflection.
38 @SuppressWarnings("checkstyle:RedundantModifier")
43 Proxy(final ServerConfigurationPayload payload) {
44 this.serverConfig = payload.getServerConfig();
48 public void writeExternal(final ObjectOutput out) throws IOException {
49 out.writeInt(serverConfig.size());
50 for (ServerInfo i : serverConfig) {
51 out.writeObject(i.getId());
52 out.writeBoolean(i.isVoting());
57 public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
58 final int size = in.readInt();
59 serverConfig = new ArrayList<>(size);
60 for (int i = 0; i < size; ++i) {
61 final String id = (String) in.readObject();
62 final boolean voting = in.readBoolean();
63 serverConfig.add(new ServerInfo(id, voting));
67 private Object readResolve() {
68 return new ServerConfigurationPayload(serverConfig);
72 private static final Logger LOG = LoggerFactory.getLogger(ServerConfigurationPayload.class);
73 private static final long serialVersionUID = 1L;
75 private final List<ServerInfo> serverConfig;
76 private final boolean migrated;
77 private int serializedSize = -1;
79 private ServerConfigurationPayload(final @Nonnull List<ServerInfo> serverConfig, boolean migrated) {
80 this.serverConfig = ImmutableList.copyOf(serverConfig);
81 this.migrated = migrated;
84 public ServerConfigurationPayload(final @Nonnull List<ServerInfo> serverConfig) {
85 this(serverConfig, false);
89 public static ServerConfigurationPayload createMigrated(final @Nonnull List<ServerInfo> serverConfig) {
90 return new ServerConfigurationPayload(serverConfig, true);
95 public boolean isMigrated() {
99 public @Nonnull List<ServerInfo> getServerConfig() {
105 if (serializedSize < 0) {
106 try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
107 try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
108 out.writeObject(writeReplace());
111 serializedSize = bos.toByteArray().length;
112 } catch (IOException e) {
114 LOG.error("Error serializing", e);
118 return serializedSize;
122 public String toString() {
123 return "ServerConfigurationPayload [serverConfig=" + serverConfig + "]";
127 public Object writeReplace() {
128 return new Proxy(this);