/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.replication.protocol;
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import java.io.Serializable;
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import java.io.UnsupportedEncodingException;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.util.zip.DataFormatException;
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import org.opends.server.replication.common.ServerState;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.DN;
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/**
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* This message is used by LDAP server when they first connect.
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* to a changelog server to let them know who they are and what is their state
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* (their RUV)
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*/
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public class ServerStartMessage extends SynchronizationMessage implements
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Serializable
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{
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private static final long serialVersionUID = 8649393307038290287L;
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private short serverId; // Id of the LDAP server that sent this message
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private String serverURL;
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private String baseDn;
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private int maxReceiveQueue;
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private int maxSendQueue;
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private int maxReceiveDelay;
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private int maxSendDelay;
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private int windowSize;
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private ServerState serverState = null;
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/**
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* The time in milliseconds between heartbeats from the synchronization
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* server. Zero means heartbeats are off.
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*/
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private long heartbeatInterval = 0;
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/**
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* Create a new ServerStartMessage.
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*
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* @param serverId The serverId of the server for which the ServerStartMessage
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* is created.
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* @param baseDn The base DN.
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* @param maxReceiveDelay The max receive delay for this server.
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* @param maxReceiveQueue The max receive Queue for this server.
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* @param maxSendDelay The max Send Delay from this server.
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* @param maxSendQueue The max send Queue from this server.
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* @param windowSize The window size used by this server.
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* @param heartbeatInterval The requested heartbeat interval.
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* @param serverState The state of this server.
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*/
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public ServerStartMessage(short serverId, DN baseDn, int maxReceiveDelay,
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int maxReceiveQueue, int maxSendDelay,
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int maxSendQueue, int windowSize,
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long heartbeatInterval,
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ServerState serverState)
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{
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this.serverId = serverId;
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this.baseDn = baseDn.toString();
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this.maxReceiveDelay = maxReceiveDelay;
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this.maxReceiveQueue = maxReceiveQueue;
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this.maxSendDelay = maxSendDelay;
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this.maxSendQueue = maxSendQueue;
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this.windowSize = windowSize;
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this.heartbeatInterval = heartbeatInterval;
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this.serverState = serverState;
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try
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{
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/* TODO : find a better way to get the server URL */
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this.serverURL = InetAddress.getLocalHost().getHostName();
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} catch (UnknownHostException e)
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{
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this.serverURL = "Unknown host";
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}
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}
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/**
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* Creates a new ServerStartMessage from its encoded form.
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*
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* @param in The byte array containing the encoded form of the
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* ServerStartMessage.
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* @throws DataFormatException If the byte array does not contain a valid
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* encoded form of the ServerStartMessage.
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*/
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public ServerStartMessage(byte[] in) throws DataFormatException
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{
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/* The ServerStartMessage is encoded in the form :
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* <operation type><baseDn><ServerId><ServerUrl><maxRecvDelay><maxRecvQueue>
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* <maxSendDelay><maxSendQueue><window><heartbeatInterval><ServerState>
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*/
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try
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{
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/* first byte is the type */
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if (in[0] != MSG_TYPE_SERVER_START)
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throw new DataFormatException("input is not a valid ServerStart msg");
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int pos = 1;
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/*
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* read the dn
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* first calculate the length then construct the string
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*/
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int length = getNextLength(in, pos);
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baseDn = new String(in, pos, length, "UTF-8");
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pos += length +1;
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/*
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* read the ServerId
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*/
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length = getNextLength(in, pos);
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String serverIdString = new String(in, pos, length, "UTF-8");
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serverId = Short.valueOf(serverIdString);
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pos += length +1;
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/*
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* read the ServerURL
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*/
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length = getNextLength(in, pos);
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serverURL = new String(in, pos, length, "UTF-8");
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pos += length +1;
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/*
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* read the maxReceiveDelay
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*/
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length = getNextLength(in, pos);
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maxReceiveDelay = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the maxReceiveQueue
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*/
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length = getNextLength(in, pos);
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maxReceiveQueue = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the maxSendDelay
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*/
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length = getNextLength(in, pos);
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maxSendDelay = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the maxSendQueue
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*/
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length = getNextLength(in, pos);
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maxSendQueue = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the windowSize
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*/
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length = getNextLength(in, pos);
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windowSize = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the heartbeatInterval
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*/
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length = getNextLength(in, pos);
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heartbeatInterval = Integer.valueOf(new String(in, pos, length, "UTF-8"));
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pos += length +1;
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/*
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* read the ServerState
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*/
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serverState = new ServerState(in, pos, in.length-1);
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} catch (UnsupportedEncodingException e)
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{
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throw new DataFormatException("UTF-8 is not supported by this jvm.");
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}
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}
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/**
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* Get the ServerID from the message.
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* @return the server ID
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*/
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public short getServerId()
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{
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return serverId;
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}
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/**
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* get the Server URL from the message.
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* @return the server URL
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*/
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public String getServerURL()
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{
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return serverURL;
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}
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/**
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* Get the baseDn.
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* @return Returns the baseDn.
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*/
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public DN getBaseDn()
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{
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try
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{
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return DN.decode(baseDn);
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} catch (DirectoryException e)
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{
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return null;
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}
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}
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/**
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* Get the maxReceiveDelay.
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* @return Returns the maxReceiveDelay.
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*/
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public int getMaxReceiveDelay()
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{
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return maxReceiveDelay;
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}
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/**
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* Get the maxReceiveQueue.
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* @return Returns the maxReceiveQueue.
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*/
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public int getMaxReceiveQueue()
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{
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return maxReceiveQueue;
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}
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/**
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* Get the maxSendDelay.
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* @return Returns the maxSendDelay.
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*/
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public int getMaxSendDelay()
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{
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return maxSendDelay;
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}
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/**
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* Get the maxSendQueue.
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* @return Returns the maxSendQueue.
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*/
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public int getMaxSendQueue()
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{
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return maxSendQueue;
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}
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/**
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* Get the ServerState.
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* @return The ServerState.
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*/
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public ServerState getServerState()
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{
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return serverState;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public byte[] getBytes()
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{
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/*
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* ServerStartMessage contains.
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* <baseDn><ServerId><ServerUrl><maxRecvDelay><maxRecvQueue>
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* <maxSendDelay><maxSendQueue><windowsize><heartbeatInterval><ServerState>
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*/
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try {
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byte[] byteDn = baseDn.getBytes("UTF-8");
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byte[] byteServerId = String.valueOf(serverId).getBytes("UTF-8");
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byte[] byteServerUrl = serverURL.getBytes("UTF-8");
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byte[] byteMaxRecvDelay =
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String.valueOf(maxReceiveDelay).getBytes("UTF-8");
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byte[] byteMaxRecvQueue =
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String.valueOf(maxReceiveQueue).getBytes("UTF-8");
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byte[] byteMaxSendDelay =
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String.valueOf(maxSendDelay).getBytes("UTF-8");
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byte[] byteMaxSendQueue =
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String.valueOf(maxSendQueue).getBytes("UTF-8");
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byte[] byteWindowSize =
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String.valueOf(windowSize).getBytes("UTF-8");
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byte[] byteHeartbeatInterval =
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String.valueOf(heartbeatInterval).getBytes("UTF-8");
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byte[] byteServerState = serverState.getBytes();
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int length = 1 + byteDn.length + 1 + byteServerId.length + 1 +
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byteServerUrl.length + 1 +
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byteMaxRecvDelay.length + 1 +
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byteMaxRecvQueue.length + 1 +
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byteMaxSendDelay.length + 1 +
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byteMaxSendQueue.length + 1 +
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byteWindowSize.length + 1 +
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byteHeartbeatInterval.length + 1 +
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byteServerState.length + 1;
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byte[] resultByteArray = new byte[length];
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/* put the type of the operation */
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resultByteArray[0] = MSG_TYPE_SERVER_START;
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int pos = 1;
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pos = addByteArray(byteDn, resultByteArray, pos);
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pos = addByteArray(byteServerId, resultByteArray, pos);
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pos = addByteArray(byteServerUrl, resultByteArray, pos);
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pos = addByteArray(byteMaxRecvDelay, resultByteArray, pos);
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pos = addByteArray(byteMaxRecvQueue, resultByteArray, pos);
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pos = addByteArray(byteMaxSendDelay, resultByteArray, pos);
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pos = addByteArray(byteMaxSendQueue, resultByteArray, pos);
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pos = addByteArray(byteWindowSize, resultByteArray, pos);
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pos = addByteArray(byteHeartbeatInterval, resultByteArray, pos);
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pos = addByteArray(byteServerState, resultByteArray, pos);
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return resultByteArray;
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}
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catch (UnsupportedEncodingException e)
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{
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return null;
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}
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}
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/**
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* Get the window size for the ldap server that created the message.
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*
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* @return The window size for the ldap server that created the message.
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*/
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public int getWindowSize()
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{
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return windowSize;
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}
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/**
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* Get the heartbeat interval requested by the ldap server that created the
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* message.
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*
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* @return The heartbeat interval requested by the ldap server that created
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* the message.
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*/
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public long getHeartbeatInterval()
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{
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return heartbeatInterval;
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}
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}
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