/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2010 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.replication.protocol;
|
|
import java.io.UnsupportedEncodingException;
|
import java.util.zip.DataFormatException;
|
|
|
/**
|
* This message is used by LDAP server or by Replication Servers to
|
* update the send window of the remote entities.
|
*
|
* A receiving entity should create such a message with a given credit
|
* when it wants to open the send window of the remote entity.
|
* A LDAP or Replication Server should increase its send window when receiving
|
* such a message.
|
*/
|
public class InitializeRcvAckMsg extends RoutableMsg
|
{
|
private final int numAck;
|
|
|
/**
|
* Create a new message..
|
*
|
* @param sender The server ID of the server that send this message.
|
* @param destination The destination server or servers of this message.
|
* @param numAck The number of acknowledged messages.
|
* The window will be increase by this credit number.
|
*/
|
public InitializeRcvAckMsg(int sender, int destination, int numAck)
|
{
|
super(sender, destination);
|
this.numAck = numAck;
|
}
|
|
/**
|
* Creates a new message from its encoded form.
|
*
|
* @param in The byte array containing the encoded form of the message.
|
* @throws DataFormatException If the byte array does not contain a valid
|
* encoded form of the message.
|
*/
|
public InitializeRcvAckMsg(byte[] in) throws DataFormatException
|
{
|
super();
|
try
|
{
|
// msg type
|
if (in[0] != MSG_TYPE_INITIALIZE_RCV_ACK)
|
throw new DataFormatException("input is not a valid "
|
+ this.getClass().getCanonicalName());
|
int pos = 1;
|
|
// sender
|
int length = getNextLength(in, pos);
|
String senderString = new String(in, pos, length, "UTF-8");
|
senderID = Integer.valueOf(senderString);
|
pos += length +1;
|
|
// destination
|
length = getNextLength(in, pos);
|
String serverIdString = new String(in, pos, length, "UTF-8");
|
destination = Integer.valueOf(serverIdString);
|
pos += length +1;
|
|
// value fo the ack
|
length = getNextLength(in, pos);
|
String numAckStr = new String(in, pos, length, "UTF-8");
|
pos += length +1;
|
numAck = Integer.parseInt(numAckStr);
|
} catch (UnsupportedEncodingException e)
|
{
|
throw new DataFormatException("UTF-8 is not supported by this jvm.");
|
}
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public byte[] getBytes()
|
{
|
try {
|
byte[] byteSender = String.valueOf(senderID).getBytes("UTF-8");
|
byte[] byteDestination = String.valueOf(destination).getBytes("UTF-8");
|
byte[] byteNumAck = String.valueOf(numAck).getBytes("UTF-8");
|
|
int length = 1 + byteSender.length + 1
|
+ byteDestination.length + 1
|
+ byteNumAck.length + 1;
|
|
byte[] resultByteArray = new byte[length];
|
|
/* put the type of the operation */
|
resultByteArray[0] = MSG_TYPE_INITIALIZE_RCV_ACK;
|
int pos = 1;
|
|
// sender
|
pos = addByteArray(byteSender, resultByteArray, pos);
|
|
// destination
|
pos = addByteArray(byteDestination, resultByteArray, pos);
|
|
// ack value
|
pos = addByteArray(byteNumAck, resultByteArray, pos);
|
|
return resultByteArray;
|
}
|
catch (UnsupportedEncodingException e)
|
{
|
return null;
|
}
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
public String toString()
|
{
|
return this.getClass().getSimpleName() + "=["+
|
" sender=" + this.senderID +
|
" destination=" + this.destination +
|
" msgID=" + this.numAck + "]";
|
}
|
|
/**
|
* Get the number of message acknowledged by this message.
|
*
|
* @return the number of message acknowledged by this message.
|
*/
|
public int getNumAck()
|
{
|
return numAck;
|
}
|
}
|
