/*
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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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* Copyright 2010 Sun Microsystems, Inc.
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* Portions copyright 2013 ForgeRock AS.
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*/
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package org.opends.server.replication.protocol;
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import java.io.UnsupportedEncodingException;
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import java.util.zip.DataFormatException;
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/**
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* This message is used by LDAP server or by Replication Servers to
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* update the send window of the remote entities.
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*
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* A receiving entity should create such a message with a given credit
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* when it wants to open the send window of the remote entity.
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* A LDAP or Replication Server should increase its send window when receiving
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* such a message.
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*/
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public class InitializeRcvAckMsg extends RoutableMsg
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{
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private final int numAck;
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/**
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* Create a new message..
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*
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* @param sender The server ID of the server that send this message.
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* @param destination The destination server or servers of this message.
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* @param numAck The number of acknowledged messages.
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* The window will be increase by this credit number.
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*/
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public InitializeRcvAckMsg(int sender, int destination, int numAck)
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{
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super(sender, destination);
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this.numAck = numAck;
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}
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/**
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* Creates a new message from its encoded form.
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*
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* @param in The byte array containing the encoded form of the message.
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* @throws DataFormatException If the byte array does not contain a valid
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* encoded form of the message.
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*/
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public InitializeRcvAckMsg(byte[] in) throws DataFormatException
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{
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super();
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try
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{
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// msg type
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if (in[0] != MSG_TYPE_INITIALIZE_RCV_ACK)
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throw new DataFormatException("input is not a valid "
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+ this.getClass().getCanonicalName());
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int pos = 1;
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// sender
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int length = getNextLength(in, pos);
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String senderString = new String(in, pos, length, "UTF-8");
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senderID = Integer.valueOf(senderString);
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pos += length +1;
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// destination
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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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destination = Integer.valueOf(serverIdString);
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pos += length +1;
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// value fo the ack
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length = getNextLength(in, pos);
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String numAckStr = new String(in, pos, length, "UTF-8");
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pos += length +1;
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numAck = Integer.parseInt(numAckStr);
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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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* {@inheritDoc}
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*/
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@Override
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public byte[] getBytes(short protocolVersion)
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{
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try {
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byte[] byteSender = String.valueOf(senderID).getBytes("UTF-8");
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byte[] byteDestination = String.valueOf(destination).getBytes("UTF-8");
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byte[] byteNumAck = String.valueOf(numAck).getBytes("UTF-8");
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int length = 1 + byteSender.length + 1
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+ byteDestination.length + 1
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+ byteNumAck.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_INITIALIZE_RCV_ACK;
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int pos = 1;
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// sender
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pos = addByteArray(byteSender, resultByteArray, pos);
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// destination
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pos = addByteArray(byteDestination, resultByteArray, pos);
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// ack value
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pos = addByteArray(byteNumAck, 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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* {@inheritDoc}
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*/
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public String toString()
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{
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return this.getClass().getSimpleName() + "=["+
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" sender=" + this.senderID +
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" destination=" + this.destination +
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" msgID=" + this.numAck + "]";
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}
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/**
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* Get the number of message acknowledged by this message.
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*
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* @return the number of message acknowledged by this message.
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*/
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public int getNumAck()
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{
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return numAck;
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}
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}
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