/*
|
* 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 2006-2010 Sun Microsystems, Inc.
|
*/
|
package org.opends.server.replication.protocol;
|
|
|
/**
|
* The version utility class for the replication protocol.
|
*/
|
public class ProtocolVersion
|
{
|
/**
|
* The constant for the first historical version of the replication protocol.
|
*/
|
public static final short REPLICATION_PROTOCOL_V1 = 1;
|
/**
|
* The constant for the real value of the first historical version of the
|
* replication protocol (was used in start messages only).
|
*/
|
public static final short REPLICATION_PROTOCOL_V1_REAL = 49;
|
/**
|
* The constant for the second version of the replication protocol.
|
* Add fields in the header for assured replication.
|
*/
|
public static final short REPLICATION_PROTOCOL_V2 = 2;
|
|
/**
|
* The constant for the 3rd version of the replication protocol.
|
* Add messages for remote ECL : not used as of today.
|
*/
|
public static final short REPLICATION_PROTOCOL_V3 = 3;
|
|
/**
|
* The constant for the 4th version of the replication protocol.
|
* - Add to the body of the ADD/MOD/MODDN/DEL msgs, a list of attribute for
|
* ECL entry attributes.
|
* - Modified algorithm for choosing a RS to connect to: introduction of a
|
* ReplicationServerDSMsg message.
|
* -> also added of the server URL in RSInfo of TopologyMsg
|
* - Introduction of a StopMsg for proper connections ending.
|
* - Initialization failover/flow control
|
*/
|
public static final short REPLICATION_PROTOCOL_V4 = 4;
|
|
/**
|
* The replication protocol version used by the instance of RS/DS in this VM.
|
*/
|
private static short currentVersion = -1;
|
|
static
|
{
|
resetCurrentVersion();
|
}
|
|
/**
|
* Gets the current version of the replication protocol.
|
*
|
* @return The current version of the protocol.
|
*/
|
public static short getCurrentVersion()
|
{
|
return currentVersion;
|
}
|
|
/**
|
* For test purpose.
|
* @param curVersion The provided current version.
|
*/
|
public static void setCurrentVersion(short curVersion)
|
{
|
currentVersion = curVersion;
|
}
|
|
/**
|
* Resets the protocol version to the default value (the latest version).
|
* For test purpose.
|
*/
|
public static void resetCurrentVersion()
|
{
|
currentVersion = REPLICATION_PROTOCOL_V4;
|
}
|
|
/**
|
* Specifies the oldest version of the protocol from the provided one
|
* and the current one.
|
*
|
* @param version The version to be compared to the current one.
|
* @return The minimal protocol version.
|
*/
|
public static short minWithCurrent(short version)
|
{
|
short newVersion = (version < currentVersion ? version : currentVersion);
|
return newVersion;
|
}
|
}
|
