/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.bigdata.ha.msg;
import com.bigdata.ha.pipeline.HAReceiveService;
/**
* Glue class wraps the {@link IHAWriteMessage} and the {@link IHALogRequest}
* message and exposes the requires {@link IHAMessage} interface to the
* {@link HAReceiveService}. This class is never persisted. It just let's us
* handshake with the {@link HAReceiveService} and get back out the original
* {@link IHAWriteMessage} as well as the optional {@link IHALogRequest}
* message.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public class HAMessageWrapper extends HAWriteMessageBase implements
IHAMessageWrapper {
private static final long serialVersionUID = 1L;
private final IHASyncRequest req;
private final IHASendState snd;
private final IHAWriteMessageBase msg;
public HAMessageWrapper(final IHASyncRequest req, final IHASendState snd,
final IHAWriteMessageBase msg) {
// Use size and checksum from real IHAWriteMessage.
super(msg.getSize(), msg.getChk());
this.req = req; // MAY be null;
this.snd = snd;
this.msg = msg;
}
@Override
public IHASyncRequest getHASyncRequest() {
return req;
}
@Override
public IHASendState getHASendState() {
return snd;
}
@Override
public IHAWriteMessageBase getHAWriteMessage() {
return msg;
}
/**
* Return the {@link IHASendState#getMarker()} iff there is an associated
* {@link IHASendState} and otherwise <code>null</code>.
*/
public byte[] getMarker() {
return snd == null ? null : snd.getMarker();
}
}