/**
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 java.util.UUID;
import com.bigdata.rawstore.IRawStore;
/**
* Message used to read a record from an {@link IRawStore} managed by a remote
* service. Services MUST NOT refer this message to another service. If the read
* can not be satisfied, for example because the {@link IRawStore} has been
* released or because there is a checksum error when reading on the
* {@link IRawStore}, then that exception should be thrown back to the caller.
*/
public interface IHAReadRequest extends IHAMessage {
/**
* The quorum token for which the read was issued.
*/
long getQuorumToken();
/**
* The {@link UUID} identifying the {@link IRawStore} for which the record
* was requested (optional, defaults to the current Journal).
* <p>
* Note: This parameter is intended for scale-out if there is a need to
* fetch the root block of a historical journal (versus the live journal).
*/
UUID getStoreUUID();
/**
* The address of the record.
*/
long getAddr();
}