/**
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
*/
/*
* Created on Jun 13, 2010
*/
package com.bigdata.ha;
import cern.colt.Arrays;
/**
* The 2-phase prepare outcome as coordinated by the leader.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public class PrepareResponse {
private final int k;
private final int nyes;
private final boolean willCommit;
private final boolean[] votes;
/**
* The replication factor for the quorum.
*/
public int replicationFactor() {
return k;
}
/**
* Return the #of services that voted "YES".
*/
public int getYesCount() {
return nyes;
}
/**
* Return <code>true</code> iff the transaction will commit based on the
* responses to the prepare requests.
*/
public boolean willCommit() {
return willCommit;
}
public boolean getVote(final int index) {
return votes[index];
}
/**
*
* @param k
* The replication factor for the quorum.
* @param nyes
* The #of YES votes.
* @param willCommit
* <code>true</code> iff the transaction will commit based on the
* responses to the prepare requests.
*/
public PrepareResponse(final int k, final int nyes,
final boolean willCommit, final boolean[] votes) {
if (k < 1)
throw new IllegalArgumentException();
if (nyes > k)
throw new IllegalArgumentException();
this.k = k;
this.nyes = nyes;
this.willCommit = willCommit;
this.votes = votes;
}
@Override
public String toString() {
return super.toString() + "{k=" + k + ", nyes=" + nyes
+ ", willCommit=" + willCommit + ", votes="
+ Arrays.toString(votes) + "}";
}
}