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/*
This file is part of GNUnet.
(C) 2012, 2013 Christian Grothoff (and other contributing authors)
GNUnet 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; either version 3, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
package org.gnunet.voting;
import com.google.common.collect.Maps;
import org.gnunet.mesh.Mesh;
import org.gnunet.mesh.MeshRunabout;
import org.gnunet.testbed.CompressedConfig;
import org.gnunet.util.*;
import org.gnunet.voting.messages.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.*;
public class TallyAuthorityDaemon extends Program {
private static final Logger logger = LoggerFactory
.getLogger(TallyAuthorityDaemon.class);
public static final int MESH_PORT = 1002;
private Mesh mesh;
private HashMap<HashCode, ElectionState> elections = Maps.newHashMap();
class ElectionState {
Ballot ballot;
/**
* Set of voters that have submitted their ballot.
*/
Set<CryptoECC.PublicKey> voters = new HashSet<CryptoECC.PublicKey>();
/**
* Maping from choice to number of votes for that choice.
*/
int[] tally;
}
private class TallyMeshReceiver extends MeshRunabout {
public void visit(SubmitMessage m) {
ElectionState electionState = elections.get(m.ballotGuid);
if (null == electionState) {
return;
}
if (m.choiceId < 0 || m.choiceId >= electionState.tally.length) {
return;
}
electionState.tally[m.choiceId] += 1;
SubmitResponseMessage rm = new SubmitResponseMessage();
getSender().send(rm);
getSender().receiveDone();
}
public void visit(BallotRegisterRequestMessage m) {
logger.info("ballot register requested");
CompressedConfig ccfg = new CompressedConfig(m.compressedBallotConfig);
Ballot b = new Ballot(ccfg.decompress());
ElectionState electionState = new ElectionState();
electionState.tally = new int[b.choices.size()];
electionState.ballot = b;
elections.put(b.getBallotGuid(), electionState);
BallotRegisterRespondMessage rm = new BallotRegisterRespondMessage();
rm.registrationSignature = CryptoECC.Signature.randomSignature();
getSender().send(rm);
getSender().receiveDone();
}
public void visit(QueryMessage m) {
ElectionState electionState = elections.get(m.ballotGUID);
if (null == electionState) {
QueryFailureMessage rm = new QueryFailureMessage();
getSender().send(rm);
} else {
QueryResponseMessage rm = new QueryResponseMessage();
rm.results = electionState.tally;
getSender().send(rm);
}
getSender().receiveDone();
}
}
public TallyAuthorityDaemon(String[] args) {
super(args);
}
public static void main(String[] args) {
TallyAuthorityDaemon daemon = new TallyAuthorityDaemon(args);
daemon.start();
}
@Override
public void run() {
logger.info("running tally daemon");
mesh = new Mesh(getConfiguration(), null, null, new TallyMeshReceiver(), MESH_PORT);
}
}
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