/*
* The repsonding AL will be starting from zero state and thus would normally generate a
* "permissive" LAST that permits the leader (also at zero state) to make a new proposal
* immediately. We want the leader to have to clear out a previous proposal prior to that. So
* we replace the "permissive" last, introducing a valid LAST that should cause the leader to
* deliver up the included value and then re-propose(non-Javadoc) the original value above.
*/
public void send(Packet aPacket, InetSocketAddress anAddr) {
if (_seenLast) _tp.send(aPacket, anAddr);
else {
if (aPacket.getMessage().getType() == PaxosMessage.Types.LAST) {
ByteBuffer myBuffer = ByteBuffer.allocate(4);
myBuffer.putInt(66);
Last myOrig = (Last) aPacket.getMessage();
_seenLast = true;
_tp.send(
_tp.getPickler()
.newPacket(
new Last(
myOrig.getSeqNum(),
myOrig.getLowWatermark(),
myOrig.getRndNumber() + 1,
new Proposal("data", myBuffer.array()))),
anAddr);
} else {
_tp.send(aPacket, anAddr);
}
}
}
public InetSocketAddress getBroadcastAddress() {
return _tp.getBroadcastAddress();
}
public InetSocketAddress getLocalAddress() {
return _tp.getLocalAddress();
}
public void routeTo(Dispatcher aDispatcher) throws Exception {
_tp.routeTo(aDispatcher);
}
public FailureDetector getFD() {
return _tp.getFD();
}
public Transport.PacketPickler getPickler() {
return _tp.getPickler();
}