/**
* This method is invoked when a round finishes
*
* @see gridsim.auction.OneSidedAuction#onClose(int)
*/
public void onClose(int round) {
// our implementation of the first price sealed auction has
// a single round. So, since we are using a reverse auction, the
// lowest bid is the best one
MessageBid best = getFirstBid(-1);
if (best != null) {
double price = best.getPrice();
// if the price of the bid is below the reserve price, it means
// that the broker will accept the offer and will send the job
// to be executed by the resource provider
if (price <= super.getReservePrice()) {
super.setFinalPrice(price);
super.setWinner(best.getBidder());
} else {
super.setFinalPrice(super.getCurrentPrice());
}
} else {
// there is no best bid, what means that no resource provider
// has bidden to execute the job
super.setFinalPrice(super.getCurrentPrice());
}
}
/**
* This method is called when a round is started
*
* @see gridsim.auction.OneSidedAuction#onStart(int)
*/
public void onStart(int round) {
super.setMinPrice(super.getReservePrice());
super.setCurrentPrice(super.getReservePrice());
// Creates a call for proposal that is broadcast to all bidders
MessageCallForBids msg =
new MessageCallForBids(
super.getAuctionID(),
super.getAuctionProtocol(),
super.getMinPrice(),
super.currentRound());
msg.setAttributes(super.getAttributes());
super.broadcastMessage(msg);
}
/**
* This method is called when the auction finishes
*
* @see gridsim.auction.OneSidedAuction#onStop()
*/
public void onStop() {
int winner = super.getWinner();
// broadcasts a message to all bidders informing about the
// outcome of the auction
MessageInformOutcome iout =
new MessageInformOutcome(
super.getAuctionID(), super.getAuctionProtocol(), winner, super.getFinalPrice());
super.broadcastMessage(iout);
}
