Auction Sniper is an application that watches online auctions and automatically bids slightly higher whenever the price changes, until it reaches a stop-price or the auction closes.
This is a worked example from GOOS book.
Thanks skinny85 for great step-by-step commit history.
- Item: something that can be identified and bought.
- Bidder: a person or organization that is interested in buying an item.
- Bid: a statement that a bidder will pay a given price for an item.
- Current price: the current highest bid for the item.
- Stop price: the most a bidder is prepared to pay for an item.
- Auction: a process for managing bids for an item.
- Auction house: an institution that hosts auctions.
The protocol is used for messages between a bidder and an auction house.
Bidder sends commands:
- Join: a bidder joins an auction.
- Bid: a bidder sends a bidding price to the auction.
SOLVersion: 1.1; Command: JOIN;
SOLVersion: 1.1; Command: BID; Price: 199;
Auction sends events:
- Price: an auction reports the currently accepted price, minimum increment, and the name of bidder who bid this price.
- Close: an auction announces that it has closed. The winner of the last price event has won the auction.
SOLVersion: 1.1; Event: PRICE; CurrentPrice: 192; Increment: 7; Bidder: Someone else;
SOLVersion: 1.1; Event: CLOSE;
$ cd src/e2eTest/fixtures
$ OPENFIRE_VERSION=4.6.0beta docker-compose up$ OPENFIRE_VERSION=4.6.0beta docker-compose down$ ./gradlew e2eTest