bidding-service.md

Bidding service

Manages bids on items.

Queries handled

• getBids - Gets all the bids for an item.

Events emitted

• BidPlaced - When a bid is placed, in response to placeBid.
• BiddingFinished - When bidding has finished, in response to finishBidding.

Commands handled

External (user)

• placeBid - Places a bid, if the bid is greater than the current bid, emits BidPlaced.

Internal

• finishBidding - Triggered by scheduled task that polls a read side view of auctions to finish, emits BiddingFinished

Events consumed

Item service

• AuctionStarted - Creates a new auction for the item
• AuctionCancelled - Completes an auction prematurely