switch bid tracking to in-memory

x/cosmostest/keeper/msg_server_new_bid.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"math/big"
 
+	"cosmos-test/x/cosmostest/memdb"
 	"cosmos-test/x/cosmostest/types"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -13,7 +14,7 @@ import (
 func (k msgServer) NewBid(goCtx context.Context, msg *types.MsgNewBid) (*types.MsgNewBidResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 
-	auction, found := k.Keeper.GetAuction(ctx, msg.AuctionIndex)
+	_, found := k.Keeper.GetAuction(ctx, msg.AuctionIndex)
 	if !found {
 		return nil, fmt.Errorf("didn't find auction of index %s", msg.AuctionIndex)
 	}
@@ -28,12 +29,14 @@ func (k msgServer) NewBid(goCtx context.Context, msg *types.MsgNewBid) (*types.M
 		return nil, fmt.Errorf("bid amount must be greater than 0")
 	}
 
-	amtPrev := big.NewInt(0)
-	if len(auction.Bids) > 0 {
-		// shouldn't need to check validity, because we assume it's checked
-		// before approving & inserting the bid
-		latestBid := auction.Bids[len(auction.Bids)-1]
-		amtPrev, _ = amtPrev.SetString(latestBid.Amount, 10)
+	highestBid, err := memdb.BidDB.GetHighestBid(msg.AuctionIndex)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get highest bid: %s", err)
+	}
+	amtPrev := new(big.Int)
+	amtPrev, ok = amtPrev.SetString(highestBid.Amount, 10)
+	if !ok { // this should have been checked before, but whatever
+		return nil, fmt.Errorf("failed to convert max bid (%s) to a large integer", msg.Amount)
 	}
 
 	if amt.Cmp(amtPrev) < 1 {
@@ -44,9 +47,11 @@ func (k msgServer) NewBid(goCtx context.Context, msg *types.MsgNewBid) (*types.M
 		Amount: msg.Amount,
 		Owner:  msg.Creator,
 	}
-	auction.Bids = append(auction.Bids, bid)
 
-	k.Keeper.SetAuction(ctx, auction)
+	memdb.BidDB.AddBid(msg.AuctionIndex, bid)
+
+	// auction.Bids = append(auction.Bids, bid)
+	// k.Keeper.SetAuction(ctx, auction)
 
 	return &types.MsgNewBidResponse{}, nil
 }