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https://github.com/0glabs/0g-chain.git
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Add changes from code review
This commit is contained in:
Jack Zampolin
parent
471565e360
commit
f86d0f3c3b
@ -20,6 +20,7 @@ func (k Keeper) StartSurplusAuction(ctx sdk.Context, seller string, lot sdk.Coin
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types.DistantFuture,
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)
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// NOTE: for the duration of the auction the auction module account holds the lot
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err := k.supplyKeeper.SendCoinsFromModuleToModule(ctx, seller, types.ModuleName, sdk.NewCoins(lot))
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if err != nil {
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return 0, err
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@ -36,7 +37,7 @@ func (k Keeper) StartSurplusAuction(ctx sdk.Context, seller string, lot sdk.Coin
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", auction.GetID())),
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sdk.NewAttribute(types.AttributeKeyAuctionType, auction.GetType()),
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sdk.NewAttribute(types.AttributeKeyBidDenom, auction.Bid.Denom),
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sdk.NewAttribute(types.AttributeKeyLotDenom, auction.Lot.Denom),
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sdk.NewAttribute(types.AttributeKeyLot, auction.Lot.String()),
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),
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)
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return auctionID, nil
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@ -50,14 +51,17 @@ func (k Keeper) StartDebtAuction(ctx sdk.Context, buyer string, bid sdk.Coin, in
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bid,
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initialLot,
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types.DistantFuture,
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debt)
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debt,
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)
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// This auction type mints coins at close. Need to check module account has minting privileges to avoid potential err in endblocker.
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macc := k.supplyKeeper.GetModuleAccount(ctx, buyer)
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if !macc.HasPermission(supply.Minter) {
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// TODO: this should panic?
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return 0, sdkerrors.Wrap(types.ErrInvalidModulePermissions, supply.Minter)
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}
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// NOTE: for the duration of the auction the auction module account holds the debt
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err := k.supplyKeeper.SendCoinsFromModuleToModule(ctx, buyer, types.ModuleName, sdk.NewCoins(debt))
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if err != nil {
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return 0, err
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@ -74,7 +78,7 @@ func (k Keeper) StartDebtAuction(ctx sdk.Context, buyer string, bid sdk.Coin, in
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", auction.GetID())),
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sdk.NewAttribute(types.AttributeKeyAuctionType, auction.GetType()),
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sdk.NewAttribute(types.AttributeKeyBidDenom, auction.Bid.Denom),
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sdk.NewAttribute(types.AttributeKeyLotDenom, auction.Lot.Denom),
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sdk.NewAttribute(types.AttributeKeyLot, auction.Lot.String()),
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),
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)
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return auctionID, nil
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@ -98,6 +102,7 @@ func (k Keeper) StartCollateralAuction(
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debt,
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)
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// NOTE: for the duration of the auction the auction module account holds the debt and the lot
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err = k.supplyKeeper.SendCoinsFromModuleToModule(ctx, seller, types.ModuleName, sdk.NewCoins(lot))
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if err != nil {
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return 0, err
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@ -118,7 +123,8 @@ func (k Keeper) StartCollateralAuction(
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", auction.GetID())),
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sdk.NewAttribute(types.AttributeKeyAuctionType, auction.GetType()),
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sdk.NewAttribute(types.AttributeKeyBidDenom, auction.Bid.Denom),
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sdk.NewAttribute(types.AttributeKeyLotDenom, auction.Lot.Denom),
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sdk.NewAttribute(types.AttributeKeyLot, auction.Lot.String()),
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sdk.NewAttribute(types.AttributeKeyMaxBidAmount, auction.MaxBid.String()),
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),
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)
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return auctionID, nil
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@ -218,7 +224,7 @@ func (k Keeper) PlaceBidSurplus(ctx sdk.Context, a types.SurplusAuction, bidder
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types.EventTypeAuctionBid,
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", a.ID)),
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sdk.NewAttribute(types.AttributeKeyBidder, a.Bidder.String()),
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sdk.NewAttribute(types.AttributeKeyBidAmount, a.Bid.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyBid, a.Bid.String()),
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sdk.NewAttribute(types.AttributeKeyEndTime, fmt.Sprintf("%d", a.EndTime.Unix())),
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),
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)
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@ -233,6 +239,7 @@ func (k Keeper) PlaceForwardBidCollateral(ctx sdk.Context, a types.CollateralAuc
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return a, sdkerrors.Wrapf(types.ErrInvalidBidDenom, "%s ≠ %s", bid.Denom, a.Bid.Denom)
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}
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if a.IsReversePhase() {
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// TODO: panic maybe?
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return a, sdkerrors.Wrapf(types.ErrCollateralAuctionIsInReversePhase, "%d", a.ID)
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}
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minNewBidAmt := a.Bid.Amount.Add( // new bids must be some % greater than old bid, and at least 1 larger to avoid replacing an old bid at no cost
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@ -294,7 +301,7 @@ func (k Keeper) PlaceForwardBidCollateral(ctx sdk.Context, a types.CollateralAuc
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types.EventTypeAuctionBid,
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", a.ID)),
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sdk.NewAttribute(types.AttributeKeyBidder, a.Bidder.String()),
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sdk.NewAttribute(types.AttributeKeyBidAmount, a.Bid.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyBid, a.Bid.String()),
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sdk.NewAttribute(types.AttributeKeyEndTime, fmt.Sprintf("%d", a.EndTime.Unix())),
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),
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)
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@ -309,6 +316,7 @@ func (k Keeper) PlaceReverseBidCollateral(ctx sdk.Context, a types.CollateralAuc
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return a, sdkerrors.Wrapf(types.ErrInvalidLotDenom, lot.Denom, a.Lot.Denom)
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}
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if !a.IsReversePhase() {
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// TODO: Panic here?
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return a, sdkerrors.Wrapf(types.ErrCollateralAuctionIsInForwardPhase, "%d", a.ID)
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}
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maxNewLotAmt := a.Lot.Amount.Sub( // new lot must be some % less than old lot, and at least 1 smaller to avoid replacing an old bid at no cost
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@ -336,16 +344,20 @@ func (k Keeper) PlaceReverseBidCollateral(ctx sdk.Context, a types.CollateralAuc
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return a, err
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}
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}
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// Decrease in lot is sent to weighted addresses (normally the CDP depositors)
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// TODO paying out rateably to cdp depositors is vulnerable to errors compounding over multiple bids - check this can't be gamed.
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// TODO: paying out rateably to cdp depositors is vulnerable to errors compounding over multiple bids - check this can't be gamed.
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lotPayouts, err := splitCoinIntoWeightedBuckets(a.Lot.Sub(lot), a.LotReturns.Weights)
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if err != nil {
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return a, err
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}
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for i, payout := range lotPayouts {
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err = k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, a.LotReturns.Addresses[i], sdk.NewCoins(payout))
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if err != nil {
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return a, err
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// if due to rounding, for whatever reason, the lot amount is 0, don't execute the following code
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if payout.IsPositive() {
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err = k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, a.LotReturns.Addresses[i], sdk.NewCoins(payout))
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if err != nil {
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return a, err
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}
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}
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}
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@ -363,7 +375,7 @@ func (k Keeper) PlaceReverseBidCollateral(ctx sdk.Context, a types.CollateralAuc
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types.EventTypeAuctionBid,
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", a.ID)),
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sdk.NewAttribute(types.AttributeKeyBidder, a.Bidder.String()),
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sdk.NewAttribute(types.AttributeKeyLotAmount, a.Lot.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyLot, a.Lot.String()),
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sdk.NewAttribute(types.AttributeKeyEndTime, fmt.Sprintf("%d", a.EndTime.Unix())),
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),
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)
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@ -429,7 +441,7 @@ func (k Keeper) PlaceBidDebt(ctx sdk.Context, a types.DebtAuction, bidder sdk.Ac
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types.EventTypeAuctionBid,
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", a.ID)),
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sdk.NewAttribute(types.AttributeKeyBidder, a.Bidder.String()),
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sdk.NewAttribute(types.AttributeKeyLotAmount, a.Lot.Amount.String()),
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sdk.NewAttribute(types.AttributeKeyLot, a.Lot.String()),
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sdk.NewAttribute(types.AttributeKeyEndTime, fmt.Sprintf("%d", a.EndTime.Unix())),
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),
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)
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@ -442,10 +454,13 @@ func (k Keeper) CloseAuction(ctx sdk.Context, auctionID uint64) error {
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auction, found := k.GetAuction(ctx, auctionID)
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if !found {
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// TODO: panic if we are closing an auction in BB that isn't in the store?
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// how else would we get here?
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return sdkerrors.Wrapf(types.ErrAuctionNotFound, "%d", auctionID)
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}
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if ctx.BlockTime().Before(auction.GetEndTime()) {
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// TODO: Do we check this upstream? should this be a panic
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return sdkerrors.Wrapf(types.ErrAuctionHasNotExpired, "block time %s, auction end time %s", ctx.BlockTime().UTC(), auction.GetEndTime().UTC())
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}
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@ -473,6 +488,7 @@ func (k Keeper) CloseAuction(ctx sdk.Context, auctionID uint64) error {
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sdk.NewEvent(
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types.EventTypeAuctionClose,
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sdk.NewAttribute(types.AttributeKeyAuctionID, fmt.Sprintf("%d", auction.GetID())),
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// TODO: add closed height here to facilitate the query of the auction after it closes
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),
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)
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return nil
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@ -480,17 +496,23 @@ func (k Keeper) CloseAuction(ctx sdk.Context, auctionID uint64) error {
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// PayoutDebtAuction pays out the proceeds for a debt auction, first minting the coins.
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func (k Keeper) PayoutDebtAuction(ctx sdk.Context, a types.DebtAuction) error {
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// create the coins that are needed to pay off the debt
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err := k.supplyKeeper.MintCoins(ctx, a.Initiator, sdk.NewCoins(a.Lot))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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// send the new coins from the initiator module to the bidder
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err = k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, a.Initiator, a.Bidder, sdk.NewCoins(a.Lot))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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// if there is remaining debt, return it to the calling module to manage
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if a.CorrespondingDebt.IsPositive() {
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err = k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, a.Initiator, sdk.NewCoins(a.CorrespondingDebt))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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}
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@ -499,8 +521,10 @@ func (k Keeper) PayoutDebtAuction(ctx sdk.Context, a types.DebtAuction) error {
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// PayoutSurplusAuction pays out the proceeds for a surplus auction.
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func (k Keeper) PayoutSurplusAuction(ctx sdk.Context, a types.SurplusAuction) error {
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// Send the tokens from the auction module account where they are being managed to the bidder who won the auction
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err := k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, a.Bidder, sdk.NewCoins(a.Lot))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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return nil
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@ -508,13 +532,18 @@ func (k Keeper) PayoutSurplusAuction(ctx sdk.Context, a types.SurplusAuction) er
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// PayoutCollateralAuction pays out the proceeds for a collateral auction.
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func (k Keeper) PayoutCollateralAuction(ctx sdk.Context, a types.CollateralAuction) error {
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// Send the tokens from the auction module account where they are being managed to the bidder who won the auction
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err := k.supplyKeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, a.Bidder, sdk.NewCoins(a.Lot))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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// if there is remaining debt after the auction, send it back to the initiating module for management
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if a.CorrespondingDebt.IsPositive() {
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err = k.supplyKeeper.SendCoinsFromModuleToModule(ctx, types.ModuleName, a.Initiator, sdk.NewCoins(a.CorrespondingDebt))
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if err != nil {
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// TODO: how would we get here? should this be a panic?
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return err
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}
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}
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@ -549,6 +578,7 @@ func earliestTime(t1, t2 time.Time) time.Time {
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func splitCoinIntoWeightedBuckets(coin sdk.Coin, buckets []sdk.Int) ([]sdk.Coin, error) {
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for _, bucket := range buckets {
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if bucket.IsNegative() {
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// TODO: Panic here? How would the code get here (should catch at validation)
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return nil, fmt.Errorf("cannot split %s into bucket with negative weight (%s)", coin.String(), bucket.String())
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}
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}
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@ -74,6 +74,7 @@ func (k Keeper) IncrementNextAuctionID(ctx sdk.Context) error {
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func (k Keeper) StoreNewAuction(ctx sdk.Context, auction types.Auction) (uint64, error) {
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newAuctionID, err := k.GetNextAuctionID(ctx)
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if err != nil {
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// TODO: We might want to panic on this condition
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return 0, err
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}
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auction = auction.WithID(newAuctionID)
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@ -11,7 +11,8 @@ import (
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// https://en.wikipedia.org/wiki/Largest_remainder_method
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// see also: https://stackoverflow.com/questions/13483430/how-to-make-rounded-percentages-add-up-to-100
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func splitIntIntoWeightedBuckets(amount sdk.Int, buckets []sdk.Int) []sdk.Int {
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// TODO ideally change algorithm to work with -ve numbers. Limiting to +ve numbers until them
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// TODO: ideally change algorithm to work with -ve numbers. Limiting to +ve numbers until them
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// TODO: negative buckets don't make sense in this context
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if amount.IsNegative() {
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panic("negative amount")
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}
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@ -6,13 +6,16 @@ const (
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EventTypeAuctionBid = "auction_bid"
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EventTypeAuctionClose = "auction_close"
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AttributeValueCategory = ModuleName
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AttributeKeyAuctionID = "auction_id"
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AttributeKeyAuctionType = "auction_type"
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AttributeKeyBidder = "bidder"
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AttributeKeyBidDenom = "bid_denom"
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AttributeKeyLotDenom = "lot_denom"
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AttributeKeyBidAmount = "bid_amount"
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AttributeKeyLotAmount = "lot_amount"
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AttributeKeyEndTime = "end_time"
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AttributeValueCategory = ModuleName
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AttributeKeyAuctionID = "auction_id"
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AttributeKeyAuctionType = "auction_type"
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AttributeKeyBidder = "bidder"
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AttributeKeyBidDenom = "bid_denom"
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AttributeKeyLotDenom = "lot_denom"
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AttributeKeyLot = "lot"
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AttributeKeyMaxBidAmount = "max_bid"
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AttributeKeyBidAmount = "bid_amount"
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AttributeKeyBid = "bid"
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AttributeKeyLotAmount = "lot_amount"
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AttributeKeyEndTime = "end_time"
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)
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@ -25,6 +25,7 @@ func BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock, k Keeper) {
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err := k.UpdateFeesForAllCdps(ctx, cp.Denom)
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// handle if an error is returned then propagate up
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// TODO: panic here probably for mainnet (optional: have a bool that says panic or no)
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if err != nil {
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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@ -13,8 +13,8 @@ import (
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// 1. updates the fees for the input cdp,
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// 2. sends collateral for all deposits from the cdp module to the liquidator module account
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// 3. Applies the liquidation penalty and mints the corresponding amount of debt coins in the cdp module
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// 3. moves debt coins from the cdp module to the liquidator module account,
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// 4. decrements the total amount of principal outstanding for that collateral type
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// 4. moves debt coins from the cdp module to the liquidator module account,
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// 5. decrements the total amount of principal outstanding for that collateral type
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// (this is the equivalent of saying that fees are no longer accumulated by a cdp once it gets liquidated)
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func (k Keeper) SeizeCollateral(ctx sdk.Context, cdp types.CDP) error {
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// Calculate the previous collateral ratio
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