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ante.go
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ante.go
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package dex
import (
"errors"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkacltypes "github.com/cosmos/cosmos-sdk/types/accesscontrol"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
dexcache "github.com/fibonacci-chain/core/x/dex/cache"
"github.com/fibonacci-chain/core/x/dex/keeper"
"github.com/fibonacci-chain/core/x/dex/types"
"github.com/fibonacci-chain/core/x/dex/utils"
)
// TickSizeMultipleDecorator check if the place order tx's price is multiple of
// tick size
type TickSizeMultipleDecorator struct {
dexKeeper keeper.Keeper
}
// NewTickSizeMultipleDecorator returns new ticksize multiple check decorator instance
func NewTickSizeMultipleDecorator(dexKeeper keeper.Keeper) TickSizeMultipleDecorator {
return TickSizeMultipleDecorator{
dexKeeper: dexKeeper,
}
}
// AnteHandle is the interface called in RunTx() function, which CheckTx() calls with the runTxModeCheck mode
func (tsmd TickSizeMultipleDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
if ctx.IsReCheckTx() {
return next(ctx, tx, simulate)
}
if !simulate {
if ctx.IsCheckTx() {
err := tsmd.CheckTickSizeMultiple(ctx, tx.GetMsgs())
if err != nil {
return ctx, err
}
}
}
return next(ctx, tx, simulate)
}
// CheckTickSizeMultiple checks whether the msgs comply with ticksize
func (tsmd TickSizeMultipleDecorator) CheckTickSizeMultiple(ctx sdk.Context, msgs []sdk.Msg) error {
for _, msg := range msgs {
switch msg.(type) { //nolint:gocritic,gosimple // the linter is telling us we can make this faster, and this should be addressed later.
case *types.MsgPlaceOrders:
msgPlaceOrders := msg.(*types.MsgPlaceOrders) //nolint:gosimple // the linter is telling us we can make this faster, and this should be addressed later.
contractAddr := msgPlaceOrders.ContractAddr
for _, order := range msgPlaceOrders.Orders {
priceTickSize, found := tsmd.dexKeeper.GetPriceTickSizeForPair(ctx, contractAddr,
types.Pair{
PriceDenom: order.PriceDenom,
AssetDenom: order.AssetDenom,
})
if !found {
return sdkerrors.Wrapf(sdkerrors.ErrKeyNotFound, "the pair {price:%s,asset:%s} has no price ticksize configured", order.PriceDenom, order.AssetDenom)
}
if !IsDecimalMultipleOf(order.Price, priceTickSize) {
// Allow Market Orders with Price 0
if !(IsMarketOrder(order) && order.Price.IsZero()) {
return sdkerrors.Wrapf(errors.New("ErrPriceNotMultipleOfTickSize"), "price needs to be non-zero and multiple of price tick size")
}
}
quantityTickSize, found := tsmd.dexKeeper.GetQuantityTickSizeForPair(ctx, contractAddr,
types.Pair{
PriceDenom: order.PriceDenom,
AssetDenom: order.AssetDenom,
})
if !found {
return sdkerrors.Wrapf(sdkerrors.ErrKeyNotFound, "the pair {price:%s,asset:%s} has no quantity ticksize configured", order.PriceDenom, order.AssetDenom)
}
if !IsDecimalMultipleOf(order.Quantity, quantityTickSize) {
return sdkerrors.Wrapf(errors.New("ErrQuantityNotMultipleOfTickSize"), "quantity needs to be non-zero and multiple of quantity tick size")
}
}
continue
default:
// e.g. liquidation order don't come with price so always pass this check
return nil
}
}
return nil
}
// Check whether order is market order type
func IsMarketOrder(order *types.Order) bool {
return order.OrderType == types.OrderType_MARKET || order.OrderType == types.OrderType_FOKMARKET || order.OrderType == types.OrderType_FOKMARKETBYVALUE
}
// Check whether decimal a is multiple of decimal b
func IsDecimalMultipleOf(a, b sdk.Dec) bool {
if a.LT(b) {
return false
}
quotient := sdk.NewDecFromBigInt(a.Quo(b).RoundInt().BigInt())
return quotient.Mul(b).Equal(a)
}
const DexGasFeeUnit = "ufibo"
type CheckDexGasDecorator struct {
dexKeeper keeper.Keeper
checkTxMemState *dexcache.MemState
}
func NewCheckDexGasDecorator(dexKeeper keeper.Keeper, checkTxMemState *dexcache.MemState) CheckDexGasDecorator {
return CheckDexGasDecorator{
dexKeeper: dexKeeper,
checkTxMemState: checkTxMemState,
}
}
// for a TX that contains dex gas-incurring messages, check if it provides enough gas based on dex params
func (d CheckDexGasDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
if ctx.IsReCheckTx() {
return next(ctx, tx, simulate)
}
params := d.dexKeeper.GetParams(ctx)
dexGasRequired := uint64(0)
var memState *dexcache.MemState
if ctx.IsCheckTx() {
memState = d.checkTxMemState
} else {
memState = utils.GetMemState(ctx.Context())
}
for _, msg := range tx.GetMsgs() {
switch m := msg.(type) {
case *types.MsgPlaceOrders:
numDependencies := len(memState.GetContractToDependencies(ctx, m.ContractAddr, d.dexKeeper.GetContractWithoutGasCharge))
dexGasRequired += params.DefaultGasPerOrder * uint64(len(m.Orders)*numDependencies)
for _, order := range m.Orders {
dexGasRequired += params.DefaultGasPerOrderDataByte * uint64(len(order.Data))
}
case *types.MsgCancelOrders:
numDependencies := len(memState.GetContractToDependencies(ctx, m.ContractAddr, d.dexKeeper.GetContractWithoutGasCharge))
dexGasRequired += params.DefaultGasPerCancel * uint64(len(m.Cancellations)*numDependencies)
}
}
if dexGasRequired == 0 {
return next(ctx, tx, simulate)
}
dexFeeRequired := sdk.NewDecWithPrec(int64(dexGasRequired), 0).Mul(params.SudoCallGasPrice).RoundInt()
feeTx, ok := tx.(sdk.FeeTx)
if !ok {
return ctx, sdkerrors.Wrap(sdkerrors.ErrTxDecode, "Tx must be a FeeTx")
}
for _, fee := range feeTx.GetFee() {
if fee.Denom == DexGasFeeUnit && fee.Amount.GTE(dexFeeRequired) {
return next(ctx, tx, simulate)
}
}
return ctx, sdkerrors.ErrInsufficientFee
}
func (d CheckDexGasDecorator) AnteDeps(txDeps []sdkacltypes.AccessOperation, tx sdk.Tx, txIndex int, next sdk.AnteDepGenerator) (newTxDeps []sdkacltypes.AccessOperation, err error) {
deps := []sdkacltypes.AccessOperation{}
for _, msg := range tx.GetMsgs() {
// Error checking will be handled in AnteHandler
switch msg.(type) {
case *types.MsgPlaceOrders, *types.MsgCancelOrders:
deps = append(deps, []sdkacltypes.AccessOperation{
// read the dex contract info
{
ResourceType: sdkacltypes.ResourceType_KV_DEX_CONTRACT,
AccessType: sdkacltypes.AccessType_READ,
IdentifierTemplate: "*",
},
}...)
default:
continue
}
}
return next(append(txDeps, deps...), tx, txIndex)
}