package ante import ( "math/big" sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" ) // GasWantedDecorator keeps track of the gasWanted amount on the current block in transient store // for BaseFee calculation. // NOTE: This decorator does not perform any validation type GasWantedDecorator struct { evmKeeper EVMKeeper feeMarketKeeper FeeMarketKeeper } // NewGasWantedDecorator creates a new NewGasWantedDecorator func NewGasWantedDecorator( evmKeeper EVMKeeper, feeMarketKeeper FeeMarketKeeper, ) GasWantedDecorator { return GasWantedDecorator{ evmKeeper, feeMarketKeeper, } } func (gwd GasWantedDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) { params := gwd.evmKeeper.GetParams(ctx) ethCfg := params.ChainConfig.EthereumConfig(gwd.evmKeeper.ChainID()) blockHeight := big.NewInt(ctx.BlockHeight()) isLondon := ethCfg.IsLondon(blockHeight) feeTx, ok := tx.(sdk.FeeTx) if !ok || !isLondon { return next(ctx, tx, simulate) } gasWanted := feeTx.GetGas() feeMktParams := gwd.feeMarketKeeper.GetParams(ctx) // Add total gasWanted to cumulative in block transientStore in FeeMarket module if feeMktParams.IsBaseFeeEnabled(ctx.BlockHeight()) { if _, err := gwd.feeMarketKeeper.AddTransientGasWanted(ctx, gasWanted); err != nil { return ctx, sdkerrors.Wrapf(err, "failed to add gas wanted to transient store") } } return next(ctx, tx, simulate) }