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ante.go
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ante.go
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package simapp
import (
wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
wasmTypes "github.com/CosmWasm/wasmd/x/wasm/types"
errors "cosmossdk.io/errors"
"github.com/cosmos/cosmos-sdk/codec"
storetypes "github.com/cosmos/cosmos-sdk/store/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/auth/ante"
ibcante "github.com/cosmos/ibc-go/v7/modules/core/ante"
ibckeeper "github.com/cosmos/ibc-go/v7/modules/core/keeper"
)
// HandlerOptions extends the SDK's AnteHandler options by requiring the IBC
// channel keeper.
type HandlerOptions struct {
ante.HandlerOptions
IBCKeeper *ibckeeper.Keeper
TxCounterStoreKey storetypes.StoreKey
WasmConfig wasmTypes.WasmConfig
Cdc codec.BinaryCodec
}
// NewAnteHandler returns an AnteHandler that checks and increments sequence
// numbers, checks signatures & account numbers, and deducts fees from the first
// signer.
func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
if options.AccountKeeper == nil {
return nil, errors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
}
if options.BankKeeper == nil {
return nil, errors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
}
if options.SignModeHandler == nil {
return nil, errors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
}
anteDecorators := []sdk.AnteDecorator{
ante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
wasmkeeper.NewLimitSimulationGasDecorator(options.WasmConfig.SimulationGasLimit),
wasmkeeper.NewCountTXDecorator(options.TxCounterStoreKey),
ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
ante.NewValidateBasicDecorator(),
ante.NewTxTimeoutHeightDecorator(),
ante.NewValidateMemoDecorator(options.AccountKeeper),
ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
ante.NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper, options.TxFeeChecker),
ante.NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
ante.NewValidateSigCountDecorator(options.AccountKeeper),
ante.NewSigGasConsumeDecorator(options.AccountKeeper, options.SigGasConsumer),
ante.NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
ante.NewIncrementSequenceDecorator(options.AccountKeeper),
ibcante.NewRedundantRelayDecorator(options.IBCKeeper),
}
return sdk.ChainAnteDecorators(anteDecorators...), nil
}