59 lines
2.3 KiB
Go
59 lines
2.3 KiB
Go
package ante
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import (
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/types/tx/signing"
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authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
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"github.com/cosmos/cosmos-sdk/x/auth/types"
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)
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// HandlerOptions are the options required for constructing a default SDK AnteHandler.
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type HandlerOptions struct {
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AccountKeeper AccountKeeper
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BankKeeper types.BankKeeper
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FeegrantKeeper FeegrantKeeper
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SignModeHandler authsigning.SignModeHandler
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SigGasConsumer func(meter sdk.GasMeter, sig signing.SignatureV2, params types.Params) error
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}
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// NewAnteHandler returns an AnteHandler that checks and increments sequence
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// numbers, checks signatures & account numbers, and deducts fees from the first
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// signer.
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func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
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if options.AccountKeeper == nil {
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return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
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}
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if options.BankKeeper == nil {
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return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
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}
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if options.SignModeHandler == nil {
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return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
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}
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var sigGasConsumer = options.SigGasConsumer
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if sigGasConsumer == nil {
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sigGasConsumer = DefaultSigVerificationGasConsumer
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}
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anteDecorators := []sdk.AnteDecorator{
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NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
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NewRejectExtensionOptionsDecorator(),
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NewMempoolFeeDecorator(),
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NewValidateBasicDecorator(),
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TxTimeoutHeightDecorator{},
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NewValidateMemoDecorator(options.AccountKeeper),
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NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
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NewDeductFeeDecorator(options.AccountKeeper, options.BankKeeper, options.FeegrantKeeper),
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NewSetPubKeyDecorator(options.AccountKeeper), // SetPubKeyDecorator must be called before all signature verification decorators
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NewValidateSigCountDecorator(options.AccountKeeper),
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NewSigGasConsumeDecorator(options.AccountKeeper, sigGasConsumer),
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NewSigVerificationDecorator(options.AccountKeeper, options.SignModeHandler),
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NewIncrementSequenceDecorator(options.AccountKeeper),
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}
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return sdk.ChainAnteDecorators(anteDecorators...), nil
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}
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