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Add ibc ante handler #808

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53 changes: 53 additions & 0 deletions app/ante.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,53 @@
package app

import (
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/auth/ante"

ibckeeper "github.com/cosmos/ibc-go/v7/modules/core/keeper"

ibcante "github.com/cosmos/ibc-go/v7/modules/core/ante"
)

// HandlerOptions are the options required for constructing a default SDK AnteHandler.
type HandlerOptions struct {
ante.HandlerOptions

IBCKeeper *ibckeeper.Keeper
}

// 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, sdkerrors.Wrap(sdkerrors.ErrLogic, "account keeper is required for ante builder")
}

if options.BankKeeper == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "bank keeper is required for ante builder")
}

if options.SignModeHandler == nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "sign mode handler is required for ante builder")
}

anteDecorators := []sdk.AnteDecorator{
ante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
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
}
17 changes: 10 additions & 7 deletions app/app.go
Original file line number Diff line number Diff line change
Expand Up @@ -826,13 +826,16 @@ func NewStrideApp(
app.SetInitChainer(app.InitChainer)
app.SetBeginBlocker(app.BeginBlocker)

anteHandler, err := ante.NewAnteHandler(
ante.HandlerOptions{
AccountKeeper: app.AccountKeeper,
BankKeeper: app.BankKeeper,
SignModeHandler: encodingConfig.TxConfig.SignModeHandler(),
FeegrantKeeper: app.FeeGrantKeeper,
SigGasConsumer: ante.DefaultSigVerificationGasConsumer,
anteHandler, err := NewAnteHandler(
HandlerOptions{
HandlerOptions: ante.HandlerOptions{
AccountKeeper: app.AccountKeeper,
BankKeeper: app.BankKeeper,
SignModeHandler: encodingConfig.TxConfig.SignModeHandler(),
FeegrantKeeper: app.FeeGrantKeeper,
SigGasConsumer: ante.DefaultSigVerificationGasConsumer,
},
IBCKeeper: app.IBCKeeper,
},
)
if err != nil {
Expand Down