(no commit message provided)

app/ante.go

@@ -0,0 +1,74 @@
+package app
+
+import (
+	"errors"
+
+	ibcante "github.com/cosmos/ibc-go/v8/modules/core/ante"
+	"github.com/cosmos/ibc-go/v8/modules/core/keeper"
+
+	circuitante "cosmossdk.io/x/circuit/ante"
+	circuitkeeper "cosmossdk.io/x/circuit/keeper"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/auth/ante"
+	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
+
+	sdkmath "cosmossdk.io/math"
+	poaante "github.com/strangelove-ventures/poa/ante"
+
+	globalfeeante "github.com/strangelove-ventures/globalfee/x/globalfee/ante"
+	globalfeekeeper "github.com/strangelove-ventures/globalfee/x/globalfee/keeper"
+)
+
+// HandlerOptions extend the SDK's AnteHandler options by requiring the IBC
+// channel keeper.
+type HandlerOptions struct {
+	ante.HandlerOptions
+	IBCKeeper            *keeper.Keeper
+	CircuitKeeper        *circuitkeeper.Keeper
+	StakingKeeper        *stakingkeeper.Keeper
+	GlobalFeeKeeper      globalfeekeeper.Keeper
+	BypassMinFeeMsgTypes []string
+}
+
+// NewAnteHandler constructor
+func NewAnteHandler(options HandlerOptions) (sdk.AnteHandler, error) {
+	if options.AccountKeeper == nil {
+		return nil, errors.New("account keeper is required for ante builder")
+	}
+	if options.BankKeeper == nil {
+		return nil, errors.New("bank keeper is required for ante builder")
+	}
+	if options.SignModeHandler == nil {
+		return nil, errors.New("sign mode handler is required for ante builder")
+	}
+	if options.CircuitKeeper == nil {
+		return nil, errors.New("circuit keeper is required for ante builder")
+	}
+
+	poaDoGenTxRateValidation := false
+	poaRateFloor := sdkmath.LegacyMustNewDecFromStr("0.10")
+	poaRateCeil := sdkmath.LegacyMustNewDecFromStr("0.50")
+
+	anteDecorators := []sdk.AnteDecorator{
+		ante.NewSetUpContextDecorator(), // outermost AnteDecorator. SetUpContext must be called first
+		circuitante.NewCircuitBreakerDecorator(options.CircuitKeeper),
+		ante.NewExtensionOptionsDecorator(options.ExtensionOptionChecker),
+		ante.NewValidateBasicDecorator(),
+		ante.NewTxTimeoutHeightDecorator(),
+		ante.NewValidateMemoDecorator(options.AccountKeeper),
+		ante.NewConsumeGasForTxSizeDecorator(options.AccountKeeper),
+		globalfeeante.NewFeeDecorator(options.BypassMinFeeMsgTypes, options.GlobalFeeKeeper, options.StakingKeeper, 2_000_000),
+		// 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),
+		poaante.NewPOADisableStakingDecorator(),
+		poaante.NewCommissionLimitDecorator(poaDoGenTxRateValidation, poaRateFloor, poaRateCeil),
+	}
+
+	return sdk.ChainAnteDecorators(anteDecorators...), nil
+}