fix(axelarnet): replace native asset with bond denom for dust amount (a…

…xelarnetwork#2155)

app/app.go

@@ -452,6 +452,7 @@ func initMessageRouter(keepers *KeeperCache) nexusTypes.MessageRouter {
 			axelarbankkeeper.NewBankKeeper(GetKeeper[bankkeeper.BaseKeeper](keepers)),
 			GetKeeper[nexusKeeper.Keeper](keepers),
 			GetKeeper[authkeeper.AccountKeeper](keepers),
+			GetKeeper[stakingkeeper.Keeper](keepers),
 		))
 
 	if IsWasmEnabled() {

x/axelarnet/keeper/message_route.go

@@ -7,7 +7,6 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 
-	"github.com/axelarnetwork/axelar-core/x/axelarnet/exported"
 	"github.com/axelarnetwork/axelar-core/x/axelarnet/types"
 	nexus "github.com/axelarnetwork/axelar-core/x/nexus/exported"
 )
@@ -23,6 +22,7 @@ func NewMessageRoute(
 	bankK types.BankKeeper,
 	nexusK types.Nexus,
 	accountK types.AccountKeeper,
+	stakingK types.StakingKeeper,
 ) nexus.MessageRoute {
 	return func(ctx sdk.Context, routingCtx nexus.RoutingContext, msg nexus.GeneralMessage) error {
 		if routingCtx.Payload == nil {
@@ -34,7 +34,7 @@ func NewMessageRoute(
 			return sdkerrors.Wrap(err, "invalid payload")
 		}
 
-		asset, err := escrowAssetToMessageSender(ctx, keeper, feegrantK, bankK, nexusK, accountK, routingCtx, msg)
+		asset, err := escrowAssetToMessageSender(ctx, keeper, feegrantK, bankK, nexusK, accountK, stakingK, routingCtx, msg)
 		if err != nil {
 			return err
 		}
@@ -54,13 +54,14 @@ func escrowAssetToMessageSender(
 	bankK types.BankKeeper,
 	nexusK types.Nexus,
 	accountK types.AccountKeeper,
+	stakingK types.StakingKeeper,
 	routingCtx nexus.RoutingContext,
 	msg nexus.GeneralMessage,
 ) (sdk.Coin, error) {
 	switch msg.Type() {
 	case nexus.TypeGeneralMessage:
 		// pure general message, take dust amount from sender to satisfy ibc transfer requirements
-		asset := sdk.NewCoin(exported.NativeAsset, sdk.OneInt())
+		asset := sdk.NewCoin(stakingK.BondDenom(ctx), sdk.OneInt())
 		sender := routingCtx.Sender
 
 		if !routingCtx.FeeGranter.Empty() {

x/axelarnet/keeper/message_route_test.go

@@ -84,6 +84,7 @@ func TestNewMessageRoute(t *testing.T) {
 		bankK     *mock.BankKeeperMock
 		nexusK    *mock.NexusMock
 		accountK  *mock.AccountKeeperMock
+		stakingK  *mock.StakingKeeperMock
 	)
 
 	givenMessageRoute := Given("the message route", func() {
@@ -93,8 +94,12 @@ func TestNewMessageRoute(t *testing.T) {
 		bankK = &mock.BankKeeperMock{}
 		nexusK = &mock.NexusMock{}
 		accountK = &mock.AccountKeeperMock{}
+		stakingK = &mock.StakingKeeperMock{}
+		stakingK.BondDenomFunc = func(ctx sdk.Context) string {
+			return exported.NativeAsset
+		}
 
-		route = keeper.NewMessageRoute(k, ibcK, feegrantK, bankK, nexusK, accountK)
+		route = keeper.NewMessageRoute(k, ibcK, feegrantK, bankK, nexusK, accountK, stakingK)
 	})
 
 	givenMessageRoute.

x/axelarnet/types/expected_keepers.go

@@ -20,7 +20,7 @@ import (
 	nexus "github.com/axelarnetwork/axelar-core/x/nexus/exported"
 )
 
-//go:generate moq -out ./mock/expected_keepers.go -pkg mock . BaseKeeper Nexus BankKeeper IBCTransferKeeper ChannelKeeper AccountKeeper PortKeeper GovKeeper FeegrantKeeper IBCKeeper
+//go:generate moq -out ./mock/expected_keepers.go -pkg mock . BaseKeeper Nexus BankKeeper IBCTransferKeeper ChannelKeeper AccountKeeper PortKeeper GovKeeper StakingKeeper FeegrantKeeper IBCKeeper
 
 // BaseKeeper is implemented by this module's base keeper
 type BaseKeeper interface {
@@ -124,6 +124,11 @@ type GovKeeper interface {
 	GetProposal(ctx sdk.Context, proposalID uint64) (govtypes.Proposal, bool)
 }
 
+// StakingKeeper provides functionality to the staking module
+type StakingKeeper interface {
+	BondDenom(ctx sdk.Context) string
+}
+
 // FeegrantKeeper defines the expected feegrant keeper.
 type FeegrantKeeper interface {
 	UseGrantedFees(ctx sdk.Context, granter, grantee sdk.AccAddress, fee sdk.Coins, msgs []sdk.Msg) error