feat: add ethereum light client (#3586)

* feat: add ethereum light client

* rename to eth

* Fix import

---------

Co-authored-by: Eric Warehime <[email protected]>

app/upgrades/v23/constants.go

@@ -1,6 +1,8 @@
 package v23
 
 import (
+	_ "embed"
+
 	ibcwasmtypes "github.com/cosmos/ibc-go/modules/light-clients/08-wasm/v10/types"
 
 	"cosmossdk.io/store/types"
@@ -12,8 +14,13 @@ const (
 	// UpgradeName defines the on-chain upgrade name.
 	UpgradeName    = "v23"
 	IbcFeeStoreKey = "feeibc"
+
+	ExpectedEthLightClientChecksum = "f82549f5bc8adaef18e5ce4f5b68269947343742c938dac322faf1583319172c"
 )
 
+//go:embed cw_ics08_wasm_eth.wasm.gz
+var ethWasmLightClient []byte
+
 var Upgrade = upgrades.Upgrade{
 	UpgradeName:          UpgradeName,
 	CreateUpgradeHandler: CreateUpgradeHandler,

app/upgrades/v23/upgrades.go

@@ -2,7 +2,10 @@ package v23
 
 import (
 	"context"
+	"encoding/hex"
+	"fmt"
 
+	ibcwasmkeeper "github.com/cosmos/ibc-go/modules/light-clients/08-wasm/v10/keeper"
 	ibcwasmtypes "github.com/cosmos/ibc-go/modules/light-clients/08-wasm/v10/types"
 	ibctmtypes "github.com/cosmos/ibc-go/v10/modules/light-clients/07-tendermint"
 
@@ -31,11 +34,37 @@ func CreateUpgradeHandler(
 		}
 
 		// Set IBC Client AllowedClients
+		ctx.Logger().Info("Setting IBC Client AllowedClients")
 		params := keepers.IBCKeeper.ClientKeeper.GetParams(ctx)
 		params.AllowedClients = []string{ibctmtypes.ModuleName, ibcwasmtypes.ModuleName}
 		keepers.IBCKeeper.ClientKeeper.SetParams(ctx, params)
 
+		// Add Eth Light Wasm Light Client
+		ctx.Logger().Info("Adding Eth Light Wasm Light Client")
+		if err := AddEthLightWasmLightClient(ctx, keepers.WasmClientKeeper); err != nil {
+			ctx.Logger().Error("Error adding Eth Light Wasm Light Client", "message", err.Error())
+			return nil, err
+		}
+
 		ctx.Logger().Info("Upgrade v23 complete")
 		return vm, nil
 	}
 }
+
+func AddEthLightWasmLightClient(ctx context.Context, wasmKeeper ibcwasmkeeper.Keeper) error {
+	resp, err := wasmKeeper.StoreCode(ctx, &ibcwasmtypes.MsgStoreCode{
+		Signer:       wasmKeeper.GetAuthority(),
+		WasmByteCode: ethWasmLightClient,
+	})
+	if err != nil {
+		return errorsmod.Wrap(err, "failed to store eth wasm light client during upgrade")
+	}
+
+	actualChecksum := hex.EncodeToString(resp.Checksum)
+
+	if hex.EncodeToString(resp.Checksum) != ExpectedEthLightClientChecksum {
+		return fmt.Errorf("checksum mismatch: expected %s, got %s", ExpectedEthLightClientChecksum, actualChecksum)
+	}
+
+	return nil
+}

app/upgrades/v23/upgrades_test.go

@@ -0,0 +1,59 @@
+package v23_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
+
+	ibcwasmtypes "github.com/cosmos/ibc-go/modules/light-clients/08-wasm/v10/types"
+	clienttypes "github.com/cosmos/ibc-go/v10/modules/core/02-client/types"
+	ibcexported "github.com/cosmos/ibc-go/v10/modules/core/exported"
+
+	"github.com/cosmos/gaia/v23/app/helpers"
+	v23 "github.com/cosmos/gaia/v23/app/upgrades/v23"
+)
+
+const (
+	clientStateJSON    = `{"@type":"/ibc.lightclients.wasm.v1.ClientState","data":"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","checksum":"+CVJ9byK2u8Y5c5PW2gmmUc0N0LJONrDIvrxWDMZFyw=","latest_height":{"revision_number":"0","revision_height":"32"}}`
+	consensusStateJSON = `{"@type":"/ibc.lightclients.wasm.v1.ConsensusState","data":"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"}`
+)
+
+func TestAddEthLightWasmLightClient(t *testing.T) {
+	gaiaApp := helpers.Setup(t)
+	ctx := gaiaApp.NewUncachedContext(true, tmproto.Header{
+		Time: time.Unix(1740829624, 0),
+	})
+
+	err := v23.AddEthLightWasmLightClient(ctx, gaiaApp.WasmClientKeeper)
+	require.NoError(t, err)
+
+	// check that the checksum is as expected
+	queryChecksumsResp, err := gaiaApp.WasmClientKeeper.Checksums(ctx, &ibcwasmtypes.QueryChecksumsRequest{})
+	require.NoError(t, err)
+	require.Len(t, queryChecksumsResp.Checksums, 1)
+	require.Equal(t, v23.ExpectedEthLightClientChecksum, queryChecksumsResp.Checksums[0])
+
+	var clientState ibcexported.ClientState
+	err = gaiaApp.AppCodec().UnmarshalInterfaceJSON([]byte(clientStateJSON), &clientState)
+	require.NoError(t, err)
+
+	var consensusState ibcexported.ConsensusState
+	err = gaiaApp.AppCodec().UnmarshalInterfaceJSON([]byte(consensusStateJSON), &consensusState)
+	require.NoError(t, err)
+
+	createMsg, err := clienttypes.NewMsgCreateClient(clientState, consensusState, "")
+	require.NoError(t, err)
+
+	// create a light client
+	createClientResp, err := gaiaApp.IBCKeeper.CreateClient(ctx, createMsg)
+	require.NoError(t, err)
+	require.Equal(t, "08-wasm-0", createClientResp.ClientId)
+
+	// Make a call into the actual light client to verify we can call the light client contract
+	timestamp, err := gaiaApp.IBCKeeper.ClientKeeper.GetClientTimestampAtHeight(ctx, "08-wasm-0", clienttypes.NewHeight(0, 32))
+	require.NoError(t, err)
+	require.Equal(t, uint64(1740827599000000000), timestamp)
+}