Emit eth tx hash in ante handler to support query failed transactions

CHANGELOG.md

@@ -41,6 +41,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### API Breaking
 
 - (rpc) [tharsis#1081](https://github.com/tharsis/ethermint/pull/1081) Deduplicate some json-rpc logic codes, cleanup several dead functions.
+- (ante) [tharsis#1062](https://github.com/tharsis/ethermint/pull/1062) Emit event of eth tx hash in ante handler to support query failed transactions.
 
 ### Improvements
 

app/ante/eth.go

@@ -3,6 +3,7 @@ package ante
 import (
 	"errors"
 	"math/big"
+	"strconv"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@@ -539,3 +540,36 @@ func (mfd EthMempoolFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulat
 
 	return next(ctx, tx, simulate)
 }
+
+// EthEmitEventDecorator emit events in ante handler in case of tx execution failed (out of block gas limit).
+type EthEmitEventDecorator struct {
+	evmKeeper EVMKeeper
+}
+
+// NewEthEmitEventDecorator creates a new EthEmitEventDecorator
+func NewEthEmitEventDecorator(evmKeeper EVMKeeper) EthEmitEventDecorator {
+	return EthEmitEventDecorator{evmKeeper}
+}
+
+// AnteHandle emits some basic events for the eth messages
+func (eeed EthEmitEventDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
+	// After eth tx passed ante handler, the fee is deducted and nonce increased, it shouldn't be ignored by json-rpc,
+	// we need to emit some basic events at the very end of ante handler to be indexed by tendermint.
+	txIndex := eeed.evmKeeper.GetTxIndexTransient(ctx)
+	for i, msg := range tx.GetMsgs() {
+		msgEthTx, ok := msg.(*evmtypes.MsgEthereumTx)
+		if !ok {
+			return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid message type %T, expected %T", msg, (*evmtypes.MsgEthereumTx)(nil))
+		}
+
+		// emit ethereum tx hash as event, should be indexed by tm tx indexer for query purpose.
+		// it's emitted in ante handler so we can query failed transaction (out of block gas limit).
+		ctx.EventManager().EmitEvent(sdk.NewEvent(
+			evmtypes.EventTypeEthereumTx,
+			sdk.NewAttribute(evmtypes.AttributeKeyEthereumTxHash, msgEthTx.Hash),
+			sdk.NewAttribute(evmtypes.AttributeKeyTxIndex, strconv.FormatUint(txIndex+uint64(i), 10)),
+		))
+	}
+
+	return next(ctx, tx, simulate)
+}

app/ante/handler_options.go

@@ -57,6 +57,7 @@ func newEthAnteHandler(options HandlerOptions) sdk.AnteHandler {
 		NewEthGasConsumeDecorator(options.EvmKeeper, options.MaxTxGasWanted),
 		NewCanTransferDecorator(options.EvmKeeper),
 		NewEthIncrementSenderSequenceDecorator(options.AccountKeeper), // innermost AnteDecorator.
+		NewEthEmitEventDecorator(options.EvmKeeper),                   // emit eth tx hash and index at the very last ante handler.
 	)
 }
 

app/ante/interfaces.go

@@ -26,6 +26,7 @@ type EVMKeeper interface {
 	GetBaseFee(ctx sdk.Context, ethCfg *params.ChainConfig) *big.Int
 	GetBalance(ctx sdk.Context, addr common.Address) *big.Int
 	ResetTransientGasUsed(ctx sdk.Context)
+	GetTxIndexTransient(ctx sdk.Context) uint64
 }
 
 type protoTxProvider interface {

go.mod

@@ -5,7 +5,7 @@ go 1.17
 require (
 	github.com/btcsuite/btcd v0.22.1
 	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
-	github.com/cosmos/cosmos-sdk v0.45.4
+	github.com/cosmos/cosmos-sdk v0.45.5-0.20220523154235-2921a1c3c918
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/ibc-go/v3 v3.0.0
 	github.com/davecgh/go-spew v1.1.1
@@ -158,5 +158,3 @@ replace (
 	github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
 	google.golang.org/grpc => google.golang.org/grpc v1.33.2
 )
-
-replace github.com/cosmos/cosmos-sdk => github.com/crypto-org-chain/cosmos-sdk v0.44.4-0.20220518050709-bd4ca739c699

go.sum

@@ -169,6 +169,7 @@ github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQ
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@@ -253,6 +254,9 @@ github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfc
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+github.com/cosmos/cosmos-sdk v0.45.5-0.20220523154235-2921a1c3c918/go.mod h1:WOqtDxN3eCCmnYLVla10xG7lEXkFjpTaqm2a2WasgCc=
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@@ -274,8 +278,6 @@ github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsr
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@@ -912,6 +914,7 @@ github.com/paulbellamy/ratecounter v0.2.0/go.mod h1:Hfx1hDpSGoqxkVVpBi/IlYD7kChl
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@@ -1052,13 +1056,15 @@ github.com/spf13/afero v1.6.0/go.mod h1:Ai8FlHk4v/PARR026UzYexafAt9roJ7LcLMAmO6Z
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@@ -1073,6 +1079,7 @@ github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DM
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@@ -1115,6 +1122,7 @@ github.com/tendermint/crypto v0.0.0-20191022145703-50d29ede1e15/go.mod h1:z4YtwM
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+gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.66.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.66.4 h1:SsAcf+mM7mRZo2nJNGt8mZCjG8ZRaNGMURJw7BsIST4=
 gopkg.in/ini.v1 v1.66.4/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=

rpc/backend/evm_backend.go

@@ -293,8 +293,8 @@ func (b *Backend) EthBlockFromTendermint(
 
 	for _, txsResult := range resBlockResult.TxsResults {
 		// workaround for cosmos-sdk bug. https://github.com/cosmos/cosmos-sdk/issues/10832
-		if txsResult.GetCode() == 11 && txsResult.GetLog() == "no block gas left to run tx: out of gas" {
-			// block gas limit has exceeded, other txs must have failed for the same reason.
+		if ShouldIgnoreGasUsed(txsResult) {
+			// block gas limit has exceeded, other txs must have failed with same reason.
 			break
 		}
 		gasUsed += uint64(txsResult.GetGasUsed())
@@ -454,6 +454,7 @@ func (b *Backend) GetCoinbase() (sdk.AccAddress, error) {
 func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransaction, error) {
 	res, err := b.GetTxByEthHash(txHash)
 	hexTx := txHash.Hex()
+
 	if err != nil {
 		// try to find tx in mempool
 		txs, err := b.PendingTransactions()
@@ -488,12 +489,17 @@ func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransactio
 		return nil, nil
 	}
 
-	if res.TxResult.Code != 0 {
+	if !TxSuccessOrExceedsBlockGasLimit(&res.TxResult) {
 		return nil, errors.New("invalid ethereum tx")
 	}
 
-	msgIndex, attrs := types.FindTxAttributes(res.TxResult.Events, hexTx)
-	if msgIndex < 0 {
+	parsedTxs, err := types.ParseTxResult(&res.TxResult)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse tx events: %s", hexTx)
+	}
+
+	parsedTx := parsedTxs.GetTxByHash(txHash)
+	if parsedTx == nil {
 		return nil, fmt.Errorf("ethereum tx not found in msgs: %s", hexTx)
 	}
 
@@ -503,7 +509,7 @@ func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransactio
 	}
 
 	// the `msgIndex` is inferred from tx events, should be within the bound.
-	msg, ok := tx.GetMsgs()[msgIndex].(*evmtypes.MsgEthereumTx)
+	msg, ok := tx.GetMsgs()[parsedTx.MsgIndex].(*evmtypes.MsgEthereumTx)
 	if !ok {
 		return nil, errors.New("invalid ethereum tx")
 	}
@@ -514,12 +520,7 @@ func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransactio
 		return nil, err
 	}
 
-	// Try to find txIndex from events
-	found := false
-	txIndex, err := types.GetUint64Attribute(attrs, evmtypes.AttributeKeyTxIndex)
-	if err == nil {
-		found = true
-	} else {
+	if parsedTx.EthTxIndex == -1 {
 		// Fallback to find tx index by iterating all valid eth transactions
 		blockRes, err := b.clientCtx.Client.BlockResults(b.ctx, &block.Block.Height)
 		if err != nil {
@@ -528,13 +529,12 @@ func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransactio
 		msgs := b.GetEthereumMsgsFromTendermintBlock(block, blockRes)
 		for i := range msgs {
 			if msgs[i].Hash == hexTx {
-				txIndex = uint64(i)
-				found = true
+				parsedTx.EthTxIndex = int64(i)
 				break
 			}
 		}
 	}
-	if !found {
+	if parsedTx.EthTxIndex == -1 {
 		return nil, errors.New("can't find index of ethereum tx")
 	}
 
@@ -547,7 +547,7 @@ func (b *Backend) GetTransactionByHash(txHash common.Hash) (*types.RPCTransactio
 		msg,
 		common.BytesToHash(block.BlockID.Hash.Bytes()),
 		uint64(res.Height),
-		txIndex,
+		uint64(parsedTx.EthTxIndex),
 		baseFee,
 	)
 }
@@ -915,21 +915,23 @@ func (b *Backend) FeeHistory(
 
 // GetEthereumMsgsFromTendermintBlock returns all real MsgEthereumTxs from a Tendermint block.
 // It also ensures consistency over the correct txs indexes across RPC endpoints
-func (b *Backend) GetEthereumMsgsFromTendermintBlock(block *tmrpctypes.ResultBlock, blockRes *tmrpctypes.ResultBlockResults) []*evmtypes.MsgEthereumTx {
+func (b *Backend) GetEthereumMsgsFromTendermintBlock(resBlock *tmrpctypes.ResultBlock, blockRes *tmrpctypes.ResultBlockResults) []*evmtypes.MsgEthereumTx {
 	var result []*evmtypes.MsgEthereumTx
+	block := resBlock.Block
 
 	txResults := blockRes.TxsResults
 
-	for i, tx := range block.Block.Txs {
+	for i, tx := range block.Txs {
 		// check tx exists on EVM by cross checking with blockResults
-		if txResults[i].Code != 0 {
+		// include the tx that exceeds block gas limit
+		if !TxSuccessOrExceedsBlockGasLimit(txResults[i]) {
 			b.logger.Debug("invalid tx result code", "cosmos-hash", hexutil.Encode(tx.Hash()))
 			continue
 		}
 
 		tx, err := b.clientCtx.TxConfig.TxDecoder()(tx)
 		if err != nil {
-			b.logger.Debug("failed to decode transaction in block", "height", block.Block.Height, "error", err.Error())
+			b.logger.Debug("failed to decode transaction in block", "height", block.Height, "error", err.Error())
 			continue
 		}
 

rpc/backend/utils.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"math/big"
 	"sort"
+	"strings"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
@@ -23,6 +24,10 @@ import (
 	evmtypes "github.com/tharsis/ethermint/x/evm/types"
 )
 
+// ExceedBlockGasLimitError defines the error message when tx execution exceeds the block gas limit.
+// The tx fee is deducted in ante handler, so it shouldn't be ignored in JSON-RPC API.
+const ExceedBlockGasLimitError = "out of gas in location: block gas meter; gasWanted:"
+
 type txGasAndReward struct {
 	gasUsed uint64
 	reward  *big.Int
@@ -369,3 +374,19 @@ func ParseTxLogsFromEvent(event abci.Event) ([]*ethtypes.Log, error) {
 	}
 	return evmtypes.LogsToEthereum(logs), nil
 }
+
+// TxExceedBlockGasLimit returns true if the tx exceeds block gas limit.
+func TxExceedBlockGasLimit(res *abci.ResponseDeliverTx) bool {
+	return strings.Contains(res.Log, ExceedBlockGasLimitError)
+}
+
+// TxSuccessOrExceedsBlockGasLimit returns if the tx should be included in json-rpc responses
+func TxSuccessOrExceedsBlockGasLimit(res *abci.ResponseDeliverTx) bool {
+	return res.Code == 0 || TxExceedBlockGasLimit(res)
+}
+
+// ShouldIgnoreGasUsed returns true if the gasUsed in result should be ignored
+// workaround for issue: https://github.com/cosmos/cosmos-sdk/issues/10832
+func ShouldIgnoreGasUsed(res *abci.ResponseDeliverTx) bool {
+	return res.GetCode() == 11 && strings.Contains(res.GetLog(), "no block gas left to run tx: out of gas")
+}