chore: add tracer in app.go

app/app.go

@@ -136,6 +136,7 @@ import (
 	"github.com/evmos/ethermint/x/evm"
 	evmkeeper "github.com/evmos/ethermint/x/evm/keeper"
 	v0evmtypes "github.com/evmos/ethermint/x/evm/migrations/v0/types"
+	evmtracing "github.com/evmos/ethermint/x/evm/tracing"
 	evmtypes "github.com/evmos/ethermint/x/evm/types"
 	"github.com/evmos/ethermint/x/feemarket"
 	feemarketkeeper "github.com/evmos/ethermint/x/feemarket/keeper"
@@ -148,6 +149,7 @@ import (
 	// Force-load the tracer engines to trigger registration due to Go-Ethereum v1.10.15 changes
 	_ "github.com/ethereum/go-ethereum/eth/tracers/js"
 	_ "github.com/ethereum/go-ethereum/eth/tracers/native"
+	ethparams "github.com/ethereum/go-ethereum/params"
 )
 
 func init() {
@@ -248,6 +250,8 @@ type EthermintApp struct {
 
 	// the configurator
 	configurator module.Configurator
+
+	evmTracer *evmtracing.Hooks
 }
 
 // NewEthermintApp returns a reference to a new initialized Ethermint application.
@@ -794,6 +798,27 @@ func NewEthermintApp(
 	app.ScopedIBCKeeper = scopedIBCKeeper
 	app.ScopedTransferKeeper = scopedTransferKeeper
 
+	tracer := cast.ToString(appOpts.Get(srvflags.EVMTracer))
+
+	// Currently only the firehose live tracer is supported
+	if tracer == "firehose" {
+		liveTracer, err := evmtypes.NewFirehoseCosmosLiveTracer()
+		if err != nil {
+			panic(err)
+		}
+		app.EvmKeeper.SetTracer(liveTracer)
+		app.evmTracer = liveTracer
+	} else if tracer == "access_list" {
+		panic("access_list tracer is not supported")
+	} else if tracer != "" {
+		liveTracer := evmtypes.NewTracer(tracer, nil, ethparams.Rules{})
+		t := &evmtracing.Hooks{
+			Hooks: liveTracer.Hooks,
+		}
+		app.EvmKeeper.SetTracer(t)
+		app.evmTracer = t
+	}
+
 	return app
 }
 
@@ -851,11 +876,26 @@ func (app *EthermintApp) PreBlocker(ctx sdk.Context, _ *abci.RequestFinalizeBloc
 
 // BeginBlocker updates every begin block
 func (app *EthermintApp) BeginBlocker(ctx sdk.Context) (sdk.BeginBlock, error) {
+	if app.evmTracer != nil {
+		ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
+	}
+
+	// Cosmos chains will only call InitChainer when the chain either starts
+	// from genesis or is being upgraded and a full state initialization is needed
+	if app.EvmKeeper != nil && app.EvmKeeper.ChainID() == nil {
+		app.EvmKeeper.WithChainID(ctx)
+		app.EvmKeeper.InitChainer(ctx)
+	}
+
 	return app.ModuleManager.BeginBlock(ctx)
 }
 
 // EndBlocker updates every end block
 func (app *EthermintApp) EndBlocker(ctx sdk.Context) (sdk.EndBlock, error) {
+	if app.evmTracer != nil {
+		ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
+	}
+
 	return app.ModuleManager.EndBlock(ctx)
 }
 
@@ -872,6 +912,16 @@ func (app *EthermintApp) InitChainer(ctx sdk.Context, req *abci.RequestInitChain
 	if err := app.UpgradeKeeper.SetModuleVersionMap(ctx, app.ModuleManager.GetVersionMap()); err != nil {
 		return nil, err
 	}
+
+	if app.evmTracer != nil {
+		ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
+	}
+
+	if app.EvmKeeper != nil {
+		app.EvmKeeper.WithChainID(ctx)
+		app.EvmKeeper.InitChainer(ctx)
+	}
+
 	return app.ModuleManager.InitGenesis(ctx, app.appCodec, genesisState)
 }
 

server/start.go

@@ -219,8 +219,8 @@ which accepts a path for the resulting pprof file.
 	cmd.Flags().Bool(srvflags.JSONRPCAllowIndexerGap, true, "Allow block gap for the custom tx indexer for json-rpc")
 	cmd.Flags().Bool(srvflags.JSONRPCEnableMetrics, false, "Define if EVM rpc metrics server should be enabled")
 
-	cmd.Flags().String(srvflags.EVMTracer, config.DefaultEVMTracer, "the EVM tracer type to collect execution traces from the EVM transaction execution (json|struct|access_list|markdown)") //nolint:lll
-	cmd.Flags().Uint64(srvflags.EVMMaxTxGasWanted, config.DefaultMaxTxGasWanted, "the gas wanted for each eth tx returned in ante handler in check tx mode")                                 //nolint:lll
+	cmd.Flags().String(srvflags.EVMTracer, config.DefaultEVMTracer, "the EVM tracer type to collect execution traces from the EVM transaction execution (json|struct|access_list|markdown|firestore)") //nolint:lll
+	cmd.Flags().Uint64(srvflags.EVMMaxTxGasWanted, config.DefaultMaxTxGasWanted, "the gas wanted for each eth tx returned in ante handler in check tx mode")                                           //nolint:lll
 
 	cmd.Flags().String(srvflags.TLSCertPath, "", "the cert.pem file path for the server TLS configuration")
 	cmd.Flags().String(srvflags.TLSKeyPath, "", "the key.pem file path for the server TLS configuration")