Fixed `BlockchainLogger` tracer not being correctly set up up to `Blockchain` object (#17)

cmd/geth/config.go

@@ -36,6 +36,7 @@ import (
 	ethcatalyst "github.com/ethereum/go-ethereum/eth/catalyst"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
+	"github.com/ethereum/go-ethereum/eth/tracers/directory"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/internal/flags"
 	"github.com/ethereum/go-ethereum/internal/version"
@@ -176,6 +177,18 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 		v := ctx.Uint64(utils.OverrideVerkle.Name)
 		cfg.Eth.OverrideVerkle = &v
 	}
+
+	if ctx.IsSet(utils.VMTraceFlag.Name) {
+		if name := ctx.String(utils.VMTraceFlag.Name); name != "" {
+			t, err := directory.LiveDirectory.New(name)
+			if err != nil {
+				utils.Fatalf("Failed to create tracer %q: %v", name, err)
+			}
+
+			cfg.Eth.VMTracer = t
+		}
+	}
+
 	backend, eth := utils.RegisterEthService(stack, &cfg.Eth)
 
 	// Configure log filter RPC API.

eth/backend.go

@@ -182,6 +182,7 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	var (
 		vmConfig = vm.Config{
 			EnablePreimageRecording: config.EnablePreimageRecording,
+			Tracer:                  config.VMTracer,
 		}
 		cacheConfig = &core.CacheConfig{
 			TrieCleanLimit:      config.TrieCleanCache,

eth/ethconfig/config.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/txpool/blobpool"
 	"github.com/ethereum/go-ethereum/core/txpool/legacypool"
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/gasprice"
 	"github.com/ethereum/go-ethereum/ethdb"
@@ -140,6 +141,9 @@ type Config struct {
 	// Enables tracking of SHA3 preimages in the VM
 	EnablePreimageRecording bool
 
+	// Enables VM tracing
+	VMTracer vm.EVMLogger
+
 	// Miscellaneous options
 	DocRoot string `toml:"-"`