fix: remove temp file on shutdown

anvil/anvil.go

@@ -9,6 +9,7 @@ import (
 	"math/big"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"sync/atomic"
@@ -93,6 +94,8 @@ func (a *Anvil) Start(ctx context.Context) error {
 
 	if len(a.cfg.GenesisJSON) > 0 && a.cfg.ForkConfig == nil {
 		tempFile, err := os.CreateTemp("", "genesis-*.json")
+		defer a.removeFile(tempFile)
+
 		if err != nil {
 			return fmt.Errorf("error creating temporary genesis file: %w", err)
 		}
@@ -120,10 +123,32 @@ func (a *Anvil) Start(ctx context.Context) error {
 	// and see what port anvil eventually binds to when started
 	anvilPortCh := make(chan uint64)
 
-	// Handle stdout/stderr
-	logFile, err := os.CreateTemp("", fmt.Sprintf("anvil-chain-%d-", a.cfg.ChainID))
-	if err != nil {
-		return fmt.Errorf("failed to create temp log file: %w", err)
+	var logFile *os.File
+
+	// Empty LogsDirectory defaults to temp file
+	if a.cfg.LogsDirectory == "" {
+		tempLogFile, err := os.CreateTemp("", fmt.Sprintf("anvil-chain-%d-", a.cfg.ChainID))
+		if err != nil {
+			return fmt.Errorf("failed to create temp log file: %w", err)
+		}
+
+		logFile = tempLogFile
+		// Clean up the temp log file
+		defer a.removeFile(logFile)
+	} else {
+		// Expand the path to the log file
+		absFilePath, err := filepath.Abs(fmt.Sprintf("%s/anvil-%d.log", a.cfg.LogsDirectory, a.cfg.ChainID))
+		if err != nil {
+			return fmt.Errorf("failed to expand path: %w", err)
+		}
+
+		// Handle logs in the specified directory
+		specifiedLogFile, err := os.Create(absFilePath)
+		if err != nil {
+			return fmt.Errorf("failed to create log file: %w", err)
+		}
+		logFile = specifiedLogFile
+		// Don't delete the log file if directory is specified
 	}
 
 	a.logFilePath = logFile.Name()
@@ -301,3 +326,9 @@ func (a *Anvil) SimulatedLogs(ctx context.Context, tx *types.Transaction) ([]typ
 
 	return logs, err
 }
+
+func (a *Anvil) removeFile(file *os.File) {
+	if err := os.Remove(file.Name()); err != nil {
+		a.log.Warn("failed to remove temp genesis file", "file.path", file.Name(), "err", err)
+	}
+}

config/chain.go

@@ -57,6 +57,9 @@ type ChainConfig struct {
 
 	// Optional
 	StartingTimestamp uint64
+
+	// Optional
+	LogsDirectory string
 }
 
 type NetworkConfig struct {
@@ -90,7 +93,7 @@ type Chain interface {
 	Stop(ctx context.Context) error
 }
 
-func GetDefaultNetworkConfig(startingTimestamp uint64) NetworkConfig {
+func GetDefaultNetworkConfig(startingTimestamp uint64, logsDirectory string) NetworkConfig {
 	return NetworkConfig{
 		// Enabled by default as it is included in genesis
 		InteropEnabled: true,
@@ -101,6 +104,7 @@ func GetDefaultNetworkConfig(startingTimestamp uint64) NetworkConfig {
 			SecretsConfig:     DefaultSecretsConfig,
 			GenesisJSON:       genesis.GeneratedGenesisDeployment.L1.GenesisJSON,
 			StartingTimestamp: startingTimestamp,
+			LogsDirectory:     logsDirectory,
 		},
 		L2Configs: []ChainConfig{
 			{
@@ -114,6 +118,7 @@ func GetDefaultNetworkConfig(startingTimestamp uint64) NetworkConfig {
 					DependencySet: []uint64{genesis.GeneratedGenesisDeployment.L2s[1].ChainID},
 				},
 				StartingTimestamp: startingTimestamp,
+				LogsDirectory:     logsDirectory,
 			},
 			{
 				Name:          "OPChainB",
@@ -126,6 +131,7 @@ func GetDefaultNetworkConfig(startingTimestamp uint64) NetworkConfig {
 					DependencySet: []uint64{genesis.GeneratedGenesisDeployment.L2s[0].ChainID},
 				},
 				StartingTimestamp: startingTimestamp,
+				LogsDirectory:     logsDirectory,
 			},
 		},
 	}

config/cli.go

@@ -21,6 +21,8 @@ const (
 	NetworkFlagName        = "network"
 	L2StartingPortFlagName = "l2.starting.port"
 
+	LogsDirectoryFlagName = "logs.directory"
+
 	InteropEnabledFlagName   = "interop.enabled"
 	InteropAutoRelayFlagName = "interop.autorelay"
 )
@@ -43,7 +45,13 @@ func BaseCLIFlags(envPrefix string) []cli.Flag {
 			Name:    InteropAutoRelayFlagName,
 			Value:   false,
 			Usage:   "Automatically relay messages sent to the L2ToL2CrossDomainMessenger using account 0xa0Ee7A142d267C1f36714E4a8F75612F20a79720",
-			EnvVars: opservice.PrefixEnvVar(envPrefix, "AUTORELAY"),
+			EnvVars: opservice.PrefixEnvVar(envPrefix, "INTEROP_AUTORELAY"),
+		},
+		&cli.StringFlag{
+			Name:    LogsDirectoryFlagName,
+			Usage:   "Directory to store logs",
+			Value:   "",
+			EnvVars: opservice.PrefixEnvVar(envPrefix, "LOGS_DIRECTORY"),
 		},
 	}
 }
@@ -93,6 +101,8 @@ type CLIConfig struct {
 
 	InteropAutoRelay bool
 
+	LogsDirectory string
+
 	ForkConfig *ForkCLIConfig
 }
 
@@ -102,6 +112,8 @@ func ReadCLIConfig(ctx *cli.Context) (*CLIConfig, error) {
 		L2StartingPort: ctx.Uint64(L2StartingPortFlagName),
 
 		InteropAutoRelay: ctx.Bool(InteropAutoRelayFlagName),
+
+		LogsDirectory: ctx.String(LogsDirectoryFlagName),
 	}
 
 	if ctx.Command.Name == ForkCommandName {

orchestrator/orchestrator_test.go

@@ -21,7 +21,7 @@ type TestSuite struct {
 }
 
 func createTestSuite(t *testing.T) *TestSuite {
-	networkConfig := config.GetDefaultNetworkConfig(uint64(time.Now().Unix()))
+	networkConfig := config.GetDefaultNetworkConfig(uint64(time.Now().Unix()), "")
 	testlog := testlog.Logger(t, log.LevelInfo)
 
 	ctx, closeApp := context.WithCancelCause(context.Background())

supersim.go

@@ -24,7 +24,7 @@ type Supersim struct {
 }
 
 func NewSupersim(log log.Logger, envPrefix string, closeApp context.CancelCauseFunc, cliConfig *config.CLIConfig) (*Supersim, error) {
-	networkConfig := config.GetDefaultNetworkConfig(uint64(time.Now().Unix()))
+	networkConfig := config.GetDefaultNetworkConfig(uint64(time.Now().Unix()), cliConfig.LogsDirectory)
 
 	// If Forking, override the network config with the generated fork config
 	if cliConfig.ForkConfig != nil {