op-node: log error when op-node is configured with conflicting network and rollup-config file

op-bootnode/bootnode/entrypoint.go

@@ -44,7 +44,7 @@ func Main(cliCtx *cli.Context) error {
 	m := metrics.NewMetrics("default")
 	ctx := context.Background()
 
-	config, err := opnode.NewRollupConfig(cliCtx)
+	config, err := opnode.NewRollupConfig(logger, cliCtx)
 	if err != nil {
 		return err
 	}

op-node/service.go

@@ -30,7 +30,7 @@ func NewConfig(ctx *cli.Context, log log.Logger) (*node.Config, error) {
 		return nil, err
 	}
 
-	rollupConfig, err := NewRollupConfig(ctx)
+	rollupConfig, err := NewRollupConfig(log, ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -168,9 +168,16 @@ func NewDriverConfig(ctx *cli.Context) *driver.Config {
 	}
 }
 
-func NewRollupConfig(ctx *cli.Context) (*rollup.Config, error) {
+func NewRollupConfig(log log.Logger, ctx *cli.Context) (*rollup.Config, error) {
 	network := ctx.String(flags.Network.Name)
+	rollupConfigPath := ctx.String(flags.RollupConfig.Name)
 	if network != "" {
+		if rollupConfigPath != "" {
+			log.Error(`Cannot configure network and rollup-config at the same time.
+Startup will proceed to use the network-parameter and ignore the rollup config.
+Conflicting configuration is deprecated, and will stop the op-node from starting in the future.
+`, "network", network, "rollup_config", rollupConfigPath)
+		}
 		config, err := chaincfg.GetRollupConfig(network)
 		if err != nil {
 			return nil, err
@@ -179,7 +186,6 @@ func NewRollupConfig(ctx *cli.Context) (*rollup.Config, error) {
 		return &config, nil
 	}
 
-	rollupConfigPath := ctx.String(flags.RollupConfig.Name)
 	file, err := os.Open(rollupConfigPath)
 	if err != nil {
 		return nil, fmt.Errorf("failed to read rollup config: %w", err)

op-program/host/cmd/main.go

@@ -63,7 +63,7 @@ func run(args []string, action ConfigAction) error {
 		}
 		logger.Info("Starting fault proof program", "version", VersionWithMeta)
 
-		cfg, err := config.NewConfigFromCLI(ctx)
+		cfg, err := config.NewConfigFromCLI(logger, ctx)
 		if err != nil {
 			return err
 		}

op-program/host/config/config.go

@@ -12,6 +12,7 @@ import (
 	"github.com/ethereum-optimism/optimism/op-program/host/flags"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/urfave/cli/v2"
 )
@@ -110,11 +111,11 @@ func NewConfig(rollupCfg *rollup.Config, l2Genesis *params.ChainConfig, l1Head c
 	}
 }
 
-func NewConfigFromCLI(ctx *cli.Context) (*Config, error) {
+func NewConfigFromCLI(log log.Logger, ctx *cli.Context) (*Config, error) {
 	if err := flags.CheckRequired(ctx); err != nil {
 		return nil, err
 	}
-	rollupCfg, err := opnode.NewRollupConfig(ctx)
+	rollupCfg, err := opnode.NewRollupConfig(log, ctx)
 	if err != nil {
 		return nil, err
 	}