fix(op-bootnode): add missed flags and enable metrics server (#7282)

op-bootnode/bootnode/entrypoint.go

@@ -18,6 +18,7 @@ import (
 	"github.com/ethereum-optimism/optimism/op-node/rollup"
 	"github.com/ethereum-optimism/optimism/op-service/eth"
 	oplog "github.com/ethereum-optimism/optimism/op-service/log"
+	opmetrics "github.com/ethereum-optimism/optimism/op-service/metrics"
 	"github.com/ethereum-optimism/optimism/op-service/opio"
 )
 
@@ -69,6 +70,17 @@ func Main(cliCtx *cli.Context) error {
 
 	go p2pNode.DiscoveryProcess(ctx, logger, config, p2pConfig.TargetPeers())
 
+	metricsCfg := opmetrics.ReadCLIConfig(cliCtx)
+	if metricsCfg.Enabled {
+		log.Info("starting metrics server", "addr", metricsCfg.ListenAddr, "port", metricsCfg.ListenPort)
+		go func() {
+			if err := m.Serve(ctx, metricsCfg.ListenAddr, metricsCfg.ListenPort); err != nil {
+				log.Error("error starting metrics server", err)
+			}
+		}()
+		m.RecordUp()
+	}
+
 	opio.BlockOnInterrupts()
 
 	return nil

op-bootnode/flags/flags.go

@@ -8,6 +8,7 @@ import (
 	"github.com/ethereum-optimism/optimism/op-node/flags"
 	opservice "github.com/ethereum-optimism/optimism/op-service"
 	oplog "github.com/ethereum-optimism/optimism/op-service/log"
+	opmetrics "github.com/ethereum-optimism/optimism/op-service/metrics"
 	"github.com/urfave/cli/v2"
 )
 
@@ -36,5 +37,7 @@ var Flags = []cli.Flag{
 }
 
 func init() {
+	Flags = append(Flags, flags.P2pFlags...)
+	Flags = append(Flags, opmetrics.CLIFlags(envVarPrefix)...)
 	Flags = append(Flags, oplog.CLIFlags(envVarPrefix)...)
 }

op-node/flags/flags.go

@@ -306,7 +306,7 @@ var optionalFlags = []cli.Flag{
 var Flags []cli.Flag
 
 func init() {
-	optionalFlags = append(optionalFlags, p2pFlags...)
+	optionalFlags = append(optionalFlags, P2pFlags...)
 	optionalFlags = append(optionalFlags, oplog.CLIFlags(EnvVarPrefix)...)
 	Flags = append(requiredFlags, optionalFlags...)
 }

op-node/flags/p2p_flags.go

@@ -308,7 +308,7 @@ var (
 
 // None of these flags are strictly required.
 // Some are hidden if they are too technical, or not recommended.
-var p2pFlags = []cli.Flag{
+var P2pFlags = []cli.Flag{
 	DisableP2P,
 	NoDiscovery,
 	P2PPrivPath,