cmd/geth: enable metrics for geth import command (#20738)

* cmd/geth: enable metrics for geth import command

* cmd/geth: enable metrics-flags for import command

cmd/geth/chaincmd.go

@@ -36,6 +36,7 @@ import (
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/trie"
 	"gopkg.in/urfave/cli.v1"
 )
@@ -82,6 +83,14 @@ The dumpgenesis command dumps the genesis block configuration in JSON format to
 			utils.SnapshotFlag,
 			utils.CacheDatabaseFlag,
 			utils.CacheGCFlag,
+			utils.MetricsEnabledFlag,
+			utils.MetricsEnabledExpensiveFlag,
+			utils.MetricsEnableInfluxDBFlag,
+			utils.MetricsInfluxDBEndpointFlag,
+			utils.MetricsInfluxDBDatabaseFlag,
+			utils.MetricsInfluxDBUsernameFlag,
+			utils.MetricsInfluxDBPasswordFlag,
+			utils.MetricsInfluxDBTagsFlag,
 		},
 		Category: "BLOCKCHAIN COMMANDS",
 		Description: `
@@ -255,6 +264,10 @@ func importChain(ctx *cli.Context) error {
 	if len(ctx.Args()) < 1 {
 		utils.Fatalf("This command requires an argument.")
 	}
+	// Start metrics export if enabled
+	utils.SetupMetrics(ctx)
+	// Start system runtime metrics collection
+	go metrics.CollectProcessMetrics(3 * time.Second)
 	stack := makeFullNode(ctx)
 	defer stack.Close()