Add a command to inspect sync state progress

cli/cmd.go

@@ -119,6 +119,7 @@ var Commands = []*cli.Command{
 	paychCmd,
 	sendCmd,
 	stateCmd,
+	syncCmd,
 	versionCmd,
 	walletCmd,
 }

cli/sync.go

@@ -0,0 +1,50 @@
+package cli
+
+import (
+	"fmt"
+
+	"gopkg.in/urfave/cli.v2"
+
+	"github.com/filecoin-project/go-lotus/chain"
+	cid "github.com/ipfs/go-cid"
+)
+
+var syncCmd = &cli.Command{
+	Name:  "sync",
+	Usage: "Inspect or interact with the chain syncer",
+	Subcommands: []*cli.Command{
+		syncStatusCmd,
+	},
+}
+
+var syncStatusCmd = &cli.Command{
+	Name:  "status",
+	Usage: "check sync status",
+	Action: func(cctx *cli.Context) error {
+		api, err := GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+		ctx := ReqContext(cctx)
+
+		ss, err := api.SyncState(ctx)
+		if err != nil {
+			return err
+		}
+
+		var base, target []cid.Cid
+		if ss.Base != nil {
+			base = ss.Base.Cids()
+		}
+		if ss.Target != nil {
+			target = ss.Target.Cids()
+		}
+
+		fmt.Println("sync status:")
+		fmt.Printf("Base:\t%s\n", base)
+		fmt.Printf("Target:\t%s\n", target)
+		fmt.Printf("Stage: %s\n", chain.SyncStageString(ss.Stage))
+		fmt.Printf("Height: %d\n", ss.Height)
+		return nil
+	},
+}