[#81] cmd/neofs-cli: Implement "nodeinfo" sub-cmd of "netmap" cmd

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-cli/modules/netmap.go

@@ -1,12 +1,20 @@
 package cmd
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 
+	"github.com/mr-tron/base58"
+	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
 	"github.com/spf13/cobra"
 )
 
+var (
+	nodeInfoJSON bool
+)
+
 // netmapCmd represents the netmap command
 var netmapCmd = &cobra.Command{
 	Use:   "netmap",
@@ -22,7 +30,10 @@ func init() {
 
 	netmapCmd.AddCommand(
 		getEpochCmd,
+		localNodeInfoCmd,
 	)
+
+	localNodeInfoCmd.Flags().BoolVar(&nodeInfoJSON, "json", false, "print node info in JSON format")
 }
 
 var getEpochCmd = &cobra.Command{
@@ -45,3 +56,51 @@ var getEpochCmd = &cobra.Command{
 		return nil
 	},
 }
+
+var localNodeInfoCmd = &cobra.Command{
+	Use:   "nodeinfo",
+	Short: "Get local node info",
+	Long:  `Get local node info`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		cli, err := getSDKClient()
+		if err != nil {
+			return err
+		}
+
+		nodeInfo, err := cli.EndpointInfo(context.Background())
+		if err != nil {
+			return fmt.Errorf("rpc error: %w", err)
+		}
+
+		prettyPrintNodeInfo(nodeInfo, nodeInfoJSON)
+
+		return nil
+	},
+}
+
+func prettyPrintNodeInfo(i *netmap.NodeInfo, jsonEncoding bool) {
+	if jsonEncoding {
+		data, err := netmap.NodeInfoToJSON(i)
+		if err != nil {
+			printVerbose("Can't convert container to json: %w", err)
+			return
+		}
+
+		buf := new(bytes.Buffer)
+		if err := json.Indent(buf, data, "", "  "); err != nil {
+			printVerbose("Can't pretty print json: %w", err)
+		}
+
+		fmt.Println(buf)
+
+		return
+	}
+
+	fmt.Println("key:", base58.Encode(i.PublicKey()))
+	fmt.Println("address:", i.Address())
+	fmt.Println("state:", i.State())
+
+	for _, attribute := range i.Attributes() {
+		fmt.Printf("attribute: %s=%s\n", attribute.Key(), attribute.Value())
+	}
+}