github.com/iotexproject/iotex-core@v1.14.1-rc1/ioctl/newcmd/bc/bcinfo.go (about)

     1  // Copyright (c) 2022 IoTeX
     2  // This source code is provided 'as is' and no warranties are given as to title or non-infringement, merchantability
     3  // or fitness for purpose and, to the extent permitted by law, all liability for your use of the code is disclaimed.
     4  // This source code is governed by Apache License 2.0 that can be found in the LICENSE file.
     5  
     6  package bc
     7  
     8  import (
     9  	"encoding/json"
    10  	"fmt"
    11  	"log"
    12  
    13  	"github.com/iotexproject/iotex-proto/golang/iotextypes"
    14  	"github.com/spf13/cobra"
    15  
    16  	"github.com/iotexproject/iotex-core/ioctl"
    17  	"github.com/iotexproject/iotex-core/ioctl/config"
    18  )
    19  
    20  // Multi-language support
    21  var (
    22  	_bcInfoCmdShorts = map[config.Language]string{
    23  		config.English: "Get current block chain information",
    24  		config.Chinese: "获取当前区块链信息",
    25  	}
    26  )
    27  
    28  type infoMessage struct {
    29  	Node string                `json:"node"`
    30  	Info *iotextypes.ChainMeta `json:"info"`
    31  }
    32  
    33  // NewBCInfoCmd represents the bc info command
    34  func NewBCInfoCmd(client ioctl.Client) *cobra.Command {
    35  	bcInfoCmdShort, _ := client.SelectTranslation(_bcInfoCmdShorts)
    36  	return &cobra.Command{
    37  		Use:   "info",
    38  		Short: bcInfoCmdShort,
    39  		Args:  cobra.ExactArgs(0),
    40  		RunE: func(cmd *cobra.Command, args []string) error {
    41  			cmd.SilenceUsage = true
    42  			chainMeta, err := GetChainMeta(client)
    43  			if err != nil {
    44  				return err
    45  			}
    46  
    47  			message := infoMessage{Node: client.Config().Endpoint, Info: chainMeta}
    48  			cmd.Println(fmt.Sprintf("Blockchain Node: %s\n%s", message.Node, JSONString(message.Info)))
    49  			return nil
    50  		},
    51  	}
    52  }
    53  
    54  // JSONString returns json string for message
    55  func JSONString(out interface{}) string {
    56  	byteAsJSON, err := json.MarshalIndent(out, "", "  ")
    57  	if err != nil {
    58  		log.Panic(err)
    59  	}
    60  	return fmt.Sprint(string(byteAsJSON))
    61  }