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

     1  // Copyright (c) 2022 IoTeX Foundation
     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  	"fmt"
    10  
    11  	"github.com/spf13/cobra"
    12  
    13  	"github.com/iotexproject/iotex-proto/golang/iotextypes"
    14  
    15  	"github.com/iotexproject/iotex-core/ioctl/config"
    16  	"github.com/iotexproject/iotex-core/ioctl/output"
    17  )
    18  
    19  // Multi-language support
    20  var (
    21  	_bcInfoCmdShorts = map[config.Language]string{
    22  		config.English: "Get current blockchain information",
    23  		config.Chinese: "获取当前区块链信息",
    24  	}
    25  )
    26  
    27  // _bcInfoCmd represents the bc info command
    28  var _bcInfoCmd = &cobra.Command{
    29  	Use:   "info",
    30  	Short: config.TranslateInLang(_bcInfoCmdShorts, config.UILanguage),
    31  	Args:  cobra.ExactArgs(0),
    32  	RunE: func(cmd *cobra.Command, args []string) error {
    33  		cmd.SilenceUsage = true
    34  		err := bcInfo()
    35  		return output.PrintError(err)
    36  	},
    37  }
    38  
    39  type infoMessage struct {
    40  	Node string                `json:"node"`
    41  	Info *iotextypes.ChainMeta `json:"info"`
    42  }
    43  
    44  func (m *infoMessage) String() string {
    45  	if output.Format == "" {
    46  		message := fmt.Sprintf("Blockchain Node: %s\n%s", m.Node, output.JSONString(m.Info))
    47  		return message
    48  	}
    49  	return output.FormatString(output.Result, m)
    50  }
    51  
    52  // bcInfo get current information of blockchain from server
    53  func bcInfo() error {
    54  	chainMeta, err := GetChainMeta()
    55  	if err != nil {
    56  		return output.NewError(0, "failed to get chain meta", err)
    57  	}
    58  	message := infoMessage{Node: config.ReadConfig.Endpoint, Info: chainMeta}
    59  	fmt.Println(message.String())
    60  	return nil
    61  }