forked from aergoio/aergo
/
getblock.go
86 lines (78 loc) · 1.91 KB
/
getblock.go
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/**
* @file
* @copyright defined in aergo/LICENSE.txt
*/
package cmd
import (
"context"
"encoding/binary"
"github.com/aergoio/aergo/cmd/aergocli/util"
aergorpc "github.com/aergoio/aergo/types"
"github.com/mr-tron/base58/base58"
"github.com/spf13/cobra"
)
var getblockCmd = &cobra.Command{
Use: "getblock",
Short: "Get block information",
Args: cobra.MinimumNArgs(0),
Run: execGetBlock,
}
var stream bool
var number uint64
var hash string
func init() {
rootCmd.AddCommand(getblockCmd)
getblockCmd.Flags().Uint64VarP(&number, "number", "n", 0, "Block height")
getblockCmd.Flags().StringVarP(&hash, "hash", "", "", "Block hash")
getblockCmd.Flags().BoolVar(&stream, "stream", false, "Get the block information by streamming")
}
func execGetBlock(cmd *cobra.Command, args []string) {
if stream {
bs, err := client.ListBlockStream(context.Background(), &aergorpc.Empty{})
if err != nil {
cmd.Printf("Failed: %s\n", err.Error())
return
}
if err != nil {
cmd.Printf("Failed: %s", err.Error())
return
}
for {
b, err := bs.Recv()
if err != nil {
cmd.Printf("Failed: %s\n", err.Error())
return
}
cmd.Println(util.BlockConvBase58Addr(b))
}
return
}
fflags := cmd.Flags()
if fflags.Changed("number") == false && fflags.Changed("hash") == false {
cmd.Println("no block --hash or --number specified")
return
}
var blockQuery []byte
if hash == "" {
b := make([]byte, 8)
binary.LittleEndian.PutUint64(b, uint64(number))
blockQuery = b
} else {
decoded, err := base58.Decode(hash)
if err != nil {
cmd.Printf("decode error: %s", err.Error())
return
}
if len(decoded) == 0 {
cmd.Println("decode error:")
return
}
blockQuery = decoded
}
msg, err := client.GetBlock(context.Background(), &aergorpc.SingleBytes{Value: blockQuery})
if nil == err {
cmd.Println(util.BlockConvBase58Addr(msg))
} else {
cmd.Printf("Failed: %s\n", err.Error())
}
}