以太坊系列之十六：golang进行智能合约开发
package main import ("fmt"
"log"
"math/big"
"strings"
"time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/ethclient"
"token-contract/mytoken"
)
const key = `
{
"address": "1a9ec3b0b807464e6d3398a59d6b0a369bf422fa",
"crypto": {
"cipher": "aes-128-ctr",
"ciphertext": "a471054846fb03e3e271339204420806334d1f09d6da40605a1a152e0d8e35f3",
"cipherparams": {
"iv": "44c5095dc698392c55a65aae46e0b5d9"
},
"kdf": "scrypt",
"kdfparams": {
"dklen": 32,
"n": 262144,
"p": 1,
"r": 8,
"salt": "e0a5fbaecaa3e75e20bccf61ee175141f3597d3b1bae6a28fe09f3507e63545e"
},
"mac": "cb3f62975cf6e7dfb454c2973bdd4a59f87262956d5534cdc87fb35703364043"
},
"id": "e08301fb-a263-4643-9c2b-d28959f66d6a",
"version": 3
}
`
func main() {
// Create an IPC based RPC connection to a remote node and an authorized transactor
conn, err := ethclient.Dial("\\\\.\\pipe\\geth.ipc")
if err != nil {
log.Fatalf("Failed to connect to the Ethereum client: %v", err)
}
auth, err := bind.NewTransactor(strings.NewReader(key), "123")
if err != nil {
log.Fatalf("Failed to create authorized transactor: %v", err)
}
// Deploy a new awesome contract for the binding demo
address, tx, token, err := mytoken.DeployMyToken(auth, conn, big.NewInt(9651), "Contracts in Go!!!", 0, "Go!")
if err != nil {
log.Fatalf("Failed to deploy new token contract: %v", err)
}
fmt.Printf("Contract pending deploy: 0x%x\n", address)
fmt.Printf("Transaction waiting to be mined: 0x%x\n\n", tx.Hash())
startTime := time.Now()
fmt.Printf("TX start @:%s", time.Now())
ctx := context.Background()
addressAfterMined, err := bind.WaitDeployed(ctx, conn, tx)
if err != nil {
log.Fatalf("failed to deploy contact when mining :%v", err)
}
fmt.Printf("tx mining take time:%s\n", time.Now().Sub(startTime))
if bytes.Compare(address.Bytes(), addressAfterMined.Bytes()) != 0 {
log.Fatalf("mined address :%s,before mined address:%s", addressAfterMined, address)
}
name, err := token.Name(&bind.CallOpts{Pending: true})
if err != nil {
log.Fatalf("Failed to retrieve pending name: %v", err)
}
fmt.Println("Pending name:", name)
}
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