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Solana Wallet with Go
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package main | |
import ( | |
"context" | |
"fmt" | |
"github.com/portto/solana-go-sdk/client" | |
"github.com/portto/solana-go-sdk/client/rpc" | |
"github.com/portto/solana-go-sdk/common" | |
"github.com/portto/solana-go-sdk/program/sysprog" | |
"github.com/portto/solana-go-sdk/types" | |
"time" | |
) | |
type Wallet struct { | |
account types.Account | |
c *client.Client | |
} | |
func CreateNewWallet(RPCEndpoint string) Wallet { | |
// create a new wallet using types.NewAccount() | |
return Wallet{ | |
types.NewAccount(), | |
client.NewClient(RPCEndpoint), | |
} | |
} | |
func ImportOldWallet(privateKey []byte, RPCEndpoint string) (Wallet, error) { | |
// import a wallet with bytes slice private key | |
wallet, err := types.AccountFromBytes(privateKey) | |
if err != nil { | |
return Wallet{}, err | |
} | |
return Wallet{ | |
wallet, | |
client.NewClient(RPCEndpoint), | |
}, nil | |
} | |
func (w Wallet) RequestAirdrop(amount uint64) (string, error) { | |
// request for SOL using RequestAirdrop() | |
txhash, err := w.c.RequestAirdrop( | |
context.TODO(), // request context | |
w.account.PublicKey.ToBase58(), // wallet address requesting airdrop | |
amount, // amount of SOL in lamport | |
) | |
if err != nil { | |
return "", err | |
} | |
return txhash, nil | |
} | |
func (w Wallet) GetBalance() (uint64, error) { | |
// fetch the balance using GetBalance() | |
balance, err := w.c.GetBalance( | |
context.TODO(), // request context | |
w.account.PublicKey.ToBase58(), // wallet to fetch balance for | |
) | |
if err != nil { | |
return 0, nil | |
} | |
return balance, nil | |
} | |
func (w Wallet) Transfer(receiver string, amount uint64) (string, error) { | |
// fetch the most recent blockhash | |
response, err := w.c.GetRecentBlockhash(context.TODO()) | |
if err != nil { | |
return "", err | |
} | |
// make a transfer message with the latest block hash | |
message := types.NewMessage( | |
w.account.PublicKey, // public key of the transaction signer | |
[]types.Instruction{ | |
sysprog.Transfer( | |
w.account.PublicKey, // public key of the transaction sender | |
common.PublicKeyFromString(receiver), // wallet address of the transaction receiver | |
amount, // transaction amount in lamport | |
), | |
}, | |
response.Blockhash, // recent block hash | |
) | |
// create a transaction with the message and TX signer | |
tx, err := types.NewTransaction(message, []types.Account{w.account, w.account}) | |
if err != nil { | |
return "", err | |
} | |
// send the transaction to the blockchain | |
txhash, err := w.c.SendTransaction2(context.TODO(), tx) | |
if err != nil { | |
return "", err | |
} | |
return txhash, nil | |
} | |
func main() { | |
// create a new wallet | |
wallet := CreateNewWallet(rpc.DevnetRPCEndpoint) | |
// request for an airdrop | |
fmt.Println(wallet.RequestAirdrop(1e9)) | |
time.Sleep(time.Second * 20) | |
// make transfer to another wallet | |
fmt.Println(wallet.Transfer("8t88TuqUxDMVpYGHcVoXnBCAH7TPrdZ7ydr4xqcNu2Ym", 5e8)) | |
time.Sleep(time.Second * 20) | |
// fetch wallet balance | |
fmt.Println(wallet.GetBalance()) | |
} |
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