Đóng Tài Khoản Token

Đóng Tài Khoản Token Có Tác Dụng Gì?

Đóng một tài khoản token sẽ xóa tài khoản đó và hoàn trả lamport tiền thuê của tài khoản token về một tài khoản đích.

Số dư token phải bằng không trước khi có thể đóng tài khoản. Một tài khoản bị đóng băng vẫn có thể được đóng nếu số dư token của tài khoản đó bằng không. Tài khoản token Wrapped SOL là trường hợp ngoại lệ và có thể được đóng khi còn số dư token để thu hồi lại SOL gốc. Chủ sở hữu tài khoản hoặc quyền đóng tài khoản sẽ ký vào lệnh đóng.

Cách Đóng Một Tài Khoản Token

Đóng một tài khoản token sử dụng lệnh CloseAccount của Token Program.

Lệnh CloseAccount chuyển lamport của tài khoản nguồn sang một tài khoản đích, xóa sạch tài khoản nguồn và xóa tài khoản nguồn. Token Extensions Program áp dụng các kiểm tra đóng bổ sung cho một số tiện ích mở rộng nhất định, nhưng quy trình đóng cơ bản vẫn giống nhau.

Tài Liệu Tham Khảo Mã Nguồn

Mục	Mô tả	Token Program	Token Extensions Program
`Account`	Trạng thái tài khoản token lưu trữ số dư, trạng thái native và quyền đóng được sử dụng trong quá trình đóng tài khoản.	Source	Source
`CloseAccount`	Một lệnh đóng tài khoản token và chuyển lamport của tài khoản token sang một tài khoản đích.	Source	Source
`process_close_account`	Logic xử lý chung cho việc đóng tài khoản token.	Source	Source

Typescript

Các ví dụ bên dưới minh họa cách tiếp cận được khuyến nghị sử dụng @solana/kit. Các ví dụ cũ sử dụng @solana/web3.js được đưa vào để tham khảo.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
  findAssociatedTokenPda,
  getCreateAssociatedTokenInstructionAsync,
  tokenProgram,
  TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";

const client = await createLocalClient()
  .use(tokenProgram());

const mint = await generateKeyPairSigner();
const destination = client.payer.address;

const [tokenAccount] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: client.payer.address,
  tokenProgram: TOKEN_PROGRAM_ADDRESS
});


const result = await client.token.instructions
  .closeAccount({
    account: tokenAccount, // Token account to close.
    destination, // Account receiving the reclaimed SOL.
    owner: client.payer // Owner approving the account closure.
  })
  .sendTransaction();

const tokenAccountData =
  await client.token.accounts.token.fetchMaybe(tokenAccount);

console.log("Mint Address:", mint.address);
console.log("\nToken Account Address:", tokenAccount);
console.log("Token Account:", tokenAccountData);
console.log("\nDestination Address:", destination);
console.log("\nTransaction Signature:", result.context.signature);

Console

Click to execute the code.

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
  findAssociatedTokenPda,
  getCreateAssociatedTokenInstructionAsync,
  tokenProgram,
  TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";

const client = await createLocalClient()
  .use(tokenProgram());

const mint = await generateKeyPairSigner();
const destination = client.payer.address;

const [tokenAccount] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: client.payer.address,
  tokenProgram: TOKEN_PROGRAM_ADDRESS
});


const result = await client.token.instructions
  .closeAccount({
    account: tokenAccount, // Token account to close.
    destination, // Account receiving the reclaimed SOL.
    owner: client.payer // Owner approving the account closure.
  })
  .sendTransaction();

const tokenAccountData =
  await client.token.accounts.token.fetchMaybe(tokenAccount);

console.log("Mint Address:", mint.address);
console.log("\nToken Account Address:", tokenAccount);
console.log("Token Account:", tokenAccountData);
console.log("\nDestination Address:", destination);
console.log("\nTransaction Signature:", result.context.signature);

Console

Click to execute the code.

Web3.js

import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
import {
  createAssociatedTokenAccount,
  closeAccount,
  createMint,
  TOKEN_PROGRAM_ID
} from "@solana/spl-token";


const result = await closeAccount(
  connection, // Connection to the local validator.
  feePayer, // Account paying transaction fees.
  associatedTokenAccount, // Token account to close.
  destination, // Account receiving the reclaimed SOL.
  feePayer, // Owner approving the account closure.
  [], // Additional multisig signers.
  {
    commitment: "confirmed" // Confirmation options for the transaction.
  },
  TOKEN_PROGRAM_ID // Token program to invoke.
);

const tokenAccountData = await connection.getAccountInfo(
  associatedTokenAccount,
  "confirmed"
);

console.log("Mint Address:", mintPubkey.toBase58());
console.log(
  "\nAssociated Token Account Address:",
  associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
console.log("\nDestination Address:", destination.toBase58());
console.log("\nTransaction Signature:", result);

Console

Click to execute the code.

import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
import {
  createAssociatedTokenAccount,
  closeAccount,
  createMint,
  TOKEN_PROGRAM_ID
} from "@solana/spl-token";


const result = await closeAccount(
  connection, // Connection to the local validator.
  feePayer, // Account paying transaction fees.
  associatedTokenAccount, // Token account to close.
  destination, // Account receiving the reclaimed SOL.
  feePayer, // Owner approving the account closure.
  [], // Additional multisig signers.
  {
    commitment: "confirmed" // Confirmation options for the transaction.
  },
  TOKEN_PROGRAM_ID // Token program to invoke.
);

const tokenAccountData = await connection.getAccountInfo(
  associatedTokenAccount,
  "confirmed"
);

console.log("Mint Address:", mintPubkey.toBase58());
console.log(
  "\nAssociated Token Account Address:",
  associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
console.log("\nDestination Address:", destination.toBase58());
console.log("\nTransaction Signature:", result);

Console

Click to execute the code.

Rust

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
    program_pack::Pack,
    signature::{Keypair, Signer},
    transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
    address::get_associated_token_address, instruction::create_associated_token_account,
};
use spl_token_interface::{
    id as token_program_id,
    instruction::{close_account, initialize_mint},
    state::{Account, Mint},
};

#[tokio::main]
async fn main() -> Result<()> {
    let client = RpcClient::new_with_commitment(
        String::from("http://localhost:8899"),
        CommitmentConfig::confirmed(),
    );


    let associated_token_address = get_associated_token_address(&fee_payer.pubkey(), &mint.pubkey());
    let destination = fee_payer.pubkey();
    let transaction = Transaction::new_signed_with_payer(
        &[
            close_account(
                &token_program_id(), // Token program to invoke.
                &associated_token_address, // Token account to close.
                &destination, // Account receiving the reclaimed SOL.
                &fee_payer.pubkey(), // Owner approving the account closure.
                &[], // Additional multisig signers.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        latest_blockhash,
    );

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
    let token_data = match client.get_account(&associated_token_address).await {
        Ok(account) => Some(Account::unpack(&account.data)?),
        Err(_) => None,
    };

    println!("Mint Address: {}", mint.pubkey());
    println!(
        "\nAssociated Token Account Address: {}",
        associated_token_address
    );
    println!("Associated Token Account: {:#?}", token_data);
    println!("\nDestination Address: {}", destination);
    println!("\nTransaction Signature: {}", transaction_signature);

    Ok(())
}

Console

Click to execute the code.

Rust

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
    program_pack::Pack,
    signature::{Keypair, Signer},
    transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
    address::get_associated_token_address, instruction::create_associated_token_account,
};
use spl_token_interface::{
    id as token_program_id,
    instruction::{close_account, initialize_mint},
    state::{Account, Mint},
};

#[tokio::main]
async fn main() -> Result<()> {
    let client = RpcClient::new_with_commitment(
        String::from("http://localhost:8899"),
        CommitmentConfig::confirmed(),
    );


    let associated_token_address = get_associated_token_address(&fee_payer.pubkey(), &mint.pubkey());
    let destination = fee_payer.pubkey();
    let transaction = Transaction::new_signed_with_payer(
        &[
            close_account(
                &token_program_id(), // Token program to invoke.
                &associated_token_address, // Token account to close.
                &destination, // Account receiving the reclaimed SOL.
                &fee_payer.pubkey(), // Owner approving the account closure.
                &[], // Additional multisig signers.
            )?,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        latest_blockhash,
    );

    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
    let token_data = match client.get_account(&associated_token_address).await {
        Ok(account) => Some(Account::unpack(&account.data)?),
        Err(_) => None,
    };

    println!("Mint Address: {}", mint.pubkey());
    println!(
        "\nAssociated Token Account Address: {}",
        associated_token_address
    );
    println!("Associated Token Account: {:#?}", token_data);
    println!("\nDestination Address: {}", destination);
    println!("\nTransaction Signature: {}", transaction_signature);

    Ok(())
}

Console

Click to execute the code.

Python

#!/usr/bin/env python3

import asyncio
import json
from solana.rpc.async_api import AsyncClient
from solders.keypair import Keypair
from solders.message import Message
from solders.system_program import create_account, CreateAccountParams
from solders.transaction import Transaction
from spl.token.async_client import AsyncToken
from spl.token.instructions import (
    close_account,
    CloseAccountParams,
    create_associated_token_account,
    get_associated_token_address,
    initialize_mint,
    InitializeMintParams,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID

async def main():
    rpc = AsyncClient("http://localhost:8899")

    async with rpc:

        close_account_instruction = close_account(
            CloseAccountParams(
                program_id=TOKEN_PROGRAM_ID,  # Token program to invoke.
                account=token_account_address,  # Token account to close.
                dest=fee_payer.pubkey(),  # Account receiving the reclaimed lamports.
                owner=fee_payer.pubkey(),  # Account allowed to close the token account.
            )
        )
        latest_blockhash = await rpc.get_latest_blockhash()
        transaction = Transaction(
            [fee_payer],
            Message([close_account_instruction], fee_payer.pubkey()),
            latest_blockhash.value.blockhash,
        )
        result = await rpc.send_transaction(transaction)

        closed_token_account = (await rpc.get_account_info(token_account_address)).value

        print("Mint Address:", mint.pubkey())
        print("\nToken Account Address:", token_account_address)
        print("Token Account:")
        print(json.dumps(closed_token_account, indent=2))
        print("\nTransaction Signature:", result.value)

if __name__ == "__main__":
    asyncio.run(main())

Console

Click to execute the code.

Python

#!/usr/bin/env python3

import asyncio
import json
from solana.rpc.async_api import AsyncClient
from solders.keypair import Keypair
from solders.message import Message
from solders.system_program import create_account, CreateAccountParams
from solders.transaction import Transaction
from spl.token.async_client import AsyncToken
from spl.token.instructions import (
    close_account,
    CloseAccountParams,
    create_associated_token_account,
    get_associated_token_address,
    initialize_mint,
    InitializeMintParams,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID

async def main():
    rpc = AsyncClient("http://localhost:8899")

    async with rpc:

        close_account_instruction = close_account(
            CloseAccountParams(
                program_id=TOKEN_PROGRAM_ID,  # Token program to invoke.
                account=token_account_address,  # Token account to close.
                dest=fee_payer.pubkey(),  # Account receiving the reclaimed lamports.
                owner=fee_payer.pubkey(),  # Account allowed to close the token account.
            )
        )
        latest_blockhash = await rpc.get_latest_blockhash()
        transaction = Transaction(
            [fee_payer],
            Message([close_account_instruction], fee_payer.pubkey()),
            latest_blockhash.value.blockhash,
        )
        result = await rpc.send_transaction(transaction)

        closed_token_account = (await rpc.get_account_info(token_account_address)).value

        print("Mint Address:", mint.pubkey())
        print("\nToken Account Address:", token_account_address)
        print("Token Account:")
        print(json.dumps(closed_token_account, indent=2))
        print("\nTransaction Signature:", result.value)

if __name__ == "__main__":
    asyncio.run(main())

Console

Click to execute the code.

Mục lục