Mencabut Delegasi

Apa yang Dilakukan Pencabutan Delegasi?

Mencabut delegasi akan menghapus delegasi saat ini dari token account dan mengatur ulang jumlah yang didelegasikan menjadi nol.

Setelah pencabutan, delegasi sebelumnya tidak lagi memiliki wewenang untuk mentransfer atau membakar token atas nama token account tersebut.

Cara Mencabut Delegasi

Mencabut delegasi menggunakan instruksi Revoke dari Token Program.

Instruksi Revoke menghapus field delegasi pada token account sumber. Dalam Token Program, pemilik token account menandatangani pencabutan. Dalam Token Extensions Program, delegasi saat ini juga dapat mencabut delegasinya sendiri.

Referensi Sumber

ItemDeskripsiToken ProgramToken Extensions Program
AccountState token account menyimpan delegasi dan jumlah yang didelegasikan.SumberSumber
RevokeInstruksi yang menghapus delegasi saat ini dari token account.SumberSumber
process_revokeLogika processor bersama untuk pencabutan delegasi.SumberSumber

Typescript

Contoh Kit di bawah ini menunjukkan pendekatan yang direkomendasikan menggunakan @solana/kit. Contoh legacy menggunakan @solana/web3.js disertakan sebagai referensi.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
findAssociatedTokenPda,
tokenProgram,
TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";
const client = await createLocalClient()
.use(tokenProgram());
const mint = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const [tokenAccount] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_PROGRAM_ADDRESS
});
const result = await client.token.instructions
.revoke({
source: tokenAccount, // Token account whose delegate approval changes.
owner: client.payer // Owner approving this delegate change.
})
.sendTransaction();
const tokenAccountData = await client.token.accounts.token.fetch(tokenAccount);
console.log("Mint Address:", mint.address);
console.log("\nToken Account Address:", tokenAccount);
console.log("Token Account:", tokenAccountData.data);
console.log("\nDelegate Address:", delegate.address);
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,
approveChecked,
createMint,
getAccount,
mintToChecked,
revoke,
TOKEN_PROGRAM_ID
} from "@solana/spl-token";
const result = await revoke(
connection, // Connection to the local validator.
feePayer, // Account paying transaction fees.
associatedTokenAccount, // Token account whose delegate approval changes.
feePayer, // Owner approving this delegate change.
[], // Additional multisig signers.
{
commitment: "confirmed" // Confirmation options for the transaction.
},
TOKEN_PROGRAM_ID // Token program to invoke.
);
const tokenAccountData = await getAccount(
connection,
associatedTokenAccount,
"confirmed",
TOKEN_PROGRAM_ID
);
console.log("Mint Address:", mintPubkey.toBase58());
console.log(
"\nAssociated Token Account Address:",
associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
console.log("\nDelegate Address:", delegate.publicKey.toBase58());
console.log("\nTransaction Signature:", result);
Console
Click to execute the code.

Rust

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::{approve_checked, initialize_mint, mint_to_checked, revoke},
state::{Account, Mint},
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let delegate = Keypair::new();
let transaction = Transaction::new_signed_with_payer(
&[
revoke(
&token_program_id(), // Token program to invoke.
&associated_token_address, // Token account whose delegate approval changes.
&fee_payer.pubkey(), // Owner approving this delegate change.
&[], // Additional multisig signers.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
latest_blockhash,
);
let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
let token_account = client.get_account(&associated_token_address).await?;
let token_data = Account::unpack(&token_account.data)?;
println!("Mint Address: {}", mint.pubkey());
println!(
"\nAssociated Token Account Address: {}",
associated_token_address
);
println!("Associated Token Account: {:#?}", token_data);
println!("\nDelegate Address: {}", delegate.pubkey());
println!("\nTransaction Signature: {}", transaction_signature);
Ok(())
}
Console
Click to execute the code.

Python

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.pubkey import Pubkey
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 (
approve_checked,
ApproveCheckedParams,
create_associated_token_account,
get_associated_token_address,
initialize_mint,
InitializeMintParams,
mint_to_checked,
MintToCheckedParams,
revoke,
RevokeParams,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID
DECIMALS = 2
AMOUNT_TO_MINT = 100
AMOUNT_TO_APPROVE = 25
async def main():
rpc = AsyncClient("http://localhost:8899")
delegate = Keypair()
async with rpc:
revoke_delegate_instruction = revoke(
RevokeParams(
program_id=TOKEN_PROGRAM_ID, # Token program to invoke.
account=token_account_address, # Token account whose delegate approval changes.
owner=fee_payer.pubkey(), # Account that owns the token account.
)
)
latest_blockhash = await rpc.get_latest_blockhash()
transaction = Transaction(
[fee_payer],
Message([revoke_delegate_instruction], fee_payer.pubkey()),
latest_blockhash.value.blockhash,
)
result = await rpc.send_transaction(transaction)
token_account_info = await token.get_account_info(token_account_address)
token_account = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in token_account_info._asdict().items()
}
print("Mint Address:", mint.pubkey())
print("\nToken Account Address:", token_account_address)
print("Token Account:")
print(json.dumps(token_account, indent=2))
print("\nDelegate Address:", delegate.pubkey())
print("\nTransaction Signature:", result.value)
if __name__ == "__main__":
asyncio.run(main())
Console
Click to execute the code.

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