Tài liệu SolanaToken trên SolanaTiện ích mở rộng

Đại diện vĩnh viễn

Cách triển khai tiện ích mở rộng InitializePermanentDelegate

InitializePermanentDelegate chỉ định một đại diện không thể thu hồi với quyền hạn trên tất cả token account cho một mint. Không giống như các đại diện thông thường mà chủ sở hữu token account có thể thu hồi, một đại diện vĩnh viễn không thể thay đổi hoặc xóa bỏ. Đại diện vĩnh viễn có thể chuyển, đốt và đóng băng token trong bất kỳ token account nào của mint đó.

Typescript

import { getCreateAccountInstruction } from "@solana-program/system";

import {

  extension,

  getInitializeAccountInstruction,

  getInitializeMintInstruction,

  getInitializePermanentDelegateInstruction,

  getMintSize,

  getTokenSize,

  TOKEN_2022_PROGRAM_ADDRESS

} from "@solana-program/token-2022";

import {

  airdropFactory,

  appendTransactionMessageInstructions,

  createSolanaRpc,

  createSolanaRpcSubscriptions,

  createTransactionMessage,

  generateKeyPairSigner,

  getSignatureFromTransaction,

  lamports,

  pipe,

  sendAndConfirmTransactionFactory,

  setTransactionMessageFeePayerSigner,

  setTransactionMessageLifetimeUsingBlockhash,

  signTransactionMessageWithSigners

} from "@solana/kit";



// Create Connection, local validator in this example

const rpc = createSolanaRpc("http://localhost:8899");

const rpcSubscriptions = createSolanaRpcSubscriptions("ws://localhost:8900");



// Generate the authority for the mint (also acts as fee payer)

const authority = await generateKeyPairSigner();



// Fund authority/fee payer

await airdropFactory({ rpc, rpcSubscriptions })({

  recipientAddress: authority.address,

  lamports: lamports(5_000_000_000n), // 5 SOL

  commitment: "confirmed"

});



// Generate keypair to use as address of mint

const mint = await generateKeyPairSigner();



// Define the permanent delegate config extension

const permanentDelegateExtension = extension("PermanentDelegate", {

  delegate: authority.address // this account will always be able to transfer/burn tokens

});



// Get mint account size with permanent delegate extension

const space = BigInt(getMintSize([permanentDelegateExtension]));



// Get minimum balance for rent exemption

const rent = await rpc.getMinimumBalanceForRentExemption(space).send();



// Get latest blockhash to include in transaction

const { value: latestBlockhash } = await rpc.getLatestBlockhash().send();



// Instruction to create new account for mint (token program)

const createMintAccountInstruction = getCreateAccountInstruction({

  payer: authority,

  newAccount: mint,

  lamports: rent,

  space,

  programAddress: TOKEN_2022_PROGRAM_ADDRESS

});



// Instruction to initialize permanent delegate extension

const initializePermanentDelegateInstruction =

  getInitializePermanentDelegateInstruction({

    mint: mint.address,

    delegate: authority.address

  });



// Instruction to initialize mint account data

const initializeMintInstruction = getInitializeMintInstruction({

  mint: mint.address,

  decimals: 6,

  mintAuthority: authority.address,

  freezeAuthority: authority.address

});



// Generate keypair to use as address of token account

const tokenAccount = await generateKeyPairSigner();



// get token account size (with extension awareness)

const tokenAccountLen = BigInt(getTokenSize());



// Get minimum balance for rent exemption

const tokenAccountRent = await rpc

  .getMinimumBalanceForRentExemption(tokenAccountLen)

  .send();



// Instruction to create new account for the token account

const createTokenAccountInstruction = getCreateAccountInstruction({

  payer: authority,

  newAccount: tokenAccount,

  lamports: tokenAccountRent,

  space: tokenAccountLen,

  programAddress: TOKEN_2022_PROGRAM_ADDRESS

});



// Instruction to initialize the created token account

const initializeTokenAccountInstruction = getInitializeAccountInstruction({

  account: tokenAccount.address,

  mint: mint.address,

  owner: authority.address

});



// Collect all instructions

const instructions = [

  createMintAccountInstruction,

  initializePermanentDelegateInstruction,

  initializeMintInstruction,

  createTokenAccountInstruction,

  initializeTokenAccountInstruction

];



// Create transaction message

const transactionMessage = pipe(

  createTransactionMessage({ version: 0 }),

  (tx) => setTransactionMessageFeePayerSigner(authority, tx),

  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, tx),

  (tx) => appendTransactionMessageInstructions(instructions, tx)

);



// Sign transaction message with all required signers

const signedTransaction =

  await signTransactionMessageWithSigners(transactionMessage);



// Send and confirm transaction

await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(

  signedTransaction,

  { commitment: "confirmed", skipPreflight: true }

);



// Get transaction signature

const transactionSignature = getSignatureFromTransaction(signedTransaction);



console.log(

  "Mint Address with Permanent Delegate Extension:",

  mint.address.toString()

);

console.log("Token Account:", tokenAccount.address.toString());

console.log("Permanent Delegate:", authority.address.toString());

console.log("Transaction Signature:", transactionSignature);
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::{

    signature::{Keypair, Signer},

    transaction::Transaction,

};

use solana_system_interface::instruction::create_account;

use spl_token_2022_interface::{

    extension::{

        permanent_delegate::PermanentDelegate, BaseStateWithExtensions, ExtensionType,

        StateWithExtensions,

    },

    instruction::{initialize_mint, initialize_permanent_delegate},

    state::Mint,

    ID as TOKEN_2022_PROGRAM_ID,

};



#[tokio::main]

async fn main() -> Result<()> {

    // Create connection to local validator

    let client = RpcClient::new_with_commitment(

        String::from("http://localhost:8899"),

        CommitmentConfig::confirmed(),

    );

    let latest_blockhash = client.get_latest_blockhash().await?;



    // Generate a new keypair for the fee payer

    let fee_payer = Keypair::new();



    // Generate a new keypair for the delegate

    let delegate = Keypair::new();



    // Airdrop 5 SOL to fee payer

    let airdrop_signature = client

        .request_airdrop(&fee_payer.pubkey(), 5_000_000_000)

        .await?;



    loop {

        let confirmed = client.confirm_transaction(&airdrop_signature).await?;

        if confirmed {

            break;

        }

    }



    // Generate keypair to use as address of mint

    let mint = Keypair::new();



    // Calculate mint account size with PermanentDelegate extension

    let mint_space =

        ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::PermanentDelegate])?;



    let mint_rent = client

        .get_minimum_balance_for_rent_exemption(mint_space)

        .await?;



    // Instruction to create new account for mint (token22)

    let create_mint_account_instruction = create_account(

        &fee_payer.pubkey(),    // payer

        &mint.pubkey(),         // new account (mint)

        mint_rent,              // lamports

        mint_space as u64,      // space

        &TOKEN_2022_PROGRAM_ID, // program id

    );



    // Instruction to initialize PermanentDelegate extension

    let initialize_permanent_delegate_ix = initialize_permanent_delegate(

        &TOKEN_2022_PROGRAM_ID,

        &mint.pubkey(),

        &delegate.pubkey(), // permanent delegate authority

    )?;



    // Instruction to initialize mint account data

    let initialize_mint_instruction = initialize_mint(

        &TOKEN_2022_PROGRAM_ID,    // program id

        &mint.pubkey(),            // mint

        &fee_payer.pubkey(),       // mint authority

        Some(&fee_payer.pubkey()), // freeze authority

        3,                         // decimals

    )?;



    // Construct transaction with PermanentDelegate extension

    let transaction = Transaction::new_signed_with_payer(

        &[

            create_mint_account_instruction,

            initialize_permanent_delegate_ix,

            initialize_mint_instruction,

        ],

        Some(&fee_payer.pubkey()),

        &[&fee_payer, &mint],

        latest_blockhash,

    );



    // Send and confirm transaction

    client.send_and_confirm_transaction(&transaction).await?;



    println!("Mint Address: {}", mint.pubkey());

    // Fetch mint account

    let mint_account = client.get_account(&mint.pubkey()).await?;

    // Deserialize the mint account with extensions

    let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;



    // Get all extension types enabled on this mint

    let mint_extension_types = mint_state.get_extension_types()?;

    println!("\nMint extensions enabled: {:?}", mint_extension_types);



    // Deserialize the PermanentDelegate extension data

    let permanent_delegate = mint_state.get_extension::<PermanentDelegate>()?;

    println!("\n{:#?}", permanent_delegate);



    Ok(())

}
Console
Click to execute the code.

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