ミントのクローズ

import {
  airdropFactory,
  appendTransactionMessageInstructions,
  createSolanaRpc,
  createSolanaRpcSubscriptions,
  createTransactionMessage,
  generateKeyPairSigner,
  getSignatureFromTransaction,
  lamports,
  pipe,
  sendAndConfirmTransactionFactory,
  setTransactionMessageFeePayerSigner,
  setTransactionMessageLifetimeUsingBlockhash,
  signTransactionMessageWithSigners
} from "@solana/kit";
import { getCreateAccountInstruction } from "@solana-program/system";
import {
  getInitializeMintInstruction,
  getMintSize,
  TOKEN_2022_PROGRAM_ADDRESS,
  extension,
  getInitializeMintCloseAuthorityInstruction,
  getCloseAccountInstruction
} from "@solana-program/token-2022";

// 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, (will also act as the fee payer)
// and destination to receive recovered SOL after closing the mint
const authority = await generateKeyPairSigner();
const destination = 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();

// And a mint close authority extension.
const mintCloseAuthorityExtension = extension("MintCloseAuthority", {
  closeAuthority: authority.address
});

// Get default mint account size (in bytes), with the close mint extension
const space = BigInt(getMintSize([mintCloseAuthorityExtension]));

// 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)
// Invokes the system program
const createAccountInstruction = getCreateAccountInstruction({
  payer: authority,
  newAccount: mint,
  lamports: rent,
  space,
  programAddress: TOKEN_2022_PROGRAM_ADDRESS
});

// Instruction to initialize the close mint authority extension
const initializeCloseMintInstruction =
  getInitializeMintCloseAuthorityInstruction({
    mint: mint.address,
    closeAuthority: mintCloseAuthorityExtension.closeAuthority
  });

// Instruction to initialize mint account data
// Invokes the token program
const initializeMintInstruction = getInitializeMintInstruction({
  mint: mint.address,
  decimals: 9,
  mintAuthority: authority.address
});

const instructions = [
  createAccountInstruction,
  initializeCloseMintInstruction,
  initializeMintInstruction
];

// 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:", mint.address.toString());
console.log("Transaction Signature:", transactionSignature);

// Get a fresh blockhash for the close mint extension instruction
const { value: latestBlockhash2 } = await rpc.getLatestBlockhash().send();

const closeMintInstruction = getCloseAccountInstruction({
  account: mint.address,
  destination: destination.address,
  owner: authority
});

// Create transaction message for close mint extension
const closeMintMessage = pipe(
  createTransactionMessage({ version: 0 }),
  (tx) => setTransactionMessageFeePayerSigner(authority, tx),
  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash2, tx),
  (tx) => appendTransactionMessageInstructions([closeMintInstruction], tx)
);

// Sign transaction message with all required signers
const signedCloseMintTx =
  await signTransactionMessageWithSigners(closeMintMessage);

// Send and confirm transaction
await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(
  signedCloseMintTx,
  { commitment: "confirmed" }
);

// Get transaction signature
const closeMintTxSig = getSignatureFromTransaction(signedCloseMintTx);

console.log("\nDestination Address:", destination.address.toString());
console.log("Transaction Signature:", closeMintTxSig);

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_sdk::{
  commitment_config::CommitmentConfig,
  signature::{Keypair, Signer},
  system_instruction::create_account,
  transaction::Transaction,
};

use spl_token_2022::{
  ID as TOKEN_2022_ID,
  extension::ExtensionType,
  instruction::{close_account, initialize_mint, initialize_mint_close_authority},
  state::Mint,
};

#[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 keypair for the destination
  let destination = Keypair::new();

  // Airdrop 5 SOL to fee payer
  let airdrop_signature = client
    .request_airdrop(&fee_payer.pubkey(), 5_000_000_000)
    .await?;
  client.confirm_transaction(&airdrop_signature).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();

  // Get default mint account size (in bytes),
  let mint_space =
    ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::MintCloseAuthority])?;

  // get the rent in lamports for the mint account
  let mint_rent = client
    .get_minimum_balance_for_rent_exemption(mint_space)
    .await?;

  // Instruction to create new account for mint (token program)
  let create_account_instruction = create_account(
    &fee_payer.pubkey(), // payer
    &mint.pubkey(),      // new account (mint)
    mint_rent,           // lamports
    mint_space as u64,   // space
    &TOKEN_2022_ID,      // program id
  );

  let initialize_close_mint_instruction = initialize_mint_close_authority(
    &TOKEN_2022_ID,            // token program
    &mint.pubkey(),            // mint
    Some(&fee_payer.pubkey()), // close authority
  )?;

  // Instruction to initialize mint account data
  let initialize_mint_instruction = initialize_mint(
    &TOKEN_2022_ID,            // token program
    &mint.pubkey(),            // mint
    &fee_payer.pubkey(),       // mint authority
    Some(&fee_payer.pubkey()), // freeze authority
    9,                         // decimals
  )?;

  // Create transaction and add instructions
  let transaction = Transaction::new_signed_with_payer(
    &[
      create_account_instruction,
      initialize_close_mint_instruction,
      initialize_mint_instruction,
    ],
    Some(&fee_payer.pubkey()),
    &[&fee_payer, &mint],
    latest_blockhash,
  );

  // Send and confirm transaction
  let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;

  println!("Mint Address: {}", mint.pubkey());
  println!("\nTransaction Signature: {}", transaction_signature);

  // Get the latest blockhash for the close transaction
  let latest_blockhash = client.get_latest_blockhash().await?;

  let close_mint_instruction = close_account(
    &TOKEN_2022_ID,         // token program
    &mint.pubkey(),         // mint
    &destination.pubkey(),  // destination
    &fee_payer.pubkey(),    // authority
    &[&fee_payer.pubkey()], // signer keys
  )?;

  // Create transaction for closing the mint account
  let transaction = Transaction::new_signed_with_payer(
    &[close_mint_instruction],
    Some(&fee_payer.pubkey()),
    &[&fee_payer],
    latest_blockhash,
  );

  // Send and confirm transaction
  let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;

  println!("\nDestination Address: {}", destination.pubkey());
  println!("Transaction Signature: {}", transaction_signature);

  Ok(())
}