ما الذي تفعله الموافقة على المفوض؟
الموافقة على مفوض تسمح لعنوان آخر بنقل أو حرق كمية محدودة من الرموز من حساب رمزي نيابة عن مالك الحساب الرمزي.
يخزن حساب الرموز مفوضاً واحداً حالياً ومبلغاً مفوضاً واحداً في كل مرة. الموافقة على مفوض جديد تستبدل المفوض السابق والمخصصات على الحساب.
كيفية الموافقة على المفوض
الموافقة على المفوض تستخدم تعليمة Approve أو ApproveChecked من Token
Program.
الأمثلة أدناه تستخدم ApproveChecked، والتي تتطلب من المُستدعي تقديم السك
والكسور العشرية حتى تتمكن التعليمة من التحقق من السك المتوقع ودقة الرمز قبل
معالجة الموافقة.
مالك الحساب الرمزي يوقع على الموافقة.
المرجع المصدري
| العنصر | الوصف | Token Program | Token Extensions Program |
|---|---|---|---|
Account | حالة الحساب الرمزي تخزن المالك والمفوض والمبلغ المفوض. | المصدر | المصدر |
Approve | تعليمة الموافقة على المفوض التي تسجل المفوض والمخصصات لحساب رمزي دون مطالبة المُستدعي بتقديم السك أو الكسور العشرية. | المصدر | المصدر |
ApproveChecked | تعليمة الموافقة على المفوض التي تتطلب من المُستدعي تقديم السك والكسور العشرية والتحقق من تلك القيم قبل تسجيل المفوض والمخصصات. | المصدر | المصدر |
process_approve | منطق المعالج المشترك للموافقة على المفوض. | المصدر | المصدر |
Kit
تستخدم هذه الأمثلة @solana/kit.
import { createClient, generateKeyPairSigner, lamports } from "@solana/kit";import { solanaRpc, rpcAirdrop } from "@solana/kit-plugin-rpc";import { generatedPayer, airdropPayer } from "@solana/kit-plugin-signer";import {findAssociatedTokenPda,tokenProgram,TOKEN_PROGRAM_ADDRESS} from "@solana-program/token";const client = await createClient().use(generatedPayer()).use(solanaRpc({rpcUrl: "http://localhost:8899",rpcSubscriptionsUrl: "ws://localhost:8900"})).use(rpcAirdrop()).use(airdropPayer(lamports(1_000_000_000n))).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.approveChecked({source: tokenAccount, // Token account whose delegate approval changes.mint: mint.address, // Mint for the token the delegate may spend.delegate: delegate.address, // Delegate allowed to spend from the token account.owner: client.payer, // Owner approving this delegate change.amount: 25n, // Token amount in base units.decimals: 2 // Decimals defined on the mint account.}).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);
Web3.js v3
تستخدم هذه الأمثلة واجهة @solana/web3.js v3 القائمة على الفئات (classes) مع
أدوات بناء التعليمات @solana-program.
import {Connection,Keypair,PublicKey,sendAndConfirmTransaction,Transaction,LAMPORTS_PER_SOL} from "@solana/web3.js";import {findAssociatedTokenPda,getApproveCheckedInstruction,getCreateMintInstructionPlan,getMintToATAInstructionPlanAsync,getTokenDecoder,TOKEN_PROGRAM_ADDRESS} from "@solana-program/token";const result = await sendAndConfirmTransaction(connection,new Transaction({feePayer: feePayer.publicKey,blockhash: approveBlockhash.blockhash,lastValidBlockHeight: approveBlockhash.lastValidBlockHeight}).add(getApproveCheckedInstruction({source: associatedTokenAccount, // Token account whose delegate approval changes.mint: mint.publicKey, // Mint for the token the delegate may spend.delegate: delegate.publicKey, // Delegate allowed to spend from the token account.owner: feePayer, // Owner approving this delegate change.amount: 25, // Token amount in base units.decimals: 2 // Decimals defined on the mint account.})),[feePayer]);const tokenAccountInfo = await connection.getAccountInfo(new PublicKey(associatedTokenAccount));const tokenAccountData = getTokenDecoder().decode(tokenAccountInfo!.data);console.log("Mint Address:", mint.publicKey.toBase58());console.log("\nAssociated Token Account Address:", associatedTokenAccount);console.log("Associated Token Account:", tokenAccountData);console.log("\nDelegate Address:", delegate.publicKey.toBase58());console.log("\nTransaction Signature:", result);
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},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 approve_amount = 25;let transaction = Transaction::new_signed_with_payer(&[approve_checked(&token_program_id(), // Token program to invoke.&associated_token_address, // Token account whose delegate approval changes.&mint.pubkey(), // Mint for the token the delegate may spend.&delegate.pubkey(), // Delegate allowed to spend from the token account.&fee_payer.pubkey(), // Owner approving this delegate change.&[], // Additional multisig signers.approve_amount, // Token amount in base units.decimals, // Decimals defined on the mint account.)?,],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(())}
Python
#!/usr/bin/env python3import asyncioimport jsonfrom solana.rpc.async_api import AsyncClientfrom solders.keypair import Keypairfrom solders.message import Messagefrom solders.pubkey import Pubkeyfrom solders.system_program import create_account, CreateAccountParamsfrom solders.transaction import Transactionfrom spl.token.async_client import AsyncTokenfrom spl.token.instructions import (approve_checked,ApproveCheckedParams,create_associated_token_account,get_associated_token_address,initialize_mint,InitializeMintParams,mint_to_checked,MintToCheckedParams,)from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_IDDECIMALS = 2AMOUNT_TO_MINT = 100AMOUNT_TO_APPROVE = 25async def main():rpc = AsyncClient("http://localhost:8899")delegate = Keypair()async with rpc:approve_delegate_instruction = approve_checked(ApproveCheckedParams(program_id=TOKEN_PROGRAM_ID, # Token program to invoke.source=token_account_address, # Token account whose delegate approval changes.mint=mint.pubkey(), # Mint for the token the delegate may spend.delegate=delegate.pubkey(), # Account allowed to spend from the token account.owner=fee_payer.pubkey(), # Account that owns the token account.amount=AMOUNT_TO_APPROVE, # Token amount in base units.decimals=DECIMALS, # Decimals defined on the mint account.))latest_blockhash = await rpc.get_latest_blockhash()transaction = Transaction([fee_payer],Message([approve_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 valuefor 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())
Web3.js (القديم)
تستخدم هذه الأمثلة الإصدار القديم @solana/web3.js 1.x مع @solana/spl-token.
import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";import {createAssociatedTokenAccount,approveChecked,createMint,getAccount,mintToChecked,TOKEN_PROGRAM_ID} from "@solana/spl-token";const result = await approveChecked(connection, // Connection to the local validator.feePayer, // Account paying transaction fees.mintPubkey, // Mint for the token the delegate may spend.associatedTokenAccount, // Token account whose delegate approval changes.delegate.publicKey, // Delegate allowed to spend from the token account.feePayer, // Owner approving this delegate change.25, // Token amount in base units.2, // Decimals defined on the mint account.[], // 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);
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