Deposit Token

Gambaran Umum

Instruksi Deposit memindahkan token SPL dari associated token account pengguna ke associated token account escrow. Setelah didepositkan, token tersedia untuk transfer off-chain melalui gateway. Parameter recipient yang bersifat opsional memungkinkan depositor mengkredit saldo channel pengguna lain.

Prasyarat

Instalasi dan pembuatan klien telah selesai
Dompet devnet dengan SOL (untuk biaya transaksi) dan token SPL yang ingin Anda depositkan
Instance Private Channels yang aktif dengan mint Anda di allowlist

Kode

import { getDepositInstructionAsync } from "../private-channel-escrow-program/clients/typescript/src/generated";
import {
  createSolanaRpc,
  address,
  pipe,
  createTransactionMessage,
  setTransactionMessageFeePayerSigner,
  setTransactionMessageLifetimeUsingBlockhash,
  appendTransactionMessageInstruction,
  signAndSendTransactionMessageWithSigners,
  assertIsTransactionMessageWithSingleSendingSigner,
  getBase58Decoder
} from "@solana/kit";
import { findAssociatedTokenPda } from "@solana-program/token";

const rpc = createSolanaRpc("https://api.devnet.solana.com");

const TOKEN_PROGRAM_ADDRESS = address(
  "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
);

// Derive the user's associated token account
const [userAta] = await findAssociatedTokenPda({
  mint: address(mintAddress),
  owner: address(payerSigner.address),
  tokenProgram: TOKEN_PROGRAM_ADDRESS
});

// Build the deposit instruction - allowedMint and instanceAta are auto-derived
const depositIx = await getDepositInstructionAsync({
  payer: payerSigner,
  user: payerSigner,
  instance: address(instancePda),
  mint: address(mintAddress),
  userAta,
  amount: 1_000_000n, // 1 USDC (6 decimals)
  recipient: null // null = credit the depositing user's channel balance
});

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

// Deposit is an ordinary Solana instruction sent to Solana RPC directly
// (not the gateway), so the versioned (v0) transaction format applies here.
const transactionMessage = pipe(
  createTransactionMessage({ version: 0 }),
  (m) => setTransactionMessageFeePayerSigner(payerSigner, m),
  (m) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, m),
  (m) => appendTransactionMessageInstruction(depositIx, m)
);

assertIsTransactionMessageWithSingleSendingSigner(transactionMessage);

const signatureBytes =
  await signAndSendTransactionMessageWithSigners(transactionMessage);
const signature = getBase58Decoder().decode(signatureBytes);
console.log("Deposit signature:", signature);

Verifikasi

Setelah transaksi devnet Anda dikonfirmasi, pengindeks mendeteksi event deposit melalui Yellowstone gRPC dan operator mencetak saldo setara di channel. Penundaan keamanan finalitas diterapkan sebelum pengkreditan, jadi perkirakan ~15 detik sebelum saldo channel tersedia.

Kueri saldo Anda melalui gateway (bukan RPC devnet) untuk konfirmasi:

import { createSolanaRpc, address } from "@solana/kit";
import { findAssociatedTokenPda } from "@solana-program/token";

// Point to the gateway, not a public Solana RPC
const privateChannelRpc = createSolanaRpc("http://localhost:8899");

const TOKEN_PROGRAM_ADDRESS = address(
  "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
);

const [channelAta] = await findAssociatedTokenPda({
  mint: address(mintAddress),
  owner: address(payerSigner.address),
  tokenProgram: TOKEN_PROGRAM_ADDRESS
});

const balance = await privateChannelRpc
  .getTokenAccountBalance(channelAta)
  .send();
console.log("Channel balance:", balance.value.uiAmountString);

Saldo yang tidak nol mengonfirmasi bahwa deposit telah diindeks dan dikreditkan. Jika saldo masih nol setelah 30 detik, periksa apakah indexer-solana dan operator-solana sedang berjalan (make docker-devnet-logs).

Langkah Selanjutnya

Kirim Transfer - kirim transfer off-chain pertama Anda