Các ví dụ mã AMM v4

import { Connection, Keypair, clusterApiUrl } from "@solana/web3.js";
import { Raydium, TxVersion } from "@raydium-io/raydium-sdk-v2";
import fs from "node:fs";

const connection = new Connection(process.env.RPC_URL ?? clusterApiUrl("mainnet-beta"));
const owner = Keypair.fromSecretKey(
  new Uint8Array(JSON.parse(fs.readFileSync(process.env.KEYPAIR!, "utf8"))),
);
const raydium = await Raydium.load({ owner, connection, cluster: "mainnet" });

import { PublicKey } from "@solana/web3.js";

// `liquidity.getPoolInfoFromRpc` takes the pool id as a base58 STRING, not a PublicKey.
const poolId = "58oQChx4yWmvKdwLLZzBi4ChoCc2fqCUWBkwMihLYQo2"; // SOL-USDC, see reference/program-addresses

const data = await raydium.liquidity.getPoolInfoFromRpc({ poolId });
const { poolInfo, poolKeys, poolRpcData } = data;

console.log("Pair:", poolInfo.mintA.symbol, "/", poolInfo.mintB.symbol);
console.log("Version:", poolInfo.version);       // 4 for AMM v4
console.log("Market:", poolKeys.marketId);       // already a base58 string

import BN from "bn.js";

const amountIn = new BN(1_000_000);            // 1 USDC (6-decimal quote)
const inputMint = new PublicKey(poolInfo.mintB.address);  // USDC
const slippage  = 0.005;

const computed = raydium.liquidity.computeAmountOut({
  poolInfo,
  amountIn,
  mintIn: inputMint,
  mintOut: new PublicKey(poolInfo.mintA.address),
  slippage,
});

const { execute } = await raydium.liquidity.swap({
  poolInfo,
  poolKeys,
  amountIn,
  amountOut: computed.minAmountOut,
  fixedSide: "in",
  inputMint: poolInfo.mintB.address,   // a base58 STRING, and it is required
  txVersion: TxVersion.V0,
});

const { txId } = await execute({ sendAndConfirm: true });
console.log("Swap tx:", txId);

const amountOut = new BN(1_000_000_000);       // 1 SOL (9-decimal base)
const slippage  = 0.005;

const computed = raydium.liquidity.computeAmountIn({
  poolInfo,
  amountOut,
  mintOut: new PublicKey(poolInfo.mintA.address),
  mintIn: new PublicKey(poolInfo.mintB.address),
  slippage,
});

const { execute } = await raydium.liquidity.swap({
  poolInfo,
  poolKeys,
  amountIn: computed.maxAmountIn,
  amountOut,
  fixedSide: "out",
  inputMint: poolInfo.mintB.address,   // base58 string, not a PublicKey
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });

import { Percent, TokenAmount, toToken } from "@raydium-io/raydium-sdk-v2";

const amountARaw = new BN(100_000_000);        // 0.1 SOL, in base units

// computePairAmount takes a UI-decimal string (or Decimal) and a Percent —
// not a BN and not a number — and it is synchronous.
const { anotherAmount, maxAnotherAmount, minAnotherAmount } =
  raydium.liquidity.computePairAmount({
    poolInfo,
    amount: "0.1",
    baseIn: true,
    slippage: new Percent(1, 100),
  });

// addLiquidity takes THREE TokenAmounts; otherAmountMin is required.
const { execute } = await raydium.liquidity.addLiquidity({
  poolInfo,
  poolKeys,
  amountInA: new TokenAmount(toToken(poolInfo.mintA), amountARaw),
  amountInB: maxAnotherAmount,
  otherAmountMin: minAnotherAmount,
  fixedSide: "a",
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });

const lpAmount = new BN(50_000);               // LP to burn

const { execute } = await raydium.liquidity.removeLiquidity({
  poolInfo,
  poolKeys,
  lpAmount,
  baseAmountMin: new BN(0),
  quoteAmountMin: new BN(0),
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });

const { execute, transaction } = await raydium.liquidity.swap({
  /* ...params... */
  computeBudgetConfig: {
    units: 400_000,
    microLamports: 50_000,       // priority fee per CU
  },
});

use anchor_lang::prelude::*;
use anchor_lang::solana_program::program::invoke_signed;
use anchor_lang::solana_program::instruction::Instruction;

const AMM_V4_PROGRAM_ID: Pubkey = pubkey!("675kPX9MHTjS2zt1qfr1NYHuzeLXfQM9H24wFSUt1Mp8");

#[derive(Accounts)]
pub struct ProxyAmmV4Swap<'info> {
    /// CHECK:
    pub token_program: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub amm:          UncheckedAccount<'info>,
    /// CHECK:
    pub amm_authority: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub amm_open_orders: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub amm_target_orders: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub pool_coin_token_account: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub pool_pc_token_account: UncheckedAccount<'info>,
    /// CHECK:
    pub market_program: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market_bids: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market_asks: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market_event_queue: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market_coin_vault: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub market_pc_vault: UncheckedAccount<'info>,
    /// CHECK:
    pub market_vault_signer: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub user_source: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub user_dest: UncheckedAccount<'info>,
    pub user_owner: Signer<'info>,
}

pub fn proxy_swap(
    ctx: Context<ProxyAmmV4Swap>,
    amount_in: u64,
    minimum_amount_out: u64,
) -> Result<()> {
    // Instruction discriminator for SwapBaseIn is 9 on AMM v4.
    let mut data = vec![9u8];
    data.extend_from_slice(&amount_in.to_le_bytes());
    data.extend_from_slice(&minimum_amount_out.to_le_bytes());

    let ix = Instruction {
        program_id: AMM_V4_PROGRAM_ID,
        accounts: vec![
            AccountMeta::new_readonly(ctx.accounts.token_program.key(), false),
            AccountMeta::new(ctx.accounts.amm.key(), false),
            AccountMeta::new_readonly(ctx.accounts.amm_authority.key(), false),
            AccountMeta::new(ctx.accounts.amm_open_orders.key(), false),
            AccountMeta::new(ctx.accounts.amm_target_orders.key(), false),
            AccountMeta::new(ctx.accounts.pool_coin_token_account.key(), false),
            AccountMeta::new(ctx.accounts.pool_pc_token_account.key(), false),
            AccountMeta::new_readonly(ctx.accounts.market_program.key(), false),
            AccountMeta::new(ctx.accounts.market.key(), false),
            AccountMeta::new(ctx.accounts.market_bids.key(), false),
            AccountMeta::new(ctx.accounts.market_asks.key(), false),
            AccountMeta::new(ctx.accounts.market_event_queue.key(), false),
            AccountMeta::new(ctx.accounts.market_coin_vault.key(), false),
            AccountMeta::new(ctx.accounts.market_pc_vault.key(), false),
            AccountMeta::new_readonly(ctx.accounts.market_vault_signer.key(), false),
            AccountMeta::new(ctx.accounts.user_source.key(), false),
            AccountMeta::new(ctx.accounts.user_dest.key(), false),
            AccountMeta::new_readonly(ctx.accounts.user_owner.key(), true),
        ],
        data,
    };
    invoke_signed(&ix, &ctx.accounts.to_account_infos(), &[])?;
    Ok(())
}