Các Chương Trình và Anchor

# Dump the program from mainnet
solana program dump CPMMoo8L3F4NbTegBCKVNunggL7H1Zpdmwpwh8KMoZ0F cpmm-onchain.so

# Build from known source
cargo build-bpf --manifest-path raydium-cp-swap/programs/cp-amm/Cargo.toml
cp target/deploy/raydium_cp_swap.so cpmm-source.so

# Compare
sha256sum cpmm-onchain.so cpmm-source.so

pub fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {
    // Manually parse instruction_data
    // Manually validate accounts
    // Manually deserialize account data
    // Manually check signer/writable flags
    // ... then do the actual work
}

#[program]
pub mod cpmm {
    use super::*;

    pub fn swap_base_input(
        ctx: Context<Swap>,
        amount_in: u64,
        min_out: u64,
    ) -> Result<()> {
        // Just the business logic — ctx is pre-validated
    }
}

#[derive(Accounts)]
pub struct Swap<'info> {
    pub payer: Signer<'info>,
    #[account(mut, seeds = [b"pool", config.key().as_ref(), ...], bump)]
    pub pool_state: AccountLoader<'info, PoolState>,
    #[account(mut)]
    pub input_vault: Box<Account<'info, TokenAccount>>,
    // ... more accounts
}

Account discriminator:     sha256("account:PoolState")[0..8]
Instruction discriminator: sha256("global:swap_base_input")[0..8]

#[error_code]
pub enum ErrorCode {
    #[msg("Slippage tolerance exceeded")]
    SlippageExceeded,
    #[msg("Pool is disabled")]
    PoolDisabled,
    // ...
}

anchor idl fetch CPMMoo8L3F4NbTegBCKVNunggL7H1Zpdmwpwh8KMoZ0F -o cpmm.idl.json

{
  "version":      "0.1.0",
  "name":         "raydium_cp_swap",
  "instructions": [ { "name": "swap_base_input", "accounts": [ ... ], "args": [ ... ] }, ... ],
  "accounts":     [ { "name": "PoolState", "type": { ... } }, ... ],
  "types":        [ { "name": "AmmConfig", "type": { ... } }, ... ],
  "errors":       [ { "code": 6000, "name": "SlippageExceeded", "msg": "..." }, ... ],
  "events":       [ { "name": "SwapEvent", "fields": [ ... ] }, ... ]
}

anchor idl build -o target/idl/cpmm.json
# TypeScript types auto-generated by Anchor's ts-client
# Raydium SDK already includes these

import { liquidityStateV4Layout, swapInstructionData }
  from "@raydium-io/raydium-sdk-v2";

const data = swapInstructionData.encode({
  instruction: 9,   // swap
  amountIn:    1_000_000n,
  minAmountOut: 950_000n,
});

const sim = await connection.simulateTransaction(tx);
console.log(sim.value.logs);

Program CPMMoo8... failed: custom program error: 0x1770

AnchorError: AccountNotInitialized. Error Number: 3012