I am trying to create a simple program that lets users mint SPL tokens. This program is bootstrapped by Anchor. Unfortunately, It failed on very first step creating a PDA account by CPI. Please see the detailed info below:
----Processors------
I tried to simplify the on-chain program's processor to create a simple PDA account using Solana system program. The processor has only one CPI.
----Instructions-----
I also tried to simplify the instruction by only inputting 4 accounts(See the screenshot or my code attached herewith): In typescript test code, it is also pretty simple. I just derive a PDA and then pass this PDA and the rest 3 accounts into the instruction. (two constraints 1. Assign a signer 2. Set mut for PDA account)
-----Error-----
But I still get the error
Transaction simulation failed: Error processing Instruction 0: An account required by the instruction is missing
Program 6KA5onmgQN7gsBZ5whPCTVL4EQcRob6vw7TYYNvik8xb invoke [1]
Program log: Instruction: Mintnft
Program log: First line in MintNFT processor
Instruction references an unknown account 11111111111111111111111111111111
Program 6KA5onmgQN7gsBZ5whPCTVL4EQcRob6vw7TYYNvik8xb consumed 15319 of 200000 compute units
Program 6KA5onmgQN7gsBZ5whPCTVL4EQcRob6vw7TYYNvik8xb failed: An account required by the instruction is missing
1) is minted
2 passing (2s)
1 failing
1) anchor_programs
is minted:
Error: failed to send transaction: Transaction simulation failed: Error processing Instruction 0: An account required by the instruction is missing
at Connection.sendEncodedTransaction (node_modules/@solana/web3.js/src/connection.ts:3961:13)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at Connection.sendRawTransaction (node_modules/@solana/web3.js/src/connection.ts:3918:20)
at sendAndConfirmRawTransaction (node_modules/@solana/web3.js/src/util/send-and-confirm-raw-transaction.ts:27:21)
at Provider.send (node_modules/@project-serum/anchor/src/provider.ts:118:18)
at Object.rpc [as mintnft] (node_modules/@project-serum/anchor/src/program/namespace/rpc.ts:25:23)
It seems that I did not pass the correct accounts into the invoke body, but I have spent like a whole day checking but still not sure if there are any other missing accounts ( or AccountInfo). It will be super appreciated if anyone can give me a hint. You can see the summary of my code attached in a screenshot format.
.src/lib.rs
use anchor_lang::prelude::*;
use anchor_spl::token::Mint;
use solana_program::program::invoke;
use solana_program::system_instruction;
declare_id!("ArT6Hwus2hMwmNeNeJ2zGcQnvZsbrhz8vTbBdq35AdgG");
#[program]
pub mod anchor_programs {
use super::*;
pub fn initialize(ctx: Context<Initialize>, price: u64) -> ProgramResult {
ctx.accounts.nft_creator.price = price;
ctx.accounts.nft_creator.collection = vec![];
Ok(())
}
pub fn mintnft(ctx: Context<MintNFT>) -> ProgramResult {
msg!("First line in MintNFT processor");
let (mint_pda, _bump) = Pubkey::find_program_address( // Calc PDA address from passed in nft_creater_program_id
&[b"nft_creator"],
&ctx.accounts.nft_creater_program.key()
);
if mint_pda != ctx.accounts.mint_pda_acc.key() { // Confirm if passed in PDA address is the same
return Err(ProgramError::Custom(123))
}
let create_acc_ix = system_instruction::create_account( // Try create account using system_instruction
&ctx.accounts.minter.key(),
&ctx.accounts.mint_pda_acc.key(),
ctx.accounts.rent.minimum_balance(Mint::LEN),
Mint::LEN as u64,
&spl_token::ID,
);
invoke(&create_acc_ix, &[ // Use invoke to call cross program invocation
ctx.accounts.minter.clone(),
ctx.accounts.mint_pda_acc.clone(),
])?;
Ok(())
}
}
#[derive(Accounts)]
pub struct Initialize<'info> {
#[account(init, payer=initializer, space=500)]
pub nft_creator: Account<'info, NftCreator>,
#[account(mut, signer)]
pub initializer: AccountInfo<'info>,
pub system_program: AccountInfo<'info>,
pub rent: Sysvar<'info, Rent>
}
#[derive(Accounts)]
pub struct MintNFT<'info> {
#[account(mut, signer)]
pub minter: AccountInfo<'info>,
pub nft_creater_program: AccountInfo<'info>,
#[account(mut)]
pub mint_pda_acc: AccountInfo<'info>,
pub rent: Sysvar<'info, Rent>
}
#[account]
pub struct NftCreator {
collection: Vec<Pubkey>,
price: u64
}
./tests/anchor_programs.ts
...
it('is minted', async () => {
let [mint_pda, _bump] = await anchor.web3.PublicKey.findProgramAddress( // Use findProgram Address to generate PDA
[Buffer.from(anchor.utils.bytes.utf8.encode("nft_creator"))],
program.programId
)
const tx = await program.rpc.mintnft({ // Call program mintnft instruction
accounts: { /**@ACCOUNTS */
// tokenProgram: TOKEN_PROGRAM_ID,
minter: initializerMainAccount.publicKey, // 1. minter as the initializer
// nftCreater: nftCreatorAcc.publicKey,
nftCreaterProgram: program.programId, // 2. this program id
mintPdaAcc: mint_pda, // 3. The mint_pda just generated
// mintPdaAcc: mint_pda.publicKey,
rent: anchor.web3.SYSVAR_RENT_PUBKEY, // 4. sysVar
},
signers: [initializerMainAccount]
});
console.log("Your transaction signature", tx);
});
});
Or refer to the full anchor project code in the github repo
I realized the issue:
pub system_program: Program<'info, System>
invoke_signed(
&create_acc_ix,
&[
self.minter.clone(),
self.mint_pda_acc.clone(),
],
&[&[ &mint_seed.as_ref(), &[*bump_seed] ]]
)?;