Function process_create

programs/asset/program/src/processor/create.rs:33–285

Creates a new asset. ### Accounts: 0. `[writable, signer]` asset 1. `[optional_signer]` authority 2. `[]` owner 3. `[writable, optional]` group 4. `[signer, optional]` group_authority 5. `[writable, signer, optional]` payer 6. `[optional]` system_program

(
    program_id: &Pubkey,
    ctx: Context<Create>,
    args: MetadataInput,
)

///   5. `[writable, signer, optional]` payer
///   6. `[optional]` system_program
pub fn process_create(
    program_id: &Pubkey,
    ctx: Context<Create>,
    args: MetadataInput,
) -> ProgramResult {
    // account validation

    require!(
        ctx.accounts.asset.is_signer(),
        ProgramError::MissingRequiredSignature,
        "asset"
    );

    if ctx.accounts.asset.data_is_empty() {
        let payer = {
            require!(
                ctx.accounts.payer.is_some(),
                ProgramError::NotEnoughAccountKeys,
                "payer"
            );

            ctx.accounts.payer.unwrap()
        };

        require!(
            payer.is_signer(),
            ProgramError::MissingRequiredSignature,
            "payer"
        );

        let system_program = {
            require!(
                ctx.accounts.system_program.is_some(),
                ProgramError::NotEnoughAccountKeys,
                "system_program"
            );

            ctx.accounts.system_program.unwrap()
        };

        require!(
            system_program.key() == &system_program::ID,
            ProgramError::IncorrectProgramId,
            "system_program"
        );

        let space = Asset::LEN
            + if let Some(extensions) = &args.extensions {
                let mut total = 0;

                for extension in extensions {
                    total += std::alloc::Layout::from_size_align(
                        extension.length as usize + Extension::LEN,
                        std::mem::size_of::<u64>(),
                    )
                    .map_err(|_| AssetError::InvalidAlignment)?
                    .pad_to_align()
                    .size();