🔐initialize_identity_depository

Permissionned - Only one per controller could be initiated, for 1:1 mint/redeem against a desired collateral mint.

Flow

• Checks

  • Anchor IDL accounts checks

  • Validates: same decimals for collateral_mint and redeemable_mint

  • Validates: enforced mint used for collateral_mint (hardcoded as USDC:EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v now)

• Handler

  • Initialises the depository PDA (IdentityDepository)

  • Initialises the collateral_vault PDA

  • Set redeemable_amount_under_management_cap to an initial value of 1000000 ui units.

  • Emits Anchor InitializeIdentityDepositoryEvent event

Parameters

-

Accounts in

programs/uxd/src/instructions/initialize_identity_depository.rs

// ...

#[derive(Accounts)]
pub struct InitializeIdentityDepository<'info> {
    /// #1 Authored call accessible only to the signer matching Controller.authority
    pub authority: Signer<'info>,

    /// #2
    #[account(mut)]
    pub payer: Signer<'info>,

    /// #3 The top level UXDProgram on chain account managing the redeemable mint
    #[account(
        mut,
        seeds = [CONTROLLER_NAMESPACE],
        bump = controller.load()?.bump,
        has_one = authority @UxdError::InvalidAuthority,
    )]
    pub controller: AccountLoader<'info, Controller>,

    /// #4 UXDProgram on chain account bound to a Controller instance
    #[account(
        init,
        seeds = [IDENTITY_DEPOSITORY_NAMESPACE], // Only a single instance per controller instance
        bump,
        payer = payer,
        space = IDENTITY_DEPOSITORY_SPACE,
    )]
    pub depository: AccountLoader<'info, IdentityDepository>,

    /// #5
    /// Token account holding the collateral from minting
    #[account(
        init,
        seeds = [IDENTITY_DEPOSITORY_COLLATERAL_NAMESPACE],
        token::authority = depository,
        token::mint = collateral_mint,
        bump,
        payer = payer,
    )]
    pub collateral_vault: Account<'info, TokenAccount>,

    /// #6 The collateral mint used by the `depository` instance
    pub collateral_mint: Account<'info, Mint>,

    /// #7 System Program
    pub system_program: Program<'info, System>,

    /// #8 Token Program
    pub token_program: Program<'info, Token>,

    /// #9 Rent Sysvar
    pub rent: Sysvar<'info, Rent>,
}

// ...