YearnDAIStrategy

Overview

The YearnDAIStrategy contract is a strategy that supplies DAI into a Yearn V2 Vault to earn yield. It handles conversions between the underlying asset and DAI through Curve's 3pool.

Constants

ICurveTriPool public constant triPool = ICurveTriPool(CURVE_3POOL_POOL_MAINNET);  // Curve's 3pool
address constant dai = DAI_MAINNET;                                                // DAI token address

Functions

Initialization Functions

initialize

function initialize(
    IMaxApyVault _vault,
    address[] calldata _keepers,
    bytes32 _strategyName,
    address _strategist,
    IYVault _yVault
) public virtual override initializer

Initializes the strategy with required components.

Parameters:

  • _vault: MaxApy vault address

  • _keepers: Array of keeper addresses

  • _strategyName: Name of the strategy

  • _strategist: Strategist address

  • _yVault: Yearn V2 vault address

Internal Core Functions

_invest

function _invest(uint256 amount, uint256 minOutputAfterInvestment) internal override returns (uint256 depositedAmount)

Invests assets by:

  1. Swapping underlying to DAI through Curve

  2. Depositing DAI into Yearn vault

Parameters:

  • amount: Amount to invest

  • minOutputAfterInvestment: Minimum expected shares

Returns:

  • depositedAmount: Amount of tokens received

_divest

function _divest(uint256 shares) internal override returns (uint256 withdrawn)

Withdraws assets by:

  1. Withdrawing DAI from Yearn vault

  2. Swapping DAI to underlying through Curve

Parameters:

  • shares: Amount of shares to withdraw

Returns:

  • withdrawn: Amount of assets received

Internal View Functions

_shareValue

function _shareValue(uint256 shares) internal view override returns (uint256)

Calculates underlying value of shares including Curve conversion rate.

Parameters:

  • shares: Share amount

Returns:

  • Underlying value

_sharesForAmount

function _sharesForAmount(uint256 amount) internal view override returns (uint256 shares)

Calculates shares needed for amount including Curve conversion rate.

Parameters:

  • amount: Asset amount

Returns:

  • Required shares

Key Features:

  • Uses Curve's 3pool for token conversions

  • Sets 1M DAI maximum trade size

  • Sets minimum trade size to 0.01 token units

  • Handles token conversions during deposits and withdrawals

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