ApxUSDRateOracle

Inherits: Initializable, AccessManagedUpgradeable, UUPSUpgradeable, EInvalidAmount

Title: ApxUSDRateOracle

Provides the exchange rate of apxUSD relative to USDC for Curve Stableswap-NG pools.

The rate represents how many USDC 1 apxUSD is worth based on the off-chain collateral backing apxUSD, expressed as a uint256 with 1e18 precision.

1e18 = 1 apxUSD is worth 1 USDC
1.02e18 = 1 apxUSD is worth 1.02 USDC Called by the Curve pool via staticcall to rate().

State Variables

bytes32 private constant STORAGE_LOCATION = 0x27bd078109e9748e45a8094381d0fb92b7b8cc1084b35874a4d9e8826ec4f100

function _getStorage() private pure returns (ApxUSDRateOracleStorage storage $);

Note: oz-upgrades-unsafe-allow: constructor

constructor() ;

Initializes the oracle with a default rate of 1e18 (1:1 peg).

function initialize(address initialAuthority) external initializer;

Parameters

Name	Type	Description
`initialAuthority`	`address`	The address of the authority that can set the rate.

Returns the current rate of apxUSD relative to USDC.

function rate() external view returns (uint256);

Returns

Name	Type	Description
`<none>`	`uint256`	The current rate in 1e18 precision.

Sets the rate of apxUSD relative to USDC.

function setRate(uint256 newRate) external restricted;

Parameters

Name	Type	Description
`newRate`	`uint256`	The new rate in 1e18 precision (must be > 0).

function _authorizeUpgrade(address newImplementation) internal override restricted;

event RateUpdated(uint256 oldRate, uint256 newRate);

Note: storage-location: erc7201:apyx.storage.ApxUSDRateOracle

struct ApxUSDRateOracleStorage {
    uint256 rate;
}