OracleRouterBase
OracleRouterBase
MIN_DRIFT
uint256 MIN_DRIFT
MAX_DRIFT
uint256 MAX_DRIFT
FIXED_PRICE
address FIXED_PRICE
STALENESS_BUFFER
uint256 STALENESS_BUFFER
decimalsCache
mapping(address => uint8) decimalsCache
feedMetadata
function feedMetadata(address asset) internal view virtual returns (address feedAddress, uint256 maxStaleness)
The price feed contract to use for a particular asset along with maximum data staleness
Parameters
| Name | Type | Description |
|---|---|---|
| asset | address | address of the asset |
Return Values
| Name | Type | Description |
|---|---|---|
| feedAddress | address | address of the price feed for the asset |
| maxStaleness | uint256 | maximum acceptable data staleness duration |
price
function price(address asset) external view virtual returns (uint256)
Returns the total price in 18 digit unit for a given asset.
Parameters
| Name | Type | Description |
|---|---|---|
| asset | address | address of the asset |
Return Values
| Name | Type | Description |
|---|---|---|
| [0] | uint256 | uint256 unit price for 1 asset unit, in 18 decimal fixed |
getDecimals
function getDecimals(address _feed) internal view virtual returns (uint8)
cacheDecimals
function cacheDecimals(address asset) external returns (uint8)
Before an asset/feed price is fetches for the first time the decimals need to be cached. This is a gas optimization
Parameters
| Name | Type | Description |
|---|---|---|
| asset | address | address of the asset |
Return Values
| Name | Type | Description |
|---|---|---|
| [0] | uint8 | uint8 corresponding asset decimals |
shouldBePegged
function shouldBePegged(address _asset) internal view returns (bool)