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Price Oracle
Throughout the Aave Protocol, we require reliable, up to date, and secure price feeds. Our proxy price provider contract provides this capability and works by:
Aave market
- 1.First checking for a price from a Chainlink aggregator.
- 2.
- 1.In the future, Aave governance mechanisms will manage the selection of sources and the fallback price oracle.
Always get the latest price oracle address by calling
getPriceOracle() on the LendingPoolAddressProvider contract.function getAssetPrice(address _asset) public view returns(uint256)Returns the price of the supported
_asset in market base currency. The Aave V2 Ethereum market uses ETH based oracles which return values in wei units. All other V2 markets use USD based oracles which return values with 8 decimals.Parameter Name | Type | Description |
|---|---|---|
_asset | address |
function getAssetsPrices(address[] calldata _assets) external view returns(uint256[] memory)Returns array of prices for designated
_assets in market base currency. The Aave V2 Ethereum market uses ETH based oracles which return values in wei units. All other V2 markets use USD based oracles which return values with 8 decimals.Parameter Name | Type | Description |
|---|---|---|
_assets | address[ ] |
function getSourceOfAsset(address _asset) external view returns(uint256)Returns the address of the price source for
_asset.Parameter Name | Type | Description |
|---|---|---|
_asset | address |
function getFallbackOracle() external view returns(uint256)Returns the address of the fallback oracle.
[ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "weth", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "weth", "type": "address" } ], "name": "WethSet", "type": "event" }, { "inputs": [], "name": "WETH", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }][ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "weth", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "weth", "type": "address" } ], "name": "WethSet", "type": "event" }, { "inputs": [], "name": "WETH", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }][ { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" }, { "internalType": "address", "name": "fallbackOracle", "type": "address" }, { "internalType": "address", "name": "baseCurrency", "type": "address" }, { "internalType": "uint256", "name": "baseCurrencyUnit", "type": "uint256" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "asset", "type": "address" }, { "indexed": true, "internalType": "address", "name": "source", "type": "address" } ], "name": "AssetSourceUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "baseCurrency", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "baseCurrencyUnit", "type": "uint256" } ], "name": "BaseCurrencySet", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "FallbackOracleUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "inputs": [], "name": "BASE_CURRENCY", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "BASE_CURRENCY_UNIT", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getAssetPrice", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" } ], "name": "getAssetsPrices", "outputs": [ { "internalType": "uint256[]", "name": "", "type": "uint256[]" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "getFallbackOracle", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "asset", "type": "address" } ], "name": "getSourceOfAsset", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address[]", "name": "assets", "type": "address[]" }, { "internalType": "address[]", "name": "sources", "type": "address[]" } ], "name": "setAssetSources", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "fallbackOracle", "type": "address" } ], "name": "setFallbackOracle", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }]
Last modified 3mo ago