Morpho Blue Oracles are contracts that can be used as oracles for markets on Morpho Blue.
The oracles implement the IOracle interface defined in IOracle.sol: they return the price of 1 asset of collateral token quoted in 1 asset of loan token.
The ChainlinkOracle is an oracle that uses Chainlink-compliant feeds to provide price data.
This oracle handles the following cases among others (let's say that our pair is A/B):
- A/B is a feed (typically, stETH/ETH).
- B/A is a feed (typically, ETH/USDC).
- A/C and B/C are feeds (typically, stETH/ETH and USDC/ETH).
- A/C, C/D and B/D are feeds (typically, WBTC/BTC, BTC/USD, USDC/USD).
- A/D, and B/C, C/D are feeds (typically, USDC/USD, WBTC/BTC, BTC/USD).
- A/C, C/D and B/E, E/D are feeds.
- A/C and C/B are feeds (typically, WBTC/BTC and BTC/ETH).
- A'/C and B/C are feeds, and there is an exchange rate between A and A'. (typically A=sDAI and A'=DAI).
Install dependencies: forge install
In a .env file, set ETH_RPC_URL to the URL of an Ethereum provider.
Run test: forge test
For example, to deploy a ChainlinkOracle on the Ethereum mainnet, for the sDAI/USDC market:
forge create src/ChainlinkOracle.sol:ChainlinkOracle --constructor-args "0x83F20F44975D03b1b09e64809B757c47f942BEeA" "0xAed0c38402a5d19df6E4c03F4E2DceD6e29c1ee9" "0x0000000000000000000000000000000000000000" "0x8fFfFfd4AfB6115b954Bd326cbe7B4BA576818f6" "0x0000000000000000000000000000000000000000" "1000000000000000000" "18" "6" --rpc-url https://eth-mainnet.g.alchemy.com/v2/<alchemy-key> --from <deployer-address> --ledgerAll audits are stored in the audits' folder.
Morpho Blue Oracles are licensed under GPL-2.0-or-later, see LICENSE.
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