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https://github.com/Instadapp/fluid-contracts-public.git
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56 lines
2.6 KiB
Solidity
56 lines
2.6 KiB
Solidity
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// SPDX-License-Identifier: BUSL-1.1
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pragma solidity 0.8.21;
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import { FluidOracle } from "../fluidOracle.sol";
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import { FallbackOracleImpl } from "../implementations/fallbackOracleImpl.sol";
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import { ErrorTypes } from "../errorTypes.sol";
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/// @title Chainlink / Redstone Oracle (with fallback)
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/// @notice Gets the exchange rate between the underlying asset and the peg asset by using:
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/// the price from a Chainlink price feed or a Redstone Oracle with one of them being used as main source and
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/// the other one acting as a fallback if the main source fails for any reason. Reverts if fetched rate is 0.
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contract FallbackCLRSOracle is FluidOracle, FallbackOracleImpl {
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/// @notice sets the main source, Chainlink Oracle and Redstone Oracle data.
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/// @param infoName_ Oracle identify helper name.
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/// @param mainSource_ which oracle to use as main source: 1 = Chainlink, 2 = Redstone (other one is fallback).
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/// @param chainlinkParams_ chainlink Oracle constructor params struct.
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/// @param redstoneOracle_ Redstone Oracle data. (address can be set to zero address if using Chainlink only)
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constructor(
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string memory infoName_,
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uint8 mainSource_,
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ChainlinkConstructorParams memory chainlinkParams_,
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RedstoneOracleData memory redstoneOracle_
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) FallbackOracleImpl(mainSource_, chainlinkParams_, redstoneOracle_) FluidOracle(infoName_) {}
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/// @inheritdoc FluidOracle
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function getExchangeRateOperate() public view virtual override returns (uint256 exchangeRate_) {
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(exchangeRate_, ) = _getRateWithFallback();
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if (exchangeRate_ == 0) {
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revert FluidOracleError(ErrorTypes.FallbackCLRSOracle__ExchangeRateZero);
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}
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}
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/// @inheritdoc FluidOracle
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function getExchangeRateLiquidate() public view virtual override returns (uint256 exchangeRate_) {
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(exchangeRate_, ) = _getRateWithFallback();
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if (exchangeRate_ == 0) {
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revert FluidOracleError(ErrorTypes.FallbackCLRSOracle__ExchangeRateZero);
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}
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}
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/// @inheritdoc FluidOracle
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function getExchangeRate() public view virtual override returns (uint256 exchangeRate_) {
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return getExchangeRateOperate();
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}
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/// @notice which oracle to use as main source:
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/// - 1 = Chainlink ONLY (no fallback)
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/// - 2 = Chainlink with Redstone Fallback
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/// - 3 = Redstone with Chainlink Fallback
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function FALLBACK_ORACLE_MAIN_SOURCE() public view returns (uint8) {
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return _FALLBACK_ORACLE_MAIN_SOURCE;
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}
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}
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