90 lines
3.0 KiB
Solidity
90 lines
3.0 KiB
Solidity
//SPDX-License-Identifier: MIT
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pragma solidity >=0.8.0 <0.9.0;
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import "./SimpleOracle.sol";
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import { StatisticsUtils } from "../utils/StatisticsUtils.sol";
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contract WhitelistOracle {
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using StatisticsUtils for uint256[];
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/////////////////
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/// Errors //////
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/////////////////
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error OnlyOwner();
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error IndexOutOfBounds();
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error NoOraclesAvailable();
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//////////////////////
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/// State Variables //
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//////////////////////
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address public owner;
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SimpleOracle[] public oracles;
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uint256 public constant STALE_DATA_WINDOW = 24 seconds;
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////////////////
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/// Events /////
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////////////////
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event OracleAdded(address oracleAddress, address oracleOwner);
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event OracleRemoved(address oracleAddress);
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///////////////////
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/// Modifiers /////
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///////////////////
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/**
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* @notice Modifier to restrict function access to the contract owner
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* @dev Currently disabled to make it easy for you to impersonate the owner
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*/
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modifier onlyOwner() {
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// if (msg.sender != owner) revert OnlyOwner();
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_;
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}
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///////////////////
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/// Constructor ///
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///////////////////
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constructor() {
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owner = msg.sender;
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}
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///////////////////
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/// Functions /////
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///////////////////
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/**
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* @notice Adds a new oracle to the whitelist by deploying a SimpleOracle contract (only contract owner)
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* @dev Creates a new SimpleOracle instance and adds it to the oracles array.
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* @param _owner The address that will own the newly created oracle and can update its price
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*/
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function addOracle(address _owner) public onlyOwner {}
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/**
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* @notice Removes an oracle from the whitelist by its array index (only contract owner)
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* @dev Uses swap-and-pop pattern for gas-efficient removal. Order is not preserved.
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* Reverts with IndexOutOfBounds, if the provided index is >= oracles.length.
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* @param index The index of the oracle to remove from the oracles array
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*/
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function removeOracle(uint256 index) public onlyOwner {}
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/**
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* @notice Returns the aggregated price from all active oracles using median calculation
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* @dev Filters oracles with timestamps older than STALE_DATA_WINDOW, then calculates median
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* of remaining valid prices. Uses StatisticsUtils for sorting and median calculation.
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* @return The median price from all active oracles
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*/
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function getPrice() public view returns (uint256) {}
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/**
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* @notice Returns the addresses of all oracles that have updated their price within the last STALE_DATA_WINDOW
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* @dev Iterates through all oracles and filters those with recent timestamps (within STALE_DATA_WINDOW).
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* Uses a temporary array to collect active nodes, then creates a right-sized return array
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* for gas optimization.
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* @return An array of addresses representing the currently active oracle contracts
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*/
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function getActiveOracleNodes() public view returns (address[] memory) {}
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}
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