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250 lines
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<td width="35%" class="headerValue"><a href="../../index.html">top level</a> - <a href="index.html">v1/tornado-proxy</a> - FeeManager.sol<span style="font-size: 80%;"> (source / <a href="FeeManager.sol.func-sort-c.html">functions</a>)</span></td>
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<td class="headerValue">lcov.info</td>
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<td class="headerCovTableEntry">0</td>
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<td class="headerCovTableEntry">29</td>
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<td class="headerCovTableEntryLo">0.0 %</td>
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<td class="headerItem">Date:</td>
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<td class="headerValue">2023-06-20 21:04:08</td>
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<td></td>
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<td class="headerItem">Functions:</td>
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<td class="headerCovTableEntry">0</td>
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<td class="headerCovTableEntry">9</td>
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<td class="headerCovTableEntryLo">0.0 %</td>
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<span class="coverLegendCov">hit</span>
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<span class="coverLegendNoCov">not hit</span>
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<pre class="sourceHeading"> Line data Source code</pre>
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<pre class="source">
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<a name="1"><span class="lineNum"> 1 </span> : // SPDX-License-Identifier: MIT</a>
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<a name="2"><span class="lineNum"> 2 </span> : </a>
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<a name="3"><span class="lineNum"> 3 </span> : pragma solidity ^0.6.12;</a>
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<a name="4"><span class="lineNum"> 4 </span> : pragma experimental ABIEncoderV2;</a>
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<a name="5"><span class="lineNum"> 5 </span> : </a>
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<a name="6"><span class="lineNum"> 6 </span> : import { UniswapV3OracleHelper } from "../libraries/UniswapV3OracleHelper.sol";</a>
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<a name="7"><span class="lineNum"> 7 </span> : import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";</a>
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<a name="8"><span class="lineNum"> 8 </span> : import { EnsResolve } from "torn-token/contracts/ENS.sol";</a>
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<a name="9"><span class="lineNum"> 9 </span> : </a>
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<a name="10"><span class="lineNum"> 10 </span> : import "@openzeppelin/contracts/token/ERC20/IERC20.sol";</a>
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<a name="11"><span class="lineNum"> 11 </span> : import "tornado-anonymity-mining/contracts/interfaces/ITornadoInstance.sol";</a>
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<a name="12"><span class="lineNum"> 12 </span> : import "./InstanceRegistry.sol";</a>
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<a name="13"><span class="lineNum"> 13 </span> : </a>
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<a name="14"><span class="lineNum"> 14 </span> : /// @dev contract which calculates the fee for each pool</a>
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<a name="15"><span class="lineNum"> 15 </span> : contract FeeManager is EnsResolve {</a>
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<a name="16"><span class="lineNum"> 16 </span> : using SafeMath for uint256;</a>
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<a name="17"><span class="lineNum"> 17 </span> : </a>
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<a name="18"><span class="lineNum"> 18 </span> : uint256 public constant PROTOCOL_FEE_DIVIDER = 10000;</a>
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<a name="19"><span class="lineNum"> 19 </span> : address public immutable torn;</a>
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<a name="20"><span class="lineNum"> 20 </span> : address public immutable governance;</a>
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<a name="21"><span class="lineNum"> 21 </span> : InstanceRegistry public immutable registry;</a>
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<a name="22"><span class="lineNum"> 22 </span> : </a>
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<a name="23"><span class="lineNum"> 23 </span> : uint24 public uniswapTornPoolSwappingFee;</a>
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<a name="24"><span class="lineNum"> 24 </span> : uint32 public uniswapTimePeriod;</a>
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<a name="25"><span class="lineNum"> 25 </span> : </a>
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<a name="26"><span class="lineNum"> 26 </span> : uint24 public updateFeeTimeLimit;</a>
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<a name="27"><span class="lineNum"> 27 </span> : </a>
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<a name="28"><span class="lineNum"> 28 </span> : mapping(ITornadoInstance => uint160) public instanceFee;</a>
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<a name="29"><span class="lineNum"> 29 </span> : mapping(ITornadoInstance => uint256) public instanceFeeUpdated;</a>
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<a name="30"><span class="lineNum"> 30 </span> : </a>
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<a name="31"><span class="lineNum"> 31 </span> : event FeeUpdated(address indexed instance, uint256 newFee);</a>
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<a name="32"><span class="lineNum"> 32 </span> : event UniswapTornPoolSwappingFeeChanged(uint24 newFee);</a>
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<a name="33"><span class="lineNum"> 33 </span> : </a>
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<a name="34"><span class="lineNum"> 34 </span> : modifier onlyGovernance() {</a>
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<a name="35"><span class="lineNum"> 35 </span> : require(msg.sender == governance);</a>
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<a name="36"><span class="lineNum"> 36 </span> : _;</a>
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<a name="37"><span class="lineNum"> 37 </span> : }</a>
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<a name="38"><span class="lineNum"> 38 </span> : </a>
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<a name="39"><span class="lineNum"> 39 </span> : struct Deviation {</a>
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<a name="40"><span class="lineNum"> 40 </span> : address instance;</a>
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<a name="41"><span class="lineNum"> 41 </span> : int256 deviation; // in 10**-1 percents, so it can be like -2.3% if the price of TORN declined</a>
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<a name="42"><span class="lineNum"> 42 </span> : }</a>
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<a name="43"><span class="lineNum"> 43 </span> : </a>
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<a name="44"><span class="lineNum"> 44 </span> : constructor(</a>
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<a name="45"><span class="lineNum"> 45 </span> : address _torn,</a>
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<a name="46"><span class="lineNum"> 46 </span> : address _governance,</a>
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<a name="47"><span class="lineNum"> 47 </span> : bytes32 _registry</a>
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<a name="48"><span class="lineNum"> 48 </span> : ) public {</a>
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<a name="49"><span class="lineNum"> 49 </span> : torn = _torn;</a>
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<a name="50"><span class="lineNum"> 50 </span> : governance = _governance;</a>
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<a name="51"><span class="lineNum"> 51 </span> : registry = InstanceRegistry(resolve(_registry));</a>
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<a name="52"><span class="lineNum"> 52 </span> : }</a>
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<a name="53"><span class="lineNum"> 53 </span> : </a>
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<a name="54"><span class="lineNum"> 54 </span> : /**</a>
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<a name="55"><span class="lineNum"> 55 </span> : * @notice This function should update the fees of each pool</a>
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<a name="56"><span class="lineNum"> 56 </span> : */</a>
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<a name="57"><span class="lineNum"> 57 </span> : function updateAllFees() external {</a>
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<a name="58"><span class="lineNum"> 58 </span><span class="lineNoCov"> 0 : updateFees(registry.getAllInstanceAddresses());</span></a>
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<a name="59"><span class="lineNum"> 59 </span> : }</a>
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<a name="60"><span class="lineNum"> 60 </span> : </a>
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<a name="61"><span class="lineNum"> 61 </span> : /**</a>
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<a name="62"><span class="lineNum"> 62 </span> : * @notice This function should update the fees for tornado instances</a>
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<a name="63"><span class="lineNum"> 63 </span> : * (here called pools)</a>
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<a name="64"><span class="lineNum"> 64 </span> : * @param _instances pool addresses to update fees for</a>
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<a name="65"><span class="lineNum"> 65 </span> : * */</a>
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<a name="66"><span class="lineNum"> 66 </span> : function updateFees(ITornadoInstance[] memory _instances) public {</a>
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<a name="67"><span class="lineNum"> 67 </span><span class="lineNoCov"> 0 : for (uint256 i = 0; i < _instances.length; i++) {</span></a>
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<a name="68"><span class="lineNum"> 68 </span><span class="lineNoCov"> 0 : updateFee(_instances[i]);</span></a>
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<a name="69"><span class="lineNum"> 69 </span> : }</a>
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<a name="70"><span class="lineNum"> 70 </span> : }</a>
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<a name="71"><span class="lineNum"> 71 </span> : </a>
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<a name="72"><span class="lineNum"> 72 </span> : /**</a>
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<a name="73"><span class="lineNum"> 73 </span> : * @notice This function should update the fee of a specific pool</a>
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<a name="74"><span class="lineNum"> 74 </span> : * @param _instance address of the pool to update fees for</a>
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<a name="75"><span class="lineNum"> 75 </span> : */</a>
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<a name="76"><span class="lineNum"> 76 </span> : function updateFee(ITornadoInstance _instance) public {</a>
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<a name="77"><span class="lineNum"> 77 </span><span class="lineNoCov"> 0 : uint160 newFee = calculatePoolFee(_instance);</span></a>
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<a name="78"><span class="lineNum"> 78 </span><span class="lineNoCov"> 0 : instanceFee[_instance] = newFee;</span></a>
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<a name="79"><span class="lineNum"> 79 </span><span class="lineNoCov"> 0 : instanceFeeUpdated[_instance] = now;</span></a>
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<a name="80"><span class="lineNum"> 80 </span><span class="lineNoCov"> 0 : emit FeeUpdated(address(_instance), newFee);</span></a>
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<a name="81"><span class="lineNum"> 81 </span> : }</a>
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<a name="82"><span class="lineNum"> 82 </span> : </a>
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<a name="83"><span class="lineNum"> 83 </span> : /**</a>
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<a name="84"><span class="lineNum"> 84 </span> : * @notice This function should return the fee of a specific pool and update it if the time has come</a>
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<a name="85"><span class="lineNum"> 85 </span> : * @param _instance address of the pool to get fees for</a>
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<a name="86"><span class="lineNum"> 86 </span> : */</a>
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<a name="87"><span class="lineNum"> 87 </span> : function instanceFeeWithUpdate(ITornadoInstance _instance) public returns (uint160) {</a>
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<a name="88"><span class="lineNum"> 88 </span><span class="lineNoCov"> 0 : if (now - instanceFeeUpdated[_instance] > updateFeeTimeLimit) {</span></a>
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<a name="89"><span class="lineNum"> 89 </span><span class="lineNoCov"> 0 : updateFee(_instance);</span></a>
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<a name="90"><span class="lineNum"> 90 </span> : }</a>
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<a name="91"><span class="lineNum"> 91 </span><span class="lineNoCov"> 0 : return instanceFee[_instance];</span></a>
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<a name="92"><span class="lineNum"> 92 </span> : }</a>
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<a name="93"><span class="lineNum"> 93 </span> : </a>
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<a name="94"><span class="lineNum"> 94 </span> : /**</a>
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<a name="95"><span class="lineNum"> 95 </span> : * @notice function to update a single fee entry</a>
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<a name="96"><span class="lineNum"> 96 </span> : * @param _instance instance for which to update data</a>
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<a name="97"><span class="lineNum"> 97 </span> : * @return newFee the new fee pool</a>
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<a name="98"><span class="lineNum"> 98 </span> : */</a>
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<a name="99"><span class="lineNum"> 99 </span> : function calculatePoolFee(ITornadoInstance _instance) public view returns (uint160) {</a>
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<a name="100"><span class="lineNum"> 100 </span><span class="lineNoCov"> 0 : (bool isERC20, IERC20 token, , uint24 uniswapPoolSwappingFee, uint32 protocolFeePercentage) = registry.instances(_instance);</span></a>
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<a name="101"><span class="lineNum"> 101 </span><span class="lineNoCov"> 0 : if (protocolFeePercentage == 0) {</span></a>
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<a name="102"><span class="lineNum"> 102 </span><span class="lineNoCov"> 0 : return 0;</span></a>
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<a name="103"><span class="lineNum"> 103 </span> : }</a>
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<a name="104"><span class="lineNum"> 104 </span> : </a>
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<a name="105"><span class="lineNum"> 105 </span><span class="lineNoCov"> 0 : token = token == IERC20(0) && !isERC20 ? IERC20(UniswapV3OracleHelper.WETH) : token; // for eth instances</span></a>
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<a name="106"><span class="lineNum"> 106 </span><span class="lineNoCov"> 0 : uint256 tokenPriceRatio = UniswapV3OracleHelper.getPriceRatioOfTokens(</span></a>
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<a name="107"><span class="lineNum"> 107 </span> : [torn, address(token)],</a>
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<a name="108"><span class="lineNum"> 108 </span> : [uniswapTornPoolSwappingFee, uniswapPoolSwappingFee],</a>
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<a name="109"><span class="lineNum"> 109 </span> : uniswapTimePeriod</a>
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<a name="110"><span class="lineNum"> 110 </span> : );</a>
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<a name="111"><span class="lineNum"> 111 </span> : // prettier-ignore</a>
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<a name="112"><span class="lineNum"> 112 </span><span class="lineNoCov"> 0 : return</span></a>
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<a name="113"><span class="lineNum"> 113 </span><span class="lineNoCov"> 0 : uint160(</span></a>
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<a name="114"><span class="lineNum"> 114 </span> : _instance</a>
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<a name="115"><span class="lineNum"> 115 </span> : .denomination()</a>
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<a name="116"><span class="lineNum"> 116 </span> : .mul(UniswapV3OracleHelper.RATIO_DIVIDER)</a>
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<a name="117"><span class="lineNum"> 117 </span> : .div(tokenPriceRatio)</a>
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<a name="118"><span class="lineNum"> 118 </span> : .mul(uint256(protocolFeePercentage))</a>
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<a name="119"><span class="lineNum"> 119 </span> : .div(PROTOCOL_FEE_DIVIDER)</a>
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<a name="120"><span class="lineNum"> 120 </span> : );</a>
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<a name="121"><span class="lineNum"> 121 </span> : }</a>
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<a name="122"><span class="lineNum"> 122 </span> : </a>
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<a name="123"><span class="lineNum"> 123 </span> : /**</a>
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<a name="124"><span class="lineNum"> 124 </span> : * @notice function to update the uniswap fee</a>
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<a name="125"><span class="lineNum"> 125 </span> : * @param _uniswapTornPoolSwappingFee new uniswap fee</a>
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<a name="126"><span class="lineNum"> 126 </span> : */</a>
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<a name="127"><span class="lineNum"> 127 </span> : function setUniswapTornPoolSwappingFee(uint24 _uniswapTornPoolSwappingFee) public onlyGovernance {</a>
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<a name="128"><span class="lineNum"> 128 </span><span class="lineNoCov"> 0 : uniswapTornPoolSwappingFee = _uniswapTornPoolSwappingFee;</span></a>
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<a name="129"><span class="lineNum"> 129 </span><span class="lineNoCov"> 0 : emit UniswapTornPoolSwappingFeeChanged(uniswapTornPoolSwappingFee);</span></a>
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<a name="130"><span class="lineNum"> 130 </span> : }</a>
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<a name="131"><span class="lineNum"> 131 </span> : </a>
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<a name="132"><span class="lineNum"> 132 </span> : /**</a>
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<a name="133"><span class="lineNum"> 133 </span> : * @notice This function should allow governance to set a new period for twap measurement</a>
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<a name="134"><span class="lineNum"> 134 </span> : * @param newPeriod the new period to use</a>
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<a name="135"><span class="lineNum"> 135 </span> : * */</a>
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<a name="136"><span class="lineNum"> 136 </span> : function setPeriodForTWAPOracle(uint32 newPeriod) external onlyGovernance {</a>
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<a name="137"><span class="lineNum"> 137 </span><span class="lineNoCov"> 0 : uniswapTimePeriod = newPeriod;</span></a>
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<a name="138"><span class="lineNum"> 138 </span> : }</a>
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<a name="139"><span class="lineNum"> 139 </span> : </a>
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<a name="140"><span class="lineNum"> 140 </span> : /**</a>
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<a name="141"><span class="lineNum"> 141 </span> : * @notice This function should allow governance to set a new update fee time limit for instance fee updating</a>
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<a name="142"><span class="lineNum"> 142 </span> : * @param newLimit the new time limit to use</a>
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<a name="143"><span class="lineNum"> 143 </span> : * */</a>
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<a name="144"><span class="lineNum"> 144 </span> : function setUpdateFeeTimeLimit(uint24 newLimit) external onlyGovernance {</a>
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<a name="145"><span class="lineNum"> 145 </span><span class="lineNoCov"> 0 : updateFeeTimeLimit = newLimit;</span></a>
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<a name="146"><span class="lineNum"> 146 </span> : }</a>
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<a name="147"><span class="lineNum"> 147 </span> : </a>
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<a name="148"><span class="lineNum"> 148 </span> : /**</a>
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<a name="149"><span class="lineNum"> 149 </span> : * @notice returns fees deviations for each instance, so it can be easily seen what instance requires an update</a>
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<a name="150"><span class="lineNum"> 150 </span> : */</a>
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<a name="151"><span class="lineNum"> 151 </span> : function feeDeviations() public view returns (Deviation[] memory results) {</a>
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<a name="152"><span class="lineNum"> 152 </span><span class="lineNoCov"> 0 : ITornadoInstance[] memory instances = registry.getAllInstanceAddresses();</span></a>
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<a name="153"><span class="lineNum"> 153 </span><span class="lineNoCov"> 0 : results = new Deviation[](instances.length);</span></a>
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<a name="154"><span class="lineNum"> 154 </span> : </a>
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<a name="155"><span class="lineNum"> 155 </span><span class="lineNoCov"> 0 : for (uint256 i = 0; i < instances.length; i++) {</span></a>
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<a name="156"><span class="lineNum"> 156 </span><span class="lineNoCov"> 0 : uint256 marketFee = calculatePoolFee(instances[i]);</span></a>
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<a name="157"><span class="lineNum"> 157 </span><span class="lineNoCov"> 0 : int256 deviation;</span></a>
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<a name="158"><span class="lineNum"> 158 </span><span class="lineNoCov"> 0 : if (marketFee != 0) {</span></a>
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<a name="159"><span class="lineNum"> 159 </span><span class="lineNoCov"> 0 : deviation = int256((instanceFee[instances[i]] * 1000) / marketFee) - 1000;</span></a>
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<a name="160"><span class="lineNum"> 160 </span> : }</a>
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<a name="161"><span class="lineNum"> 161 </span> : </a>
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<a name="162"><span class="lineNum"> 162 </span><span class="lineNoCov"> 0 : results[i] = Deviation({ instance: address(instances[i]), deviation: deviation });</span></a>
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<a name="163"><span class="lineNum"> 163 </span> : }</a>
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<a name="164"><span class="lineNum"> 164 </span> : }</a>
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<a name="165"><span class="lineNum"> 165 </span> : }</a>
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</pre>
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<br>
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<table width="100%" border=0 cellspacing=0 cellpadding=0>
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<tr><td class="ruler"><img src="../../glass.png" width=3 height=3 alt=""></td></tr>
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<tr><td class="versionInfo">Generated by: <a href="https://github.com/linux-test-project/lcov" target="_parent">LCOV version 1.16</a></td></tr>
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