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Start with Maker resolver
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Guillaume Felley
parent
075fc2b08a
commit
95aaf9f0ba
276
contracts/protocols/reflexer.sol
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276
contracts/protocols/reflexer.sol
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/**
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*Submitted for verification at Etherscan.io on 2020-07-29
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*/
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pragma solidity ^0.6.0;
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pragma experimental ABIEncoderV2;
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interface ManagerLike {
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function ilks(uint) external view returns (bytes32);
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function owns(uint) external view returns (address);
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function urns(uint) external view returns (address);
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function vat() external view returns (address);
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}
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interface CdpsLike {
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function getCdpsAsc(address, address) external view returns (uint[] memory, address[] memory, bytes32[] memory);
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}
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interface VatLike {
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function ilks(bytes32) external view returns (uint, uint, uint, uint, uint);
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function dai(address) external view returns (uint);
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function urns(bytes32, address) external view returns (uint, uint);
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function gem(bytes32, address) external view returns (uint);
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}
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interface JugLike {
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function ilks(bytes32) external view returns (uint, uint);
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function base() external view returns (uint);
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}
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interface PotLike {
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function dsr() external view returns (uint);
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function pie(address) external view returns (uint);
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function chi() external view returns (uint);
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}
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interface SpotLike {
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function ilks(bytes32) external view returns (PipLike, uint);
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}
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interface PipLike {
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function peek() external view returns (bytes32, bool);
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}
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interface InstaMcdAddress {
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function manager() external view returns (address);
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function vat() external view returns (address);
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function jug() external view returns (address);
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function spot() external view returns (address);
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function pot() external view returns (address);
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function getCdps() external view returns (address);
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}
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contract DSMath {
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function add(uint x, uint y) internal pure returns (uint z) {
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require((z = x + y) >= x, "math-not-safe");
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}
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function sub(uint x, uint y) internal pure returns (uint z) {
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z = x - y <= x ? x - y : 0;
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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require(y == 0 || (z = x * y) / y == x, "math-not-safe");
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}
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uint constant WAD = 10 ** 18;
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uint constant RAY = 10 ** 27;
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function rmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), RAY / 2) / RAY;
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}
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), WAD / 2) / WAD;
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}
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function rdiv(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, RAY), y / 2) / y;
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}
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function wdiv(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, WAD), y / 2) / y;
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}
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}
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contract Helpers is DSMath {
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/**
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* @dev get MakerDAO MCD Address contract
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*/
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function getMcdAddresses() public pure returns (address) {
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return 0xF23196DF1C440345DE07feFbe556a5eF0dcD29F0;
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}
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struct VaultData {
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uint id;
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address owner;
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string colType;
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uint collateral;
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uint art;
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uint debt;
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uint liquidatedCol;
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uint borrowRate;
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uint colPrice;
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uint liquidationRatio;
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address vaultAddress;
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}
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struct ColInfo {
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uint borrowRate;
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uint price;
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uint liquidationRatio;
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uint debtCelling;
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uint totalDebt;
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}
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/**
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* @dev Convert String to bytes32.
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*/
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function stringToBytes32(string memory str) internal pure returns (bytes32 result) {
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require(bytes(str).length != 0, "String-Empty");
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// solium-disable-next-line security/no-inline-assembly
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assembly {
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result := mload(add(str, 32))
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}
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}
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/**
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* @dev Convert bytes32 to String.
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*/
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function bytes32ToString(bytes32 _bytes32) internal pure returns (string memory) {
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bytes32 _temp;
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uint count;
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for (uint256 i; i < 32; i++) {
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_temp = _bytes32[i];
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if( _temp != bytes32(0)) {
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count += 1;
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}
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}
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bytes memory bytesArray = new bytes(count);
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for (uint256 i; i < count; i++) {
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bytesArray[i] = (_bytes32[i]);
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}
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return (string(bytesArray));
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}
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function getFee(bytes32 ilk) internal view returns (uint fee) {
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address jug = InstaMcdAddress(getMcdAddresses()).jug();
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(uint duty,) = JugLike(jug).ilks(ilk);
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uint base = JugLike(jug).base();
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fee = add(duty, base);
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}
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function getColPrice(bytes32 ilk) internal view returns (uint price) {
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address spot = InstaMcdAddress(getMcdAddresses()).spot();
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address vat = InstaMcdAddress(getMcdAddresses()).vat();
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(, uint mat) = SpotLike(spot).ilks(ilk);
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(,,uint spotPrice,,) = VatLike(vat).ilks(ilk);
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price = rmul(mat, spotPrice);
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}
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function getColRatio(bytes32 ilk) internal view returns (uint ratio) {
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address spot = InstaMcdAddress(getMcdAddresses()).spot();
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(, ratio) = SpotLike(spot).ilks(ilk);
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}
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function getDebtCeiling(bytes32 ilk) internal view returns (uint debtCeiling, uint totalDebt) {
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address vat = InstaMcdAddress(getMcdAddresses()).vat();
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(uint totalArt,uint rate,,uint debtCeilingRad,) = VatLike(vat).ilks(ilk);
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debtCeiling = debtCeilingRad / 10 ** 45;
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totalDebt = rmul(totalArt, rate);
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}
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}
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contract VaultResolver is Helpers {
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function getVaults(address owner) external view returns (VaultData[] memory) {
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address manager = InstaMcdAddress(getMcdAddresses()).manager();
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address cdpManger = InstaMcdAddress(getMcdAddresses()).getCdps();
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(uint[] memory ids, address[] memory urns, bytes32[] memory ilks) = CdpsLike(cdpManger).getCdpsAsc(manager, owner);
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VaultData[] memory vaults = new VaultData[](ids.length);
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for (uint i = 0; i < ids.length; i++) {
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(uint ink, uint art) = VatLike(ManagerLike(manager).vat()).urns(ilks[i], urns[i]);
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(,uint rate, uint priceMargin,,) = VatLike(ManagerLike(manager).vat()).ilks(ilks[i]);
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uint mat = getColRatio(ilks[i]);
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vaults[i] = VaultData(
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ids[i],
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owner,
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bytes32ToString(ilks[i]),
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ink,
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art,
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rmul(art,rate),
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VatLike(ManagerLike(manager).vat()).gem(ilks[i], urns[i]),
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getFee(ilks[i]),
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rmul(priceMargin, mat),
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mat,
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urns[i]
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);
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}
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return vaults;
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}
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function getVaultById(uint id) external view returns (VaultData memory) {
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address manager = InstaMcdAddress(getMcdAddresses()).manager();
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address urn = ManagerLike(manager).urns(id);
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bytes32 ilk = ManagerLike(manager).ilks(id);
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(uint ink, uint art) = VatLike(ManagerLike(manager).vat()).urns(ilk, urn);
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(,uint rate, uint priceMargin,,) = VatLike(ManagerLike(manager).vat()).ilks(ilk);
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uint mat = getColRatio(ilk);
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uint feeRate = getFee(ilk);
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VaultData memory vault = VaultData(
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id,
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ManagerLike(manager).owns(id),
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bytes32ToString(ilk),
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ink,
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art,
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rmul(art,rate),
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VatLike(ManagerLike(manager).vat()).gem(ilk, urn),
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feeRate,
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rmul(priceMargin, mat),
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mat,
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urn
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);
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return vault;
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}
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function getColInfo(string[] memory name) public view returns (ColInfo[] memory) {
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ColInfo[] memory colInfo = new ColInfo[](name.length);
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for (uint i = 0; i < name.length; i++) {
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bytes32 ilk = stringToBytes32(name[i]);
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(uint debtCeiling, uint totalDebt) = getDebtCeiling(ilk);
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colInfo[i] = ColInfo(
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getFee(ilk),
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getColPrice(ilk),
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getColRatio(ilk),
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debtCeiling,
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totalDebt
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);
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}
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return colInfo;
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}
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}
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contract DSRResolver is VaultResolver {
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function getDsrRate() public view returns (uint dsr) {
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address pot = InstaMcdAddress(getMcdAddresses()).pot();
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dsr = PotLike(pot).dsr();
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}
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function getDaiPosition(address owner) external view returns (uint amt, uint dsr) {
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address pot = InstaMcdAddress(getMcdAddresses()).pot();
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uint chi = PotLike(pot).chi();
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uint pie = PotLike(pot).pie(owner);
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amt = rmul(pie,chi);
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dsr = getDsrRate();
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}
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}
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contract InstaMakerResolver is DSRResolver {
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string public constant name = "Maker-Resolver-v1.2";
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}
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