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• interface IJob
•    - function work(bytes32 network, bytes ...
•    - function workable(bytes32 network)
• interface SequencerLike
•    - function isMaster(bytes32 network)
• interface IlkRegistryLike
•    - function list()
•    - function pip(bytes32 ilk)
• interface VatLike
•    - function ilks(bytes32 ilk)
• interface PokeLike
•    - function poke()
• interface SpotterLike
•    - function vat()
•    - function poke(bytes32 ilk)
•  contract OracleJob is IJob *
•    - function work(bytes32 network, bytes ...
•    - function workable(bytes32 network)

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/**
 *Submitted for verification at Etherscan.io on 2023-04-06
*/

// SPDX-License-Identifier: AGPL-3.0-or-later
// Copyright (C) 2022 Dai Foundation
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
pragma solidity 0.8.13;

/// @title Maker Keeper Network Job
/// @notice A job represents an independant unit of work that can be done by a keeper
interface IJob {

    /// @notice Executes this unit of work
    /// @dev Should revert iff workable() returns canWork of false
    /// @param network The name of the external keeper network
    /// @param args Custom arguments supplied to the job, should be copied from workable response
    function work(bytes32 network, bytes calldata args) external;

    /// @notice Ask this job if it has a unit of work available
    /// @dev This should never revert, only return false if nothing is available
    /// @dev This should normally be a view, but sometimes that's not possible
    /// @param network The name of the external keeper network
    /// @return canWork Returns true if a unit of work is available
    /// @return args The custom arguments to be provided to work() or an error string if canWork is false
    function workable(bytes32 network) external returns (bool canWork, bytes memory args);

}

interface SequencerLike {
    function isMaster(bytes32 network) external view returns (bool);
}

interface IlkRegistryLike {
    function list() external view returns (bytes32[] memory);
    function pip(bytes32 ilk) external view returns (address);
}

interface VatLike {
    function ilks(bytes32 ilk) external view returns (
        uint256 Art,
        uint256 rate,
        uint256 spot,
        uint256 line,
        uint256 dust
    );
}

interface PokeLike {
    function poke() external;
}

interface SpotterLike {
    function vat() external view returns (address);
    function poke(bytes32 ilk) external;
}

/// @title Triggers osm / oracle updates for all ilks
contract OracleJob is IJob {
    
    SequencerLike public immutable sequencer;
    IlkRegistryLike public immutable ilkRegistry;
    VatLike public immutable vat;
    SpotterLike public immutable spotter;

    // Don't actually store anything
    bytes32[] private toPoke;
    bytes32[] private spotterIlksToPoke;

    // --- Errors ---
    error NotMaster(bytes32 network);
    error NotSuccessful();

    // --- Events ---
    event Work(bytes32 indexed network, bytes32[] toPoke, bytes32[] spotterIlksToPoke, uint256 numSuccessful);

    constructor(address _sequencer, address _ilkRegistry, address _spotter) {
        sequencer = SequencerLike(_sequencer);
        ilkRegistry = IlkRegistryLike(_ilkRegistry);
        spotter = SpotterLike(_spotter);
        vat = VatLike(spotter.vat());
    }

    function work(bytes32 network, bytes calldata args) external override {
        if (!sequencer.isMaster(network)) revert NotMaster(network);

        (bytes32[] memory _toPoke, bytes32[] memory _spotterIlksToPoke) = abi.decode(args, (bytes32[], bytes32[]));
        uint256 numSuccessful = 0;
        for (uint256 i = 0; i < _toPoke.length; i++) {
            bytes32 ilk = _toPoke[i];
            (uint256 Art,,, uint256 line,) = vat.ilks(ilk);
            if (Art == 0 && line == 0) continue;
            PokeLike pip = PokeLike(ilkRegistry.pip(ilk));
            try pip.poke() {
                numSuccessful++;
            } catch {
            }
        }
        for (uint256 i = 0; i < _spotterIlksToPoke.length; i++) {
            bytes32 ilk = _spotterIlksToPoke[i];
            (uint256 Art,,  uint256 beforeSpot, uint256 line,) = vat.ilks(ilk);
            if (Art == 0 && line == 0) continue;
            spotter.poke(ilk);
            (,,  uint256 afterSpot,,) = vat.ilks(ilk);
            if (beforeSpot != afterSpot) {
                numSuccessful++;
            }
        }

        if (numSuccessful == 0) revert NotSuccessful();

        emit Work(network, _toPoke, _spotterIlksToPoke, numSuccessful);
    }

    function workable(bytes32 network) external override returns (bool, bytes memory) {
        if (!sequencer.isMaster(network)) return (false, bytes("Network is not master"));

        delete toPoke;
        delete spotterIlksToPoke;
        
        bytes32[] memory ilks = ilkRegistry.list();
        for (uint256 i = 0; i < ilks.length; i++) {
            bytes32 ilk = ilks[i];
            PokeLike pip = PokeLike(ilkRegistry.pip(ilk));

            if (address(pip) == address(0)) continue;
            (uint256 Art,,  uint256 beforeSpot, uint256 line,) = vat.ilks(ilk);
            if (Art == 0 && line == 0) continue; // Skip if no debt / line

            // Just try to poke the oracle and add to the list if it works
            // This won't add an OSM twice
            try pip.poke() {
                toPoke.push(ilk);
            } catch {
            }

            // See if the spot price changes
            spotter.poke(ilk);
            (,,  uint256 afterSpot,,) = vat.ilks(ilk);
            if (beforeSpot != afterSpot) {
                spotterIlksToPoke.push(ilk);
            }
        }

        if (toPoke.length > 0 || spotterIlksToPoke.length > 0) {
            return (true, abi.encode(toPoke, spotterIlksToPoke));
        } else {
            return (false, bytes("No ilks ready"));
        }
    }

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_sequencer","type":"address"},{"internalType":"address","name":"_ilkRegistry","type":"address"},{"internalType":"address","name":"_spotter","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"bytes32","name":"network","type":"bytes32"}],"name":"NotMaster","type":"error"},{"inputs":[],"name":"NotSuccessful","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"network","type":"bytes32"},{"indexed":false,"internalType":"bytes32[]","name":"toPoke","type":"bytes32[]"},{"indexed":false,"internalType":"bytes32[]","name":"spotterIlksToPoke","type":"bytes32[]"},{"indexed":false,"internalType":"uint256","name":"numSuccessful","type":"uint256"}],"name":"Work","type":"event"},{"inputs":[],"name":"ilkRegistry","outputs":[{"internalType":"contract IlkRegistryLike","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sequencer","outputs":[{"internalType":"contract SequencerLike","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"spotter","outputs":[{"internalType":"contract SpotterLike","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vat","outputs":[{"internalType":"contract VatLike","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"network","type":"bytes32"},{"internalType":"bytes","name":"args","type":"bytes"}],"name":"work","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"network","type":"bytes32"}],"name":"workable","outputs":[{"internalType":"bool","name":"","type":"bool"},{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000238b4e35daed6100c6162fae4510261f88996ec90000000000000000000000005a464c28d19848f44199d003bef5ecc87d090f8700000000000000000000000065c79fcb50ca1594b025960e539ed7a9a6d434a3

-----Decoded View---------------
Arg [0] : _sequencer (address): 0x238b4E35dAed6100C6162fAE4510261f88996EC9
Arg [1] : _ilkRegistry (address): 0x5a464C28D19848f44199D003BeF5ecc87d090F87
Arg [2] : _spotter (address): 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000238b4e35daed6100c6162fae4510261f88996ec9
Arg [1] : 0000000000000000000000005a464c28d19848f44199d003bef5ecc87d090f87
Arg [2] : 00000000000000000000000065c79fcb50ca1594b025960e539ed7a9a6d434a3

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