84 lines
3.1 KiB
Solidity
84 lines
3.1 KiB
Solidity
pragma solidity ^0.6.12;
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import "@openzeppelin/contracts/math/SafeMath.sol";
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import "./interfaces/IDioneStaking.sol";
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contract DioneDispute {
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using SafeMath for uint256;
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IDioneStaking public dioneStaking;
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struct Dispute {
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bytes32 dhash; // id of dispute - keccak256(_miner,_requestId,_timestamp)
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uint256 sum; // vote measure (for/against this dispute)
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bool finished; // dispute was finished (closed) or not
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bool disputeResult; // true - dispute had basis, false - dispute was false
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address miner; // the miner against whom the dispute
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address disputeInitiator; // the miner who started the dispute
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uint256 timestamp; // dispute creation timestamp
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address[] voted; // map of miners who vote for/against
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}
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mapping(bytes32 => Dispute) disputes;
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event NewDispute(bytes32 dhash, address indexed miner, address indexed disputeInitiator);
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event NewVote(bytes32 dhash, address indexed votedMiner);
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event DisputeFinished(bytes32 dhash, bool status);
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constructor(IDioneStaking _dioneStaking) public {
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dioneStaking = _dioneStaking;
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}
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function beginDispute(address miner, uint256 requestID) public {
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bytes32 dhash = keccak256(abi.encodePacked(miner, requestID, now));
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require(disputes[dhash].dhash.length != 0, "dispute already exists");
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Dispute storage dispute = disputes[dhash];
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dispute.dhash = dhash;
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dispute.sum = 0;
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dispute.finished = false;
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dispute.disputeResult = false;
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dispute.miner = miner;
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dispute.timestamp = now;
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dispute.disputeInitiator = msg.sender;
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disputes[dhash] = dispute;
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emit NewDispute(dhash, miner, msg.sender);
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}
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function vote(bytes32 dhash, bool voteStatus) public {
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require(disputes[dhash].dhash.length == 0, "dispute doesn't exist");
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Dispute storage dispute = disputes[dhash];
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require(dispute.finished == false, "dispute already finished");
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require(dioneStaking.isMiner(msg.sender), "caller isn't dione miner");
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uint256 stake = dioneStaking.minerStake(msg.sender);
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if (voteStatus) {
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dispute.sum.sub(stake);
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} else {
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dispute.sum.add(stake);
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}
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dispute.voted.push(msg.sender);
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emit NewVote(dhash, msg.sender);
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}
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function finishDispute(bytes32 dhash) public {
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require(disputes[dhash].dhash.length == 0, "dispute doesn't exist");
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Dispute storage dispute = disputes[dhash];
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require((now - dispute.timestamp) >= 2 hours, "vote window must be two hours");
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require(dispute.finished == false, "dispute already finished");
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require(dispute.disputeInitiator == msg.sender, "only dispute initiator can call this function");
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if (dispute.sum < 0) {
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dispute.disputeResult = false;
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} else {
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dispute.disputeResult = true;
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dispute.voted.push(msg.sender);
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dioneStaking.slashMiner(dispute.miner, dispute.voted);
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}
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dispute.finished = true;
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emit DisputeFinished(dhash, dispute.disputeResult);
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}
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}
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