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Governance.sol
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Governance.sol
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// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/governance/extensions/GovernorSettings.sol";
import "@openzeppelin/contracts/governance/extensions/GovernorCountingSimple.sol";
import "@openzeppelin/contracts/governance/extensions/GovernorVotes.sol";
import "./Injector.sol";
contract Governance is InjectorContextHolder, GovernorCountingSimple, GovernorSettings, IGovernance {
uint256 internal _instantVotingPeriod;
constructor(bytes memory constructorParams) InjectorContextHolder(constructorParams) Governor("Governance") GovernorSettings(0, 1, 0) {
}
function ctor(uint256 newVotingPeriod) external whenNotInitialized {
_setVotingPeriod(newVotingPeriod);
}
function getVotingSupply() external view returns (uint256) {
return _votingSupply(block.number);
}
function getVotingPower(address validator) external view returns (uint256) {
return _validatorOwnerVotingPowerAt(validator, block.number);
}
function proposeWithCustomVotingPeriod(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
string memory description,
uint256 customVotingPeriod
) public virtual onlyValidatorOwner(msg.sender) returns (uint256) {
_instantVotingPeriod = customVotingPeriod;
uint256 proposalId = propose(targets, values, calldatas, description);
_instantVotingPeriod = 0;
return proposalId;
}
function propose(
address[] memory targets,
uint256[] memory values,
bytes[] memory calldatas,
string memory description
) public virtual override onlyValidatorOwner(msg.sender) returns (uint256) {
return Governor.propose(targets, values, calldatas, description);
}
modifier onlyValidatorOwner(address account) {
address validatorAddress = _stakingContract.getValidatorByOwner(account);
require(_stakingContract.isValidatorActive(validatorAddress), "Governance: only validator owner");
_;
}
function votingPeriod() public view override(IGovernor, GovernorSettings) returns (uint256) {
// let use re-defined voting period for the proposals
if (_instantVotingPeriod != 0) {
return _instantVotingPeriod;
}
return GovernorSettings.votingPeriod();
}
function _getVotes(address account, uint256 blockNumber, bytes memory /*params*/) internal view virtual override returns (uint256) {
return _validatorOwnerVotingPowerAt(account, blockNumber);
}
function _countVote(uint256 proposalId, address account, uint8 support, uint256 weight, bytes memory params) internal virtual override(Governor, GovernorCountingSimple) {
address validatorAddress = _stakingContract.getValidatorByOwner(account);
return super._countVote(proposalId, validatorAddress, support, weight, params);
}
function _validatorOwnerVotingPowerAt(address validatorOwner, uint256 blockNumber) internal view returns (uint256) {
address validator = _stakingContract.getValidatorByOwner(validatorOwner);
// only active validators power makes sense
if (!_stakingContract.isValidatorActive(validator)) {
return 0;
}
return _validatorVotingPowerAt(validator, blockNumber);
}
function _validatorVotingPowerAt(address validator, uint256 blockNumber) internal view returns (uint256) {
// find validator votes at block number
uint64 epoch = uint64(blockNumber / _chainConfigContract.getEpochBlockInterval());
(,,uint256 totalDelegated,,,,,,) = _stakingContract.getValidatorStatusAtEpoch(validator, epoch);
// use total delegated amount is a voting power
return totalDelegated;
}
function _votingSupply(uint256 blockNumber) internal view returns (uint256 votingSupply) {
address[] memory validators = _stakingContract.getValidators();
for (uint256 i = 0; i < validators.length; i++) {
votingSupply += _validatorVotingPowerAt(validators[i], blockNumber);
}
return votingSupply;
}
function quorum(uint256 blockNumber) public view override returns (uint256) {
uint256 votingSupply = _votingSupply(blockNumber);
return votingSupply * 2 / 3;
}
function votingDelay() public view override(IGovernor, GovernorSettings) returns (uint256) {
return GovernorSettings.votingDelay();
}
function proposalThreshold() public view virtual override(Governor, GovernorSettings) returns (uint256) {
return GovernorSettings.proposalThreshold();
}
}