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SSU Fuel Monitor

Resource Harvesting

An SSU (Smart Storage Unit) extension that tracks fuel consumption, emits alerts when fuel drops below a configurable threshold, and logs refueling events. Useful for monitoring remote deployments.

ssufuelmonitoringalerts

ssu-fuel-monitor.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/**
 * @title SSUFuelMonitor
 * @notice Monitors fuel levels on a Smart Storage Unit and emits
 *         low-fuel alerts when the level drops below a threshold.
 */
contract SSUFuelMonitor {
    address public owner;
    uint256 public fuelLevel;
    uint256 public alertThreshold;
    uint256 public totalConsumed;

    event FuelAdded(uint256 amount, uint256 newLevel);
    event FuelConsumed(uint256 amount, uint256 remaining);
    event LowFuelAlert(uint256 remaining, uint256 threshold);

    constructor(uint256 _alertThreshold) {
        owner = msg.sender;
        alertThreshold = _alertThreshold;
        fuelLevel = 0;
        totalConsumed = 0;
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Not owner");
        _;
    }

    function addFuel(uint256 _amount) external onlyOwner {
        require(_amount > 0, "Amount must be positive");
        fuelLevel += _amount;
        emit FuelAdded(_amount, fuelLevel);
    }

    function consumeFuel(uint256 _amount) external onlyOwner {
        require(_amount <= fuelLevel, "Insufficient fuel");
        fuelLevel -= _amount;
        totalConsumed += _amount;
        emit FuelConsumed(_amount, fuelLevel);

        if (fuelLevel <= alertThreshold) {
            emit LowFuelAlert(fuelLevel, alertThreshold);
        }
    }

    function setAlertThreshold(uint256 _threshold) external onlyOwner {
        alertThreshold = _threshold;
    }

    function getFuelStatus()
        external
        view
        returns (uint256 current, uint256 threshold, uint256 consumed)
    {
        return (fuelLevel, alertThreshold, totalConsumed);
    }
}