// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity >=0.6.11; import {Router} from "./Router.sol"; import {StandardHookMetadata} from "../hooks/libs/StandardHookMetadata.sol"; abstract contract GasRouter is Router { // ============ Mutable Storage ============ mapping(uint32 => uint256) public destinationGas; struct GasRouterConfig { uint32 domain; uint256 gas; } constructor(address _mailbox) Router(_mailbox) {} /** * @notice Sets the gas amount dispatched for each configured domain. * @param gasConfigs The array of GasRouterConfig structs */ function setDestinationGas( GasRouterConfig[] calldata gasConfigs ) external onlyOwner { for (uint256 i = 0; i < gasConfigs.length; i += 1) { _setDestinationGas(gasConfigs[i].domain, gasConfigs[i].gas); } } /** * @notice Sets the gas amount dispatched for each configured domain. * @param domain The destination domain ID * @param gas The gas limit */ function setDestinationGas(uint32 domain, uint256 gas) external onlyOwner { _setDestinationGas(domain, gas); } /** * @notice Returns the gas payment required to dispatch a message to the given domain's router. * @param _destinationDomain The domain of the router. * @return _gasPayment Payment computed by the registered InterchainGasPaymaster. */ function quoteGasPayment( uint32 _destinationDomain ) external view returns (uint256 _gasPayment) { return _quoteDispatch(_destinationDomain, ""); } function _metadata( uint32 _destination ) internal view virtual override returns (bytes memory) { return StandardHookMetadata.overrideGasLimit(destinationGas[_destination]); } function _setDestinationGas(uint32 domain, uint256 gas) internal { destinationGas[domain] = gas; } }