hyperlane-monorepo/solidity/contracts/interfaces/IMailboxV3.sol

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.8.0;

import {IInterchainSecurityModule} from "./IInterchainSecurityModule.sol";
import {IPostDispatchHook} from "./hooks/IPostDispatchHook.sol";

interface IMailboxV3 {
    // ============ Events ============
    /**
     * @notice Emitted when a new message is dispatched via Hyperlane
     * @param message Raw bytes of message
     */
    event Dispatch(bytes message);

    /**
     * @notice Emitted when a new message is dispatched via Hyperlane
     * @param messageId The unique message identifier
     */
    event DispatchId(bytes32 indexed messageId);

    /**
     * @notice Emitted when a Hyperlane message is delivered
     * @param message Raw bytes of message
     */
    event Process(bytes message);

    /**
     * @notice Emitted when a Hyperlane message is processed
     * @param messageId The unique message identifier
     */
    event ProcessId(bytes32 indexed messageId);

    function localDomain() external view returns (uint32);

    function delivered(bytes32 messageId) external view returns (bool);

    function defaultIsm() external view returns (IInterchainSecurityModule);

    function defaultHook() external view returns (IPostDispatchHook);

    function dispatch(
        uint32 _destinationDomain,
        bytes32 _recipientAddress,
        bytes calldata _messageBody
    ) external payable returns (bytes32);

    function process(bytes calldata _metadata, bytes calldata _message)
        external
        payable;

    function recipientIsm(address _recipient)
        external
        view
        returns (IInterchainSecurityModule);
}