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AsterizmDemo.sol
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AsterizmDemo.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
import "asterizmprotocol/contracts/evm/AsterizmClient.sol";
contract AsterizmDemo is AsterizmClient {
event SetExternalChainMessageEvent(string message);
string public currentChainMessage;
string public externalChainMessage;
constructor (IInitializerSender _initializerLib) AsterizmClient(_initializerLib, true, false) {
currentChainMessage = "Hello from source chain";
externalChainMessage = "Here is nothing yet";
}
/// Set external chain message
/// @param _message string Message
function setExternalChainMessage(string memory _message) internal {
externalChainMessage = _message;
emit SetExternalChainMessageEvent(_message);
}
/// Send message
/// @param _dstChainId uint64 Destination chain ID
/// @param _message string Message
function sendMessage(uint64 _dstChainId, string calldata _message) public payable {
_initAsterizmTransferEvent(_dstChainId, abi.encode(_message));
}
/// Receive non-encoded payload
/// @param _dto ClAsterizmReceiveRequestDto Method DTO
function _asterizmReceive(ClAsterizmReceiveRequestDto memory _dto) internal override {
setExternalChainMessage(abi.decode(_dto.payload, (string)));
}
/// Build packed payload (abi.encodePacked() result)
/// @param _payload bytes Default payload (abi.encode() result)
/// @return bytes Packed payload (abi.encodePacked() result)
function _buildPackedPayload(bytes memory _payload) internal pure override returns(bytes memory) {
(string memory message) = abi.decode(_payload, (string));
return abi.encodePacked(message);
}
}