Hi!
Happy to introduce new functionality in suave-geth to emit onchain events generated during the offchain computations on the Kettle.
Before, emit events like this were not possible with Suave:
contract MySuapp {
function onchain() public {
}
event OffchainEvent();
function offchain() public returns (bytes memory) {
emit OffchainEvent();
returns abi.encodeWithSelector(this.onchain.selector);
}
}
Though the code is valid Solidity, emit OffchainEvent() was a nil operation, until now.
We added support to send back to the onchain execution the logs emitted offchain. The Suapp requires minimal changes to support this feature since most of the logic is handled by suave-std:
**import "suave-std/Suapp.sol";**
contract MySuapp **is Suapp** {
function onchain() **emitOffchainLogs** public {
}
event OffchainEvent();
function offchain() public returns (bytes memory) {
emit OffchainEvent();
returns abi.encodeWithSelector(this.onchain.selector);
}
}
You can find a complete example in the suapp-examples repository.
There are still some open questions like how do you make sure certain confidential information cannot ever be leaked out with this framework.
Looking forward to receiving your feedback on this.