solidity/test/compilationTests/gnosis/Oracles/SignedMessageOracleFactory.sol
2018-10-24 14:52:55 +02:00

32 lines
1.1 KiB
Solidity

pragma solidity >=0.0;
import "../Oracles/SignedMessageOracle.sol";
/// @title Signed message oracle factory contract - Allows to create signed message oracle contracts
/// @author Stefan George - <stefan@gnosis.pm>
contract SignedMessageOracleFactory {
/*
* Events
*/
event SignedMessageOracleCreation(address indexed creator, SignedMessageOracle signedMessageOracle, address oracle);
/*
* Public functions
*/
/// @dev Creates a new signed message oracle contract
/// @param descriptionHash Hash identifying off chain event description
/// @param v Signature parameter
/// @param r Signature parameter
/// @param s Signature parameter
/// @return Oracle contract
function createSignedMessageOracle(bytes32 descriptionHash, uint8 v, bytes32 r, bytes32 s)
public
returns (SignedMessageOracle signedMessageOracle)
{
signedMessageOracle = new SignedMessageOracle(descriptionHash, v, r, s);
address oracle = ecrecover(descriptionHash, v, r, s);
emit SignedMessageOracleCreation(msg.sender, signedMessageOracle, oracle);
}
}