dione/eth-contracts/contracts/OracleEmitter.sol

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// SPDX-License-Identifier: MIT
pragma solidity >=0.4.21 <0.7.0;
contract OracleEmitter {
uint256 requestCounter;
event NewOracleRequest(
string requestType,
address callbackAddress,
bytes4 callbackMethodID,
uint256 requestID
);
function requestOracles(string memory requestType, address callbackAddress, bytes4 callbackMethodID) public returns (uint256) {
requestCounter++;
emit NewOracleRequest(requestType, callbackAddress, callbackMethodID, requestCounter);
return requestCounter;
}
}