OracleInterfaces.sol

OracleInterfaces.sol

interface Oracle {
    function isResultSetFor(uint256 id) external view returns (bool isSet);
    function resultFor(uint256 id) external view returns (bytes32 result);
}

// Optional, OraclePrimary must implement Oracle
interface OraclePrimary {
    event ResultSet(bytes32 _result, uint256 _id);
}

interface DataFeedOracle {
    function isResultSetFor(uint256 id, uint256 date) external view returns (bool isSet);
    function doesNonceExistFor(uint256 id, uint256 nonce) external view returns (bool exists);
    function resultByDateFor(uint256 id, uint256 date) external view returns (bytes32 result, uint256 nonce);
    function resultByNonceFor(uint256 id, uint256 nonce) external view returns (bytes32 result, uint256 date);
    function lastUpdated(uint256 id) external view returns (uint256 date, uint256 nonce);
}

// Optional, DataFeedOraclePrimary must implement DataFeedOracle
interface DataFeedOraclePrimary {
    event ResultSet(bytes32 _result, uint256 date, uint256 nonce, uint256 _id);
}

// Optional, TypedOracle must implement Oracle or DataFeedOracle
interface TypedOracle {
    // returns 0: bytes32, 1: bool, 2: uint256, 3: int256
    function dataType(uint256 _id) external view returns (uint8 typeEnum);
}