github.com/diadata-org/diadata@v1.4.593/pkg/dia/scraper/blockchain-scrapers/blockchains/ethereum/diaWowOracleService/DIAWowOracle.sol (about)

     1  pragma solidity 0.7.4;
     2  
     3  contract DIAWowOracle {
     4      mapping (string => uint256) public values;
     5      address oracleUpdater;
     6      
     7      event OracleUpdate(string key, uint128 value, uint128 timestamp);
     8      event UpdaterAddressChange(address newUpdater);
     9      
    10      constructor() {
    11          oracleUpdater = msg.sender;
    12      }
    13      
    14      function setValue(string memory key, uint128 value, uint128 timestamp) public {
    15          require(msg.sender == oracleUpdater);
    16          uint256 cValue = (((uint256)(value)) << 128) + timestamp;
    17          values[key] = cValue;
    18          emit OracleUpdate(key, value, timestamp);
    19      }
    20      
    21      function getValue(string memory key) public view returns (uint128, uint128) {
    22          uint256 cValue = values[key];
    23          uint128 timestamp = (uint128)(cValue % 2**128);
    24          uint128 value = (uint128)(cValue >> 128);
    25          return (value, timestamp);
    26      }
    27      
    28      function updateOracleUpdaterAddress(address newOracleUpdaterAddress) public {
    29          require(msg.sender == oracleUpdater);
    30          oracleUpdater = newOracleUpdaterAddress;
    31          emit UpdaterAddressChange(newOracleUpdaterAddress);
    32      }
    33  }