github.com/shyftnetwork/go-empyrean@v1.8.3-0.20191127201940-fbfca9338f04/shyft-config/shyft-cli/web3/transfer-through-master/contracts/Migrations.sol (about)

     1  pragma solidity ^0.4.23;
     2  
     3  contract Migrations {
     4    address public owner;
     5    uint public last_completed_migration;
     6  
     7    function Migrations() public {
     8      owner = msg.sender;
     9    }
    10  
    11    modifier restricted() {
    12      if (msg.sender == owner) _;
    13    }
    14  
    15    function setCompleted(uint completed) public restricted {
    16      last_completed_migration = completed;
    17    }
    18  
    19    function upgrade(address new_address) public restricted {
    20      Migrations upgraded = Migrations(new_address);
    21      upgraded.setCompleted(last_completed_migration);
    22    }
    23  }