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23 lines
515 B
23 lines
515 B
pragma solidity >=0.4.21 <0.8.0;
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contract Migrations {
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address public owner;
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uint public last_completed_migration;
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constructor() public {
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owner = msg.sender;
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}
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modifier restricted() {
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if (msg.sender == owner) _;
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}
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function setCompleted(uint completed) public restricted {
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last_completed_migration = completed;
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}
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function upgrade(address new_address) public restricted {
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Migrations upgraded = Migrations(new_address);
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upgraded.setCompleted(last_completed_migration);
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}
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}
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