Creating upgradeable contracts from Solidity, is it mandatory to use App.sol?

abcoathup · August 21, 2020, 12:36am

If you want to deploy via Truffle or Buidler, then I would recommend using the Upgrades plugins.

If you want to deploy upgradeable contracts using Solidity then I recommend inheriting from ProxyFactory. You just need to pass in your implementation address, your admin address (could be a ProxyAdmin if you wanted) and any initialization.

github.com

OpenZeppelin/openzeppelin-sdk/blob/v2.8.2/packages/lib/contracts/upgradeability/ProxyFactory.sol#L37


      
            }
            
            emit ProxyCreated(address(proxy));
          
            if(_data.length > 0) {
              (bool success,) = proxy.call(_data);
              require(success);
            }    
          }
          
          function deploy(uint256 _salt, address _logic, address _admin, bytes memory _data) public returns (address) {
            return _deployProxy(_salt, _logic, _admin, _data, msg.sender);
          }
          
          function deploySigned(uint256 _salt, address _logic, address _admin, bytes memory _data, bytes memory _signature) public returns (address) {
            address signer = getSigner(_salt, _logic, _admin, _data, _signature);
            require(signer != address(0), "Invalid signature");
            return _deployProxy(_salt, _logic, _admin, _data, signer);
          }
          
          function getDeploymentAddress(uint256 _salt, address _sender) public view returns (address) {

To upgrade proxy contracts you do need to upgrade each contract individually. So you would need to keep a list either on or off chain if you wanted to upgrade multiple contracts.

If you want to upgrade all the upgradeable contracts in one go, you could look at a different upgrade pattern.

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Creating upgradeable contracts from Solidity, is it mandatory to use App.sol?

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