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Foundry Multichain

This repo provides an example of a multichain Solidity Deployment/Upgredability script pattern. It can also be applicable for non-upgradable contracts (remove UUPSProxy)

  • It uses CREATE2 to deploy Counter with UUPSProxy to multiple chains using a single Solidity script.

  • CREATE2 is used to preserve proxy addresses across multiple chains.

  • Likewise, it uses a single Solidity script to upgrade contracts on multiple chains.

Scripts are located at the script directory:

  • BaseDeployer.s.sol: Provides a base to the deploymeny & upgradability scripts. It includes all chains with their respective RPC urls (from foundry.toml)
  • Counter.s.sol: Counter deployment script
  • CounterUpgrade.s.sol: Counter upgreade script

Minimal set of tests are located at the tests directory.

Before running anything, make sure your .env variables are set. You can use .env-example as a template

Things you can learn & get inspiration

  • Multichain CREATE2 deploymnent
  • UUPS proxy setup and initialization
  • Multichain upgrades through UUPS proxy (preserving proxy address)
  • Upgradability tests

Running Tests

To build & run tests, run the following command

  forge test -vvvv

Examples

Deploy to testnets

  • deployCounterTestnet(uint256 _counterSalt, uint256 _counterProxySalt)
forge script DeployCounter -s "deployCounterTestnet(uint256, uint256)" 5 6 --force --multi
  • add --broadcast --verify to broadcast to network and verify contracts

Deploy to selected chains

  • deployCounterSelectedChains(uint256 _counterSalt, uint256 _counterProxySalt, Chains[] calldata deployForks, Cycle cycle)
forge script DeployCounter -s "deployCounterSelectedChains(uint256, uint256, uint8[] calldata, uint8)" 154 155 "[3,4,5,6]" 1 --force --multi
  • add --broadcast --verify to broadcast to network and verify contracts

Upgrade on testnets

  • upgradeTestnet()
forge script UpgradeCounter -s "upgradeTestnet()" --force --multi
  • add --broadcast --verify to broadcast to network and verify contracts

Upgrade on selected chains

  • upgradeSelectedChains(Chains[] calldata upgradeForks, Cycle cycle)
forge script UpgradeCounter -s "upgradeSelectedChains(uint8[] calldata, uint8)" "[3]" 1 --force --multi
  • add --broadcast --verify to broadcast to network and verify contracts

Acknowledgements

License

MIT