coderabbitai[bot]
commented
1 month ago Walkthrough
This pull request introduces significant enhancements to the handling of ERC20 token deposits and cross-domain messaging within the Ethereum ecosystem. Key changes include the addition of new data structures for managing token transfers, modifications to the stack configuration for improved modularity, and updates to testing frameworks to ensure comprehensive coverage of both ETH and ERC20 transactions. The integration of new functions for parsing cross-domain messages and minting tokens further strengthens the interoperability between Ethereum and Cosmos.
Changes
| File Path | Change Summary |
|---|---|
| bindings/erc20_deposit_args.go | Added RelayMessageArgs and FinalizeBridgeERC20Args structures for managing Ethereum transactions and ERC20 token deposits. |
| e2e/stack.go | Modified StackConfig to include L1Deployments, OptimismPortal, and L1StandardBridge. Updated run method to instantiate L1StandardBridge. |
| e2e/stack_test.go | Renamed rollupFlow to ethRollupFlow and added erc20RollupFlow for ERC20 token deposits. Enhanced ETH deposit handling and logging. |
| testutils/utils.go | Introduced GenerateERC20DepositTx function for creating ERC20 deposit transactions. |
| x/rollup/keeper/deposits.go | Added parseAndExecuteCrossDomainMessage for handling cross-domain messages and mintERC20 for minting tokens. Improved error handling in mintETH. |
| x/rollup/tests/integration/rollup_test.go | Enhanced tests to cover ERC20 deposits, refactored balance querying functions, and verified user balances after deposits. |
| x/rollup/types/events.go | Added constants AttributeKeyERC20Address and EventTypeMintERC20 for ERC20 event handling. |
Assessment against linked issues
| Objective | Addressed | Explanation |
|---|---|---|
| Support depositing ERC-20 tokens to monomer based L2s (#210) | ✅ |
Possibly related PRs
- #208: Refactor L1 user deposit processing in x/rollup module, relevant to the
FinalizeBridgeERC20Argsstructure introduced in the main PR, as both deal with processing Ethereum transactions and deposits. - #192: Add e2e test case to check for monomer rollbacks, includes changes to
e2e/stack.go, which may interact with the new data structures for ERC20 transactions introduced in the main PR.
Poem
In the meadow where tokens play,
A rabbit hops, brightening the day.
With ERC20s now in tow,
Cross-domain magic starts to flow.
Hops and jumps, oh what a sight,
In the world of DeFi, all feels right! 🐇✨
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natebeauregard
Adds support for ERC-20 deposits by parsing the deposit tx data. ERC-20 tokens are minted on L2 in the
erc20/{L1 ERC-20 address}format.Safeguards are in place to ensure that the deposit tx originated from the L1CrossDomainMessenger so that users can't forge tx data to mint unlimited ERC-20 tokens.
x/rollupintegration tests and e2e tests with ERC-20 deposits were added to verify the deposit was successful.This is an initial increment to get a functional implementation for ERC-20 deposits. Future work to either add a genesis state to
x/rollupto contain theL1CrossDomainMessengeraddress or to extract the ERC-20 deposit logic to a new cosmos module will be done in a future increment.Closes https://github.com/polymerdao/monomer/issues/210
Summary by CodeRabbit
New Features
Bug Fixes