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onflow / flow-evm-gateway

FlowEVM Gateway implements an Ethereum-equivalent JSON-RPC API for EVM clients to use
https://developers.flow.com/evm/about
Apache License 2.0
11 stars 10 forks source link

Check data integrity for EVM events #529

Closed m-Peter closed 2 months ago

m-Peter commented 2 months ago

Description

For contributor use:

Summary by CodeRabbit

coderabbitai[bot] commented 2 months ago

Walkthrough

The changes involve significant modifications to event decoding, testing, and block event handling processes within the codebase. Enhancements include improved validation of EVM block events, the introduction of new test cases for handling missing transactions, and refinements in the construction of blocks and transactions to ensure accurate data representation. Additionally, new error handling mechanisms and improved accessibility of mock client functions have been implemented.

Changes

Files Change Summary
models/events.go Enhanced decodeCadenceEvents function with validation for EVM block events, ensuring all transactions are accounted for.
models/events_test.go Added TestCadenceEvents_Block to validate behavior with missing transactions; renamed hashes to txHashes for clarity.
services/ingestion/engine_test.go Modified newBlock to compute TransactionHashRoot and updated newTransaction to decode hex strings into transaction objects.
services/ingestion/subscriber.go Added fetchBlockEvents method to RPCSubscriber for improved block event handling and error management.
services/ingestion/subscriber_test.go Introduced tests for subscription behavior with error handling and retry logic.
services/testutils/mock_client.go Renamed function fields in MockClient to uppercase for export, enhancing accessibility from outside the package.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant EventDecoder
    participant TransactionManager
    participant BlockManager
    participant RPCSubscriber

    User->>EventDecoder: Trigger event decoding
    EventDecoder->>BlockManager: Validate block and transactions
    BlockManager->>TransactionManager: Retrieve transaction hashes
    TransactionManager-->>BlockManager: Return transaction hashes
    BlockManager-->>EventDecoder: Validate transaction hash root
    EventDecoder-->>User: Return decoded events or error

    User->>RPCSubscriber: Request block events
    RPCSubscriber->>BlockManager: Fetch block events
    BlockManager-->>RPCSubscriber: Return block events or error
    RPCSubscriber-->>User: Provide block events or error message

🐰 In the meadow, hops a little hare,
With changes made, there's joy to share!
Blocks and transactions, all in a row,
Validations strong, watch them glow!
A test for each hop, a dance so bright,
Celebrating code, oh what a delight! 🌼

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