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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
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Add history support to state index #540

Closed sideninja closed 2 months ago

sideninja commented 2 months ago

Description

This PR adds support for querying historic state from the local state index.

For contributor use:

Summary by CodeRabbit

coderabbitai[bot] commented 2 months ago

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Walkthrough

The pull request introduces significant changes across multiple files, primarily enhancing the Bootstrap struct with a new State field for state management. It includes the addition of new methods for state indexing, renaming existing fields for consistency, and implementing a state engine for blockchain transaction management. New functions for receipt comparison and transaction execution are also introduced, alongside a robust testing framework to validate these functionalities. Overall, the modifications focus on improving code clarity, functionality, and reliability.

Changes

File Path Change Summary
bootstrap/bootstrap.go Added State field to Bootstrap, introduced StartStateIndex and StopStateIndex methods, and renamed existing fields for consistency.
models/receipt.go Added EqualReceipts function for comparing geth and custom Receipt types, and imported the bytes package.
models/transaction.go Reformatted NewReceipt function call for improved readability.
services/state/engine.go Introduced Engine struct with methods for managing blockchain transactions, including NewStateEngine, Notify, Run, and others.
services/state/state.go Defined State struct with methods for transaction execution, including NewState and Execute.
storage/pebble/register.go Added Register type with methods for managing ledger entries, including NewRegister, GetValue, SetValue, and others.
storage/pebble/register_test.go Created unit tests for Register functionality to validate setting and retrieving values.
tests/helpers.go Enhanced startEmulator function with SkipTransactionValidation field and reformatted evmSign function parameters for clarity.
tests/state_integration_test.go Introduced integration test for state execution focusing on transfer operations, including balance checks and transaction processing validation.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant Bootstrap
    participant StateEngine
    participant State

    Client->>Bootstrap: Initialize
    Bootstrap->>StateEngine: StartStateIndex()
    StateEngine->>State: NewState()
    State->>StateEngine: Ready
    Bootstrap->>Client: Ready

🐰 In the code we hop and play,
New fields and methods lead the way.
With states and receipts, all in line,
Our code now sparkles, oh so fine!
Testing and structure, a joyful dance,
In the land of logic, we take a chance!
🐇✨

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