Architecture

graph LR
    subgraph Test Environment
        TestClient[Test Client]
        MockExecutor[Mock Executor]
    end

    subgraph Execution Client
        EngineAPIExecutionClient
        subgraph Client Components
            EthClient[Eth Client]
            JsonRpcClient[JSON-RPC Client]
        end
    end

    subgraph Execution Layer
        Reth[Reth Node]
        subgraph Reth APIs
            EngineAPI[Engine API]
            JsonRPC[JSON-RPC API]
        end
    end

    %% Test Environment Connections
    TestClient -->|uses| EngineAPIExecutionClient
    JsonRpcClient -->|test mode| MockExecutor

    %% Execution Client Connections
    EngineAPIExecutionClient -->|eth calls| EthClient
    EngineAPIExecutionClient -->|engine calls| JsonRpcClient
    EthClient -->|eth/net/web3| JsonRPC
    JsonRpcClient -->|engine api| EngineAPI

    %% Reth Internal Connections
    JsonRPC -->|internal| Reth
    EngineAPI -->|internal| Reth

    %% Styling
    classDef primary fill:#f9f,stroke:#333,stroke-width:2px
    classDef secondary fill:#bbf,stroke:#333,stroke-width:1px
    class EngineAPIExecutionClient primary
    class EthClient,JsonRpcClient,MockExecutor,EngineAPI,JsonRPC secondary

Loading

The architecture consists of several key components:

1. Execution Client

   • EngineAPIExecutionClient: Main client interface that implements the Execute interface
   • EthClient: Handles standard Ethereum JSON-RPC calls
   • JsonRpcClient: Handles Engine API calls

2. Execution Layer

   • Reth Node: Ethereum execution client
   • Exposes Engine API and standard JSON-RPC endpoints

3. Test Environment

   • Test Client: Integration tests
   • Mock Executor: Simulates execution behavior for unit tests

Development

cd docker
docker compose up -d
docker compose down