Moby项目源码剖析 - 整体架构概述

graph TB
    subgraph "客户端层"
        CLI[Docker CLI]
        Client[Client SDK]
        API_Client[Third-party Clients]
    end
    
    subgraph "API网关层"
        HTTP_Server[HTTP API Server]
        Router[Router Layer]
        Middleware[Middleware Stack]
    end
    
    subgraph "核心业务层"
        Daemon[Docker Daemon]
        Container_Mgr[Container Manager]
        Image_Mgr[Image Manager]
        Network_Mgr[Network Manager]
        Volume_Mgr[Volume Manager]
        Plugin_Mgr[Plugin Manager]
    end
    
    subgraph "存储层"
        GraphDriver[Graph Driver]
        Registry[Registry Client]
        Metadata[Metadata Store]
    end
    
    subgraph "运行时层"
        Containerd[Containerd]
        RunC[RunC]
        OCI[OCI Runtime]
    end
    
    subgraph "系统层"
        Linux_Kernel[Linux Kernel]
        Namespaces[Namespaces]
        Cgroups[Cgroups]
        Network[Network Stack]
    end
    
    CLI --> HTTP_Server
    Client --> HTTP_Server
    API_Client --> HTTP_Server
    
    HTTP_Server --> Router
    Router --> Middleware
    Middleware --> Daemon
    
    Daemon --> Container_Mgr
    Daemon --> Image_Mgr
    Daemon --> Network_Mgr
    Daemon --> Volume_Mgr
    Daemon --> Plugin_Mgr
    
    Container_Mgr --> GraphDriver
    Image_Mgr --> Registry
    Container_Mgr --> Metadata
    
    Container_Mgr --> Containerd
    Containerd --> RunC
    RunC --> OCI
    
    OCI --> Linux_Kernel
    Linux_Kernel --> Namespaces
    Linux_Kernel --> Cgroups
    Linux_Kernel --> Network

moby/
├── api/                    # API定义和类型
├── client/                 # 客户端库
├── cmd/                    # 可执行文件入口
│   ├── dockerd/           # Docker守护进程
│   └── docker-proxy/      # Docker网络代理
├── daemon/                 # 守护进程核心逻辑
│   ├── server/            # HTTP服务器
│   ├── container/         # 容器管理
│   ├── images/            # 镜像管理
│   ├── network/           # 网络管理
│   ├── volume/            # 存储卷管理
│   ├── libnetwork/        # 网络库
│   └── ...
├── pkg/                   # 通用工具包
├── internal/              # 内部工具包
├── integration/           # 集成测试
└── vendor/                # 第三方依赖

sequenceDiagram
    participant Main as main()
    participant CLI as daemonCLI
    participant Daemon as Docker Daemon
    participant Server as API Server
    participant Router as Router
    participant Backend as Backends
    
    Main->>CLI: 创建DaemonRunner
    CLI->>CLI: 解析配置参数
    CLI->>Daemon: 创建Daemon实例
    Daemon->>Backend: 初始化各种后端服务
    Backend-->>Daemon: 后端服务初始化完成
    CLI->>Server: 创建API服务器
    Server->>Router: 注册路由处理器
    Router-->>Server: 路由注册完成
    CLI->>Server: 启动HTTP服务器
    Server-->>CLI: 服务器启动完成
    CLI-->>Main: 守护进程启动完成
    
    Note over Main,Backend: 系统进入运行状态，等待API请求

sequenceDiagram
    participant Client as Docker Client
    participant Server as HTTP Server
    participant Router as Router
    participant Middleware as Middleware
    participant Handler as Route Handler
    participant Backend as Backend Service
    participant Daemon as Daemon
    
    Client->>Server: HTTP API 请求
    Server->>Router: 路由匹配
    Router->>Middleware: 中间件处理链
    Middleware->>Middleware: 认证/授权/日志等
    Middleware->>Handler: 调用路由处理器
    Handler->>Backend: 调用后端服务
    Backend->>Daemon: 调用守护进程API
    Daemon->>Daemon: 执行具体业务逻辑
    Daemon-->>Backend: 返回执行结果
    Backend-->>Handler: 返回处理结果
    Handler-->>Middleware: 返回HTTP响应
    Middleware-->>Router: 返回响应
    Router-->>Server: 返回响应
    Server-->>Client: HTTP响应