如何使用 Go 构建模块化（插件）应用程序

// 主应用程序 (main.go)
package main

import (
    "fmt"
    "net"
    "net/rpc"
    "os"
)

type PluginService struct{}

func (p *PluginService) Echo(request string, reply *string) error {
    fmt.Println("Received request:", request)
    *reply = "Echo: " + request
    return nil
}

func main() {
    // 创建 Unix socket
    listener, err := net.Listen("unix", "/tmp/plugin.sock")
    if err != nil {
        fmt.Println("Listen error:", err)
        os.Exit(1)
    }
    defer listener.Close()

    // 注册 RPC 服务
    rpc.Register(new(PluginService))

    // 接受连接
    for {
        conn, err := listener.Accept()
        if err != nil {
            fmt.Println("Accept error:", err)
            continue
        }
        go rpc.ServeConn(conn)
    }
}

// 插件 (plugin.go)
package main

import (
    "fmt"
    "net/rpc"
    "os"
)

func main() {
    // 连接到 Unix socket
    client, err := rpc.Dial("unix", "/tmp/plugin.sock")
    if err != nil {
        fmt.Println("Dial error:", err)
        os.Exit(1)
    }
    defer client.Close()

    // 调用 RPC 方法
    var reply string
    err = client.Call("PluginService.Echo", "Hello from plugin!", &reply)
    if err != nil {
        fmt.Println("Call error:", err)
        os.Exit(1)
    }

    fmt.Println("Received reply:", reply)
}