Golang桥接模块解耦与桥接模式实例

package main

import "fmt"

// 实现接口：通知发送方式
type Sender interface {
    Send(message string) string
}

// 邮件发送实现
type EmailSender struct{}

func (e *EmailSender) Send(message string) string {
    return "Email sent: " + message
}

// 短信发送实现
type SMSSender struct{}

func (s *SMSSender) Send(message string) string {
    return "SMS sent: " + message
}

// 抽象：通知类型
type Notifier struct {
    sender Sender  // 桥接实现
}

func (n *Notifier) Notify(message string) string {
    return n.sender.Send(message)
}

// 扩展抽象：紧急通知
type UrgentNotifier struct {
    sender Sender
}

func (u *UrgentNotifier) Notify(message string) string {
    return u.sender.Send("[Urgent] " + message)
}

func main() {
    email := &EmailSender{}
    sms := &SMSSender{}

    normalEmail := &Notifier{sender: email}
    urgentSMS := &UrgentNotifier{sender: sms}

    fmt.Println(normalEmail.Notify("System update"))
    // 输出：Email sent: System update

    fmt.Println(urgentSMS.Notify("Server down!"))
    // 输出：SMS sent: [Urgent] Server down!
}