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41 lines
845 B
Go
41 lines
845 B
Go
/**
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* @Author:zhoutao
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* @Date:2020/12/11 下午2:03
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* @Desc:
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*/
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package proxy
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//代理模式：用于延迟处理操作或者进行实际操作前后进行其他处理
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//代理模式的常见用法：虚代理、COW代理、远程代理、保护代理、Cache代理、防火墙代理、同步代理、智能指引等
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type Subject interface {
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Do() string
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}
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type RealSubject struct {
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}
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func (RealSubject) Do() string {
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return "going to do something"
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}
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type Proxy struct {
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real RealSubject
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}
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func (p Proxy) Do() string {
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var res string
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//在调用想要做的工作之前，做一些事情，如检查缓存、判断权限、实例化真实对象等
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res += "pre to do :"
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//实际要做的事情
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res += p.real.Do()
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//调用之后执行的操作，如缓存结果，对结果进行处理等
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res += ": after to do"
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return res
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}
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