DesignPattern/13.ProxyPattern/2.Code/ProxyPattern.h

#ifndef __FLYPATTERN_PATTERN_H__
#define __FLYPATTERN_PATTERN_H__

#include <mutex>
#include <time.h>
using namespace std;

// 抽象主题角色
class Subject
{
public:
	Subject(){}
	virtual ~Subject(){}
	virtual void method() = 0;
};

// 真实主题角色
class RealSubject :public Subject
{
public:
	RealSubject(){}
	virtual ~RealSubject(){}
	void method(){
		printf("调用业务方法\n");
	}
};

// Log类
class Log
{
public:
	Log(){}
	string getTime(){
		time_t t = time(NULL);
		char ch[64] = { 0 };
		//年-月-日 时:分:秒
		strftime(ch, sizeof(ch)-1, "%Y-%m-%d %H:%M:%S", localtime(&t));     
		return ch;
	}
};

// 代理类
class Proxy:public Subject
{
public:
	Proxy(){
		realSubject = new RealSubject();
		log = new Log();
	}
	Proxy(const Proxy& o) = delete;
	Proxy& operator=(const Proxy&) = delete;
	~Proxy(){
		delete realSubject;
		delete log;
		realSubject = nullptr;
		log = nullptr;
	}
	void preCallMethod(){
		printf("方法method()被调用，调用时间为%s\n",log->getTime().c_str());
	}
	void method(){
		preCallMethod();
		realSubject->method();
		postCallMethod();
	}
	void postCallMethod(){
		printf("方法method()调用调用成功!\n");
	}
private:
	RealSubject *realSubject;
	Log* log;
};

#endif //__FLYPATTERN_PATTERN_H__