<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>cn.how2j.trend</groupId>
        <artifactId>trendParentProject</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>trend-trading-backtest-service</artifactId>

    <dependencies>
        <!-- springboot web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- eureka-client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!-- feign -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <!-- 断路器 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
    </dependencies>

</project>

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
spring:
  application:
    name:  trend-trading-backtest-service

feign.hystrix.enabled: true

package cn.how2j.trend.pojo;

public class IndexData {

	String date;
	float closePoint;
	public String getDate() {
		return date;
	}
	public void setDate(String date) {
		this.date = date;
	}
	public float getClosePoint() {
		return closePoint;
	}
	public void setClosePoint(float closePoint) {
		this.closePoint = closePoint;
	}
	
}

package cn.how2j.trend.client;

import java.util.List;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;

import cn.how2j.trend.pojo.IndexData;

@FeignClient(value = "INDEX-DATA-SERVICE",fallback = IndexDataClientFeignHystrix.class)
public interface IndexDataClient {
    @GetMapping("/data/{code}")
    public List<IndexData> getIndexData(@PathVariable("code") String code);
}

package cn.how2j.trend.client;

import java.util.List;

import org.springframework.stereotype.Component;

import cn.how2j.trend.pojo.IndexData;
import cn.hutool.core.collection.CollectionUtil;

@Component
public class IndexDataClientFeignHystrix implements IndexDataClient {

	@Override
	public List<IndexData> getIndexData(String code) {
		IndexData indexData = new IndexData();
		indexData.setClosePoint(0);
		indexData.setDate("0000-00-00");
		return CollectionUtil.toList(indexData);
	}

}

package cn.how2j.trend.service;

import cn.how2j.trend.client.IndexDataClient;
import cn.how2j.trend.pojo.IndexData;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Collections;
import java.util.List;

@Service
public class BackTestService {
	@Autowired IndexDataClient indexDataClient;
	
	public List<IndexData> listIndexData(String code){
		List<IndexData> result = indexDataClient.getIndexData(code);
		Collections.reverse(result);
		
		for (IndexData indexData : result) {
			System.out.println(indexData.getDate());
		}
		
		return result;
	}
}

package cn.how2j.trend.web;

import cn.how2j.trend.pojo.IndexData;
import cn.how2j.trend.service.BackTestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
@RestController
public class BackTestController {
	@Autowired BackTestService backTestService;

	@GetMapping("/simulate/{code}")
	@CrossOrigin
	public Map<String,Object> backTest(@PathVariable("code") String code) throws Exception {
		List<IndexData> allIndexDatas = backTestService.listIndexData(code);
		Map<String,Object> result = new HashMap<>();
		result.put("indexDatas", allIndexDatas);
		return result;
	}
}

package cn.how2j.trend;

import cn.hutool.core.convert.Convert;
import cn.hutool.core.thread.ThreadUtil;
import cn.hutool.core.util.NetUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

@SpringBootApplication
@EnableEurekaClient
@EnableDiscoveryClient
@EnableFeignClients
public class TrendTradingBackTestServiceApplication {

    public static void main(String[] args) {
        int port = 0;
        int defaultPort = 8051;
        int eurekaServerPort = 8761;

        if(NetUtil.isUsableLocalPort(eurekaServerPort)) {
            System.err.printf("检查到端口%d 未启用，判断 eureka 服务器没有启动，本服务无法使用，故退出%n", eurekaServerPort );
            System.exit(1);
        }

        if(null!=args && 0!=args.length) {
            for (String arg : args) {
                if(arg.startsWith("port=")) {
                    String strPort= StrUtil.subAfter(arg, "port=", true);
                    if(NumberUtil.isNumber(strPort)) {
                        port = Convert.toInt(strPort);
                    }
                }
            }
        }

        if(0==port) {
            Future<Integer> future = ThreadUtil.execAsync(() ->{
                int p = 0;
                System.out.printf("请于5秒钟内输入端口号, 推荐  %d ,超过5秒将默认使用 %d ",defaultPort,defaultPort);
                Scanner scanner = new Scanner(System.in);
                while(true) {
                    String strPort = scanner.nextLine();
                    if(!NumberUtil.isInteger(strPort)) {
                        System.err.println("只能是数字");
                        continue;
                    }
                    else {
                        p = Convert.toInt(strPort);
                        scanner.close();
                        break;
                    }
                }
                return p;
            });
            try{
                port=future.get(5,TimeUnit.SECONDS);
            }
            catch (InterruptedException | ExecutionException | TimeoutException e){
                port = defaultPort;
            }
        }

        if(!NetUtil.isUsableLocalPort(port)) {
            System.err.printf("端口%d被占用了，无法启动%n", port );
            System.exit(1);
        }
        new SpringApplicationBuilder(TrendTradingBackTestServiceApplication.class).properties("server.port=" + port).run(args);

    }
}