/**
服务治理 服务提供者端代理工具
代为注册服务，维护服务生命周期
*/
package main

import (
	"app.yhyue.com/BP/servicerd/proto"
	"context"
	"flag"
	"fmt"
	"google.golang.org/grpc"
	"log"
	"os"
	"os/signal"
	"time"
)

var (
	rd_server       = flag.String("rd", "192.168.3.240:10021", "服务治理中心地址")
	service_name    = flag.String("sn", "ocr", "服务名称")
	service_ip      = flag.String("ip", "192.168.20.100", "服务提供者IP")
	service_port    = flag.Int("port", 25400, "服务提供者端口")
	service_workers = flag.Int("wks", 5, "服务提供者支持并发数")
)

var meta *proto.ServiceMeta

func init() {
	flag.Parse()
	meta = &proto.ServiceMeta{
		Name:    *service_name,
		Ip:      *service_ip,
		Port:    int32(*service_port),
		Balance: 0,
		Workers: int32(*service_workers),
	}
}

//
func heartbeat() {
	conn, err := grpc.Dial(*rd_server, grpc.WithInsecure())
	if err != nil {
		return
	}
	defer conn.Close()
	client := proto.NewHeartBeatClient(conn)
	//调用服务端推送流
	resp, _ := client.PutStream(context.Background())
	tm := time.NewTicker(20 * time.Second)
	for {
		select {
		case <-tm.C:
			reqstreamData := &proto.StreamReqData{ServiceName: *service_name, ServiceAddr: fmt.Sprintf("%s:%d", *service_ip, *service_port)}
			_ = resp.Send(reqstreamData)
		}
	}
}

//服务注册
func registe() {
	conn, err := grpc.Dial(*rd_server, grpc.WithInsecure())
	if err != nil {
		return
	}
	defer conn.Close()
	client := proto.NewServiceClient(conn)
	ret, err := client.Registe(context.TODO(), meta)
	if err != nil {
		log.Println(err.Error())
	} else {
		log.Println(ret)
	}

}

//服务注销
func destory() {
	conn, err := grpc.Dial(*rd_server, grpc.WithInsecure())
	if err != nil {
		return
	}
	defer conn.Close()
	client := proto.NewServiceClient(conn)
	ret, err := client.Destory(context.TODO(), meta)
	if err != nil {
		log.Println(err.Error())
	} else {
		log.Println(ret)
	}
}

func main() {
	go heartbeat() //心跳
	registe()
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, os.Kill)
	<-c
	log.Println("服务注销")
	destory()
}