package main

import (
	"context"
	"git.gqnotes.com/guoqiang/grpcexercises/calculator/pb"
	"io"
	"log"
)

// Sum 计算和-客户端流式
func Sum(client pb.CalculateServiceClient) {
	// 构造一个切片
	nums := []int64{1, 2, 3, 4, 5}

	stream, err := client.Sum(context.Background())

	if err != nil {
		log.Fatalf("failed to call: %v", err)
		return
	}

	// 发送数据
	for i := 0; i < len(nums); i++ {
		err = stream.Send(&pb.SumRequest{
			Num: nums[i],
		})

		if err == io.EOF {
			break
		}

		if err != nil {
			log.Fatalf("failed to send: %v", err)
			return
		}
	}

	// 接收数据
	resp, err := stream.CloseAndRecv()

	if err != nil {
		log.Fatalf("failed to recv: %v", err)
	}

	log.Printf("nums:%+v\tresp:%+v\n", nums, resp)
}