hello-go/grpc-demo/clientImpl/example_client.go

package clientImpl

import (
	"../example"
	"context"
	"google.golang.org/grpc"
	"time"
)

func Call(c example.FormatDataClient, input string) (string, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()
	r, err := c.DoFormat(ctx, &example.Data{Text: input})
	if err != nil {
		println("could not greet", err.Error())
		return "", err
	}
	return r.Text, nil
}

func MakeCalls(cc *grpc.ClientConn, n int) {
	hwc := example.NewFormatDataClient(cc)
	for i := 0; i < n; i++ {
		r, err := Call(hwc, "this is load balancing example")
		if nil == err {
			println(r)
		}
	}
}