ess-etl-go/benchmark/go/main.go

package main

import (
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
	"strings"
	"sync"
	"time"

	"gitea.urkob.com/urko/ess-etl-go/pkg/crono"
)

func main() {
	log.SetFlags(log.Lmicroseconds)
	logFileName := fmt.Sprintf("%s.txt", time.Now().Format(strings.ReplaceAll(time.RFC1123Z, ":", "_")))
	f, err := os.OpenFile(logFileName, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0o644)
	if err != nil {
		log.Fatal(err)
	}

	defer f.Close()
	log.SetOutput(f)

	cr := crono.New()
	defer cr.Table()
	host := "http://127.0.0.1:45654"

	wg := &sync.WaitGroup{}
	errChan := make(chan error, 1)
	wg.Add(1)
	go func(errChan chan error) {
		defer wg.Done()
		for i := 0; i < 1000; i++ {
			wg.Add(1)
			go doRequest(wg, host, "975135", errChan)
		}
	}(errChan)

	wg.Wait()
	cr.MarkAndRestart("finish handle all response")
}

func doRequest(wg *sync.WaitGroup, host, employeeID string, errChan chan error) error {
	defer wg.Done()
	url := host + "/employee_wi/" + employeeID
	client := &http.Client{}
	req, err := http.NewRequest("GET", url, nil)

	if err != nil {
		err = fmt.Errorf("http.NewRequest: %s", err)
		errChan <- err
		return err
	}
	req.Header.Add("Cache-Control", "no-cache")
	req.Header.Add("Content-Type", "application/json")

	res, err := client.Do(req)
	if err != nil {
		err = fmt.Errorf("client.Do: %s", err)
		errChan <- err
		return err
	}
	defer res.Body.Close()

	readedBody, err := io.ReadAll(res.Body)
	if err != nil {
		err = fmt.Errorf("ioutil.ReadAll: %s", err)
		errChan <- err
		return err
	}

	log.Println("readed", string(readedBody))

	return nil
}