gin一、初體驗

1、我的實驗代碼

package main

import (
	"errors"
	"fmt"
	"io"
	"log"
	"net/http"
	"os"
	"runtime"
	"time"

	"github.com/gin-gonic/gin"
)

type myStruct struct {  伊頓
	Name string
	Age  string
}

func main() {

	runtime.GOMAXPROCS(runtime.NumCPU())

	// 引擎設置
	router := gin.Default()
	gin.SetMode(gin.DebugMode)
	gin.DisableConsoleColor()

	// 寫文件
	f, _ := os.Create(time.Now().Format("2006_01_02") + ".log")
	defer f.Close()
	gin.DefaultWriter = io.MultiWriter(f, os.Stdout)

	// 中間件
	router.Use(gin.LoggerWithWriter(f, ""))
	router.Use(func(c *gin.Context) {
		log.Println(">>>>>>>> 進入 >>>>>>>>") // 請求
		c.Next()                            // next handler func
		log.Println(">>>>>>>> 退出 >>>>>>>>") // 響應
	})

	// 調試
	if gin.IsDebugging() {
		fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> the framework is running in debug mode")
	}

	// 路由分組
	v1 := router.Group("/v1")
	v1.Use(func(c *gin.Context) {
		fmt.Printf(">>>>>>>> FullPath = %s\n", c.FullPath())
		fmt.Println(">>>>>>>> v1 group middleware ") // 添加中間件到組

		if c.FullPath() == "/v1/" {
			c.Abort() // 阻斷調用鏈
		}
	})
	{
		v1.GET("/", XiaoKouTian, HelloWorld) // 調用鏈測試
		v1.GET("/user/:name/*action", Pong)
		v1.GET("/welcome", Welcome)
		v1.POST("/json", JSON)
		v1.POST("/formpost", Post)
		v1.POST("/getpost", GetPost)
		v1.POST("/map", Map)
		v1.POST("/upload", Upload)
		v1.POST("/multiupload", MultiUpload)

	}

	s := &http.Server{
		Addr:           ":8000",
		Handler:        router,
		ReadTimeout:    1 * time.Second,
		WriteTimeout:   1 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	if err := s.ListenAndServe(); err != nil {
		log.Fatalln(err)
	}
}

// Upload 上傳文件
//  curl -X POST http://127.0.0.1:8000/v1/multiupload -F "upload[]=@./ping.txt" -F "upload[]=@./pong.txt" -H "Content-Type: multipart/form-data"
func Upload(c *gin.Context) {
	file, _ := c.FormFile("file")
	log.Println(file.Filename)

	c.String(http.StatusOK, fmt.Sprintf("'%s' uploaded!", file.Filename))
}

// MultiUpload 上傳多個文件
// curl -X POST http://127.0.0.1:8000/v1/upload -F "upload[]=@/Users/appleboy/ping.txt" -F "upload[]=@/Users/appleboy/pong.txt"   -H "Content-Type: multipart/form-data"
func MultiUpload(c *gin.Context) {
	form, _ := c.MultipartForm()
	files := form.File["upload[]"]

	for _, file := range files {
		log.Println(file.Filename)

		// Upload the file to specific dst.
		// c.SaveUploadedFile(file, dst)
	}
	c.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files)))
}

// Map map作爲get和post參數
// curl -XPOST http://127.0.0.1:8000/v1/map?ids[a]=1234\&ids[b]=hello -d "names[first]=thinkerou\&names[second]=tianou"
func Map(c *gin.Context) {
	ids := c.QueryMap("ids")
	names := c.PostFormMap("names")
	fmt.Printf("\nids: %v; names: %v\n\n", ids, names)

	c.JSON(http.StatusOK, gin.H{
		"a": ids["a"],
		"b": ids["b"],
	})
}

// XiaoKouTian 設置元數據
func XiaoKouTian(c *gin.Context) {

	c.Set("user", "wuxian") // 元數據管理
	c.Set("passwd", "123")

	now := time.Now().Format("2006-01-02 15:04:05")
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> 我是小口天呀！"+now)
}

// HelloWorld 讀元數據 + 寫日誌
// curl -XGET http://127.0.0.1:8000/v1/
func HelloWorld(c *gin.Context) {
	fmt.Println(" >>>>>>>> helloworld!>>>>>>>>>>")
	value1, ok1 := c.Get("user") // 元數據管理
	if ok1 {
		fmt.Fprintf(gin.DefaultWriter, ">>>>>>>> 賬號 = %s\n", value1)
	}

	value2, ok2 := c.Get("passwd")
	if ok2 {
		fmt.Fprintf(gin.DefaultWriter, ">>>>>>>> 密碼 = %s\n", value2)
	}

	now := time.Now().Format("2006-01-02 15:04:05")
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> 我正在調試，勿擾! "+now)
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> "+c.ClientIP())
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> "+gin.Mode())
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> "+gin.EnvGinMode)
	fmt.Fprintln(gin.DefaultWriter, ">>>>>>>> "+gin.Version)

	c.String(http.StatusOK, "Hello World")
}

// Pong 路由參數
// curl -XGET http://127.0.0.1:8000/v1/user/wuxian/me
func Pong(c *gin.Context) {
	name := c.Param("name")
	action := c.Param("action")

	message := name + " is " + action
	c.String(http.StatusOK, "%s", message)
}

// Welcome 請求參數
// curl -XGET http://127.0.0.1:8000/v1/welcome?firstname=wu\&lastname=xian
func Welcome(c *gin.Context) {
	fmt.Fprintf(gin.DefaultWriter, ">>>>>>>> %s\n", c.FullPath())

	firstname := c.Query("firstname")
	lastname := c.Query("lastname")
	c.String(http.StatusOK, "%s %s", firstname, lastname)
}

// JSON 響應json
// curl -XPOST http://127.0.0.1:8000/v1/json -H "Content-Type:application/json" -d '{"name":"wuxian", "age":"111"}'
func JSON(c *gin.Context) {
	var buf myStruct
	if err := c.BindJSON(&buf); err != nil {
		c.AbortWithError(300, errors.New("json格式不對"))   
	}

	c.JSON(http.StatusOK, myStruct{    
		Name: "wuxian",
		Age:  "18",
	})
}

// Post POST方法
// curl -XPOST http://127.0.0.1:8000/v1/formpost -d "name=wuxian&age=20"
func Post(c *gin.Context) {
	name := c.PostForm("name")
	age := c.PostForm("age")

	c.JSON(http.StatusOK, gin.H{
		"name": name,
		"age":  age,
	})
}

// GetPost URL參數 + body
// curl -XPOST http://127.0.0.1:8000/v1/getpost?name=wuxian\&age=20 -d "sex=male"
func GetPost(c *gin.Context) {
	name := c.Query("name")
	age := c.Query("age")
	sex := c.PostForm("sex")

	c.JSON(http.StatusOK, gin.H{
		"name": name,
		"age":  age,
		"sex":  sex,
	})
}

2、wrt壓力測試

// GET
wrk -t12 -c100 -d30s --latency http://192.168.100.35:8000/v1/

// POST
wrk -t4 -c2000 -d60s --script=post.lua --latency http://192.168.100.35:8000/v1/formpost

wrk.method = "POST"
wrk.headers["Content-Type"] = "application/x-www-form-urlencoded"
wrk.body = "name=wuxian&age=20"

3、ab壓力測試 webbench

ab -c 10 -n 100 http://esc.engma.net/#/?_k=3dpswa

4、http_load壓力測試

./http_load -p 1021 -s 10 ./urls

3、webbench壓力測試

3、技術資料參考

• HTTP壓測工具之wrk
• wrk 壓力測試 http benchmark POST接口