打点统计——2（批量生成随机日志样本）

run.go:

package main

import (
	"./uas"
	"flag"
	"math/rand"
	"net/url"
	"os"
	"strconv"
	"strings"
	"time"
)

type resource struct {
	url		string
	target	string
	start	int
	end		int
}

func ruleResource() []resource{
	var res []resource
	//首页
	r1 := resource{
		url: "http://localhost/",
		target: "",
		start: 0,
		end: 0,
	}
	//列表页
	r2 := resource{
		url: "http://localhost/list/{$id}.html",
		target: "{$id}",
		start: 1,
		end: 21,
	}
	//详情页
	r3 := resource{
		url: "http://localhost/movie/{$id}.html",
		target: "{$id}",
		start: 1,
		end: 12924,
	}
	res = append(res, r1, r2, r3)
	return res
}

func buildUrl(res []resource) []string {
	var list []string

	for _, resItem := range res {
		if len(resItem.target) == 0 {
			list = append(list, resItem.url)
		}else {
			for i := resItem.start; i <= resItem.end; i++ {
				urlStr := strings.Replace(resItem.url, resItem.target, strconv.Itoa(i), -1)
				list = append(list, urlStr)
			}
		}
	}

	return list
}

func makeLog(current, refer, ua string) string {
	u := url.Values{}
	u.Set("time", "1")
	u.Set("url", current)
	u.Set("refer", refer)
	u.Set("ua", ua)
	paramsStr := u.Encode()
	logTemplate := "127.0.0.1 - - [14/Apr/2019:20:07:42 +0800] \"OPTIONS /dig?{$paramsStr} HTTP/1.1\" 499 0 \"-\" \"{$ua}\" \"-\""
	log := strings.Replace(logTemplate, "{$paramsStr}", paramsStr, -1)
	log = strings.Replace(log, "{$ua}", ua, -1)
	return log
}

//随机
func randInt(min, max int) int {
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	if min > max {
		return max
	}
	return r.Intn(max-min) + min
}

func main() {

	total := flag.Int("total", 100, "创建多少行日志")
	filePath := flag.String("filePath", "F:/phpStudy/PHPTutorial/nginx/logs/access.log", "日志文件路径")
	//想生效还要调用解析方法
	flag.Parse()
	//fmt.Println(*total, *filePath)

	//构造出真实的网站url集合
	res := ruleResource()
	list := buildUrl(res)

	//按照要求，生成$total行日志内容
	logStr := ""
	for i := 1; i <= *total; i++ {
		//随机选
		currentUrl := list[randInt(0, len(list)-1)]
		referUrl := list[randInt(0, len(list)-1)]
		ua := uas.UaList[randInt(0, len(uas.UaList)-1)]
		logStr = logStr + makeLog(currentUrl, referUrl, ua) + "\n"
		//和随机种子一样的间隔，尽可能保证随机性
		time.Sleep(time.Nanosecond)
	}
	//放到循环外一次写入
	fd, _ := os.OpenFile(*filePath, os.O_RDWR|os.O_APPEND, 0644 )
	fd.Write([]byte(logStr))
	fd.Close()
}

uas.go(各种浏览器信息):

package uas

var UaList = []string {
	"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36",
	"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
	"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0;",
	" Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv,2.0.1) Gecko/20100101 Firefox/4.0.1",
	"Mozilla/5.0 (Windows NT 6.1; rv,2.0.1) Gecko/20100101 Firefox/4.0.1",
	"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 UBrowser/6.2.4094.1 Safari/537.36",
	"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
	"Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5",
	" Opera/9.80 (Android 2.3.4; Linux; Opera Mobi/build-1107180945; U; en-GB) Presto/2.8.149 Version/11.10",
}

运行程序（随机生成10000条日志）：

go run run.go --total=10000 --filePath="F:/phpStudy/PHPTutorial/nginx/logs/access.log"