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feat(utils/3rdparty/nginx_log_generator): Add kscarlett/nginx-log-gen…
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136 changes: 136 additions & 0 deletions
136
utils/3rdparty/nginx_log_generator/nginx_log_generator.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| package nginx_log_generator | ||
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| // https: //github.com/kscarlett/nginx-log-generator | ||
| // https://github.com/ondrejsika-inspiration/nginx-log-generator | ||
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| import ( | ||
| "fmt" | ||
| "strings" | ||
| "time" | ||
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| "github.com/brianvoe/gofakeit/v6" | ||
| "github.com/caarlos0/env/v6" | ||
| ) | ||
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| type config struct { | ||
| Rate float32 `env:"RATE" envDefault:"1"` | ||
| IPv4Percent int `env:"IPV4_PERCENT" envDefault:"100"` | ||
| StatusOkPercent int `env:"STATUS_OK_PERCENT" envDefault:"80"` | ||
| PathMinLength int `env:"PATH_MIN" envDefault:"1"` | ||
| PathMaxLength int `env:"PATH_MAX" envDefault:"5"` | ||
| PercentageGet int `env:"GET_PERCENT" envDefault:"60"` | ||
| PercentagePost int `env:"POST_PERCENT" envDefault:"30"` | ||
| PercentagePut int `env:"PUT_PERCENT" envDefault:"0"` | ||
| PercentagePatch int `env:"PATCH_PERCENT" envDefault:"0"` | ||
| PercentageDelete int `env:"DELETE_PERCENT" envDefault:"0"` | ||
| } | ||
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| func NginxLogGenerator() { | ||
| cfg := config{} | ||
| if err := env.Parse(&cfg); err != nil { | ||
| panic(err) | ||
| } | ||
| checkMinMax(&cfg.PathMinLength, &cfg.PathMaxLength) | ||
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| ticker := time.NewTicker(time.Second / time.Duration(cfg.Rate)) | ||
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| gofakeit.Seed(time.Now().UnixNano()) | ||
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| var ip, httpMethod, path, httpVersion, referrer, userAgent string | ||
| var statusCode, bodyBytesSent int | ||
| var timeLocal time.Time | ||
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| httpVersion = "HTTP/1.1" | ||
| referrer = "-" | ||
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| for range ticker.C { | ||
| timeLocal = time.Now() | ||
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| ip = weightedIPVersion(cfg.IPv4Percent) | ||
| httpMethod = weightedHTTPMethod(cfg.PercentageGet, cfg.PercentagePost, cfg.PercentagePut, cfg.PercentagePatch, cfg.PercentageDelete) | ||
| path = randomPath(cfg.PathMinLength, cfg.PathMaxLength) | ||
| statusCode = weightedStatusCode(cfg.StatusOkPercent) | ||
| bodyBytesSent = realisticBytesSent(statusCode) | ||
| userAgent = gofakeit.UserAgent() | ||
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| fmt.Printf("%s - - [%s] \"%s %s %s\" %v %v \"%s\" \"%s\"\n", ip, timeLocal.Format("02/Jan/2006:15:04:05 -0700"), httpMethod, path, httpVersion, statusCode, bodyBytesSent, referrer, userAgent) | ||
| } | ||
| } | ||
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| func realisticBytesSent(statusCode int) int { | ||
| if statusCode != 200 { | ||
| return gofakeit.Number(30, 120) | ||
| } | ||
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| return gofakeit.Number(800, 3100) | ||
| } | ||
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| func weightedStatusCode(percentageOk int) int { | ||
| roll := gofakeit.Number(0, 100) | ||
| if roll <= percentageOk { | ||
| return 200 | ||
| } | ||
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| return gofakeit.HTTPStatusCodeSimple() | ||
| } | ||
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| func weightedHTTPMethod(percentageGet, percentagePost, percentagePut, percentagePatch, percentageDelete int) string { | ||
| if percentageGet+percentagePost >= 100 { | ||
| panic("HTTP method percentages add up to more than 100%") | ||
| } | ||
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| roll := gofakeit.Number(0, 100) | ||
| if roll <= percentageGet { | ||
| return "GET" | ||
| } else if roll <= percentagePost { | ||
| return "POST" | ||
| } else if roll <= percentagePut { | ||
| return "PUT" | ||
| } else if roll <= percentagePatch { | ||
| return "PATCH" | ||
| } else if roll <= percentageDelete { | ||
| return "DELETE" | ||
| } | ||
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| return gofakeit.HTTPMethod() | ||
| } | ||
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| func weightedIPVersion(percentageIPv4 int) string { | ||
| roll := gofakeit.Number(0, 100) | ||
| if roll <= percentageIPv4 { | ||
| return gofakeit.IPv4Address() | ||
| } else { | ||
| return gofakeit.IPv6Address() | ||
| } | ||
| } | ||
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| func randomPath(min, max int) string { | ||
| var path strings.Builder | ||
| length := gofakeit.Number(min, max) | ||
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| path.WriteString("/") | ||
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| for i := 0; i < length; i++ { | ||
| if i > 0 { | ||
| path.WriteString(gofakeit.RandomString([]string{"-", "-", "_", "%20", "/", "/", "/"})) | ||
| } | ||
| path.WriteString(gofakeit.BuzzWord()) | ||
| } | ||
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| path.WriteString(gofakeit.RandomString([]string{".hmtl", ".php", ".htm", ".jpg", ".png", ".gif", ".svg", ".css", ".js"})) | ||
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| result := path.String() | ||
| return strings.Replace(result, " ", "%20", -1) | ||
| } | ||
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| func checkMinMax(min, max *int) { | ||
| if *min < 1 { | ||
| *min = 1 | ||
| } | ||
| if *max < 1 { | ||
| *max = 1 | ||
| } | ||
| if *min > *max { | ||
| *min, *max = *max, *min | ||
| } | ||
| } |