/
test.go
141 lines (116 loc) · 3.15 KB
/
test.go
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package main
import (
"bufio"
"encoding/json"
"fmt"
"os"
"reflect"
"strconv"
)
// import (
// "github.com/marpaia/graphite-golang"
// )
// LogData - вертикальное хранение всех данных из лога
type LogData struct {
Size int
Request []string `logfield:"request"`
StatusRaw []string `logfield:"status"`
UpstreamAddr []string `logfield:"upstream_addr"`
Status []int `logresize:"true"`
StatusXX []string `logresize:"true"`
Service []string `logresize:"true"`
}
const (
filename = "sample.log"
)
func readLines(filename string) [][]byte {
var res [][]byte
f, _ := os.Open(filename)
defer f.Close()
scanner := bufio.NewScanner(f)
scanner.Split(bufio.ScanLines)
for scanner.Scan() {
bb := scanner.Bytes()
newBb := make([]byte, len(bb))
copy(newBb, bb)
res = append(res, newBb)
}
return res
}
// Магия, через reflect и таги "logfield"/"logresize" выставить все поля структуры LogData в
// соответствующие значения из json-лога
func parseJSONLines(lines [][]byte, res interface{}) {
resType := reflect.TypeOf(res).Elem()
resValue := reflect.ValueOf(res).Elem()
for i := 0; i < resType.NumField(); i++ {
field := resValue.Field(i)
fieldType := resType.Field(i)
fieldTag := fieldType.Tag
if fieldTag.Get("logfield") != "" || fieldTag.Get("logresize") != "" {
field.Set(reflect.MakeSlice(fieldType.Type, len(lines), len(lines)))
}
}
resValue.FieldByName("Size").Set(reflect.ValueOf(len(lines)))
for lineno, l := range lines {
var ll map[string]string
err := json.Unmarshal(l, &ll)
if err == nil {
for i := 0; i < resType.NumField(); i++ {
field := resValue.Field(i)
fieldTag := resType.Field(i).Tag.Get("logfield")
if fieldTag != "" {
valueFromJSON := reflect.ValueOf(ll[fieldTag])
field.Index(lineno).Set(valueFromJSON)
}
}
} else {
fmt.Printf("err: %v; %s\n", err, l)
}
}
}
func countGroups(input []string) map[string]int {
res := make(map[string]int)
for _, i := range input {
res[i]++
}
return res
}
func main() {
rawLines := readLines(filename)
var logData LogData
parseJSONLines(rawLines, &logData)
for i := 0; i < logData.Size; i++ {
var status int
status, _ = strconv.Atoi(logData.StatusRaw[i])
logData.Status[i] = status
var service string
upstreamAddr := logData.UpstreamAddr[i]
if upstreamAddr == "-" {
service = "static"
} else if upstreamAddr == "127.0.0.1:4091" {
service = "backend"
} else if upstreamAddr == "127.0.0.1:4092" {
service = "screenshoter"
} else if upstreamAddr == "127.0.0.1:9000" {
service = "frontend"
}
logData.Service[i] = service
var statusXX string
if status >= 100 && status < 200 {
statusXX = "1xx"
} else if status >= 200 && status < 300 {
statusXX = "2xx"
} else if status >= 300 && status < 400 {
statusXX = "3xx"
} else if status >= 400 && status < 500 {
statusXX = "4xx"
} else if status >= 500 && status < 600 {
statusXX = "5xx"
} else {
statusXX = "-"
}
logData.StatusXX[i] = statusXX
}
fmt.Println(countGroups(logData.Service))
fmt.Println(countGroups(logData.StatusXX))
}