From f4e8f206a6760bdc31734dfcb1c65916b5b76311 Mon Sep 17 00:00:00 2001
From: liuxiaolong <736321739@qq.com>
Date: 星期四, 22 八月 2019 12:05:58 +0800
Subject: [PATCH] add cluster
---
extend/util/util.go | 162 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 161 insertions(+), 1 deletions(-)
diff --git a/extend/util/util.go b/extend/util/util.go
index b9af7da..8f7883c 100644
--- a/extend/util/util.go
+++ b/extend/util/util.go
@@ -1,9 +1,18 @@
package util
import (
+ "basic.com/pubsub/protomsg.git"
+ "bytes"
"encoding/json"
+ "errors"
"github.com/gin-gonic/gin"
"github.com/golang/glog"
+ "github.com/pierrec/lz4"
+ "gocv.io/x/gocv"
+ "image"
+ "net"
+ "os/exec"
+ "strconv"
"webserver/extend/code"
"crypto/rand"
@@ -66,4 +75,155 @@
// data[t.Field(i).Name] = v.Field(i).Interface()
//}
//return data
-}
\ No newline at end of file
+}
+
+// 鎸夊昂瀵稿幓鍒囧浘
+func SubImg(i protomsg.Image, x0, y0, x1, y1 int, ) []byte {
+ img, _ := gocv.NewMatFromBytes(int(i.Height), int(i.Width), gocv.MatTypeCV8UC3, i.Data)
+ rect := image.Rect(EnlargeSize(x0, y0, x1, y1, i))
+ region := img.Region(rect)
+ bytes, _ := gocv.IMEncode(".jpg", region)
+ return bytes
+}
+
+// 闀垮鍙樹负涓�姣斾竴锛屾瘡杈瑰悇鎵╃櫨鍒嗕箣20
+func EnlargeSize(x0, y0, x1, y1 int, i protomsg.Image) (x0_new, y0_new, x1_new, y1_new int) {
+ // 鍏堟妸闀垮鍙樹负涓�姣斾竴
+ chazhi := (y1 - y0) - (x1 - x0)
+ x0 = x0 - chazhi/2
+ if x0 < 0 {
+ x0 = 0
+ }
+ x1 = x1 + chazhi/2
+ if x1 > int(i.Width) {
+ x1 = int(i.Width)
+ }
+
+ // 鍐嶆妸姣忚竟鍚勬墿澶х櫨鍒嗕箣20
+ enlarge := float32(0.2)
+ x0_new = int((1+enlarge)*float32(x0) - enlarge*float32(x1))
+ if x0_new < 0 {
+ x0_new = 0
+ }
+ x1_new = int((1+enlarge)*float32(x1) - enlarge*float32(x0))
+ if x1_new > int(i.Width) {
+ x1_new = int(i.Width)
+ }
+ y0_new = int((1+enlarge)*float32(y0) - enlarge*float32(y1))
+ if y0_new < 0 {
+ y0_new = 0
+ }
+ y1_new = int((1+enlarge)*float32(y1) - enlarge*float32(y0))
+ if y1_new > int(i.Height) {
+ y1_new = int(i.Height)
+ }
+ return
+}
+
+
+// 鑾峰彇鏈満缃戝崱IP
+func GetLocalIP(networkName string) (ipv4 string,mask string, err error) {
+ interfaces, err := net.Interfaces()
+ if err != nil {
+ return "","", err
+ }
+
+ for _, i := range interfaces {
+ byName, err := net.InterfaceByName(i.Name)
+ if err != nil {
+ return "","", err
+ }
+ addresses, err := byName.Addrs()
+ for _, v := range addresses {
+ if ipnet, ok:=v.(*net.IPNet);ok && !ipnet.IP.IsLoopback(){
+ if ipnet.IP.To4() !=nil{
+ if byName.Name == networkName{
+ maskStr := ipnet.Mask.String()
+ mask64, _ := strconv.ParseUint(maskStr, 16, 32)
+ return ipnet.IP.String(),IpIntToString(int(mask64)),nil
+ }
+ }
+ }
+ }
+ }
+ return "","", errors.New("ipv4 not found")
+}
+
+func GetDefaultRoute(networkName string)(route string,err error){
+ cmdStr := fmt.Sprintf("route | grep -P \"^default.*%s$\" | awk '{print $2}'",networkName)
+ cmd := exec.Command("/bin/sh","-c",cmdStr)
+ b, err := cmd.Output()
+ if err!=nil{
+ return "",err
+ }
+ return string(b),nil
+
+}
+
+func StringIpToInt(ipstring string) int {
+ ipSegs := strings.Split(ipstring, ".")
+ var ipInt int = 0
+ var pos uint = 24
+ for _, ipSeg := range ipSegs {
+ tempInt, _ := strconv.Atoi(ipSeg)
+ tempInt = tempInt << pos
+ ipInt = ipInt | tempInt
+ pos -= 8
+ }
+ return ipInt
+}
+
+func IpIntToString(ipInt int) string{
+ ipSegs := make([]string, 4)
+ var len int = len(ipSegs)
+ buffer := bytes.NewBufferString("")
+ for i := 0; i < len; i++ {
+ tempInt := ipInt & 0xFF
+ ipSegs[len-i-1] = strconv.Itoa(tempInt)
+
+ ipInt = ipInt >> 8
+ }
+ for i := 0; i < len; i++ {
+ buffer.WriteString(ipSegs[i])
+ if i < len-1 {
+ buffer.WriteString(".")
+ }
+ }
+ return buffer.String()
+}
+
+func ParseScore(compareScore float32) float32 {
+ if compareScore < 1 {
+ compareScore = compareScore * 100
+ }
+ f, _ := strconv.ParseFloat(fmt.Sprintf("%2.2f", compareScore), 32)
+ return float32(f)
+}
+
+// UnCompress uncompress
+func UnCompress(in []byte) ([]byte, error) {
+ out := make([]byte, 10*len(in))
+ n, err := lz4.UncompressBlock(in, out)
+ if err != nil {
+ fmt.Println(err)
+ return nil, err
+ }
+ out = out[:n] // uncompressed data
+ return out, nil
+}
+
+// Compress compress
+func Compress(in []byte) ([]byte, error) {
+ out := make([]byte, len(in))
+ ht := make([]int, 64<<10) // buffer for the compression table
+ n, err := lz4.CompressBlock(in, out, ht)
+ if err != nil {
+ fmt.Println(err)
+ return nil, err
+ }
+ if n >= len(in) {
+ fmt.Println("image is not compressible")
+ }
+ out = out[:n] // compressed data
+ return out, nil
+}
--
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