mirror of
https://github.com/TeaOSLab/EdgeNode.git
synced 2025-11-07 02:20:25 +08:00
62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package utils
|
||
|
||
import (
|
||
"fmt"
|
||
"github.com/TeaOSLab/EdgeNode/internal/ttlcache"
|
||
"github.com/cespare/xxhash"
|
||
"github.com/iwind/TeaGo/types"
|
||
"regexp"
|
||
"strconv"
|
||
"time"
|
||
)
|
||
|
||
//var grid = grids.NewGrid(32, grids.NewLimitCountOpt(1000_0000))
|
||
var cache = ttlcache.NewCache()
|
||
|
||
// 正则表达式匹配字符串，并缓存结果
|
||
func MatchStringCache(regex *regexp.Regexp, s string) bool {
|
||
// 如果长度超过4096，大概率是不能重用的
|
||
if len(s) > 4096 {
|
||
return regex.MatchString(s)
|
||
}
|
||
|
||
hash := xxhash.Sum64String(s)
|
||
key := fmt.Sprintf("%p_", regex) + strconv.FormatUint(hash, 10)
|
||
item := cache.Read(key)
|
||
if item != nil {
|
||
return types.Int8(item.Value) == 1
|
||
}
|
||
b := regex.MatchString(s)
|
||
if b {
|
||
cache.Write(key, 1, time.Now().Unix()+1800)
|
||
} else {
|
||
cache.Write(key, 0, time.Now().Unix()+1800)
|
||
}
|
||
return b
|
||
}
|
||
|
||
// 正则表达式匹配字节slice，并缓存结果
|
||
func MatchBytesCache(regex *regexp.Regexp, byteSlice []byte) bool {
|
||
// 如果长度超过4096，大概率是不能重用的
|
||
if len(byteSlice) > 4096 {
|
||
return regex.Match(byteSlice)
|
||
}
|
||
|
||
hash := xxhash.Sum64(byteSlice)
|
||
key := fmt.Sprintf("%p_", regex) + strconv.FormatUint(hash, 10)
|
||
item := cache.Read(key)
|
||
if item != nil {
|
||
return types.Int8(item.Value) == 1
|
||
}
|
||
if item != nil {
|
||
return types.Int8(item.Value) == 1
|
||
}
|
||
b := regex.Match(byteSlice)
|
||
if b {
|
||
cache.Write(key, 1, time.Now().Unix()+1800)
|
||
} else {
|
||
cache.Write(key, 0, time.Now().Unix()+1800)
|
||
}
|
||
return b
|
||
}
|