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util.go
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util.go
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package util
import (
"encoding/base64"
"goflow/model"
"log"
"sync"
"github.com/sony/sonyflake"
"gorm.io/gorm"
)
type Config struct {
Port string
Dsn string
}
var Conf = Config{}
var Db *gorm.DB
var processMap sync.Map
var flake=sonyflake.NewSonyflake(sonyflake.Settings{})
func NextId() string {
id, err := flake.NextID()
if err!=nil{
log.Println(err.Error())
}
//convert id to byte
idByte := make([]byte, 8)
for i := 0; i < 8; i++ {
idByte[i] = byte(id >> uint(i*8))
}
//base64 encode
return base64.URLEncoding.EncodeToString([]byte(idByte))
}
func GetProcess(id string) *model.Process {
if v, ok := processMap.Load(id); ok {
return v.(*model.Process)
}
return nil
}
func PutProcess(id string, process *model.Process) {
processMap.Store(id, process)
}
func IsStringIn(target string, str_array []string) bool {
for _, element := range str_array {
if target == element {
return true
}
}
return false
}
func GetIndex(num int64) (res []int) {
if num <= 1 {
res = append(res, 0)
return
}
if num%2 != 0 {
res = append(res, 0)
num--
}
// now num is even
for num != 0 {
var minus int64
var i int64 = 2
exp := 0
for ; i <= num; i *= 2 {
minus = i
exp++
}
res = append(res, exp)
num -= minus
}
return
}
func GetIntValue(num int) (res []int) {
if num <= 1 {
res = append(res, 1)
return
}
if num%2 != 0 {
res = append(res, 1)
num--
}
// now num is even
for num != 0 {
minus := 0
for i := 2; i <= num; i *= 2 {
minus = i
}
res = append(res, minus)
num -= minus
}
return
}