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@@ -2,78 +2,104 @@ package redis |
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import (
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"fmt"
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"github.com/astaxie/beego"
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"github.com/gomodule/redigo/redis"
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"gitlab.fjmaimaimai.com/mmm-go/gocomm/pkg/log"
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"sync"
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"time"
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)
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type Mutex struct {
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conn redis.Conn
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timeOut int64
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resource string
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lock bool
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conn redis.Conn
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timeOut int64
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resource string
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lock bool
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closeOnce sync.Once
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}
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//NewMutex create new mutex
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func NewMutex(source string)*Mutex{
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func NewMutex(source string) *Mutex {
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return &Mutex{
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resource:source,
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lock:false,
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timeOut:SECOND*5,//未执行完,已经超时 超时时间设大
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resource: source,
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lock: false,
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timeOut: SECOND * 5, //未执行完,已经超时 超时时间设大
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}
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}
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func (l *Mutex)Key()string{
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return fmt.Sprintf("reidslock:%s",l.resource)
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func (l *Mutex) Key() string {
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return fmt.Sprintf("reidslock:%s", l.resource)
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}
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func(l *Mutex)Conn()redis.Conn{
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func (l *Mutex) Conn() redis.Conn {
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return l.conn
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}
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//设置超时
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func (l *Mutex)TimeOut(t int64)*Mutex{
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func (l *Mutex) TimeOut(t int64) *Mutex {
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l.timeOut = t
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return l
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}
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//加锁
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//true:加锁成功 false:加锁失败
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func (l *Mutex)Lock()( bool){
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defer func(){
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if !l.lock{
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beego.Warn("on locked:",l.Key())
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func (l *Mutex) Lock() bool {
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defer func() {
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if !l.lock {
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log.Warn("on locked:", l.Key())
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l.Close()
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}
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}()
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if l.lock{
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if l.lock {
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return l.lock
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}
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l.conn =redisPool.Get()
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resourceKey :=l.Key()
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if result, err := l.conn.Do("SET", resourceKey,l.resource,"NX","EX", l.timeOut); err != nil || result==nil{
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l.conn = redisPool.Get()
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resourceKey := l.Key()
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if result, err := l.conn.Do("SET", resourceKey, l.resource, "NX", "EX", l.timeOut); err != nil || result == nil {
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return l.lock
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}else{
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ok :=result.(string)
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if ok !="OK"{
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} else {
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ok := result.(string)
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if ok != "OK" {
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return l.lock
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}
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}
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l.lock = true
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return l.lock
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}
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//try get lock util time out
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func (l *Mutex) TryLock(timeOut int) bool {
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log.Info("try lock:", l.Key())
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now := time.Now().Unix() + int64(timeOut)
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count := 1
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for {
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if now < time.Now().Unix() {
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log.Info(fmt.Sprintf("try lock timeout:%v retry %v; end...", l.Key(), count))
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return false
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}
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result := l.Lock()
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if result {
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return true
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}
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log.Info(fmt.Sprintf("try lock fail:%v ... retry %v", l.Key(), count))
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count++
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time.Sleep(time.Second * 1)
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}
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}
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//解锁
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func(l *Mutex)UnLock()error{
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func (l *Mutex) UnLock() error {
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defer l.Close()
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if !l.lock{
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if !l.lock {
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return nil
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}
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if _,err :=l.conn.Do("DEL",l.Key());err!=nil{
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if _, err := l.conn.Do("DEL", l.Key()); err != nil {
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return err
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}
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l.lock = false
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return nil
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}
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//关闭
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func(l *Mutex)Close(){
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l.closeOnce.Do(func(){
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if l.conn!=nil{
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func (l *Mutex) Close() {
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l.closeOnce.Do(func() {
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if l.conn != nil {
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l.conn.Close()
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}
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})
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...
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...
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