完善自动续期，解决死锁和续期报错问题

main.go

@@ -27,7 +27,7 @@ func main() {
 		Work:      client.CreateRpcWorker(createRpcPoll(*host)),
 	}
 
-	e.Run(10)
+	e.Run(5000)
 }
 
 func createRpcPoll(port string) chan *rpc.Client {

redisLock/redis.go

@@ -33,7 +33,7 @@ func (r *RedisLock) Lock() {
 
 	script := `if redis.call('exists',KEYS[1]) == 0 or redis.call('hexists',KEYS[1],ARGV[1]) == 1 then
 				    redis.call('hincrby',KEYS[1],ARGV[1],1)
-					redis.call('expire',KEYS[1],ARGV[2])
+					redis.call('pexpire',KEYS[1],ARGV[2])
 					return 1
 				else
 					return 0
@@ -47,7 +47,7 @@ func (r *RedisLock) Lock() {
 	case r.lockKeepAliveCh <- struct{}{}:
 		go r.autoReNewExpire()
 	default:
-
+		log.Printf("start renew expore err: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
 	}
 
 	log.Printf("lock ok: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
@@ -65,8 +65,17 @@ func (r *RedisLock) Unlock() {
 			 elseif redis.call('hincrby',KEYS[1],ARGV[1],-1) == 0 then return redis.call('del',KEYS[1])
 			 else return 0 end`
 
-	if r.client.Eval(r.ctx, script, []string{r.kvt.key}, r.kvt.value).Val().(int64) == 1 {
-		r.lockKeepDoneCh <- struct{}{}
+	r.lockKeepDoneCh <- struct{}{} //这里一定要放到if外面，并且进来就要退掉定时线程，开始死锁是因为续期失败
+	//导致续期协程return掉，再往lockKeepDoneCh写数据时就会死锁。而且不能只在判断解锁成功时给该管道发送数据。如果解锁失败不掉用写数据
+	//会导致续期协程永不退出。ttl时间不能太短，太短可能会导致续期还没有完成key过期。30ms会有问题。网络环境差该值还要继续增大。
+
+	//for len(r.lockKeepAliveCh) > 0 {
+	//	//<-r.lockKeepAliveCh
+	//}
+
+	val := r.client.Eval(r.ctx, script, []string{r.kvt.key}, r.kvt.value).Val()
+
+	if i, ok := val.(int64); ok && i == 1 {
 		log.Printf("unlock ok: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
 	} else {
 		log.Printf("unlock err: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
@@ -78,19 +87,22 @@ func (r *RedisLock) autoReNewExpire() {
 		<-r.lockKeepAliveCh
 	}()
 
-	tc := time.NewTicker(time.Duration(r.kvt.ttl) * time.Second / 3)
+	log.Printf("auto renew start: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
+
+	tc := time.NewTicker(time.Duration(r.kvt.ttl) * time.Millisecond / 5)
 	defer tc.Stop()
 
 	for {
 		select {
 		case <-tc.C:
-			script := `if redis.call('hexists',KEYS[1],ARGV[1]) == 1 then return redis.call('expire',KEYS[1],ARGV[2])
+			script := `if redis.call('hexists',KEYS[1],ARGV[1]) == 1 then return redis.call('pexpire',KEYS[1],ARGV[2])
 					else return 0 end`
 
-			i, ok := r.client.Eval(r.ctx, script, []string{r.kvt.key}, r.kvt.value, r.kvt.ttl).Val().(int64)
-			if !ok || i == 0 {
+			val := r.client.Eval(r.ctx, script, []string{r.kvt.key}, r.kvt.value, r.kvt.ttl).Val()
+
+			if i, ok := val.(int64); !ok || i == 0 {
 				log.Printf("auto renew err: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)
-				return
+				//return
 			}
 		case <-r.lockKeepDoneCh:
 			log.Printf("auto renew down: %s,%s,%d\n", r.kvt.key, r.kvt.value, r.kvt.ttl)

worker/rpc.go

@@ -7,6 +7,7 @@ import (
 	"goRedisDLM/engine"
 	"goRedisDLM/redisLock"
 	"log"
+	"math/rand"
 	"strconv"
 	"time"
 
@@ -23,12 +24,11 @@ func (i *Inventory) Work(request engine.Request, response *engine.Response) erro
 
 	log.Printf("uuid: %s, lock key: %s\n", value.String(), request.Dlock)
 
-	lock := redisLock.CreateRedisLock(i.Client, context.Background(), request.Dlock, value.String(), 3)
+	lock := redisLock.CreateRedisLock(i.Client, context.Background(), request.Dlock, value.String(), 300)
 	lock.Lock()
 
-	time.Sleep(time.Second * 5)
+	time.Sleep(time.Duration(rand.Int31n(100)) * time.Millisecond)
 
-	log.Printf("uuid: %s get dlock\n", value.String())
 	get := i.Client.Get(context.Background(), "inventory")
 	log.Printf("%s\n", get)
 

worker/service/main.go

@@ -5,6 +5,7 @@ import (
 	"goRedisDLM/rpcSupport"
 	"goRedisDLM/worker"
 	"log"
+	_ "net/http/pprof"
 
 	"github.com/go-redis/redis/v8"
 )
@@ -21,6 +22,21 @@ func main() {
 		return
 	}
 
+	/*
+		pprof, err := strconv.Atoi(strings.Trim(*port, ":"))
+		if err != nil {
+			log.Println("pprof port error")
+
+			return
+		}
+
+		pprofPort := fmt.Sprintf(":%d", pprof+100)
+
+		go func() {
+			log.Println("pprof listen on: ", pprofPort)
+			log.Fatal(http.ListenAndServe(pprofPort, nil))
+		}()
+	*/
 	redisClient := redis.NewClient(&redis.Options{
 		Addr:     *redisHost,
 		Password: "redhat",