集群需要判断能否执行reader

cluster.go

@@ -56,7 +56,6 @@ func InitCluster(ctx context.Context, red redis.UniversalClient, keyPrefix strin
 	op := newOptions(opts...)
 
 	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
 
 	clu := &Cluster{
 		ctx:         ctx,
@@ -138,8 +137,17 @@ func (l *Cluster) leaderElection() {
 
 // 成为领导
 func (l *Cluster) getLeaderLock() error {
+
+	// 非当前优先级不用抢leader
+	if l.usePriority && !l.priority.IsLatest(l.ctx) {
+		return nil
+	}
+
+	ctx, cancel := context.WithCancel(l.ctx)
+	defer cancel()
+
 	// 尝试加锁
-	lock, err := lockx.NewGlobalLock(l.ctx, l.redis, l.leaderKey)
+	lock, err := lockx.NewGlobalLock(ctx, l.redis, l.leaderKey)
 	if err != nil {
 		l.logger.Errorf(l.ctx, "getLeaderLock err:%+v", err)
 		return err
@@ -160,8 +168,30 @@ func (l *Cluster) getLeaderLock() error {
 
 	l.logger.Infof(l.ctx, "getLeaderLock Instance %s became leader", lock.GetValue())
 
+	go func() {
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-l.stopChan:
+				return
+			default:
+				if !l.priority.IsLatest(l.ctx) {
+					cancel()
+				}
+				time.Sleep(100 * time.Millisecond)
+			}
+		}
+	}()
+
 	// 等待超时退出
 	<-lock.GetCtx().Done()
+
+	// 已过期
+	// l.leaderLock.Lock()
+	// l.isLeader = false
+	// l.leaderLock.Unlock()
+
 	return nil
 
 }