初步完成龙台的读卡逻辑

pkg/channel/channel.go

@@ -0,0 +1,54 @@
+package channel
+
+import "sync"
+
+// Closed 可包含关闭状态的通道
+type Closed[T any] struct {
+	ch     chan T
+	closed bool
+	mu     sync.RWMutex
+}
+
+func (s *Closed[T]) Close() {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.closed {
+		return
+	}
+
+	close(s.ch)
+	s.closed = true
+
+	return
+}
+
+func (s *Closed[T]) Data() <-chan T {
+	return s.ch
+}
+
+func (s *Closed[T]) Send(data T) bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	if s.closed {
+		return false
+	}
+
+	s.ch <- data
+
+	return true
+}
+
+func (s *Closed[T]) isClosed() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	return s.closed
+}
+
+func NewClosed[T any]() *Closed[T] {
+	return &Closed[T]{
+		ch: make(chan T),
+	}
+}