fix bug

pkg/channels/utils.go

@@ -0,0 +1,68 @@
+package channels
+
+import (
+	"context"
+	"errors"
+	"sync"
+
+	"clawgo/pkg/logger"
+)
+
+func truncateString(s string, maxLen int) string {
+	if len(s) <= maxLen {
+		return s
+	}
+	if maxLen <= 0 {
+		return ""
+	}
+	return s[:maxLen]
+}
+
+func safeCloseSignal(v interface{}) {
+	ch, ok := v.(chan struct{})
+	if !ok || ch == nil {
+		return
+	}
+	defer func() { _ = recover() }()
+	close(ch)
+}
+
+type cancelGuard struct {
+	mu     sync.Mutex
+	cancel context.CancelFunc
+}
+
+func (g *cancelGuard) set(cancel context.CancelFunc) {
+	g.mu.Lock()
+	g.cancel = cancel
+	g.mu.Unlock()
+}
+
+func (g *cancelGuard) cancelAndClear() {
+	g.mu.Lock()
+	cancel := g.cancel
+	g.cancel = nil
+	g.mu.Unlock()
+	if cancel != nil {
+		cancel()
+	}
+}
+
+func runChannelTask(name, taskName string, task func() error, onFailure func(error)) {
+	go func() {
+		if err := task(); err != nil {
+			if errors.Is(err, context.Canceled) {
+				logger.InfoCF(name, taskName+" stopped", map[string]interface{}{
+					"reason": "context canceled",
+				})
+				return
+			}
+			logger.ErrorCF(name, taskName+" failed", map[string]interface{}{
+				logger.FieldError: err.Error(),
+			})
+			if onFailure != nil {
+				onFailure(err)
+			}
+		}
+	}()
+}