fix(main): node expired when system sleep too long

core/utils.go

@@ -0,0 +1,37 @@
+package core
+
+import (
+	"context"
+	"log/slog"
+	"time"
+)
+
+func StartTimeWatchDog(ctx context.Context, logger *slog.Logger) <-chan struct{} {
+	logger.Info("starting watchdog")
+	ch := make(chan struct{}, 1)
+	go func() {
+		lastUnix := time.Now().Unix()
+		ticker := time.NewTicker(5 * time.Second)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				nowUnix := time.Now().Unix()
+				diff := nowUnix - lastUnix
+				if diff > 300 {
+					logger.Warn("system time jump detected(wake up from sleep?)",
+						slog.Int64("jump_seconds", diff),
+					)
+					ch <- struct{}{}
+					logger.Debug("signal sent, watchdog exiting...")
+					return
+				} else {
+					lastUnix = nowUnix
+				}
+			}
+		}
+	}()
+	return ch
+}