p2p: add peer pool logs and discovery logs to example/monitor.rs

1 files changed, 3 insertions, 7 deletions

diff --git a/core/src/event.rs b/core/src/event.rs
index 876fda5..a32677b 100644
--- a/core/src/event.rs
+++ b/core/src/event.rs
@@ -243,9 +243,9 @@ where
 
     /// Cancels the listener and removes it from the `EventSys`.
     pub async fn cancel(&self) {
-        self.event_sys()
-            .remove(&self.topic, &self.event_id, &self.id)
-            .await;
+        if let Some(es) = self.event_sys.upgrade() {
+            es.remove(&self.topic, &self.event_id, &self.id).await;
+        }
     }
 
     /// Returns the topic for this event listener.
@@ -257,10 +257,6 @@ where
     pub async fn event_id(&self) -> &String {
         &self.event_id
     }
-
-    fn event_sys(&self) -> ArcEventSys<T> {
-        self.event_sys.upgrade().unwrap()
-    }
 }
 
 /// An event within the [`EventSys`].