Added new enum to TrackindId in order to track latency of packets cle…

…ared

relayer/src/chain/tracking.rs

@@ -14,6 +14,8 @@ pub enum TrackingId {
     /// corresponding event batch, eg. when performing actions from
     /// the CLI or during packet clearing.
     Static(&'static str),
+    /// Random identifier used to track latency of packet clearing.
+    ClearedUuid(Uuid),
 }
 
 impl TrackingId {
@@ -26,6 +28,10 @@ impl TrackingId {
     pub fn new_static(s: &'static str) -> Self {
         Self::Static(s)
     }
+
+    pub fn new_cleared_uuid() -> Self {
+        Self::ClearedUuid(Uuid::new_v4())
+    }
 }
 
 impl fmt::Display for TrackingId {
@@ -37,6 +43,13 @@ impl fmt::Display for TrackingId {
                 s.fmt(f)
             }
             TrackingId::Static(s) => s.fmt(f),
+            TrackingId::ClearedUuid(u) => {
+                let mut uuid = "cleared/".to_owned();
+                let mut s = u.to_string();
+                s.truncate(8);
+                uuid.push_str(&s);
+                uuid.fmt(f)
+            }
         }
     }
 }

relayer/src/link/relay_path.rs

@@ -399,7 +399,8 @@ impl<ChainA: ChainHandle, ChainB: ChainHandle> RelayPath<ChainA, ChainB> {
     }
 
     fn relay_pending_packets(&self, height: Option<Height>) -> Result<(), LinkError> {
-        let tracking_id = TrackingId::new_static("relay pending packets");
+        let tracking_id = TrackingId::new_cleared_uuid();
+        telemetry!(received_event_batch, tracking_id);
 
         for i in 1..=MAX_RETRIES {
             let cleared = self