feat: track pruned messages in tracer (#384)

* feat: track pruned messages in tracer * chore: rename to iwantMessagePruned
ChainSafe · Dec 14, 2022 · dbeb879 · dbeb879
1 parent 23d49be
commit dbeb879
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diff --git a/src/metrics.ts b/src/metrics.ts
@@ -469,6 +469,10 @@ export function getMetrics(
       name: 'gossipsub_iwant_promise_broken',
       help: 'Total count of broken IWANT promises'
     }),
+    iwantMessagePruned: register.gauge({
+      name: 'gossipsub_iwant_message_pruned',
+      help: 'Total count of pruned IWANT messages'
+    }),
     /** Histogram of delivery time of resolved IWANT promises */
     iwantPromiseDeliveryTime: register.histogram({
       name: 'gossipsub_iwant_promise_delivery_seconds',

diff --git a/src/tracer.ts b/src/tracer.ts
@@ -144,17 +144,21 @@ export class IWantTracer {
 
   prune(): void {
     const maxMs = Date.now() - this.requestMsByMsgExpire
+    let count = 0
 
     for (const [k, v] of this.requestMsByMsg.entries()) {
       if (v < maxMs) {
         // messages that stay too long in the requestMsByMsg map, delete
         this.requestMsByMsg.delete(k)
+        count++
       } else {
         // recent messages, keep them
         // sort by insertion order
         break
       }
     }
+
+    this.metrics?.iwantMessagePruned.inc(count)
   }
 
   private trackMessage(msgIdStr: MsgIdStr): void {