From 1c703f4259f546905f921d563e86849a7dbba452 Mon Sep 17 00:00:00 2001
From: Alec Gibson <12036746+alecgibson@users.noreply.github.com>
Date: Mon, 9 Oct 2023 14:10:49 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=93=88=20Add=20`presence.broadcast`=20`ti?=
 =?UTF-8?q?ming`=20event?=
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This change adds a `presence.broadcast` `timing` event, which can be
used to monitor Presence broadcast performance.
---
 lib/agent.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/agent.js b/lib/agent.js
index 3c6fa4161..2a44b51c8 100644
--- a/lib/agent.js
+++ b/lib/agent.js
@@ -776,6 +776,7 @@ Agent.prototype._broadcastPresence = function(presence, callback) {
     presence: presence,
     collection: presence.c
   };
+  var start = Date.now();
   backend.trigger(backend.MIDDLEWARE_ACTIONS.receivePresence, this, context, function(error) {
     if (error) return callback(error);
     backend.transformPresenceToLatestVersion(agent, presence, function(error, presence) {
@@ -783,6 +784,7 @@ Agent.prototype._broadcastPresence = function(presence, callback) {
       var channel = agent._getPresenceChannel(presence.ch);
       agent.backend.pubsub.publish([channel], presence, function(error) {
         if (error) return callback(error);
+        backend.emit('timing', 'presence.broadcast', Date.now() - start);
         callback(null, presence);
       });
     });