Add PM2 metric tracking for Websocket Heartbeat

index.js

@@ -44,6 +44,14 @@ for (const file of commandFiles) {
 client.once(Events.ClientReady, c => {
 	logger.log(logger.logLevels.INFO, `${logger.colorText('Ready!', logger.textColor.Green)} Logged in as ${logger.colorText(c.user.tag, logger.textColor.Blue)}`);
 	client.user.setPresence({ activities: [{ name: activity }], status: status });
+
+	// Track websocket heartbeat with PM2 Histogram
+	let latency = 0;
+	setInterval(function() {
+		latency = c.ws.ping;
+		metrics.websocketHeartbeatHist.update(latency);
+	}, 1000);
+
 });
 
 // Client "on" Events

utils/pm2-metrics.js

@@ -7,17 +7,19 @@ const io = require('@pm2/io');
 
 const interactionErrors = io.counter({
 	name: 'Interaction Errors (Since last restart)',
-	id: 'app/interactions/errors',
 });
 
 const interactionSuccessCounter = io.counter({
 	name: 'Interaction Successful Runs (Since last restart)',
-	id: 'app/interactions/success',
 });
 
 const interactionSuccessMeter = io.meter({
 	name: 'Successful Interactions per Second',
-	id: 'app/interactions/success',
+});
+
+const websocketHeartbeatHist = io.histogram({
+	name: 'Websocket Heartbeat (ms)',
+	measurement: 'mean',
 });
 
 const interactionSuccess = function() {
@@ -29,4 +31,5 @@ module.exports = {
 	io,
 	interactionErrors,
 	interactionSuccess,
+	websocketHeartbeatHist,
 };