From f1fe71650b5882ca76f1615a153e46469cbc3a25 Mon Sep 17 00:00:00 2001
From: Liza Katz <lizka.k@gmail.com>
Date: Wed, 20 Oct 2021 18:19:53 +0300
Subject: [PATCH] [Bug] fix memory info extraction for fullstory (#115756)

* fix memory info extraction

* ts
---
 x-pack/plugins/cloud/public/plugin.test.ts | 18 ++++++++++++++----
 x-pack/plugins/cloud/public/plugin.ts      | 16 ++++++++++------
 2 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/x-pack/plugins/cloud/public/plugin.test.ts b/x-pack/plugins/cloud/public/plugin.test.ts
index a19a28d6c4713..c1c94375d7063 100644
--- a/x-pack/plugins/cloud/public/plugin.test.ts
+++ b/x-pack/plugins/cloud/public/plugin.test.ts
@@ -138,14 +138,22 @@ describe('Cloud Plugin', () => {
 
       describe('with memory', () => {
         beforeAll(() => {
-          // @ts-expect-error
+          // @ts-expect-error 2339
           window.performance.memory = {
-            someMetric: 1,
+            get jsHeapSizeLimit() {
+              return 3;
+            },
+            get totalJSHeapSize() {
+              return 2;
+            },
+            get usedJSHeapSize() {
+              return 1;
+            },
           };
         });
 
         afterAll(() => {
-          // @ts-expect-error
+          // @ts-expect-error 2339
           delete window.performance.memory;
         });
 
@@ -159,7 +167,9 @@ describe('Cloud Plugin', () => {
 
           expect(fullStoryApiMock.event).toHaveBeenCalledWith('Loaded Kibana', {
             kibana_version_str: initContext.env.packageInfo.version,
-            some_metric_int: 1,
+            memory_js_heap_size_limit_int: 3,
+            memory_js_heap_size_total_int: 2,
+            memory_js_heap_size_used_int: 1,
           });
         });
       });
diff --git a/x-pack/plugins/cloud/public/plugin.ts b/x-pack/plugins/cloud/public/plugin.ts
index 82fabea8b5a56..64b03acdc3ffd 100644
--- a/x-pack/plugins/cloud/public/plugin.ts
+++ b/x-pack/plugins/cloud/public/plugin.ts
@@ -16,7 +16,6 @@ import {
 } from 'src/core/public';
 import { i18n } from '@kbn/i18n';
 import { Subscription } from 'rxjs';
-import { mapKeys, snakeCase } from 'lodash';
 import type {
   AuthenticatedUser,
   SecurityPluginSetup,
@@ -250,11 +249,16 @@ export class CloudPlugin implements Plugin<CloudSetup> {
     }
 
     // Get performance information from the browser (non standard property
-    const memoryInfo = mapKeys(
-      // @ts-expect-error
-      window.performance.memory || {},
-      (_, key) => `${snakeCase(key)}_int`
-    );
+    // @ts-expect-error 2339
+    const memory = window.performance.memory;
+    let memoryInfo = {};
+    if (memory) {
+      memoryInfo = {
+        memory_js_heap_size_limit_int: memory.jsHeapSizeLimit,
+        memory_js_heap_size_total_int: memory.totalJSHeapSize,
+        memory_js_heap_size_used_int: memory.usedJSHeapSize,
+      };
+    }
     // Record an event that Kibana was opened so we can easily search for sessions that use Kibana
     fullStory.event('Loaded Kibana', {
       // `str` suffix is required, see docs: https://help.fullstory.com/hc/en-us/articles/360020623234