MM-57882 Add metric for the time it takes to open the Threads list (#26983)

* MM-57882 Add metric for the time it takes to open the Threads list

* Clean up mark because the starting mark may be missing

* Pass global threads load duration to Prometheus

* Update mocks

server/channels/app/metrics.go

@@ -42,6 +42,8 @@ func (a *App) RegisterPerformanceReport(rctx request.CTX, report *model.Performa
 			a.Metrics().ObserveClientTeamSwitchDuration(commonLabels["platform"], commonLabels["agent"], h.Value/1000)
 		case model.ClientRHSLoadDuration:
 			a.Metrics().ObserveClientRHSLoadDuration(commonLabels["platform"], commonLabels["agent"], h.Value/1000)
+		case model.ClientGlobalThreadsLoadDuration:
+			a.Metrics().ObserveGlobalThreadsLoadDuration(commonLabels["platform"], commonLabels["agent"], h.Value/1000)
 		default:
 			// we intentionally skip unknown metrics
 		}

server/einterfaces/metrics.go

@@ -112,4 +112,5 @@ type MetricsInterface interface {
 	ObserveClientChannelSwitchDuration(platform, agent string, elapsed float64)
 	ObserveClientTeamSwitchDuration(platform, agent string, elapsed float64)
 	ObserveClientRHSLoadDuration(platform, agent string, elapsed float64)
+	ObserveGlobalThreadsLoadDuration(platform, agent string, elapsed float64)
 }

server/einterfaces/mocks/MetricsInterface.go

@@ -353,6 +353,11 @@ func (_m *MetricsInterface) ObserveFilesSearchDuration(elapsed float64) {
 	_m.Called(elapsed)
 }
 
+// ObserveGlobalThreadsLoadDuration provides a mock function with given fields: platform, agent, elapsed
+func (_m *MetricsInterface) ObserveGlobalThreadsLoadDuration(platform string, agent string, elapsed float64) {
+	_m.Called(platform, agent, elapsed)
+}
+
 // ObservePluginAPIDuration provides a mock function with given fields: pluginID, apiName, success, elapsed
 func (_m *MetricsInterface) ObservePluginAPIDuration(pluginID string, apiName string, success bool, elapsed float64) {
 	_m.Called(pluginID, apiName, success, elapsed)

server/enterprise/metrics/metrics.go

@@ -211,15 +211,16 @@ type MetricsInterfaceImpl struct {
 	NotificationNotSentCounters     *prometheus.CounterVec
 	NotificationUnsupportedCounters *prometheus.CounterVec
 
-	ClientTimeToFirstByte        *prometheus.HistogramVec
-	ClientFirstContentfulPaint   *prometheus.HistogramVec
-	ClientLargestContentfulPaint *prometheus.HistogramVec
-	ClientInteractionToNextPaint *prometheus.HistogramVec
-	ClientCumulativeLayoutShift  *prometheus.HistogramVec
-	ClientLongTasks              *prometheus.CounterVec
-	ClientChannelSwitchDuration  *prometheus.HistogramVec
-	ClientTeamSwitchDuration     *prometheus.HistogramVec
-	ClientRHSLoadDuration        *prometheus.HistogramVec
+	ClientTimeToFirstByte           *prometheus.HistogramVec
+	ClientFirstContentfulPaint      *prometheus.HistogramVec
+	ClientLargestContentfulPaint    *prometheus.HistogramVec
+	ClientInteractionToNextPaint    *prometheus.HistogramVec
+	ClientCumulativeLayoutShift     *prometheus.HistogramVec
+	ClientLongTasks                 *prometheus.CounterVec
+	ClientChannelSwitchDuration     *prometheus.HistogramVec
+	ClientTeamSwitchDuration        *prometheus.HistogramVec
+	ClientRHSLoadDuration           *prometheus.HistogramVec
+	ClientGlobalThreadsLoadDuration *prometheus.HistogramVec
 }
 
 func init() {
@@ -1232,6 +1233,17 @@ func New(ps *platform.PlatformService, driver, dataSource string) *MetricsInterf
 	)
 	m.Registry.MustRegister(m.ClientRHSLoadDuration)
 
+	m.ClientGlobalThreadsLoadDuration = prometheus.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Namespace: MetricsNamespace,
+			Subsystem: MetricsSubsystemClientsWeb,
+			Name:      "global_threads_load",
+			Help:      "Duration of the time taken from when a user clicks to open Threads in the LHS until when the global threads view becomes visible (milliseconds)",
+		},
+		[]string{"platform", "agent"},
+	)
+	m.Registry.MustRegister(m.ClientGlobalThreadsLoadDuration)
+
 	return m
 }
 
@@ -1726,6 +1738,10 @@ func (mi *MetricsInterfaceImpl) ObserveClientRHSLoadDuration(platform, agent str
 	mi.ClientRHSLoadDuration.With(prometheus.Labels{"platform": platform, "agent": agent}).Observe(elapsed)
 }
 
+func (mi *MetricsInterfaceImpl) ObserveGlobalThreadsLoadDuration(platform, agent string, elapsed float64) {
+	mi.ClientGlobalThreadsLoadDuration.With(prometheus.Labels{"platform": platform, "agent": agent}).Observe(elapsed)
+}
+
 func extractDBCluster(driver, connectionString string) (string, error) {
 	host, err := extractHost(driver, connectionString)
 	if err != nil {

server/public/model/metrics.go

@@ -14,15 +14,16 @@ import (
 type MetricType string
 
 const (
-	ClientTimeToFirstByte        MetricType = "TTFB"
-	ClientFirstContentfulPaint   MetricType = "FCP"
-	ClientLargestContentfulPaint MetricType = "LCP"
-	ClientInteractionToNextPaint MetricType = "INP"
-	ClientCumulativeLayoutShift  MetricType = "CLS"
-	ClientLongTasks              MetricType = "long_tasks"
-	ClientChannelSwitchDuration  MetricType = "channel_switch"
-	ClientTeamSwitchDuration     MetricType = "team_switch"
-	ClientRHSLoadDuration        MetricType = "rhs_load"
+	ClientTimeToFirstByte           MetricType = "TTFB"
+	ClientFirstContentfulPaint      MetricType = "FCP"
+	ClientLargestContentfulPaint    MetricType = "LCP"
+	ClientInteractionToNextPaint    MetricType = "INP"
+	ClientCumulativeLayoutShift     MetricType = "CLS"
+	ClientLongTasks                 MetricType = "long_tasks"
+	ClientChannelSwitchDuration     MetricType = "channel_switch"
+	ClientTeamSwitchDuration        MetricType = "team_switch"
+	ClientRHSLoadDuration           MetricType = "rhs_load"
+	ClientGlobalThreadsLoadDuration MetricType = "global_threads_load"
 
 	performanceReportTTLMilliseconds = 300 * 1000 // 300 seconds/5 minutes
 )

webapp/channels/src/components/threading/global_threads/global_threads.tsx

@@ -31,6 +31,7 @@ import LoadingScreen from 'components/loading_screen';
 import NoResultsIndicator from 'components/no_results_indicator';
 
 import {PreviousViewedTypes} from 'utils/constants';
+import {Mark, Measure, measureAndReport} from 'utils/performance_telemetry';
 
 import type {GlobalState} from 'types/store/index';
 import {LhsItemType, LhsPage} from 'types/store/lhs';
@@ -117,6 +118,13 @@ const GlobalThreads = () => {
         });
     }, [filter, threadIds, unreadThreadIds]);
 
+    useEffect(() => {
+        if (!isLoading) {
+            measureAndReport(Measure.GlobalThreadsLoad, Mark.GlobalThreadsLinkClicked, undefined, true);
+            performance.clearMarks(Mark.GlobalThreadsLinkClicked);
+        }
+    }, [isLoading]);
+
     useEffect(() => {
         if (!selectedThread && !selectedPost && !isLoading) {
             clear();

webapp/channels/src/components/threading/global_threads_link/global_threads_link.tsx

@@ -35,6 +35,7 @@ import Constants, {
     RHSStates,
 } from 'utils/constants';
 import {t} from 'utils/i18n';
+import {Mark} from 'utils/performance_telemetry';
 
 import type {GlobalState} from 'types/store';
 
@@ -67,10 +68,15 @@ const GlobalThreadsLink = () => {
     const showTutorialTrigger = isFeatureEnabled && crtTutorialTrigger === Constants.CrtTutorialTriggerSteps.START && !appHaveOpenModal && Boolean(threadsCount) && threadsCount.total >= 1;
     const openThreads = useCallback((e) => {
         e.stopPropagation();
+
         trackEvent('crt', 'go_to_global_threads');
+
+        performance.mark(Mark.GlobalThreadsLinkClicked);
+
         if (showTutorialTrigger) {
             dispatch(openModal({modalId: ModalIdentifiers.COLLAPSED_REPLY_THREADS_MODAL, dialogType: CollapsedReplyThreadsModal, dialogProps: {}}));
         }
+
         if (rhsOpen && rhsState === RHSStates.EDIT_HISTORY) {
             dispatch(closeRightHandSide());
         }

webapp/channels/src/utils/performance_telemetry/index.ts

@@ -3,6 +3,7 @@
 
 export const enum Mark {
     ChannelLinkClicked = 'SidebarChannelLink#click',
+    GlobalThreadsLinkClicked = 'GlobalThreadsLink#click',
     PostListLoaded = 'PostList#component',
     PostSelected = 'PostList#postSelected',
     TeamLinkClicked = 'TeamLink#click',
@@ -10,6 +11,7 @@ export const enum Mark {
 
 export const enum Measure {
     ChannelSwitch = 'channel_switch',
+    GlobalThreadsLoad = 'global_threads_load',
     RhsLoad = 'rhs_load',
     TeamSwitch = 'team_switch',
 }