Add new Metrics API (#26919)

server/channels/app/app_iface.go

@@ -1004,6 +1004,7 @@ type AppIface interface {
 	RegenOutgoingWebhookToken(hook *model.OutgoingWebhook) (*model.OutgoingWebhook, *model.AppError)
 	RegenerateOAuthAppSecret(app *model.OAuthApp) (*model.OAuthApp, *model.AppError)
 	RegenerateTeamInviteId(teamID string) (*model.Team, *model.AppError)
+	RegisterPerformanceReport(rctx request.CTX, report *model.PerformanceReport) *model.AppError
 	RegisterPluginCommand(pluginID string, command *model.Command) error
 	RegisterPluginForSharedChannels(rctx request.CTX, opts model.RegisterPluginOpts) (remoteID string, err error)
 	ReloadConfig() error

server/channels/app/metrics.go

@@ -0,0 +1,51 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package app
+
+import (
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/request"
+)
+
+func (a *App) RegisterPerformanceReport(rctx request.CTX, report *model.PerformanceReport) *model.AppError {
+	if a.Metrics() == nil {
+		return nil
+	}
+
+	commonLabels := report.ProcessLabels()
+
+	for _, c := range report.Counters {
+		switch c.Metric {
+		case model.ClientLongTasks:
+			a.Metrics().IncrementClientLongTasks(commonLabels["platform"], commonLabels["agent"], float64(c.Value))
+		default:
+			// we intentionally skip unknown metrics
+		}
+	}
+
+	for _, h := range report.Histograms {
+		switch h.Metric {
+		case model.ClientTimeToFirstByte:
+			a.Metrics().ObserveClientTimeToFirstByte(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientFirstContentfulPaint:
+			a.Metrics().ObserveClientFirstContentfulPaint(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientLargestContentfulPaint:
+			a.Metrics().ObserveClientLargestContentfulPaint(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientInteractionToNextPaint:
+			a.Metrics().ObserveClientInteractionToNextPaint(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientCumulativeLayoutShift:
+			a.Metrics().ObserveClientCumulativeLayoutShift(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientChannelSwitchDuration:
+			a.Metrics().ObserveClientChannelSwitchDuration(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientTeamSwitchDuration:
+			a.Metrics().ObserveClientTeamSwitchDuration(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		case model.ClientRHSLoadDuration:
+			a.Metrics().ObserveClientRHSLoadDuration(commonLabels["platform"], commonLabels["agent"], float64(h.Value))
+		default:
+			// we intentionally skip unknown metrics
+		}
+	}
+
+	return nil
+}

server/channels/app/opentracing/opentracing_layer.go

@@ -14095,6 +14095,28 @@ func (a *OpenTracingAppLayer) RegenerateTeamInviteId(teamID string) (*model.Team
 	return resultVar0, resultVar1
 }
 
+func (a *OpenTracingAppLayer) RegisterPerformanceReport(rctx request.CTX, report *model.PerformanceReport) *model.AppError {
+	origCtx := a.ctx
+	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.RegisterPerformanceReport")
+
+	a.ctx = newCtx
+	a.app.Srv().Store().SetContext(newCtx)
+	defer func() {
+		a.app.Srv().Store().SetContext(origCtx)
+		a.ctx = origCtx
+	}()
+
+	defer span.Finish()
+	resultVar0 := a.app.RegisterPerformanceReport(rctx, report)
+
+	if resultVar0 != nil {
+		span.LogFields(spanlog.Error(resultVar0))
+		ext.Error.Set(span, true)
+	}
+
+	return resultVar0
+}
+
 func (a *OpenTracingAppLayer) RegisterPluginCommand(pluginID string, command *model.Command) error {
 	origCtx := a.ctx
 	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.RegisterPluginCommand")