Add metric warning support (announcement bar and DM) (#14483)

* Admin. Advisory: Add warning for number of active users metric status

Co-authored-by: Catalin Tomai <catalin.tomai@mattermost.com>

app/opentracing/opentracing_layer.go

@@ -8940,6 +8940,28 @@ func (a *OpenTracingAppLayer) GetViewUsersRestrictions(userId string) (*model.Vi
 	return resultVar0, resultVar1
 }
 
+func (a *OpenTracingAppLayer) GetWarnMetricsStatus() (map[string]*model.WarnMetricStatus, *model.AppError) {
+	origCtx := a.ctx
+	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.GetWarnMetricsStatus")
+
+	a.ctx = newCtx
+	a.app.Srv().Store.SetContext(newCtx)
+	defer func() {
+		a.app.Srv().Store.SetContext(origCtx)
+		a.ctx = origCtx
+	}()
+
+	defer span.Finish()
+	resultVar0, resultVar1 := a.app.GetWarnMetricsStatus()
+
+	if resultVar1 != nil {
+		span.LogFields(spanlog.Error(resultVar1))
+		ext.Error.Set(span, true)
+	}
+
+	return resultVar0, resultVar1
+}
+
 func (a *OpenTracingAppLayer) Handle404(w http.ResponseWriter, r *http.Request) {
 	origCtx := a.ctx
 	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.Handle404")
@@ -10255,6 +10277,28 @@ func (a *OpenTracingAppLayer) NewWebHub() *app.Hub {
 	return resultVar0
 }
 
+func (a *OpenTracingAppLayer) NotifyAndSetWarnMetricAck(warnMetricId string, sender *model.User, forceAck bool, isBot bool) *model.AppError {
+	origCtx := a.ctx
+	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.NotifyAndSetWarnMetricAck")
+
+	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.NotifyAndSetWarnMetricAck(warnMetricId, sender, forceAck, isBot)
+
+	if resultVar0 != nil {
+		span.LogFields(spanlog.Error(resultVar0))
+		ext.Error.Set(span, true)
+	}
+
+	return resultVar0
+}
+
 func (a *OpenTracingAppLayer) NotifySessionsExpired() *model.AppError {
 	origCtx := a.ctx
 	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.NotifySessionsExpired")