refactor(deployments): add ScaledStat interface

Add a ScaledStat interface to provide a common type for ScaledNetworkStat and ScaledMemoryStat

fixes openshiftio/openshift.io#2962

src/app/space/create/deployments/apps/deployment-details.component.ts

@@ -25,6 +25,10 @@ import { MemoryStat } from '../models/memory-stat';
 import { NetworkStat } from '../models/network-stat';
 import { Pods } from '../models/pods';
 import { ScaledNetStat } from '../models/scaled-net-stat';
+import {
+  instanceOfScaledStat,
+  ScaledStat
+} from '../models/scaled-stat';
 import { Stat } from '../models/stat';
 import {
   DeploymentStatusService,
@@ -321,7 +325,7 @@ export class DeploymentDetailsComponent {
   private getNetStatValue(stat: NetworkStat): { sent: number, received: number } {
     let sent: number = stat.sent.used;
     let received: number = stat.received.used;
-    if ((stat.received instanceof ScaledNetStat) && (stat.sent instanceof ScaledNetStat)) {
+    if (instanceOfScaledStat(stat.sent) && instanceOfScaledStat(stat.received)) {
       sent = stat.sent.raw;
       received = stat.received.raw;
     }

src/app/space/create/deployments/models/scaled-memory-stat.ts

@@ -2,20 +2,23 @@ import {
   MemoryStat,
   MemoryUnit
 } from './memory-stat';
+import { ScaledStat } from './scaled-stat';
 
 import { round } from 'lodash';
 
-export class ScaledMemoryStat implements MemoryStat {
+export class ScaledMemoryStat implements MemoryStat, ScaledStat {
 
   private static readonly UNITS = ['bytes', 'KB', 'MB', 'GB'];
 
+  public readonly raw: number;
   public readonly units: MemoryUnit;
 
   constructor(
     public readonly used: number,
     public readonly quota: number,
     public readonly timestamp?: number
   ) {
+    this.raw = used;
     let scale = 0;
     if (this.used !== 0) {
       while (this.used > 1024 && scale < ScaledMemoryStat.UNITS.length) {

src/app/space/create/deployments/models/scaled-net-stat.ts

@@ -1,9 +1,10 @@
 import { MemoryUnit } from './memory-stat';
 import { NetStat } from './network-stat';
+import { ScaledStat } from './scaled-stat';
 
 import { round } from 'lodash';
 
-export class ScaledNetStat implements NetStat {
+export class ScaledNetStat implements NetStat, ScaledStat {
 
   private static readonly UNITS = ['bytes', 'KB', 'MB', 'GB'];
 

src/app/space/create/deployments/models/scaled-stat.ts

@@ -0,0 +1,7 @@
+export interface ScaledStat {
+  readonly raw: number;
+}
+
+export function instanceOfScaledStat(object: any): object is ScaledStat {
+  return 'raw' in object;
+}