feat(kube-client): Add debug tree modifications (migtools#67)

* Add changes to support debug tree api

* Make parameterized param optional

* add check for paramaterized resource

src/modules/kube-client/discoveryClient.ts

@@ -54,7 +54,11 @@ export class DiscoveryClient extends OAuthClient implements IDiscoveryClient {
   }
 
   public get = (resource: IDiscoveryResource, params?: IDiscoveryParameters): Promise<any> => {
-    return this._get(this.fullPath(resource.path()), resource.parametrized(params));
+    if (params && resource.parametrized) {
+      return this._get(this.fullPath(resource.path()), resource?.parametrized(params));
+    } else {
+      return this._get(this.fullPath(resource.path()));
+    }
   };
 
   public getRaw = (path: string): Promise<any> => {

src/modules/kube-client/resources/common.ts

@@ -9,9 +9,8 @@ export interface IDiscoveryResource {
   discoveryAggregator(): string;
   discoveryType(): string;
   path(): string;
-  parametrized(params?: IDiscoveryParameters): { [param: string]: string };
+  parametrized?(params?: IDiscoveryParameters): { [param: string]: string };
 }
-
 export interface INamedDiscoveryResource extends IDiscoveryResource {
   discoveryName(): string;
 }
@@ -113,7 +112,8 @@ export abstract class DiscoveryResource implements IDiscoveryResource {
   }
 }
 
-export abstract class NamedDiscoveryResource extends DiscoveryResource
+export abstract class NamedDiscoveryResource
+  extends DiscoveryResource
   implements INamedDiscoveryResource {
   private readonly _name: string;
 

src/modules/kube-client/resources/discovery.ts

@@ -71,8 +71,32 @@ export class PlanPodReportDiscovery extends DiscoveryResource {
   }
 }
 
-export class DebugTreeDiscoveryResource extends DiscoveryResource {
-  constructor(planName: string, params: IDiscoveryParameters = {}) {
-    super(planName, 'tree', params, 'plans');
+export interface IDebugTreeResource {
+  discoveryAggregator(): string;
+  discoveryType(): string;
+  path(): string;
+}
+
+export class DebugTreeDiscoveryResource implements IDebugTreeResource {
+  private readonly _aggregatorType: string;
+  private readonly _aggregatorName: string;
+  private readonly _aggregatorSpecifier: string;
+
+  constructor(planName: string, migrationName: string, treeType = 'plans') {
+    this._aggregatorType = treeType;
+    this._aggregatorName = planName;
+    this._aggregatorSpecifier = migrationName;
+  }
+
+  public discoveryType() {
+    return 'tree';
+  }
+
+  public discoveryAggregator() {
+    return [this._aggregatorType, this._aggregatorName].join('/');
+  }
+
+  public path(): string {
+    return [this.discoveryAggregator(), this.discoveryType(), this._aggregatorSpecifier].join('/');
   }
 }