fix(apigateway): api key not supported for SpecRestApi

packages/@aws-cdk/aws-apigateway/lib/api-key.ts

@@ -3,7 +3,7 @@ import { IResource as IResourceBase, Resource, Stack } from '@aws-cdk/core';
 import { Construct } from 'constructs';
 import { CfnApiKey } from './apigateway.generated';
 import { ResourceOptions } from './resource';
-import { RestApi } from './restapi';
+import { IRestApi } from './restapi';
 import { QuotaSettings, ThrottleSettings, UsagePlan, UsagePlanPerApiStage } from './usage-plan';
 
 /**
@@ -47,11 +47,10 @@ export interface ApiKeyOptions extends ResourceOptions {
  */
 export interface ApiKeyProps extends ApiKeyOptions {
   /**
-   * [disable-awslint:ref-via-interface]
    * A list of resources this api key is associated with.
    * @default none
    */
-  readonly resources?: RestApi[];
+  readonly resources?: IRestApi[];
 
   /**
    * An AWS Marketplace customer identifier to use when integrating with the AWS SaaS Marketplace.
@@ -183,12 +182,12 @@ export class ApiKey extends ApiKeyBase {
     });
   }
 
-  private renderStageKeys(resources: RestApi[] | undefined): CfnApiKey.StageKeyProperty[] | undefined {
+  private renderStageKeys(resources: IRestApi[] | undefined): CfnApiKey.StageKeyProperty[] | undefined {
     if (!resources) {
       return undefined;
     }
 
-    return resources.map((resource: RestApi) => {
+    return resources.map((resource: IRestApi) => {
       const restApi = resource;
       const restApiId = restApi.restApiId;
       const stageName = restApi.deploymentStage!.stageName.toString();

packages/@aws-cdk/aws-apigateway/lib/restapi.ts

@@ -378,6 +378,16 @@ export abstract class RestApiBase extends Resource implements IRestApi {
     });
   }
 
+  /**
+   * Add an ApiKey
+   */
+  public addApiKey(id: string, options?: ApiKeyOptions): IApiKey {
+    return new ApiKey(this, id, {
+      resources: [this],
+      ...options,
+    });
+  }
+
   /**
    * Returns the given named metric for this API
    */
@@ -706,16 +716,6 @@ export class RestApi extends RestApiBase {
     return this.urlForPath();
   }
 
-  /**
-   * Add an ApiKey
-   */
-  public addApiKey(id: string, options?: ApiKeyOptions): IApiKey {
-    return new ApiKey(this, id, {
-      resources: [this],
-      ...options,
-    });
-  }
-
   /**
    * Adds a new model.
    */

packages/@aws-cdk/aws-apigateway/test/restapi.test.ts

@@ -918,6 +918,34 @@ describe('restapi', () => {
         },
       });
     });
+
+    test('addApiKey is supported', () => {
+      // GIVEN
+      const stack = new Stack();
+      const api = new apigw.SpecRestApi(stack, 'myapi', {
+        apiDefinition: apigw.ApiDefinition.fromInline({ foo: 'bar' }),
+      });
+      api.root.addMethod('OPTIONS');
+
+      // WHEN
+      api.addApiKey('myapikey', {
+        apiKeyName: 'myApiKey1',
+        value: '01234567890ABCDEFabcdef',
+      });
+
+      // THEN
+      expect(stack).toHaveResource('AWS::ApiGateway::ApiKey', {
+        Enabled: true,
+        Name: 'myApiKey1',
+        StageKeys: [
+          {
+            RestApiId: { Ref: 'myapi162F20B8' },
+            StageName: { Ref: 'myapiDeploymentStageprod329F21FF' },
+          },
+        ],
+        Value: '01234567890ABCDEFabcdef',
+      });
+    });
   });
 
   describe('Metrics', () => {