make instancetype configurable

closes #420

lib/aurora-serverless.ts

@@ -55,6 +55,7 @@ export class BastionHostAuroraServerlessForward extends BastionHostForward {
       serverTimeout: props.serverTimeout,
       shouldPatch: props.shouldPatch,
       cachedInContext: props.cachedInContext,
+      instanceType: props.instanceType,
     });
 
     if (props.iamUser !== undefined && props.resourceIdentifier !== undefined) {

lib/bastion-host-forward-base-props.ts

@@ -11,7 +11,7 @@
    limitations under the License.
 */
 
-import type { ISecurityGroup, IVpc } from 'aws-cdk-lib/aws-ec2';
+import type { InstanceType, ISecurityGroup, IVpc } from 'aws-cdk-lib/aws-ec2';
 
 export interface BastionHostForwardBaseProps {
   /**
@@ -75,4 +75,10 @@ export interface BastionHostForwardBaseProps {
    * @default false
    */
   readonly cachedInContext?: boolean;
+
+  /**
+   * Type of instance to launch
+   * @default 't4g.nano'
+   */
+  readonly instanceType?: InstanceType;
 }

lib/bastion-host-forward.ts

@@ -122,7 +122,7 @@ export class BastionHostForward extends Construct {
         generation: AmazonLinuxGeneration.AMAZON_LINUX_2023,
         cachedInContext: props.cachedInContext,
       }),
-      instanceType: InstanceType.of(InstanceClass.T4G, InstanceSize.NANO),
+      instanceType: props.instanceType ?? InstanceType.of(InstanceClass.T4G, InstanceSize.NANO),
       blockDevices: [
         {
           deviceName: '/dev/xvda',

lib/generic-bastion-host-forward.ts

@@ -34,6 +34,7 @@ export class GenericBastionHostForward extends BastionHostForward {
       serverTimeout: props.serverTimeout,
       shouldPatch: props.shouldPatch,
       cachedInContext: props.cachedInContext,
+      instanceType: props.instanceType,
     });
   }
 }

test/aurora-serverless.test.ts

@@ -14,7 +14,7 @@
 import { Template } from 'aws-cdk-lib/assertions';
 import { strict as assert } from 'assert';
 import { App, Stack } from 'aws-cdk-lib';
-import { SecurityGroup, Vpc } from 'aws-cdk-lib/aws-ec2';
+import { InstanceClass, InstanceSize, InstanceType, SecurityGroup, Vpc } from 'aws-cdk-lib/aws-ec2';
 import { DatabaseClusterEngine, ServerlessCluster } from 'aws-cdk-lib/aws-rds';
 import { BastionHostAuroraServerlessForward } from '../lib/aurora-serverless';
 
@@ -208,3 +208,28 @@ test('Bastion Host with own securityGroup', () => {
   assert.equal(securityGroup.securityGroupId, bastionHostSecurityGroup.securityGroupId);
   assert.equal(securityGroup.allowAllOutbound, bastionHostSecurityGroup.allowAllOutbound);
 });
+
+test('Bastion Host with different instanceType', () => {
+  const app = new App();
+  const stack = new Stack(app, 'TestStack');
+  const testVpc = new Vpc(stack, 'TestVpc');
+  const testAurora = new ServerlessCluster(stack, 'TestAurora', {
+    engine: DatabaseClusterEngine.AURORA,
+    vpc: testVpc,
+  });
+
+  // WHEN
+  new BastionHostAuroraServerlessForward(stack, 'MyTestConstruct', {
+    vpc: testVpc,
+    name: 'MyBastion',
+    serverlessCluster: testAurora,
+    instanceType: InstanceType.of(InstanceClass.T3, InstanceSize.MEDIUM),
+  });
+
+  const template = Template.fromStack(stack);
+
+  // THEN
+  template.hasResourceProperties('AWS::EC2::Instance', {
+    InstanceType: 't3.medium',
+  });
+});

tsconfig.json

@@ -7,7 +7,9 @@
     "declaration": true,
     "experimentalDecorators": true,
     "incremental": true,
-    "lib": ["es2020"],
+    "lib": [
+      "es2020"
+    ],
     "module": "CommonJS",
     "noEmitOnError": true,
     "noFallthroughCasesInSwitch": true,
@@ -26,7 +28,12 @@
     "composite": false,
     "tsBuildInfoFile": "tsconfig.tsbuildinfo"
   },
-  "include": ["**/*.ts"],
-  "exclude": ["node_modules", ".types-compat"],
+  "include": [
+    "**/*.ts"
+  ],
+  "exclude": [
+    "node_modules",
+    ".types-compat"
+  ],
   "_generated_by_jsii_": "Generated by jsii - safe to delete, and ideally should be in .gitignore"
-}
+}