feat: allow specifying subnets

.projenrc.js

@@ -7,7 +7,7 @@ const project = new awscdk.AwsCdkConstructLibrary({
   authorName: 'Pahud Hsieh',
   authorEmail: 'hunhsieh@amazon.com',
   name: PROJECT_NAME,
-  cdkVersion: '2.18.0',
+  cdkVersion: '2.29.1',
   description: PROJECT_DESCRIPTION,
   repository: 'https://github.com/aws-samples/cdk-serverless-lamp.git',
   defaultReleaseBranch: 'main',

API.md

@@ -46,6 +46,7 @@ new DatabaseCluster(scope: Construct, id: string, props: DatabaseProps)
   * **masterUserName** (<code>string</code>)  master username. __*Default*__: admin
   * **rdsProxy** (<code>boolean</code>)  enable the Amazon RDS proxy. __*Default*__: true
   * **rdsProxyOptions** (<code>[aws_rds.DatabaseProxyOptions](#aws-cdk-lib-aws-rds-databaseproxyoptions)</code>)  RDS Proxy Options. __*Optional*__
+  * **vpcSubnets** (<code>[aws_ec2.SubnetSelection](#aws-cdk-lib-aws-ec2-subnetselection)</code>)  List of subnets to use when creating subnet group. __*Optional*__
 
 
 
@@ -160,6 +161,7 @@ Name | Type | Description
 **masterUserName**? | <code>string</code> | master username.<br/>__*Default*__: admin
 **rdsProxy**? | <code>boolean</code> | enable the Amazon RDS proxy.<br/>__*Default*__: true
 **rdsProxyOptions**? | <code>[aws_rds.DatabaseProxyOptions](#aws-cdk-lib-aws-rds-databaseproxyoptions)</code> | RDS Proxy Options.<br/>__*Optional*__
+**vpcSubnets**? | <code>[aws_ec2.SubnetSelection](#aws-cdk-lib-aws-ec2-subnetselection)</code> | List of subnets to use when creating subnet group.<br/>__*Optional*__
 
 
 

src/index.ts

@@ -200,6 +200,11 @@ export interface DatabaseProps {
    */
   readonly instanceCapacity?: number;
 
+  /**
+   * List of subnets to use when creating subnet group.
+   */
+  readonly vpcSubnets?: ec2.SubnetSelection;
+
 }
 
 export class DatabaseCluster extends Construct {
@@ -241,6 +246,7 @@ export class DatabaseCluster extends Construct {
         vpc: props.vpc,
         instanceType: props.instanceType ?? new ec2.InstanceType('t3.medium'),
         securityGroups: [dbConnectionGroup],
+        vpcSubnets: props.vpcSubnets,
       },
       credentials: {
         username: masterUserSecret.secretValueFromJson('username').toString(),
@@ -279,6 +285,7 @@ export class DatabaseCluster extends Construct {
         dbProxyName: `${Stack.of(this).stackName}-RDSProxy`,
         securityGroups: [dbConnectionGroup],
         role: rdsProxyRole,
+        vpcSubnets: props.vpcSubnets,
       };
 
       // create the RDS proxy