CDK does not wait for RDS (Serverless V2) writer instance to become available

[angangwa]

Hi, I am using CDK to deploy an RDS Aurora cluster with one read/write serverless v2 instance. I want to wait for the instance to become available before deploying other resources that depend on it. Currently there seem to be no way to do this?

Cloudformation waits for the cluster to become available and then moves on. It takes quite a bit longer after that for the writer instance to come online.

[cogwirrel]

Hello,

I had the same issue recently, I was able to depend on the instance becoming available with the following:

import { DatabaseCluster, CfnDBInstance } from 'aws-cdk-lib/aws-rds';

const cluster = new DatabaseCluster(....);

const instances = cluster.node
      .findAll()
      .filter((child) => child instanceof CfnDBInstance);

myResource.node.addDependency(...instances);