RDS: add support for creating Proxy endpoints

I have created a rds cluster:

I am trying to create a rds proxy with both reader and read/write endpoints using AWS CDK

Reproduction Steps

I have created a rds proxy using:

    this.rdsCluster = new DatabaseCluster(this, clusterName, {
      clusterIdentifier: clusterName,
      engine: clusterEngine,
      credentials: {
        username: ResourcePropsConstants.RDS_MASTER_USER,
        excludeCharacters: ';',
      },
      instanceProps: {
        instanceType: new InstanceType(RdsUtils.determineInstanceSize(envName)),
        vpc: this.iVpc,
        vpcSubnets: {
          subnetType: SubnetType.PRIVATE,
        },
        securityGroups: [this.iRdsSG],
      },
      storageEncrypted: true,
      backup: {
        retention: Duration.days(RdsUtils.determineRetentionPeriod(envName)),
      },
      parameterGroup: this.parameterGroup,
      deletionProtection: isHigherEnv,
    });
    
    this.rdsProxy = this.rdsCluster.addProxy(dbProxyName, {
      dbProxyName,
      borrowTimeout: Duration.minutes(3),
      maxConnectionsPercent: 85,
      maxIdleConnectionsPercent: 10,
      idleClientTimeout: Duration.minutes(15),
      requireTLS: true,
      secrets: [this.rdsSecret],
      securityGroups: [this.iRdsProxySG],
      vpcSubnets: {
        subnetType: SubnetType.PRIVATE,
      },
      vpc: this.iVpc,
    });

What did you expect to happen?

I am expecting two endpoints to be created in the proxy - one with Read/Write and the other with Read target role. When I manually create a proxy using AWS Console a proxy is created with two endpoints

What actually happened?

Only one endpoint was created with Read/Write target role

Environment

• **CDK CLI Version :1.66
• Framework Version:
• Node.js Version:
• OS :
• Language (Version): – Typescript

Other

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This is 🐛 Bug Report

[skinny85]

Ok. Looks like there’s a resource called AWS::RDS::DBProxyEndpoint. This is probably what’s missing from the DatabaseProxy class today.

You can create them today by using the CfnDBProxyEndpoint from the CDK. I’ll keep this issue open as a feature request to add support for Proxy endpoints to our DatabaseProxy class.

[Jacco]

I am going for the following approach:

On DatabaseProxy:

  public addEndpoint(options: DatabaseProxyEndpointOptions): IDatabaseProxyEndpoint {
    const endpoint = new DatabaseProxyEndpoint(this, 'EndPoint', {
      ...options,
      dbProxy: this,
    });
    this.endpoints.push(endpoint.endpoint);
    return endpoint;
  }

Note to self: I need to add an index to the id to make it unique in the scope