[s3] Add replication configuration to existing S3 bucket

❓ General Issue

The Question

I’m trying to assign replication configuration to existing S3 bucket using the code:

const cfnBucket = bucket.node.defaultChild as s3.CfnBucket;

    cfnBucket.replicationConfiguration = {
      role: replicationRole.roleName,
      rules:[
        {
          destination:{
            bucket: bucket.bucketName
          },
          prefix: "target_prefix",
          status: "Enabled",
          filter: {
            prefix: "source_prefix"
          }
        }
      ]
    }

Getting error at cdk synth: Cannot set property ‘replicationConfiguration’ of undefined

If I create bucket from the CDK code - template synth is working fine.

Is there any workaround to do the trick?

Environment

• CDK CLI Version: 1.63.0 (build 7a68125)
• Module Version:
• Node.js Version: v14.8.0
• OS: OSX 10.14.6
• Language (Version): TypeScript

Other information

[iliapolo]

@SZubarev You can set it up just like you did, but not on an imported bucket. That is, if you create your bucket inside the same cdk app:

const bucket = new s3.Bucket(this, 'Bucket)

Then you use the escape hatch just like you did.

If you need to setup replication configuration on an already existing bucket, you’d need to use the AwsCustomResource and invoke the appropriate API call using the AWS JavaScript SDK.

A separate CFN template will also not help because you won’t be able to include an existing bucket into a CFN template (this is also why CDK doesn’t support it).

[SomayaB]

Closing this issue since it seems to be resolved. Feel free to reopen.