[Enhancement]: Include bootstrap server URL in aws_msk_serverless_cluster resource attributes

[Telemaco019]

Description

Despite #28005 being closed, the resource aws_msk_serverless_cluster still doesn't expose the bootstrap server URL in its attributes.

This means that, when using Terraform for creating MSK Serverless Clusters, the following workaround is required to get the URL for connecting with the cluster:

# Create the MSK Serverless Cluster
resource "aws_msk_serverless_cluster" "main" {
  cluster_name = "my-cluster"
  ...
}

# Fetch the created MSK Serverless Cluster, as `aws_msk_serverless_cluster` does not include
# the boostrap broker URLs in its attributes 
data "aws_msk_bootstrap_brokers" "main" {
  cluster_arn = aws_msk_serverless_cluster.main.arn
}

# Output: URL for connecting with the Kafka cluster
output "aws_msk_bootstrap_server_url" {
  value = data.aws_msk_bootstrap_brokers.main.bootstrap_brokers_sasl_iam
}

It would be way more convenient if the resource aws_msk_bootstrap_server_url just included the bootstrap URLs in its attributes.

Affected Resource(s) and/or Data Source(s)

aws_msk_serverless_cluster

Potential Terraform Configuration

# Create the MSK Serverless Cluster
resource "aws_msk_serverless_cluster" "main" {
  cluster_name = "my-cluster"
  ...
}

# Output: URL for connecting with the Kafka cluster
output "aws_msk_bootstrap_server_url" {
  value = aws_msk_serverless_cluster.main.bootstrap_brokers_sasl_iam
}

References

https://docs.aws.amazon.com/msk/1.0/apireference/clusters-clusterarn-bootstrap-brokers.html
https://docs.aws.amazon.com/cli/latest/reference/kafka/get-bootstrap-brokers.html

Would you like to implement a fix?

Yes

[github-actions]

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[HaykManukyanAvetiky]

Please also add Data for MSK serverless cluster , currently it is missing. The general cluster block for msk is not working with serverless

[HaykManukyanAvetiky]

Also please look at kafka connect as well, currently it is working only with peovisioned cluster, there should be serverless option added to kafka_cluster Block