Self-Managed Kafka Event Source Mapping: Optionally specify consumer_group_id upon resource creation

[A122943]

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Description

Adds "self_managed_kafka_config" (SelfManagedKafkaEventSourceConfig) and "amazon_managed_kafka_config" (AmazonManagedKafkaEventSourceConfig) blocks to "aws_lambda_event_source_mapping" resource

Enables setting Kafka ConsumerGroupId upon resource creation

• "The identifier for the Kafka consumer group to join. The consumer group ID must be unique among all your Kafka event sources. After creating a Kafka event source mapping with the consumer group ID specified, you cannot update this value."

New or Affected Resource(s)

• aws_lambda_event_source_mapping

Potential Terraform Configuration

resource "aws_lambda_event_source_mapping" "self_managed" {
  function_name     = aws_lambda_function.example.arn
  topics            = ["Example"]
  starting_position = "TRIM_HORIZON"

  # begin new syntax
  self_managed_kafka_config {
    consumer_group_id = "some-id"
  }
  # end

  self_managed_event_source {
    endpoints = {
      KAFKA_BOOTSTRAP_SERVERS = "kafka1.example.com:9092,kafka2.example.com:9092"
    }
  }

  source_access_configuration {
    type = "VPC_SUBNET"
    uri  = "subnet:subnet-example1"
  }
}

resource "aws_lambda_event_source_mapping" "msk" {
  event_source_arn  = aws_msk_cluster.example.arn
  function_name     = aws_lambda_function.example.arn
  topics            = ["Example"]
  starting_position = "TRIM_HORIZON"

  # begin new syntax
  amazon_managed_kafka_config {
    consumer_group_id = "some-id"
  }
  # end
}

References

• 2022/08 feature release announcement
• https://awscli.amazonaws.com/v2/documentation/api/latest/reference/lambda/create-event-source-mapping.html (search for ConsumerGroupId)
• SelfManagedKafkaEventSourceConfig
• AmazonManagedKafkaEventSourceConfig

Discussion

• Despite sharing ConsumerGroupId, the Amazon-managed Kafka event source does not interface with SelfManagedKafkaEventSourceConfig, it uses AmazonManagedKafkaEventSourceConfig.

[github-actions]

This functionality has been released in v4.29.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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