terraform-provider-aws: aws_appstream_image_builder throws error with empty domain_join_info

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Terraform CLI and Terraform AWS Provider Version

Terraform v1.2.1 on darwin_amd64

• provider registry.terraform.io/hashicorp/aws v4.29.0
• provider registry.terraform.io/hashicorp/external v2.2.2
• provider registry.terraform.io/hashicorp/local v2.2.3
• provider registry.terraform.io/hashicorp/null v3.1.1
• provider registry.terraform.io/hashicorp/random v3.4.2
• provider registry.terraform.io/hashicorp/time v0.8.0

Affected Resource(s)

• aws_appstream_image_builder

Terraform Configuration Files

Please include all Terraform configurations required to reproduce the bug. Bug reports without a functional reproduction may be closed without investigation.

resource "aws_appstream_image_builder" "image_builder" {
  # Image Builder only needs to be created in nonprod and the created image can be shared with prod account
  count                          = var.create_appstream_image_builder ? 1 : 0
  name                           = "My-Image-Builder"
  description                    = "AppStream Image Builder"
  display_name                   = "AppStream Image Builder"
  enable_default_internet_access = false
  image_name                     = "My Image Builder"
  instance_type                  = "stream.standard.medium"

  vpc_config {
    security_group_ids = [module.appstream_sg.security_group_id]
    subnet_ids         = [local.primary_private_subnet_ids[0]]
  }
}

Debug Output

│ Error: error setting domain_join_info for AppStream ImageBuilder (My-Image-Builder): domain_join_info: ‘’: source data must be an array or slice, got map │ │ with module.persistent.aws_appstream_image_builder.image_builder[0], │ on …/…/modules/persistent/appstream.tf line 6, in resource “aws_appstream_image_builder” “image_builder”: │ 6: resource “aws_appstream_image_builder” “image_builder” {

Panic Output

Expected Behavior

AppStream Image Builder should be created without errors

Actual Behavior

AppStream image builder resource fails during terraform plan phase with: error domain_join_info: '': source data must be an array or slice, got map

Steps to Reproduce

1. terraform plan

Important Factoids

This error did not occur with hashicorp aws provider version v4.20.0

References

• #0000