Importing lambda_alias sets function_name to ARN

[terlar]

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Terraform CLI and Terraform AWS Provider Version

Terraform v0.12.28
AWS Provider v2.70.0

Affected Resource(s)

• aws_lambda_alias

Terraform Configuration Files

resource "aws_lambda_function" "test_lambda" {
  filename      = "lambda_function_payload.zip"
  function_name = "lambda_function_name"
  handler       = "exports.test"

  source_code_hash = filebase64sha256("lambda_function_payload.zip")

  runtime = "nodejs12.x"
}

resource "aws_lambda_alias" "test_lambda_alias" {
  name             = "my_alias"
  description      = "a sample description"
  function_name    = aws_lambda_function.test_lambda.function_name
  function_version = "1"
}

Expected Behavior

terraform state show aws_lambda_alias.test_lambda_alias
# aws_lambda_alias.test_lambda_alias:
resource "aws_lambda_alias" "test_lambda_alias" {
    arn              = "arn:aws:lambda:us-east-1:000000000000:function:lambda_function_name:my_alias"
    function_name    = "lambda_function_name"
    function_version = "1"
    id               = "arn:aws:lambda:us-east-1:000000000000:function:lambda_function_name:my_alias"
    name             = "my_alias"
}

Actual Behavior

terraform state show aws_lambda_alias.test_lambda_alias
# aws_lambda_alias.test_lambda_alias:
resource "aws_lambda_alias" "test_lambda_alias" {
    arn              = "arn:aws:lambda:us-east-1:000000000000:function:lambda_function_name:my_alias"
    function_name    = "arn:aws:lambda:us-east-1:000000000000:function:lambda_function_name"
    function_version = "1"
    id               = "arn:aws:lambda:us-east-1:000000000000:function:lambda_function_name:my_alias"
    name             = "my_alias"
}

Steps to Reproduce

1. terraform apply
2. terraform state rm aws_lambda_alias.test_lambda_alias
3. terraform import aws_lambda_alias.test_lambda_alias lambda_function_name/my_alias

References

Importing an aws_lambda_alias will set function_name to ARN. However this does not work together with aws_lambda_provisioned_concurrency_config. As per the specified ticket.

• Lambda Provisioned Concurrency bug and caveat #11152

[bflad]

Hi @terlar 👋 Thank you for submitting this. This import behavior was fixed with Version 3 of the Terraform AWS Provider since we consider changes like this to be breaking. Once upgraded, this automatic switch from name to ARN should no longer be an issue during import. 👍

[terlar]

Oh, what are the odds, sorry, should have checked that a new version was released, I just installed the latest one the other week, so wasn't aware of this. Thank you for fixing it!

[terlar]

BTW, that link doesn't work for me, just a white page, is it something wrong on my end? I see this for the whole https://registry.terraform.io

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!