Missing dependency between domain and access policy resources

While troubleshooting a domain permission error, I found out the missing dependency was the root cause.

Line 266 in f479250

domain_name = var.domain_name

Problem is exhibited when creating a cluster from scratch with the variables set as following:

create_access_policy = true

access_policy_statements = {
  iam = {
    principals = [
      {
        type        = "AWS"
        identifiers = ["*"]
      }
    ]
    actions = ["es:ESHttp*"]
  }
}

My best guess is aws_opensearch_domain_policy.this[0] is changed while aws_opensearch_domain.this[0] is still being changed.

what exactly is the issue or the error that you are receiving?

Terraform code:

...
  enable_access_policy = true
  # Access policy
  access_policy_statements = [
    {
      effect = "Allow"

      principals = [{
        type        = "*"
        identifiers = ["*"]
      }]

      actions = ["es:*"]

      condition = [{
        test     = "IpAddress"
        variable = "aws:SourceIp"
        values   = ["127.0.0.1/32"]
      }]
    }
  ]
...

Terraform apply output:

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # module.opensearch.module.opensearch.aws_opensearch_domain_policy.this[0] will be created
  + resource "aws_opensearch_domain_policy" "this" {
      + access_policies = jsonencode(
            {
              + Statement = [
                  + {
                      + Action    = "es:*"
                      + Effect    = "Allow"
                      + Principal = "*"
                      + Resource  = "arn:aws:es:eu-central-1:11*******03:domain/opensearch-domain/*"
                    },
                ]
              + Version   = "2012-10-17"
            }
        )
      + domain_name     = "opensearch-domain"
      + id              = (known after apply)
    }

Plan: 1 to add, 0 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

module.opensearch.module.opensearch.aws_opensearch_domain_policy.this[0]: Creating...
╷
│ Error: updating OpenSearch Domain Policy (): ValidationException: Apply a restrictive access policy to your domain
│ 
│   with module.opensearch.module.opensearch.aws_opensearch_domain_policy.this[0],
│   on .terraform/modules/opensearch.opensearch/main.tf line 263, in resource "aws_opensearch_domain_policy" "this":
│  263: resource "aws_opensearch_domain_policy" "this" {

The problem is in local create_access_policy variable rule. It is require access_policy_override_policy_documents and access_policy_source_policy_documents variables.

Thanks!

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