oci_core_drg_route_distribution_statement does not (but should) allow empty list match_criteria

[jeliker1]

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Terraform Version and Provider Version

erraform v1.12.2
on darwin_arm64

• provider registry.terraform.io/oracle/oci v7.27.0

Affected Resource(s)

affected_resources = oci_core_drg_route_distribution_statement
affected_resources = terraform

Terraform Configuration Files

resource "oci_core_drg_route_distribution_statement" "test_drg_route_distribution_statement" {
    #Required
    drg_route_distribution_id = var.drg_route_distribution_id
    action = "ACCEPT"

    dynamic "match_criteria" {
        for_each = var.match_criteria
        content {
            match_type = match_criteria.value.match_type

            #Optional
            attachment_type   = lookup(match_criteria.value, "attachment_type", null)
            drg_attachment_id = lookup(match_criteria.value, "drg_attachment_id", null)
            priority          = lookup(match_criteria.value, "priority", null)
        }
    }
}

Debug Output

╷
│ Error: Insufficient match_criteria blocks
│ 
│   on test.tf line 14, in resource "oci_core_drg_route_distribution_statement" "drg_route_distribution_statements":
│   14: resource "oci_core_drg_route_distribution_statement" "test_drg_route_distribution_statement" {
│ 
│ At least 1 "match_criteria" blocks are required.

Panic Output

Expected Behavior

Optional attribute match_criteria may be excluded if the intention is to match "all".

Actual Behavior

Optional attribute 'match_criteriamust be included or an error will be thrown by the provider. Additionally,match_criteriamust have at least one match statement (i.e. it is not good enough to have an emptymatch_criteria` block)

Steps to Reproduce

1. terraform apply
2. Note the error if var.match_criteria = []
3. Add at least one match_criteria block to the list and note error does not occur. Note that default distribution list "ALL" created when DRG is created does not have match_criteria (has empty list)

Important Factoids

References

• API reference for route distribution statements showing list size of 0 is acceptable
  https://docs.oracle.com/en-us/iaas/api/#/en/iaas/20160918/datatypes/AddDrgRouteDistributionStatementDetails