Consider mapping JSON schema `ipv4` and `ipv6` formats to `iptypes` custom types

[austinvalle]

Use Cases or Problem Statement

JSON schema (the backbone of all the request/response body schemas in OpenAPI 3.0/3.1) supports designating a type: string as an IPv4 or IPv6 address string via the format field: https://json-schema.org/understanding-json-schema/reference/string#ip-addresses.

Recently, HashiCorp has published terraform-plugin-framework-nettypes, which contains an iptypes package with IPv4Address and IPv6Address custom string types, which provide validation and semantic equality handling (for IPv6) that are often required for IP address strings. The Provider code specification already supports custom types.

Proposal

Proposal

• For any string types that define a format of ipv4, add the iptypes.IPv4AddressType type and iptypes.IPv4Address value to the custom type in the outputted provider code spec.

Schema

ipv4_prop:
  description: IPv4 address string!
  type: string
  format: ipv4

IR Attribute

{
  "name": "ipv4_prop",
  "string": {
    "computed_optional_required": "computed",
    "description": "IPv4 address string!",
    "custom_type": {
      "import": {
        "path": "github.com/hashicorp/terraform-plugin-framework-nettypes/iptypes"
      },
      "type": "iptypes.IPv4AddressType",
      "value_type": "iptypes.IPv4Address"
    }
  }
}

• For any string types that define a format of ipv6, add the iptypes.IPv6AddressType type and iptypes.IPv6Address value to the custom type in the outputted provider code spec.

Schema

ipv6_prop:
  description: IPv6 address string!
  type: string
  format: ipv6

IR Attribute

{
  "name": "ipv6_prop",
  "string": {
    "computed_optional_required": "computed",
    "description": "IPv6 address string!",
    "custom_type": {
      "import": {
        "path": "github.com/hashicorp/terraform-plugin-framework-nettypes/iptypes"
      },
      "type": "iptypes.IPv6AddressType",
      "value_type": "iptypes.IPv6Address"
    }
  }
}

Additional Information

No response

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