Complex Computed Optional Types

[skorfmann]

There are optional computed complex types in the provider schema, e.g. in the aws_security_group the attributes egress / ingress. Here an excerpt from the schema:

             "egress": {
                "type": [
                  "set",
                  [
                    "object",
                    {
                      // ... attributes 
                    }
                  ]
                ],
                "optional": true,
                "computed": true
              },

As I understand optional && computed, this means there could be egress or ingress rules created by AWS. Which, at least for egress is true. However, apparently the AWS Terraform provider removes this computed object (see comment)

At the moment the attribute is rendered without taking into account the computed option, which looks like this:

  // egress
  private _egress?: SecurityGroupEgress[];
  public get egress() {
    return this._egress; // Getting the computed value is not yet implemented
  }
  public set egress(value: SecurityGroupEgress[]) {
    this._egress = value;
  }

We should probably enable access to the those computed rules as well. Something along the lines of this:

  // egress
  private _egress?: SecurityGroupEgress[];
  public get egress(index?: string) {
    return this._egress || return new SecurityGroupEgressList(this, 'egress', index);
  }
  public set egress(value: SecurityGroupEgress[] | undefined) {
    this._egress = value;
  }

We'd have to generate:

• an interface (e.g. SecurityGroupEgress) for the optional type
• a class (e.g. SecurityGroupEgressList) which implements the interface to wrap the computed value
• Make sure the return type of the getter function is intuitively usable

In particular the last point seems to be difficult.

For now it's probably fine as is, but when heading towards beta we should come back to this.

[joatmon08]

For additional context, see hashicorp/terraform-plugin-sdk/issues/282. May be updated in next version of plugin SDK.

[anubhavmishra]

Related: #124

[anubhavmishra]

I will provide a list of providers that can help us prioritize working on this issue.

[github-actions]

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've found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.