Members of complex object outputs of modules are reported as unresolved if output referenzes object from array

Installation details

• IDE version (Help->About->Copy to Clipboard): 2019.3.3 Ultimate
• intellij-hcl plugin version (Settings->Plugins) 0.7.7
• Terraform version (terraform -v) Terraform v0.12.20, provider.aws v2.52.0

Terraform Configuration Files

Module output defined with a resource object in a module:

variable "enabled" {
  default = true
}
resource "aws_s3_bucket" {
  count = var.enabled ? 1 : 0
  ...
}
output "bucket" {
  value= var.enabled ? aws_s3_bucket.this_bucket[0] : null
}

and then referenced a member of the modules output object:

module "test" {}

local {
   test= module.test.bucket.bucket
}

Exception

Unresolved reference bucket

Expected Behavior

Members of complex outputs (e.g. ressources) from an array should not be reported as unresolved.

Actual Behavior

terraform apply properly works IDEA displays validation error “Unresolved reference <attribute>”. This seems to have already been partially fixed with 0.7.2 (see #213) however it is still happening for this case with 0.7.7.

[VladRassokhin]

@albuch Seems it’s unresolved due to ternary operator, works fine in case of

output "bucket" {
 value= aws_s3_bucket.this_bucket[0]
}

[systematicguy]

I have a slightly different use case when I employ a proxy local for the terraform_remote_state data:

data "terraform_remote_state" "backend_infra" {
  backend = "s3"
  config = {
    bucket = var.backend_bucket
    key    = var.backend_key
    region = "eu-central-1"
  }
}

locals {
  backend_outputs = data.terraform_remote_state.backend_infra.outputs
  deployment_stage = local.backend_outputs.deployment_stage
}

Wherever I use the proxy local (I do this for sake of brevity on multiple places) it gets highlighted with the same Unresolved reference error.

IDE: 2022.2.3 (Build #PY-222.4345.23, built on October 10, 2022) HCL Plugin: 222.4345.14 Terraform version: 0.13.5

FWIW, this issue got me thinking: https://github.com/VladRassokhin/intellij-hcl/issues/108#issuecomment-329997796

At the same time ‘unresolved reference’ doesn’t highlight that code as error since ‘terraform_remote_state’ specially marked to contain dynamic properties.

It would be ideal to be able to somehow mark locals to contain dynamic properties