lookup default value for soft delete policy results in Error

[vdcadena553]

TL;DR

On a multi-bucket configuration, adding a soft_delete_policy configuration block like so:

soft_delete_policy = {
"bucket1" = {
// Disable protection on this bucket
retention_duration_seconds = 0
}
"bucket2" = {
// Increase protection to the max value (90 days)
retention_duration_seconds = 7776000
}
}
; results in the following error:

│ Error: Invalid function argument
│
│ on .terraform/modules/gcs.cloud_storage/main.tf line 160, in resource "google_storage_bucket" "buckets":
│ 160: for_each = [lookup(var.soft_delete_policy, each.value, {})]
│ ├────────────────
│ │ while calling lookup(inputMap, key, default...)
│
│ Invalid value for "default" parameter: the default value must have the same
│ type as the map elements.

Expected behavior

The module should allow to create a soft_delete block for a multibucket configuration without issues.

There is a PR opened to solve this #318

Observed behavior

The buckets should have the correct soft_delete retention time when deployed

Terraform Configuration

module "db_storage_buckets" {
  source     = "terraform-google-modules/cloud-storage/google"
  project_id =  "projectid"
  version    = "~>6.0"
  prefix     = "es-leg-uat"
  names      = ["backups", "tranlogs", "worm-backups", "worm-tranlogs"]
  location   = "US"

  soft_delete_policy = {
    "backups" = {
      retention_time_in_seconds = 0
    },
    "worm-tranlogs" = {
      retention_time_in_seconds = 0
    },
    "worm-backups" = {
      retention_time_in_seconds = 0
    },
    "tranlogs" ={
      retention_time_in_seconds = 0
    }
  }
}

Terraform Version

1.8.5

Additional information

No response

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