Invalid type for Security Groups

[pabloandres13]

security_groups config is defined to be a single string value

We try to run our terraform code today without changing anything and we start getting this error:

Error: Incorrect attribute value type
in resource "aws_lb" "main":
7:   security_groups    = aws_security_group.main[0].id
 Inappropriate value for attribute "security_groups": set of string required.

Steps to reproduce

• Create a module:
  module "alb_for_service_x" {
  source = "umotif-public/alb/aws"
  version = "~> 2.2"

  name_prefix = "app"
  load_balancer_type = "application"
  internal = false
  vpc_id = var.vpc_id
  subnets = var.public_subnets_ids
  description = "Load Balancer - Managed by Terraform"
  }

• run terraform plan

• After that we get an error in the console

I just look further and find out that maybe our provider version dont match and that's why we get the error

terraform {
  required_version = "~>1.4"
  backend "http" {
  }
  required_providers {
    aws = {
      version = "~> 4.45"
    }
  }
}

I think maybe this change is what is affecting us

From: aws_security_group.main.*.id
to:  aws_security_group.main[0].id
 
 Commit: https://github.com/umotif-public/terraform-aws-alb/commit/721450c96caaf8c01e5e703a950d1d1ce603eb52

The security groups should be set as an array/set

Affected vesion 2.2?

In version 2.0 and 2.1 it works

[pabloandres13]

I just opened a pull request

[pabloandres13]

@marcincuber @Ohid25 @umotif-olascu @Mohammed-afk91 could you please take a look. :-D

Thank you and sorry for disturbing. your day. :-D