How do I pass object(list) to string(list) - Terraform

Question

I want to pass a list with 2 objects to lambda_name as an array variable, lambda_name must receive my_app and my_app_2 key name, example:

variable "lambda" {
  type = object({
    my_app = object({
      name = string
    })
    my_app_2 = object({
      name = string
    })
  })
  description = "Lambda Function required values"
}

data "external" "lambdas" {
    program = ["bash", "scripts/random.sh"]

    query = {
        lambda_name  = (["${var.lambda.my_app.name}", "${var.lambda.my_app_2.name}"])
        environment = var.environment
    }
}

The error i got:

Inappropriate value for attribute "query": element "lambda_name": string required.

Answer 1

Solution:

data "external" "lambdas" {
    program = ["bash", "scripts/random.sh"]

    query = {
        lambda_name = "${var.lambda.my_app.name} ${var.lambda.my_app_2.name}"
        environment = var.environment
    }
}

on scripts/random.sh, i'm using lambda_name as array variable.

#!/bin/bash

set -e

eval "$(jq -r '@sh "export LAMBDA_NAME=\(.lambda_name)"')"

for lambda in ${LAMBDA_NAME[@]}; do echo $lambda; done