Terraform Tricks

terraform_tricks.md

Returns a JSON result for External Data Sourcce

data "external" "generate_secret" {
  program = ["bash", "${path.module}/get-name.sh"]

  query = {
    my_name      = "John"
    my_middle_name = "Doe"
  }
}

# get-name.sh
function output_json(){
  # the stdin for external datasource is a JSON object
  eval "$(jq -r '@sh "NAME=\(.my_name) MIDDLE_NAME=\(.my_middle_name)"')"
   # some logic
  jq -n \
    --arg name "${NAME}" \
    --arg mid_name "${MIDDLE_NAME}" \
    '{"name":$name, "middle_name":$mid_name}' 
}