vms/cache.sh

#!/usr/bin/env bash
set -eo pipefail

files=()

# shellcheck disable=SC2044
for vars in $(find distros/ -name '*.pkrvars.hcl'); do
  file=$(echo var.iso.url | packer console -var-file="${vars}" -config-type=hcl2 sources/)
  base="$(basename "${file}")"
  if [ -e "cache/${base}" ]; then
    echo "Found cache/${base} already"
  else
    files+=("--retry" "3" "--retry-all-errors" "-O" "${file}")
  fi
done

mkdir -p cache
pushd cache
echo "Downloading ${files[*]}"
curl --parallel -L "${files[@]}"
popd