packer.sh

#!/bin/bash
# Exit immediately if a command returns a non-zero status
set -e

# Printing script usage
program_name=$0
usage () {
  echo "usage: $program_name [--env-file google-env-file.json] [--packer-action build]"
  exit 1
}

# Parsing script params
while true; do
  case "$1" in
    --env-file ) env_file="$2"; shift 2 ;;
    --packer-action ) packer_action="$2"; shift 2;;
    * ) break ;;
  esac
done

# Checking script params
if [ -z "$env_file" ]; then
    usage
fi

if [ -z "$packer_action" ]; then
    usage
fi

env_file_path=$(realpath "$env_file")
script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
project_root_path=$(realpath "$script_dir/..")
packer_project_path=$project_root_path/image
default_tfvars_json_path="$project_root_path/terraform.tfvars.json"

# shellcheck source=.tools/extract-and-export.sh
source "$project_root_path"/.tools/extract-and-export.sh "$default_tfvars_json_path"

# shellcheck source=.tools/extract-and-export.sh
source "$project_root_path"/.tools/extract-and-export.sh "$env_file_path"

# shellcheck source=.tools/load-google-auth.sh
source "$project_root_path"/.tools/load-google-auth.sh "$env_file_path"

packer_cmd="packer $packer_action \
  -var region=$GOOGLE_REGION \
  -var zone=$GOOGLE_ZONE \
  -var machine_type=$RUNNER_MACHINE_TYPE \
  -var project_id=$GOOGLE_PROJECT \
  -var path=$packer_project_path \
  $packer_project_path/runner.json"

eval "$packer_cmd"