build-pkr-tf.sh

#!/bin/bash

# Check if ami-control exists
# CHK_PKR_CTRL=$(jq -r '.builds[-1].artifact_id' images/ami-control/manifest.json | cut -d ":" -f2 2>/dev/null)
# CHK_PKR_CTRL=$(echo $?)

# Check if ami-managed exists
# CHK_PKR_MNG=$(jq -r '.builds[-1].artifact_id' images/ami-managed/manifest.json | cut -d ":" -f2 2>/dev/null)
# CHK_PKR_MNG=$(echo $?)

# If packer image already built then skips to provisioning with terraform
# if [ $CHK_PKR_CTRL -eq 0 ] && [ $CHK_PKR_MNG -eq 0 ]; then
if [ -e "images/ami-control/manifest.json" ] && [ -e "images/ami-managed/manifest.json" ]; 
then
  echo "images already built";
else
# Packer initialized and images built concurrently,
#|NOTE: the (cd ..) executes command relative to given directory, and "&" runs process in background
(cd images/ami-control/ && packer init . && packer build .)& 
(cd images/ami-managed/ && packer init . && packer build .)& 
fi
# the "wait" command will wait until previous process done before going to next line 
wait

# terraform initialized 
(cd terraform/ && terraform init && terraform validate) 
(cd terraform/ && terraform plan && terraform apply --auto-approve);

echo done;
#|NOTE: in VScode editor, need to open second shell because shell used to run this script will freeze when done