Fetch and set environment variables from AWS systems manager param store.

set_params.sh

#!/bin/bash

params=$(aws ssm get-parameters-by-path --region $REGION --with-decryption --path "/path/to/variable" --recursive)
for param in $(echo $params | jq -r ".Parameters[] | @base64"); do
	ORIG_IFS=$IFS
	IFS="/"
	full_name=$(echo $param | base64 --decode | jq -r ".Name")
	read -ra name_components <<< "$full_name"
	IFS=$ORIG_IFS
	var_name=${name_components[-1]}
	printf -v $var_name $(echo $param | base64 --decode | jq -r ".Value")
	export $var_name
done