#!/bin/bash
# Check that the environment variable has been set correctly if [ -z “$S3_CONFIG_BUCKET” ]; then
echo >&2 'error: missing S3_CONFIG_BUCKET environment variable' exit 1
fi if [ -z “$S3_CONFIG_ENVIRONMENT” ]; then
echo >&2 'error: missing S3_CONFIG_ENVIRONMENT environment variable' exit 1
fi if [ -z “$S3_CONFIG_REVISION” ]; then
echo >&2 'error: missing S3_CONFIG_REVISION environment variable' exit 1
fi
# Load the S3 secrets file contents into the environment variables function load_config {
local prefix="" local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034') aws s3 cp s3://${S3_CONFIG_BUCKET}/${S3_CONFIG_ENVIRONMENT}/${S3_CONFIG_REVISION}.yml - | sed -ne "s|^\($s\):|\1|" \ -e "s|^\($s\)\($w\)$s:$s[\"']\(.*\)[\"']$s\$|\1$fs\2$fs\3|p" \ -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p" | awk -F$fs '{ indent = length($1)/2; vname[indent] = $2; for (i in vname) {if (i > indent) {delete vname[i]}} if (length($3) > 0) { vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")} printf("%s%s%s=\"%s\"\n", "'$prefix'",vn, $2, $3); } }' | sed 's/^/export /'
} eval $(load_config)