hooks.new.v1.sh

#!/bin/bash
set -u

back="\e[0m"
red="\e[1;31m"
green="\e[1;32m"
yellow="\e[1;33m"
blue="\e[1;34m"
purple="\e[1;35m"
cyan="\e[1;36m"


panic() {
	printf >&2 "${red}THIS KIT IS BROKEN{$back}\n"
	echo >&2 "$*"
	exit 2
}

is_ipv4() {
	echo "${1:-}" | grep -q '[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+'
	return $?
}

VCENTER_IP=
prompt_for_iaas_vsphere() {
	while true; do
		printf "What is your ${cyan}vCenter IP${back}?\n"
		printf "> "
		read -r VCENTER_IP
		if [[ -n $VCENTER_IP ]]; then
			printf "using vcenter ip '${VCENTER_IP}'\n"
			printf "\n\n"
			return
		fi
	done
}

IAAS=
prompt_for_iaas() {
	printf "Blacksmith will deploy its own BOSH director to\n"
	printf "facilitate the deployment of standalone services.\n"
	printf "To do so, it needs  to know what IaaS to target\n\n"

	printf "${red}NOTE: BLACKSMITH CURRENTLY ONLY SUPPORT${back} ${purple}VSPHERE${back}\n\n"

	IAAS=vsphere

	case "${IAAS}" in
	vsphere) prompt_for_iaas_vsphere ;;
	*) panic "unhandled iaas '${IAAS}'"
	esac
}

FORGE_LIST=
prompt_for_forges() {
	try=1
	while true; do
		if [[ $try == 1 ]]; then
			printf "Blacksmith Forges allow you to deploy different\n"
			printf "types of services, on-demand.  This kit provides\n"
			printf "builtin support for the following:\n\n"

			printf "  ${green}redis${back})       Redis Key-Value store (persistent or cache)\n"
			printf "  ${green}postgresql${back})  PostgreSQL standalone and clustered databases\n"
			printf "  ${green}rabbitmq${back})    RabbitMQ message bus clusters\n\n"

			printf "Which ${cyan}Blacksmith Forges${back} would you like to activate?\n"
			printf "(separate multiple forges with spaces)\n"
		fi
		try=$(( try + 1 ))

		printf "> "
		read -r FORGE_LIST
		if [[ -n $FORGE_LIST ]]; then
			local ok=1
			for f in $FORGE_LIST; do
				case "${f}" in
				redis|postgresql|rabbitmq) ;;
				*) printf >&2 "  ${red}error${back}: unrecognized forge ${red}${f}${back}\n"
				   ok=0
				esac
			done
			if [[ $ok == 1 ]]; then
				return
			fi
			printf "\n"
		fi
	done
}

BROKER_IP=
prompt_for_broker_ip() {
	while true; do
		printf "What ${cyan}static IP${back} do you want Blacksmith to live at?\n"
		printf "> "
		read -r BROKER_IP
		if [[ -n $BROKER_IP ]] && is_ipv4 $BROKER_IP; then
			printf "using broker ip '${BROKER_IP}'\n"
			printf "\n"
			return
		fi
	done
}

prompt_for_iaas
prompt_for_broker_ip
prompt_for_forges

echo; echo; echo
printf "Generating your ${purple}new Genesis Environment${back}...\n\n\n"

cat <<EOF
---
kit:
  features:
    - $IAAS
EOF
for forge in $FORGE_LIST; do
  echo "    - $forge"
done
cat <<EOF

params:
  ip: $BROKER_IP
EOF