build-vm

#!/bin/bash
# vi: fdm=marker

# Constants {{{1
################################################################

export W4MVM_KEYBOARD=qwerty
export W4MVM_SHOW=no
export W4MVM_VERSION=dev
export W4MVM_NAME=
export W4MVM_TOOLS=all
HALT=no
WAIT=no

# Print help {{{1
################################################################

function print_help {
	echo "Usage: build-vm [options]"
	echo
	echo "Builds the W4M virtual machine."
	echo
	echo "Options:"
	echo "   -a, --azerty         Set AZERTY keyboard. The default keyboard is QWERTY."
	echo "   -H, --halt           Halt the machine after building it."
	echo "   -h, --help           Print this help message."
	echo "   -n, --name           Set the name of the virtual machine. If unset, Vagrant will set a semi-random name itself."
	echo "   -p, --prod           Builds a production machine, using official released versions of tools. By default the branch used for developing is used to extract tool code."
	echo "   -s, --show           Show VM screen. By default it is hidden."
	echo "   -w, --wait           Wait for Galaxy to be up."
}

# Read args {{{1
################################################################

function read_args {

	local args="$*" # save arguments for debugging purpose
	
	# Read options
	while true ; do
		case $1 in
			-a|--azerty)        W4MVM_KEYBOARD=azerty ;;
			-H|--halt)          HALT=yes ;;
			-h|--help)          print_help ; exit 0 ;;
			-n|--name)          W4MVM_NAME="$2" ; shift ;;
			-p|--prod)          W4MVM_VERSION=prod ;;
			-s|--show)          W4MVM_SHOW=yes ;;
			-t|--tool)          W4MVM_TOOLS="$2" ; shift ;;
			-w|--wait)          WAIT=yes ;;
			-) error "Illegal option $1." ;;
			--) error "Illegal option $1." ;;
			--*) error "Illegal option $1." ;;
			-?) error "Unknown option $1." ;;
			-[^-]*) split_opt=$(echo $1 | sed 's/^-//' | sed 's/\([a-zA-Z]\)/ -\1/g') ; set -- $1$split_opt "${@:2}" ;;
			*) break
		esac
		shift
	done
	shift $((OPTIND - 1))
}

# Wait for Galaxy {{{1
################################################################

function wait_for_galaxy {

	echo
	echo "****************************************************************"
	echo "Wait for Galaxy to be up and running"
	echo

	wget=$(which wget)
	if [[ $? -ne 0 ]] ; then
		echo "You need to install wget in order to wait for Galaxy readiness." >&2
		exit 1
	fi

	# Wait for Galaxy
	wait_time=10
	n=1
	while true ; do

		# Wait some time
		echo
		echo Wait $wait_time seconds...
		sleep $wait_time

		# Ping Galaxy
		echo
		echo "Ping Galaxy (try number $n)..."
		if wget --tries=1 -O galaxy_page.html http://localhost:8080 ; then
			echo
			echo "Galaxy has started."
			rm galaxy_page.html
			break
		fi

		# Increment count
		n=$((n+1))
	done
}

# MAIN {{{1
################################################################

read_args "$@"

# Remove machine of the same name if it exists
echo
echo "****************************************************************"
echo "Destroy existing machine ${W4MVM_NAME}"
echo
vagrant destroy -f ${W4MVM_NAME} || exit 1
[[ -z $(VBoxManage list vms | grep '^"'${W4MVM_NAME}'"') ]] || VBoxManage unregistervm --delete ${W4MVM_NAME} || exit 1

# Build and start machine
echo
echo "****************************************************************"
echo "Build and start machine ${W4MVM_NAME}"
echo
vagrant up ${W4MVM_NAME} || exit 1

# Wait for Galaxy
[[ $WAIT == yes || $HALT == yes ]] && wait_for_galaxy

# Halt machine
if [[ $HALT == yes ]] ; then
	echo
	echo "****************************************************************"
	echo "Halt machine ${W4MVM_NAME}"
	echo
	vagrant halt ${W4MVM_NAME} || exit 1
fi