#!/bin/bash
# Copyright (C) 2012
# Authors:
# Angus Salkeld
# Steven Dake
# ASL2.0

# sleep 1 = systemd's definition of start is different from mine


action=$1
if [ -z "$action" ]
then
	echo "openstack [start|stop|install|erase]"
	echo ""
        echo "This tool is designed to control OpenStack on a Fedora 16/17 system"
	echo ""
        echo "start - Starts OpenStack"
	echo "stop - Stops OpenStack"
	echo "install - Installs a fresh OpenStack system with Keystone from RPM repostories"
	echo "erase - permanently destroys an existing installation of OpenStack"
fi

function os_start() {
	action=start
	sudo systemctl $action qpidd.service mysqld.service
	sleep 1
	sudo systemctl $action openstack-keystone.service tgtd.service
	sleep 1
	for svc in api registry
	do
		sudo systemctl $action openstack-glance-$svc.service
	done
	sudo vgcreate nova-volumes $(sudo losetup --show -f /var/lib/nova/nova-volumes.img)
	for svc in api objectstore compute network volume scheduler cert
	do
	       sudo systemctl $action openstack-nova-$svc.service
	done
}

function os_stop() {
	action=stop
	sudo systemctl $action openstack-keystone.service tgtd.service
	for svc in api objectstore compute network volume scheduler cert
	do
	       sudo systemctl $action openstack-nova-$svc.service
	done
	for svc in api registry
	do
		sudo systemctl $action openstack-glance-$svc.service
	done
}

function os_erase() {
	os_stop
	sleep 1
	sudo rm -f /var/lib/libvirt/qemu/save/instance-000*
	sudo rm -f /var/lib/libvirt/qemu/instance-000*
	for iii in /usr/lib/systemd/system/openstack-*.service; do sudo systemctl stop $(basename $iii); done
	sudo yum erase -y python-glance python-nova* python-keystone* openstack-swift* openstack-dashboard

	sudo systemctl start mysqld.service
	sleep 1

cat << EOF | mysql -u root -p
DROP USER 'nova'@'localhost';
DROP USER 'nova'@'%';
DROP USER 'keystone'@'localhost';
DROP USER 'keystone'@'%';
DROP USER 'glance'@'localhost';
DROP USER 'glance'@'%';
DROP DATABASE nova;
DROP DATABASE keystone;
DROP DATABASE glance;
flush privileges;
EOF

	sudo vgchange -an nova-volumes
	sudo losetup -d /dev/loop0
	sudo rm -f /var/lib/nova/nova-volumes.img
	sudo rm -rf /etc/{glance,nova,swift,keystone,openstack-dashboard} /var/lib/{glance,nova,swift,keystone} /var/log/{glance,nova,swift,keystone} /var/run/{glance,nova,swift,keystone}
	rm -f $HOME/.openstack/.keystonerc
}



function os_install() {
	sudo yum install -y openstack-nova openstack-glance openstack-keystone openstack-dashboard scsi-target-utils
	sudo dd if=/dev/zero of=/var/lib/nova/nova-volumes.img bs=1M seek=20k count=0
	sudo systemctl start mysqld.service
	sleep 1
	# Configure the databases
	sudo openstack-nova-db-setup
	sudo openstack-glance-db-setup
	sudo openstack-keystone-db-setup

	# Create a keystone RC file
	mkdir -p $HOME/.openstack
	cat > $HOME/.openstack/keystonerc <<EOF
export ADMIN_TOKEN=$(openssl rand -hex 10)
export OS_USERNAME=admin
export OS_PASSWORD=verybadpass
export OS_TENANT_NAME=admin
export OS_AUTH_URL=http://127.0.0.1:5000/v2.0/
export OS_AUTH_STRATEGY=keystone
EOF
	# Install keystone catalog
	source $HOME/.openstack/keystonerc
	sudo openstack-config-set /etc/keystone/keystone.conf DEFAULT admin_token $ADMIN_TOKEN
	sudo systemctl start openstack-keystone.service
	sleep 1

	sudo ADMIN_PASSWORD=$OS_PASSWORD SERVICE_PASSWORD=servicepass openstack-keystone-sample-data

	# Configure nova to use keystone
	sudo openstack-config-set /etc/nova/api-paste.ini filter:authtoken admin_tenant_name service
	sudo openstack-config-set /etc/nova/api-paste.ini filter:authtoken admin_user nova
	sudo openstack-config-set /etc/nova/api-paste.ini filter:authtoken admin_password servicepass
	sudo openstack-config-set /etc/nova/nova.conf DEFAULT auth_strategy keystone
	# Configure glance to use keystone
	sudo openstack-config-set /etc/glance/glance-api.conf paste_deploy flavor keystone
	sudo openstack-config-set /etc/glance/glance-registry.conf paste_deploy flavor keystone
	sudo openstack-config-set /etc/glance/glance-api-paste.ini filter:authtoken admin_tenant_name service
	sudo openstack-config-set /etc/glance/glance-api-paste.ini filter:authtoken admin_user glance
	sudo openstack-config-set /etc/glance/glance-api-paste.ini filter:authtoken admin_password servicepass
	sudo openstack-config-set /etc/glance/glance-registry-paste.ini filter:authtoken admin_tenant_name service
	sudo openstack-config-set /etc/glance/glance-registry-paste.ini filter:authtoken admin_user glance
	sudo openstack-config-set /etc/glance/glance-registry-paste.ini filter:authtoken admin_password servicepass

	os_stop
	sleep 1
	sudo rm -rf /var/log/{glance,nova,swift,keystone}/*
	os_start
	sleep 1
	echo "Installation Complete."
	echo "Testing nova and glance.  If any errors are displayed, the install failed."
	nova flavor-list
	glance index
	echo "note: This tool does not create a network.  Creating a network"
	echo "depends on your environment.  An example network create operation:"
	echo
	echo "sudo nova-manage network create demonet 10.0.0.0/24 1 256 --bridge=demonetbr0"
	echo
	echo "The network range here, should *not* be the one used on your existing physical network."
	echo "It should be a range dedicated for the network that OpenStack will configure. So if"
	echo "10.0.0.0/24 clashes with your local network, pick another range."

}

case $action in
	"")
		;;
	start)
		os_start
		;;
	stop)
		os_stop
		;;
	erase)
		os_erase
		;;
	install)
		os_install
		;;
	*)
		echo "The action \"$action\" is not supported."
	;;
esac