#!/usr/bin/python
#
#    Fetch the availabity zone and create the sources.list
#    Copyright 2009 Canonical Ltd.
#
#    Author: Chuck Short <chuck.short@canonical.com>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
import os
import subprocess
from Cheetah.Template import Template

import ec2init

def main():
    ec2 = ec2init.EC2Init()

	mirror = ec2.get_mirror_for_availability_zone()

	if not os.path.exists("/var/run/ec2/sources.lists"):
		t = os.popen("lsb_release -cs").read()
		codename = t.strip()

		mp = { 'mirror' : mirror, 'codename' : codename }
		t = Template(file='/etc/ec2-init/templates/sources.list.tmpl', searchList=[mp])
		f = open("/var/run/ec2/sources.list", "w")
		f.write(t.respond())
		f.close()

	if not os.path.exists("/etc/apt/sources.list-ec2-init"):
		os.rename('/etc/apt/sources.list', '/etc/apt/sources.list-ec2-init')
		os.symlink('/var/run/ec2/sources.list', '/etc/apt/sources.list')
        aptget = subprocess.Popen(['apt-get', 'update'])
        aptget.communicate()

if __name__ == '__main__':
    main()