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#!/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 sys
import urllib
from Cheetah.Template import Template
def detectZone():
api_ver = '2008-02-01'
metadat = None
base_url = 'http://169.254.169.254/%s/meta-data' % api_ver
zone = urllib.urlopen('%s/placement/availability-zone' % base_url).read()
if zone.startswith("us"):
archive = "http://us.ec2.archive.ubuntu.com/ubuntu/"
elif zone.startswith("eu"):
archive = "http://eu.ec2.archive.ubuntu.com/ubuntu/"
return(archive)
t = os.popen("lsb_release -c").read()
codename = t.split()
mirror = detectZone()
distro = codename[1]
mp = {'mirror' : mirror, 'codename' : distro}
t = Template(file="/etc/ec2-init/templates/sources.list.tmpl", searchList=[mp])
f = open("/var/run/ec2/sources.list", "w")
f.write('%s' %(t))
f.close()
os.system("mv /etc/apt/sources.list /etc/apt/sources.list-ec2-init")
os.system("ln -s /var/run/ec2/sources.list /etc/apt/sources.list")
os.system("apt-get update 2>&1 > /dev/null")
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