156 lines
4.5 KiB
Python
156 lines
4.5 KiB
Python
#
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# Common code for the EC2 configuration files in Ubuntu
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# Copyright (C) 2008-2010 Canonical Ltd.
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#
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# Author: Chuck Short <chuck.short@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import yaml
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import re
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import ec2init
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import subprocess
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import os
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per_instance="once-per-instance"
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class CloudConfig():
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cfgfile = None
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handlers = { }
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cfg = None
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def __init__(self,cfgfile):
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print "reading %s" % cfgfile
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self.cfg=read_conf(cfgfile)
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import pprint; pprint.pprint(self.cfg)
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self.cloud = ec2init.EC2Init()
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self.cloud.get_data_source()
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self.add_handler('apt-update-upgrade', self.h_apt_update_upgrade)
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self.add_handler('config-ssh')
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def add_handler(self, name, handler=None, freq=None):
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if handler is None:
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try:
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handler=getattr(self,'h_%s' % name.replace('-','_'))
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except:
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raise Exception("Unknown hander for name %s" %name)
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if freq is None:
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freq = per_instance
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self.handlers[name]= { 'handler': handler, 'freq': freq }
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def get_handler_info(self, name):
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return(self.handlers[name]['handler'], self.handlers[name]['freq'])
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def check_for_updates(self):
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value = self.cfg['apt_update']
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return value
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def check_for_upgrade(self):
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value = self.cfg['apt_upgrade']
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return value
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def parse_ssh_keys(self):
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disableRoot = self.cfg['disable_root']
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if disableRoot == 'true':
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value = 'disabled_root'
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return value
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else:
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ec2Key = self.cfg['ec2_fetch_key']
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if ec2Key != 'none':
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value = 'default_key'
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return value
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else:
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return ec2Key
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def add_ppa(self):
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#value = self.cfg['apt_sources']
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for ent in self.cfg['apt_sources']:
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ppa = ent['source']
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where = ppa.find('ppa:')
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if where != -1:
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return ppa
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def add_custom_repo(self):
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sources = []
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value = self.cfg['apt_sources']
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for ent in self.cfg['apt_sources']:
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if ent.has_key('keyserver'):
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keyserver = ent['keyserver']
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if ent.has_key('keyid'):
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keyid = ent['keyid']
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if ent.has_key('filename'):
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filename = ent['filename']
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source = ent['source']
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if source.startswith("deb"):
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sources.append(source)
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return (keyserver,sources,keyid,filename)
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def handle(self, name, args):
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handler = None
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freq = None
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try:
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(handler, freq) = self.get_handler_info(name)
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except:
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raise Exception("Unknown config key %s\n", name)
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self.cloud.sem_and_run(name, freq, handler, [ name, args ])
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def h_apt_update_upgrade(self,name,args):
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update = get_cfg_option_bool(self.cfg, 'apt_update', False)
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upgrade = get_cfg_option_bool(self.cfg, 'apt_upgrade', False)
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print "update = %s , upgrade = %s\n" % (update,upgrade)
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if update or upgrade:
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#retcode = subprocess.call(list)
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subprocess.Popen(['apt-get', 'update']).communicate()
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if upgrade:
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e=os.environ.copy()
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e['DEBIAN_FRONTEND']='noninteractive'
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subprocess.Popen(['apt-get', 'upgrade', '--assume-yes'], env=e).communicate()
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return(True)
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def h_config_ssh(self,name,args):
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print "Warning, not doing anything for config %s" % name
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def h_config_ec2_ebs_mounts(self,name,args):
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print "Warning, not doing anything for config %s" % name
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def h_config_setup_raid(self,name,args):
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print "Warning, not doing anything for config %s" % name
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def h_config_runurl(self,name,args):
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print "Warning, not doing anything for config %s" % name
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def get_cfg_option_bool(yobj, key, default=False):
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print "searching for %s" % key
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if not yobj.has_key(key): return default
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val = yobj[key]
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if yobj[key] in [ True, '1', 'on', 'yes', 'true']:
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return True
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return False
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def get_cfg_option_str(yobj, key, default=None):
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if not yobj.has_key(key): return default
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return yobj[key]
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def read_conf(fname):
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stream = file(fname)
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conf = yaml.load(stream)
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stream.close()
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return conf
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