254 lines
8.5 KiB
Python
254 lines
8.5 KiB
Python
# vi: ts=4 expandtab
|
|
#
|
|
# Copyright (C) 2012 Canonical Ltd.
|
|
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
|
|
# Copyright (C) 2012 Yahoo! Inc.
|
|
#
|
|
# Author: Scott Moser <scott.moser@canonical.com>
|
|
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
|
|
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License version 3, as
|
|
# published by the Free Software Foundation.
|
|
#
|
|
# 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/>.
|
|
|
|
from email.mime.multipart import MIMEMultipart
|
|
|
|
import abc
|
|
|
|
from cloudinit import importer
|
|
from cloudinit import log as logging
|
|
from cloudinit import user_data as ud
|
|
from cloudinit import util
|
|
|
|
from cloudinit.filters import launch_index
|
|
|
|
DEP_FILESYSTEM = "FILESYSTEM"
|
|
DEP_NETWORK = "NETWORK"
|
|
DS_PREFIX = 'DataSource'
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class DataSourceNotFoundException(Exception):
|
|
pass
|
|
|
|
|
|
class DataSource(object):
|
|
|
|
__metaclass__ = abc.ABCMeta
|
|
|
|
def __init__(self, sys_cfg, distro, paths, ud_proc=None):
|
|
self.sys_cfg = sys_cfg
|
|
self.distro = distro
|
|
self.paths = paths
|
|
self.userdata = None
|
|
self.metadata = None
|
|
self.userdata_raw = None
|
|
name = util.obj_name(self)
|
|
if name.startswith(DS_PREFIX):
|
|
name = name[len(DS_PREFIX):]
|
|
self.ds_cfg = util.get_cfg_by_path(self.sys_cfg,
|
|
("datasource", name), {})
|
|
if not ud_proc:
|
|
self.ud_proc = ud.UserDataProcessor(self.paths)
|
|
else:
|
|
self.ud_proc = ud_proc
|
|
|
|
def get_userdata(self, apply_filter=False):
|
|
if self.userdata is None:
|
|
self.userdata = self.ud_proc.process(self.get_userdata_raw())
|
|
if apply_filter:
|
|
return self._filter_userdata(self.userdata)
|
|
return self.userdata
|
|
|
|
@property
|
|
def launch_index(self):
|
|
if not self.metadata:
|
|
return None
|
|
if 'launch-index' in self.metadata:
|
|
return self.metadata['launch-index']
|
|
return None
|
|
|
|
def _filter_userdata(self, processed_ud):
|
|
filters = [
|
|
launch_index.Filter(util.safe_int(self.launch_index)),
|
|
]
|
|
new_ud = processed_ud
|
|
for f in filters:
|
|
new_ud = f.apply(new_ud)
|
|
return new_ud
|
|
|
|
@property
|
|
def is_disconnected(self):
|
|
return False
|
|
|
|
def get_userdata_raw(self):
|
|
return self.userdata_raw
|
|
|
|
# the data sources' config_obj is a cloud-config formated
|
|
# object that came to it from ways other than cloud-config
|
|
# because cloud-config content would be handled elsewhere
|
|
def get_config_obj(self):
|
|
return {}
|
|
|
|
def get_public_ssh_keys(self):
|
|
keys = []
|
|
|
|
if not self.metadata or 'public-keys' not in self.metadata:
|
|
return keys
|
|
|
|
if isinstance(self.metadata['public-keys'], (basestring, str)):
|
|
return str(self.metadata['public-keys']).splitlines()
|
|
|
|
if isinstance(self.metadata['public-keys'], (list, set)):
|
|
return list(self.metadata['public-keys'])
|
|
|
|
if isinstance(self.metadata['public-keys'], (dict)):
|
|
for (_keyname, klist) in self.metadata['public-keys'].iteritems():
|
|
# lp:506332 uec metadata service responds with
|
|
# data that makes boto populate a string for 'klist' rather
|
|
# than a list.
|
|
if isinstance(klist, (str, basestring)):
|
|
klist = [klist]
|
|
if isinstance(klist, (list, set)):
|
|
for pkey in klist:
|
|
# There is an empty string at
|
|
# the end of the keylist, trim it
|
|
if pkey:
|
|
keys.append(pkey)
|
|
|
|
return keys
|
|
|
|
def device_name_to_device(self, _name):
|
|
# translate a 'name' to a device
|
|
# the primary function at this point is on ec2
|
|
# to consult metadata service, that has
|
|
# ephemeral0: sdb
|
|
# and return 'sdb' for input 'ephemeral0'
|
|
return None
|
|
|
|
def get_locale(self):
|
|
return 'en_US.UTF-8'
|
|
|
|
@property
|
|
def availability_zone(self):
|
|
return self.metadata.get('availability-zone')
|
|
|
|
def get_instance_id(self):
|
|
if not self.metadata or 'instance-id' not in self.metadata:
|
|
# Return a magic not really instance id string
|
|
return "iid-datasource"
|
|
return str(self.metadata['instance-id'])
|
|
|
|
def get_hostname(self, fqdn=False):
|
|
defdomain = "localdomain"
|
|
defhost = "localhost"
|
|
domain = defdomain
|
|
|
|
if not self.metadata or not 'local-hostname' in self.metadata:
|
|
# this is somewhat questionable really.
|
|
# the cloud datasource was asked for a hostname
|
|
# and didn't have one. raising error might be more appropriate
|
|
# but instead, basically look up the existing hostname
|
|
toks = []
|
|
hostname = util.get_hostname()
|
|
fqdn = util.get_fqdn_from_hosts(hostname)
|
|
if fqdn and fqdn.find(".") > 0:
|
|
toks = str(fqdn).split(".")
|
|
elif hostname:
|
|
toks = [hostname, defdomain]
|
|
else:
|
|
toks = [defhost, defdomain]
|
|
else:
|
|
# if there is an ipv4 address in 'local-hostname', then
|
|
# make up a hostname (LP: #475354) in format ip-xx.xx.xx.xx
|
|
lhost = self.metadata['local-hostname']
|
|
if util.is_ipv4(lhost):
|
|
toks = ["ip-%s" % lhost.replace(".", "-")]
|
|
else:
|
|
toks = lhost.split(".")
|
|
|
|
if len(toks) > 1:
|
|
hostname = toks[0]
|
|
domain = '.'.join(toks[1:])
|
|
else:
|
|
hostname = toks[0]
|
|
|
|
if fqdn:
|
|
return "%s.%s" % (hostname, domain)
|
|
else:
|
|
return hostname
|
|
|
|
def get_package_mirror_info(self):
|
|
return self.distro.get_package_mirror_info(
|
|
availability_zone=self.availability_zone)
|
|
|
|
|
|
def find_source(sys_cfg, distro, paths, ds_deps, cfg_list, pkg_list):
|
|
ds_list = list_sources(cfg_list, ds_deps, pkg_list)
|
|
ds_names = [util.obj_name(f) for f in ds_list]
|
|
LOG.debug("Searching for data source in: %s", ds_names)
|
|
|
|
for cls in ds_list:
|
|
try:
|
|
LOG.debug("Seeing if we can get any data from %s", cls)
|
|
s = cls(sys_cfg, distro, paths)
|
|
if s.get_data():
|
|
return (s, util.obj_name(cls))
|
|
except Exception:
|
|
util.logexc(LOG, "Getting data from %s failed", cls)
|
|
|
|
msg = ("Did not find any data source,"
|
|
" searched classes: (%s)") % (", ".join(ds_names))
|
|
raise DataSourceNotFoundException(msg)
|
|
|
|
|
|
# Return a list of classes that have the same depends as 'depends'
|
|
# iterate through cfg_list, loading "DataSource*" modules
|
|
# and calling their "get_datasource_list".
|
|
# Return an ordered list of classes that match (if any)
|
|
def list_sources(cfg_list, depends, pkg_list):
|
|
src_list = []
|
|
LOG.debug(("Looking for for data source in: %s,"
|
|
" via packages %s that matches dependencies %s"),
|
|
cfg_list, pkg_list, depends)
|
|
for ds_name in cfg_list:
|
|
if not ds_name.startswith(DS_PREFIX):
|
|
ds_name = '%s%s' % (DS_PREFIX, ds_name)
|
|
m_locs = importer.find_module(ds_name,
|
|
pkg_list,
|
|
['get_datasource_list'])
|
|
for m_loc in m_locs:
|
|
mod = importer.import_module(m_loc)
|
|
lister = getattr(mod, "get_datasource_list")
|
|
matches = lister(depends)
|
|
if matches:
|
|
src_list.extend(matches)
|
|
break
|
|
return src_list
|
|
|
|
|
|
# 'depends' is a list of dependencies (DEP_FILESYSTEM)
|
|
# ds_list is a list of 2 item lists
|
|
# ds_list = [
|
|
# ( class, ( depends-that-this-class-needs ) )
|
|
# }
|
|
# It returns a list of 'class' that matched these deps exactly
|
|
# It mainly is a helper function for DataSourceCollections
|
|
def list_from_depends(depends, ds_list):
|
|
ret_list = []
|
|
depset = set(depends)
|
|
for (cls, deps) in ds_list:
|
|
if depset == set(deps):
|
|
ret_list.append(cls)
|
|
return ret_list
|