/usr/share/pyshared/cobbler/configgen.py is in python-cobbler 2.2.2-0ubuntu33.
This file is owned by root:root, with mode 0o644.
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configgen.py: Generate configuration data.
Copyright 2010 Kelsey Hightower
Kelsey Hightower <kelsey.hightower@gmail.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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
module for generating configuration manifest using ksmeta data,
mgmtclasses, resources, and templates for a given system (hostname)
"""
from Cheetah.Template import Template
from cexceptions import CX
import cobbler.utils
import cobbler.api as capi
import simplejson as json
import string
import utils
import clogger
class ConfigGen:
"""
Generate configuration data for Cobbler's management resources:
repos, ldap, files, packages, and monit. Mainly used by Koan to
configure remote systems.
"""
def __init__(self,hostname):
"""Constructor. Requires a Cobbler API handle."""
self.hostname = hostname
self.handle = capi.BootAPI()
self.system = self.handle.find_system(hostname=self.hostname)
self.host_vars = self.get_cobbler_resource('ks_meta')
self.logger = clogger.Logger("/var/log/cobbler/cobbler.log")
self.mgmtclasses = self.get_cobbler_resource('mgmt_classes')
#----------------------------------------------------------------------
def resolve_resource_var(self,string_data):
"""Substitute variables in strings."""
data = string.Template(string_data).substitute(self.host_vars)
return data
#----------------------------------------------------------------------
def resolve_resource_list(self,list_data):
"""Substitute variables in lists. Return new list."""
new_list = []
for item in list_data:
new_list.append(string.Template(item).substitute(self.host_vars))
return new_list
#----------------------------------------------------------------------
def get_cobbler_resource(self,resource):
"""Wrapper around cobbler blender method"""
return cobbler.utils.blender(self.handle, False, self.system)[resource]
#----------------------------------------------------------------------
def gen_config_data(self):
"""
Generate configuration data for repos, ldap, files,
packages, and monit. Returns a dict.
"""
config_data = {
'repo_data' : self.handle.get_repo_config_for_system(self.system),
'repos_enabled': self.get_cobbler_resource('repos_enabled'),
'ldap_enabled' : self.get_cobbler_resource('ldap_enabled'),
'monit_enabled': self.get_cobbler_resource('monit_enabled')
}
package_set = set()
file_set = set()
for mgmtclass in self.mgmtclasses:
_mgmtclass = self.handle.find_mgmtclass(name=mgmtclass)
for package in _mgmtclass.packages:
package_set.add(package)
for file in _mgmtclass.files:
file_set.add(file)
# Generate LDAP data
if self.get_cobbler_resource("ldap_enabled"):
if self.system.ldap_type in [ "", "none" ]:
utils.die(self.logger, "LDAP management type not set for this system (%s, %s)" % (self.system.ldap_type, self.system.name))
else:
template = utils.get_ldap_template(self.system.ldap_type)
t = Template(file=template, searchList=[self.host_vars])
print t
config_data['ldap_data'] = t.respond()
# Generate Package data
pkg_data = {}
for package in package_set:
_package = self.handle.find_package(name=package)
if _package is None:
raise CX('%s package resource is not defined' % package)
else:
pkg_data[package] = {}
pkg_data[package]['action'] = self.resolve_resource_var(_package.action)
pkg_data[package]['installer'] = _package.installer
pkg_data[package]['version'] = self.resolve_resource_var(_package.version)
if pkg_data[package]['version'] != "":
pkg_data[package]["install_name"] = "%s-%s" % (package, pkg_data[package]['version'])
else:
pkg_data[package]["install_name"] = package
config_data['packages'] = pkg_data
# Generate File data
file_data = {}
for file in file_set:
_file = self.handle.find_file(name=file)
if _file is None:
raise CX('%s file resource is not defined' % file)
file_data[file] = {}
file_data[file]['is_dir'] = _file.is_dir
file_data[file]['action'] = self.resolve_resource_var(_file.action)
file_data[file]['group'] = self.resolve_resource_var(_file.group)
file_data[file]['mode'] = self.resolve_resource_var(_file.mode)
file_data[file]['owner'] = self.resolve_resource_var(_file.owner)
file_data[file]['path'] = self.resolve_resource_var(_file.path)
if not _file.is_dir:
file_data[file]['template'] = self.resolve_resource_var(_file.template)
try:
t = Template(file=file_data[file]['template'], searchList=[self.host_vars])
file_data[file]['content'] = t.respond()
except:
utils.die(self.logger, "Missing template for this file resource %s" % (file_data[file]))
config_data['files'] = file_data
return config_data
#----------------------------------------------------------------------
def gen_config_data_for_koan(self):
"""Encode configuration data. Return json object for Koan."""
json_config_data = json.JSONEncoder(sort_keys=True, indent=4).encode(self.gen_config_data())
return json_config_data
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