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# vim: set fileencoding=utf-8 :
#
# (C) 2010,2014 Guido Günther <agx@sigxcpu.org>
# 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 logging
import os
import subprocess
try:
import lsb_release
except ImportError:
lsb_release = None
class Distro(object):
"""
A distribution
@cvar id: distro id as returned by lsb-release
"""
id = None
service_blacklist = set()
_pkg_services = {}
_pkg_blacklist = {}
_pkg_service_blacklist = {}
@classmethod
def pkg(klass, name):
"""Return package object named name"""
raise NotImplementedError
@classmethod
def pkg_by_file(klass, path):
"""Return package object that contains path"""
raise NotImplementedError
@classmethod
def restart_service_cmd(klass, service):
"""Command to restart service"""
raise NotImplementedError
@classmethod
def restart_service(klass, service):
"""Restart a service"""
subprocess.call(klass.restart_service_cmd(service))
@classmethod
def is_service_installed(klass, service):
"""Check wether a service exists on the system"""
return True
@classmethod
def pkg_services(klass, pkg):
"""
List of services that package pkg needs restarted that aren't part
of pkg itself
"""
return [ s for s in klass._pkg_services.get(pkg.name, [])
if klass.is_service_installed(s) ]
@classmethod
def pkg_service_blacklist(klass, pkg):
"""
List of services in pkg that we don't want to be restarted even when
a binary from this package maps a shared lib that changed.
"""
return klass._pkg_service_blacklist.get(pkg.name, [])
@classmethod
def has_apt(klass):
"""Does the distribution use apt"""
return False
@staticmethod
def detect():
return detect()
import debiandistro
import redhatdistro
def detect():
"""
Detect the distribution we run on. Returns C{None} if the
distribution is unknown.
"""
id = None
if lsb_release:
id = lsb_release.get_distro_information()['ID']
else:
try:
lsb_cmd = subprocess.Popen(['lsb_release', '--id', '-s'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
output = lsb_cmd.communicate()[0]
if not lsb_cmd.returncode:
id = output.strip()
except OSError:
# id is None in this case
pass
if id == debiandistro.DebianDistro.id:
return debiandistro.DebianDistro
elif id == redhatdistro.FedoraDistro.id:
return redhatdistro.FedoraDistro
else:
if os.path.exists('/usr/bin/dpkg'):
logging.warning("Unknown distro but dpkg found, assuming Debian")
return debiandistro.DebianDistro
elif os.path.exists('/bin/rpm'):
logging.warning("Unknown distro but rpm found, assuming Fedora")
return debiandistro.FedoraDistro
else:
return None
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