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ansible/library/yum

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#!/usr/bin/python -tt
# (c) 2012, Red Hat, Inc
# Written by Seth Vidal <skvidal at fedoraproject.org>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import yum
import subprocess
import datetime
import shlex
import re
import traceback
try:
import json
except ImportError:
import simplejson as json
def yum_base(conf_file=None, cachedir=False):
my = yum.YumBase()
my.preconf.debuglevel=0
if conf_file and os.path.exists(conf_file):
my.preconf.fn = conf_file
if cachedir:
my.setCacheDir()
return my
def pkg_to_dict(po):
d = {
'name':po.name,
'arch':po.arch,
'epoch':po.epoch,
'release':po.release,
'version':po.version,
'repo':po.ui_from_repo,
'_nevra':po.ui_nevra,
}
if type(po) == yum.rpmsack.RPMInstalledPackage:
d['state'] = 'installed'
else:
d['state'] = 'available'
return d
def list_stuff(my, stuff):
if stuff == 'installed':
return [ pkg_to_dict(po) for po in my.rpmdb ]
elif stuff == 'updates':
return [ pkg_to_dict(po) for
po in my.doPackageLists(pkgnarrow='updates').updates ]
elif stuff == 'available':
return [ pkg_to_dict(po) for po in my.pkgSack ]
elif stuff == 'repos':
r = []
for repo in my.repos.repos.values():
t = {}
s = 'disabled'
if repo.enabled:
s = 'enabled'
r[repo.id] = s
r.append(t)
return r
else:
e,m,u = my.rpmdb.matchPackageNames([stuff])
p = e + m
e,m,u = my.pkgSack.matchPackageNames([stuff])
p = p + e + m
return [ pkg_to_dict(po) for po in p ]
def run_yum(command):
try:
cmd = subprocess.Popen(command, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = cmd.communicate()
except (OSError, IOError), e:
rc = 1
err = str(e)
out = ''
except:
rc = 1
err = traceback.format_exc()
out = ''
if out is None:
out = ''
if err is None:
err = ''
else:
rc = cmd.returncode
return rc, out, err
def ensure(my, state, pkgspec):
yumconf = my.conf.config_file_path
if state == 'installed':
pkg = None
# check if pkgspec is installed
if re.search('[></=]',pkgspec):
try:
pkgs = my.returnInstalledPackagesByDep(pkgspec)
except yum.Errors.YumBaseError:
pkgs = None
else:
e,m,u = my.rpmdb.matchPackageNames([pkgspec])
pkgs = e +m
if pkgs:
return { 'changed':False, 'failed':False, 'results':'', 'errors':'' }
# if not - try to install it
my.close()
del my
cmd = 'yum -c %s -d1 -y install %s' % (yumconf, pkgspec)
rc, out, err = run_yum(cmd)
if rc:
changed = False
failed = True
else:
changed = True
failed = False
return {'changed': changed,
'failed': failed,
'results':out,
'errors': err }
if state == 'removed':
# check if pkgspec is installed
# if not return {changed: False, failed=False }
# if so try to remove it:
# if successfull {changed:True, failed=False, results=stdout, errors=stderr }
# if fail {'changed':False, failed='True', results=stdout, errors=stderr }
yumconf = my.conf.config_file_path
if re.search('[></=]',pkgspec):
try:
pkgs = my.returnInstalledPackagesByDep(pkgspec)
except yum.Errors.YumBaseError:
pkgs = None
else:
e,m,u = my.rpmdb.matchPackageNames([pkgspec])
pkgs = e +m
if not pkgs:
return { 'changed':False, 'failed':False, 'results':'', 'errors':'' }
my.close()
del my
cmd = 'yum -c %s -d1 -y remove %s' % (yumconf, pkgspec)
rc, out, err = run_yum(cmd)
if rc:
changed = False
failed = True
else:
changed = True
failed = False
return {'changed': changed,
'failed': failed,
'results':out,
'errors': err }
return {'changed': False,
'failed': True,
'results':'',
'errors': 'Ensure state %r unknown' % state }
def update(args):
#generic update routine
pass
def remove_only(pkgspec):
# remove this pkg and only this pkg - fail if it will require more to remove
pass
def main():
# ensure=installed pkg=pkgspec
# ensure=removed pkg=pkgspec
# list=installed
# list=updates
# list=available
# list=repos
# list=pkgspec
# update="args"?
#
results = {}
args = " ".join(sys.argv[1:])
items = shlex.split(args)
params = {}
for x in items:
(k, v) = x.split("=", 1)
params[k] = v
if 'conf_file' not in params:
params['conf_file'] = None
if 'list' in params:
my = yum_base(conf_file=params['conf_file'], cachedir=True)
results = list_stuff(my, params['list'])
elif 'ensure' in params:
my = yum_base(conf_file=params['conf_file'], cachedir=True)
state = params['ensure']
pkgspec = params['pkg']
results = ensure(my, state, pkgspec)
print json.dumps(results)
if __name__ == "__main__":
main()