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ansible/library/apt
Serge van Ginderachter 4a729ebf3a apt module: part rewrite of the upgrade logic, consistently checking 
the executable paths, adding 'safe' as an alias to yes, and adding
'full' to allow aptitude full-upgrade as an alternative to apt-get
dist-upgrade
2013-04-11 23:03:47 +02:00

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Python
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Flowroute LLC
# Written by Matthew Williams <matthew@flowroute.com>
# Based on yum module written by Seth Vidal <skvidal at fedoraproject.org>
#
# This module 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 software 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 software. If not, see <http://www.gnu.org/licenses/>.
#
DOCUMENTATION = '''
---
module: apt
short_description: Manages apt-packages
description:
- Manages I(apt) packages (such as for Debian/Ubuntu).
version_added: "0.0.2"
options:
pkg:
description:
- A package name or package specifier with version, like C(foo) or C(foo=1.0)
required: true
default: null
state:
description:
- Indicates the desired package state
required: false
default: present
choices: [ "latest", "absent", "present" ]
update_cache:
description:
- Run the equivalent of C(apt-get update) before the operation. Can be run as part of the package installation or as a separate step
required: false
default: "no"
choices: [ "yes", "no" ]
purge:
description:
- Will force purging of configuration files if the module state is set to I(absent).
required: false
default: "no"
choices: [ "yes", "no" ]
default_release:
description:
- Corresponds to the C(-t) option for I(apt) and sets pin priorities
required: false
default: null
install_recommends:
description:
- Corresponds to the C(--no-install-recommends) option for I(apt), default behavior works as apt's default behavior, C(no) does not install recommended packages. Suggested packages are never installed.
required: false
default: "yes"
choices: [ "yes", "no" ]
force:
description:
- If C(yes), force installs/removes.
required: false
default: "no"
choices: [ "yes", "no" ]
upgrade:
description:
- 'If yes or safe, performs an aptitude safe-upgrade.'
- 'If full, performs an aptitude full-upgrade.'
- 'If dist, performs an apt-get dist-upgrade.'
- 'Note: This does not upgrade a specific package, use state=latest for that.'
version_added: "1.1"
required: false
default: "yes"
choices: [ "yes", "safe", "full", "dist"]
author: Matthew Williams
notes: []
examples:
- code: "apt: pkg=foo update_cache=yes"
description: Update repositories cache and install C(foo) package
- code: "apt: pkg=foo state=removed"
description: Remove C(foo) package
- code: "apt: pkg=foo state=installed"
description: Install the package C(foo)
- code: "apt: pkg=foo=1.00 state=installed"
description: Install the version '1.00' of package C(foo)
- code: "apt: pkg=nginx state=latest default_release=squeeze-backports update_cache=yes"
description: Update the repository cache and update package C(ngnix) to latest version using default release C(squeeze-backport)
- code: "apt: pkg=openjdk-6-jdk state=latest install_recommends=no"
description: Install latest version of C(openjdk-6-jdk) ignoring C(install-reccomends)
- code: "apt: upgrade=dist"
description: Update all packages to the latest version
- code: "apt: update_cache=yes"
description: Run the equivalent of C(apt-get update) as a separate step
requirements: [ python-apt, aptitude ]
'''
import traceback
# added to stave off future warnings about apt api
import warnings
warnings.filterwarnings('ignore', "apt API not stable yet", FutureWarning)
# APT related constants
APTITUDE_CMD = "aptitude"
APT_GET_CMD = "apt-get"
APT_ENVVARS = "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical"
DPKG_OPTIONS = '-o "Dpkg::Options::=--force-confdef" -o "Dpkg::Options::=--force-confold"'
APT_GET_ZERO = "0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded."
APTITUDE_ZERO = "0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded."
def package_split(pkgspec):
parts = pkgspec.split('=')
if len(parts) > 1:
return parts[0], parts[1]
else:
return parts[0], None
def package_status(m, pkgname, version, cache, state):
try:
pkg = cache[pkgname]
except KeyError:
if state == 'install':
m.fail_json(msg="No package matching '%s' is available" % pkgname)
else:
return False, False
if version:
try :
return pkg.is_installed and pkg.installed.version == version, False
except AttributeError:
#assume older version of python-apt is installed
return pkg.isInstalled and pkg.installedVersion == version, False
else:
try :
return pkg.is_installed, pkg.is_upgradable
except AttributeError:
#assume older version of python-apt is installed
return pkg.isInstalled, pkg.isUpgradable
def install(m, pkgspec, cache, upgrade=False, default_release=None, install_recommends=True, force=False):
packages = ""
for package in pkgspec:
name, version = package_split(package)
installed, upgradable = package_status(m, name, version, cache, state='install')
if not installed or (upgrade and upgradable):
packages += "'%s' " % package
if len(packages) != 0:
if force:
force_yes = '--force-yes'
else:
force_yes = ''
cmd = "%s --option Dpkg::Options::=--force-confold -q -y %s install %s" % (APT_GET, force_yes, packages)
if default_release:
cmd += " -t '%s'" % (default_release,)
if not install_recommends:
cmd += " --no-install-recommends"
if m.check_mode:
m.exit_json(changed=True)
rc, out, err = m.run_command(cmd)
if rc:
m.fail_json(msg="'apt-get install %s' failed: %s" % (packages, err))
else:
m.exit_json(changed=True)
else:
m.exit_json(changed=False)
def remove(m, pkgspec, cache, purge=False):
packages = ""
for package in pkgspec:
name, version = package_split(package)
installed, upgradable = package_status(m, name, version, cache, state='remove')
if installed:
packages += "'%s' " % package
if len(packages) == 0:
m.exit_json(changed=False)
else:
purge = ''
if purge:
purge = '--purge'
cmd = "%s -q -y %s remove %s" % (APT_GET, purge,packages)
if m.check_mode:
m.exit_json(changed=True)
rc, out, err = m.run_command(cmd)
if rc:
m.fail_json(msg="'apt-get remove %s' failed: %s" % (packages, err))
m.exit_json(changed=True)
def upgrade(m, mode="yes"):
if m.check_mode:
check_arg = '--simulate'
else:
check_arg = ''
if mode == "dist":
# apt-get dist-upgrade
apt_cmd = APT_GET_CMD
upgrade_command = "dist-upgrade"
elif mode == "full":
# aptitude full-upgrade
apt_cmd = APTITUDE_CMD
upgrade_command = "full-upgrade"
else:
# aptitude safe-upgrade # mode=yes # default
apt_cmd = APTITUDE_CMD
upgrade_command = "safe-upgrade"
apt_cmd_path = m.get_bin_path(apt_cmd, required=True)
cmd = '%s %s -y %s %s %s' % (APT_ENVVARS, apt_cmd_path, DPKG_OPTIONS,
check_arg, upgrade_command)
rc, out, err = m.run_command(cmd)
if rc:
m.fail_json(msg="'%s %s' failed: %s" % (apt_cmd, upgrade_command, err))
m.fail_json(msg="'aptitude safe-upgrade' failed: %s" % err)
if (apt_cmd == APT_GET_CMD and APT_GET_ZERO in out) or (apt_cmd == APTITUDE_CMD and APTITUDE_ZERO in out):
m.exit_json(changed=False, msg=out)
m.exit_json(changed=True, msg=out)
def main():
module = AnsibleModule(
argument_spec = dict(
state = dict(default='installed', choices=['installed', 'latest', 'removed', 'absent', 'present']),
update_cache = dict(aliases=['update-cache'], type='bool'),
purge = dict(default='no', type='bool'),
package = dict(default=None, aliases=['pkg', 'name']),
default_release = dict(default=None, aliases=['default-release']),
install_recommends = dict(default='yes', aliases=['install-recommends'], type='bool'),
force = dict(default='no', type='bool'),
upgrade = dict(choices=['yes', 'safe', 'full', 'dist'])
),
mutually_exclusive = [['package', 'upgrade']],
required_one_of = [['package', 'upgrade', 'update_cache']],
supports_check_mode = True
)
try:
import apt
import apt_pkg
except:
module.fail_json(msg="Could not import python modules: apt, apt_pkg. Please install python-apt package.")
p = module.params
install_recommends = p['install_recommends']
try:
cache = apt.Cache()
if p['default_release']:
apt_pkg.config['APT::Default-Release'] = p['default_release']
# reopen cache w/ modified config
cache.open(progress=None)
if p['update_cache']:
cache.update()
cache.open(progress=None)
if not p['package']:
module.exit_json(changed=False)
force_yes = p['force']
if p['upgrade']:
upgrade(module, p['upgrade'])
packages = p['package'].split(',')
latest = p['state'] == 'latest'
for package in packages:
if package.count('=') > 1:
module.fail_json(msg="invalid package spec: %s" % package)
if latest and '=' in package:
module.fail_json(msg='version number inconsistent with state=latest: %s' % package)
if p['state'] == 'latest':
install(module, packages, cache, upgrade=True,
default_release=p['default_release'],
install_recommends=install_recommends,
force=force_yes)
elif p['state'] in [ 'installed', 'present' ]:
install(module, packages, cache, default_release=p['default_release'],
install_recommends=install_recommends,force=force_yes)
elif p['state'] in [ 'removed', 'absent' ]:
remove(module, packages, cache, p['purge'])
except apt.cache.LockFailedException:
module.fail_json(msg="Failed to lock apt for exclusive operation")
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
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