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ansible/library/apt

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#!/usr/bin/python -tt
# -*- 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 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 seperate step
required: false
default: "no"
choices: [ "yes", "no" ]
purge:
description:
- Will force purging of configuration files if the module state is set to C(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: "no"
choices: [ "yes", "no" ]
force:
description:
- If C(yes), force installs/removes.
required: false
default: "no"
choices: [ "yes", "no" ]
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 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-recomands)
'''
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
APT_PATH = "/usr/bin/apt-get"
APT = "DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical %s" % APT_PATH
def run_apt(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 = ''
else:
rc = cmd.returncode
return rc, out, err
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):
try:
pkg = cache[pkgname]
except KeyError:
m.fail_json(msg="No package matching '%s' is available" % pkgname)
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)
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, force_yes,packages)
if default_release:
cmd += " -t '%s'" % (default_release,)
if not install_recommends:
cmd += " --no-install-recommends"
rc, out, err = run_apt(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)
if installed:
packages += "'%s' " % package
if len(packages) == 0:
m.exit_json(changed=False)
else:
purge = '--purge' if purge else ''
cmd = "%s -q -y %s remove %s" % (APT, purge,packages)
rc, out, err = run_apt(cmd)
if rc:
m.fail_json(msg="'apt-get remove %s' failed: %s" % (packages, err))
m.exit_json(changed=True)
def main():
module = AnsibleModule(
argument_spec = dict(
state = dict(default='installed', choices=['installed', 'latest', 'removed', 'absent', 'present']),
update_cache = dict(default='no', choices=['yes', 'no'], aliases=['update-cache']),
purge = dict(default='no', choices=['yes', 'no']),
package = dict(default=None, aliases=['pkg', 'name']),
default_release = dict(default=None, aliases=['default-release']),
install_recommends = dict(default='yes', aliases=['install-recommends'], choices=['yes', 'no']),
force = dict(default='no', choices=['yes', 'no'])
)
)
try:
import apt
import apt_pkg
except:
module.fail_json(msg="Could not import python modules: apt, apt_pkg. Please install python-apt package.")
if not os.path.exists(APT_PATH):
module.fail_json(msg="Cannot find apt-get")
p = module.params
if p['package'] is None and p['update_cache'] != 'yes':
module.fail_json(msg='pkg=name and/or update_cache=yes is required')
install_recommends = module.boolean(p['install_recommends'])
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 module.boolean(p['update_cache']):
cache.update()
cache.open(progress=None)
if p['package'] == None:
module.exit_json(changed=False)
force_yes = module.boolean(p['force'])
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, purge = module.boolean(p['purge']))
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()
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