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ansible/packaging/apt
James Cammarata c48fc23d75 Use low-level package objects in the apt module to check installed state 
Packages which are half-installed are not adequately represented by
the .is_installed field of the apt.package.Package object. By using the
lower-level apt_pkg.Package object (which provides the .current_state
field), we can check for a partially-installed state more accurately.

Fixes #3421
2013-09-11 23:33:59 -05:00

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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). Shell like wildcards (fnmatch) like apt* are also supported.
required: false
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" ]
cache_valid_time:
description:
- If C(update_cache) is specified and the last run is less or equal than I(cache_valid_time) seconds ago, the C(update_cache) gets skipped.
required: false
default: "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"]
requirements: [ python-apt, aptitude ]
author: Matthew Williams
notes:
- Three of the upgrade modes (C(full), C(safe) and its alias C(yes)) require C(aptitude), otherwise
C(apt-get) suffices.
'''
EXAMPLES = '''
# Update repositories cache and install "foo" package
- apt: pkg=foo update_cache=yes
# Remove "foo" package
- apt: pkg=foo state=absent
# Install the package "foo"
- apt: pkg=foo state=present
# Install the version '1.00' of package "foo"
- apt: pkg=foo=1.00 state=present
# Update the repository cache and update package "nginx" to latest version using default release squeeze-backport
- apt: pkg=nginx state=latest default_release=squeeze-backports update_cache=yes
# Install latest version of "openjdk-6-jdk" ignoring "install-reccomends"
- apt: pkg=openjdk-6-jdk state=latest install_recommends=no
# Update all packages to the latest version
- apt: upgrade=dist
# Run the equivalent of "apt-get update" as a separate step
- apt: update_cache=yes
# Only run "update_cache=yes" if the last one is more than more than 3600 seconds ago
- apt: update_cache=yes cache_valid_time=3600
'''
import traceback
# added to stave off future warnings about apt api
import warnings
warnings.filterwarnings('ignore', "apt API not stable yet", FutureWarning)
import os
import datetime
import fnmatch
# APT related constants
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."
APT_LISTS_PATH = "/var/lib/apt/lists"
APT_UPDATE_SUCCESS_STAMP_PATH = "/var/lib/apt/periodic/update-success-stamp"
HAS_PYTHON_APT = True
try:
import apt
import apt_pkg
except:
HAS_PYTHON_APT = False
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:
# get the package from the cache, as well as the
# the low-level apt_pkg.Package object which contains
# state fields not directly acccesible from the
# higher-level apt.package.Package object.
pkg = cache[pkgname]
ll_pkg = cache._cache[pkgname] # the low-level package object
except KeyError:
if state == 'install':
m.fail_json(msg="No package matching '%s' is available" % pkgname)
else:
return False, False, False
try:
has_files = len(pkg.installed_files) > 0
except AttributeError:
has_files = False # older python-apt cannot be used to determine non-purged
if version:
try :
return ll_pkg.current_state == apt_pkg.CURSTATE_INSTALLED and \
fnmatch.fnmatch(pkg.installed.version, version), False, has_files
except AttributeError:
#assume older version of python-apt is installed
return ll_pkg.current_state == apt_pkg.CURSTATE_INSTALLED and \
fnmatch.fnmatch(pkg.installedVersion, version), False, has_files
else:
try :
return ll_pkg.current_state == apt_pkg.CURSTATE_INSTALLED, pkg.is_upgradable, has_files
except AttributeError:
#assume older version of python-apt is installed
return ll_pkg.current_state == apt_pkg.CURSTATE_INSTALLED, pkg.isUpgradable, has_files
def expand_pkgspec_from_fnmatches(m, pkgspec, cache):
new_pkgspec = []
for pkgname_or_fnmatch_pattern in pkgspec:
# note that any of these chars is not allowed in a (debian) pkgname
if [c for c in pkgname_or_fnmatch_pattern if c in "*?[]!"]:
if "=" in pkgname_or_fnmatch_pattern:
m.fail_json(msg="pkgname wildcard and version can not be mixed")
# handle multiarch pkgnames, the idea is that "apt*" should
# only select native packages. But "apt*:i386" should still work
if not ":" in pkgname_or_fnmatch_pattern:
matches = fnmatch.filter(
[pkg.name for pkg in cache
if not ":" in pkg.name], pkgname_or_fnmatch_pattern)
else:
matches = fnmatch.filter(
[pkg.name for pkg in cache], pkgname_or_fnmatch_pattern)
if len(matches) == 0:
m.fail_json(msg="No package(s) matching '%s' available" % str(pkgname_or_fnmatch_pattern))
else:
new_pkgspec.extend(matches)
else:
new_pkgspec.append(pkgname_or_fnmatch_pattern)
return new_pkgspec
def install(m, pkgspec, cache, upgrade=False, default_release=None, install_recommends=True, force=False):
packages = ""
pkgspec = expand_pkgspec_from_fnmatches(m, pkgspec, cache)
for package in pkgspec:
name, version = package_split(package)
installed, upgradable, has_files = 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 = ''
if m.check_mode:
check_arg = '--simulate'
else:
check_arg = ''
cmd = "%s %s -y %s %s %s install %s" % (APT_ENVVARS, APT_GET_CMD, DPKG_OPTIONS, force_yes, check_arg, packages)
if default_release:
cmd += " -t '%s'" % (default_release,)
if not install_recommends:
cmd += " --no-install-recommends"
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, has_files = package_status(m, name, version, cache, state='remove')
if installed or (has_files and purge):
packages += "'%s' " % package
if len(packages) == 0:
m.exit_json(changed=False)
else:
if purge:
purge = '--purge'
else:
purge = ''
cmd = "%s %s -q -y %s %s remove %s" % (APT_ENVVARS, APT_GET_CMD, DPKG_OPTIONS, 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", force=False):
if m.check_mode:
check_arg = '--simulate'
else:
check_arg = ''
apt_cmd = None
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"
if force:
force_yes = '--force-yes'
else:
force_yes = ''
apt_cmd_path = m.get_bin_path(apt_cmd, required=True)
cmd = '%s %s -y %s %s %s %s' % (APT_ENVVARS, apt_cmd_path, DPKG_OPTIONS,
force_yes, 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'),
cache_valid_time = dict(type='int'),
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
)
if not HAS_PYTHON_APT:
module.fail_json(msg="Could not import python modules: apt, apt_pkg. Please install python-apt package.")
global APTITUDE_CMD
APTITUDE_CMD = module.get_bin_path("aptitude", False)
global APT_GET_CMD
APT_GET_CMD = module.get_bin_path("apt-get")
p = module.params
if not APTITUDE_CMD and p.get('upgrade', None) in [ 'full', 'safe', 'yes' ]:
module.fail_json(msg="Could not find aptitude. Please ensure it is installed.")
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']:
# Default is: always update the cache
cache_valid = False
if p['cache_valid_time']:
tdelta = datetime.timedelta(seconds=p['cache_valid_time'])
try:
mtime = os.stat(APT_UPDATE_SUCCESS_STAMP_PATH).st_mtime
except:
mtime = False
if mtime is False:
# Looks like the update-success-stamp is not available
# Fallback: Checking the mtime of the lists
try:
mtime = os.stat(APT_LISTS_PATH).st_mtime
except:
mtime = False
if mtime is False:
# No mtime could be read - looks like lists are not there
# We update the cache to be safe
cache_valid = False
else:
mtimestamp = datetime.datetime.fromtimestamp(mtime)
if mtimestamp + tdelta >= datetime.datetime.now():
# dont update the cache
# the old cache is less than cache_valid_time seconds old - so still valid
cache_valid = True
if cache_valid is not True:
cache.update()
cache.open(progress=None)
if not p['package'] and not p['upgrade']:
module.exit_json(changed=False)
force_yes = p['force']
if p['upgrade']:
upgrade(module, p['upgrade'], force_yes)
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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