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Fix 'yum skips updates' bug (#21113)

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* Fix 'yum skips updates' bug

When the 'yum check-update' output is parsed, the regex used
to stitch wrapped lines together would fail on the first package.

It would fail because there is an empty line before the first
package, and this triggered the regex. To avoid a more complicated
regex, preprocess the check-update output to strip out any
empty lines.

The regex is also updated to include a group on the non whitespace
match to be used in the sub.

Add test cases based on info provided in the bug reports.

Fixes #20608
This commit is contained in:
Adrian Likins 2017-02-08 16:07:43 -05:00 committed by GitHub
parent fda131504b
commit e511326222
2 changed files with 227 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

67
lib/ansible/modules/packaging/os/yum.py
View file

@ -844,6 +844,53 @@ def remove(module, items, repoq, yum_basecmd, conf_file, en_repos, dis_repos, in
return res
def run_check_update(module, yum_basecmd):
# run check-update to see if we have packages pending
rc, out, err = module.run_command(yum_basecmd + ['check-update'])
return rc, out, err
def parse_check_update(check_update_output):
updates = {}
# remove incorrect new lines in longer columns in output from yum check-update
# yum line wrapping can move the repo to the next line
#
# Meant to filter out sets of lines like:
# some_looooooooooooooooooooooooooooooooooooong_package_name 1:1.2.3-1.el7
# some-repo-label
#
# But it also needs to avoid catching lines like:
# Loading mirror speeds from cached hostfile
#
# ceph.x86_64 1:11.2.0-0.el7 ceph
# preprocess string and filter out empty lines so the regex below works
out = re.sub('\n[^\w]\W+(.*)', ' \1',
check_update_output)
available_updates = out.split('\n')
# build update dictionary
for line in available_updates:
line = line.split()
# ignore irrelevant lines
# '*' in line matches lines like mirror lists:
# * base: mirror.corbina.net
# len(line) != 3 could be junk or a continuation
#
# FIXME: what is the '.' not in line conditional for?
if '*' in line or len(line) != 3 or '.' not in line[0]:
continue
else:
pkg, version, repo = line
name, dist = pkg.rsplit('.', 1)
updates.update({name: {'version': version, 'dist': dist, 'repo': repo}})
return updates
def latest(module, items, repoq, yum_basecmd, conf_file, en_repos, dis_repos, installroot='/'):
res = {}
@ -862,26 +909,13 @@ def latest(module, items, repoq, yum_basecmd, conf_file, en_repos, dis_repos, in
if '*' in items:
update_all = True
# run check-update to see if we have packages pending
rc, out, err = module.run_command(yum_basecmd + ['check-update'])
rc, out, err = run_check_update(module, yum_basecmd)
if rc == 0 and update_all:
res['results'].append('Nothing to do here, all packages are up to date')
return res
elif rc == 100:
# remove incorrect new lines in longer columns in output from yum check-update
out=re.sub('\n\W+', ' ', out)
available_updates = out.split('\n')
# build update dictionary
for line in available_updates:
line = line.split()
# ignore irrelevant lines
# FIXME... revisit for something less kludgy
if '*' in line or len(line) != 3 or '.' not in line[0]:
continue
else:
pkg, version, repo = line
name, dist = pkg.rsplit('.', 1)
updates.update({name: {'version': version, 'dist': dist, 'repo': repo}})
updates = parse_check_update(out)
elif rc == 1:
res['msg'] = err
res['rc'] = rc
@ -920,6 +954,7 @@ def latest(module, items, repoq, yum_basecmd, conf_file, en_repos, dis_repos, in
nothing_to_do = False
break
# this contains the full NVR and spec could contain wildcards
# or virtual provides (like "python-*" or "smtp-daemon") while
# updates contains name only.

176
test/units/modules/packaging/os/test_yum.py Normal file
View file

@ -0,0 +1,176 @@
# -*- coding: utf-8 -*-
from ansible.compat.tests import unittest
from ansible.modules.packaging.os import yum
yum_plugin_load_error = """
Plugin "product-id" can't be imported
Plugin "search-disabled-repos" can't be imported
Plugin "subscription-manager" can't be imported
Plugin "product-id" can't be imported
Plugin "search-disabled-repos" can't be imported
Plugin "subscription-manager" can't be imported
"""
# from https://github.com/ansible/ansible/issues/20608#issuecomment-276106505
wrapped_output_1 = """
Загружены модули: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.h1host.ru
* extras: mirror.h1host.ru
* updates: mirror.h1host.ru
vms-agent.x86_64 0.0-9 dev
"""
# from https://github.com/ansible/ansible/issues/20608#issuecomment-276971275
wrapped_output_2 = """
Загружены модули: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.corbina.net
* extras: mirror.corbina.net
* updates: mirror.corbina.net
empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty.x86_64
0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1-0
addons
libtiff.x86_64 4.0.3-27.el7_3 updates
"""
# From https://github.com/ansible/ansible/issues/20608#issuecomment-276698431
wrapped_output_3 = """
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
ceph.x86_64 1:11.2.0-0.el7 ceph
ceph-base.x86_64 1:11.2.0-0.el7 ceph
ceph-common.x86_64 1:11.2.0-0.el7 ceph
ceph-mds.x86_64 1:11.2.0-0.el7 ceph
ceph-mon.x86_64 1:11.2.0-0.el7 ceph
ceph-osd.x86_64 1:11.2.0-0.el7 ceph
ceph-selinux.x86_64 1:11.2.0-0.el7 ceph
libcephfs1.x86_64 1:11.0.2-0.el7 ceph
librados2.x86_64 1:11.2.0-0.el7 ceph
libradosstriper1.x86_64 1:11.2.0-0.el7 ceph
librbd1.x86_64 1:11.2.0-0.el7 ceph
librgw2.x86_64 1:11.2.0-0.el7 ceph
python-cephfs.x86_64 1:11.2.0-0.el7 ceph
python-rados.x86_64 1:11.2.0-0.el7 ceph
python-rbd.x86_64 1:11.2.0-0.el7 ceph
"""
# from https://github.com/ansible/ansible-modules-core/issues/4318#issuecomment-251416661
wrapped_output_4 = """
ipxe-roms-qemu.noarch 20160127-1.git6366fa7a.el7
rhelosp-9.0-director-puddle
quota.x86_64 1:4.01-11.el7_2.1 rhelosp-rhel-7.2-z
quota-nls.noarch 1:4.01-11.el7_2.1 rhelosp-rhel-7.2-z
rdma.noarch 7.2_4.1_rc6-2.el7 rhelosp-rhel-7.2-z
screen.x86_64 4.1.0-0.23.20120314git3c2946.el7_2
rhelosp-rhel-7.2-z
sos.noarch 3.2-36.el7ost.2 rhelosp-9.0-puddle
sssd-client.x86_64 1.13.0-40.el7_2.12 rhelosp-rhel-7.2-z
"""
# A 'normal-ish' yum check-update output, without any wrapped lines
unwrapped_output_rhel7 = """
Loaded plugins: etckeeper, product-id, search-disabled-repos, subscription-
: manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
NetworkManager-openvpn.x86_64 1:1.2.6-1.el7 epel
NetworkManager-openvpn-gnome.x86_64 1:1.2.6-1.el7 epel
cabal-install.x86_64 1.16.1.0-2.el7 epel
cgit.x86_64 1.1-1.el7 epel
python34-libs.x86_64 3.4.5-3.el7 epel
python34-test.x86_64 3.4.5-3.el7 epel
python34-tkinter.x86_64 3.4.5-3.el7 epel
python34-tools.x86_64 3.4.5-3.el7 epel
qgit.x86_64 2.6-4.el7 epel
rdiff-backup.x86_64 1.2.8-12.el7 epel
stoken-libs.x86_64 0.91-1.el7 epel
xlockmore.x86_64 5.49-2.el7 epel
"""
# Some wrapped obsoletes for prepending to output for testing both
wrapped_output_rhel7_obsoletes_postfix = """
Obsoleting Packages
ddashboard.x86_64 0.2.0.1-1.el7_3 mhlavink-developerdashboard
developerdashboard.x86_64 0.1.12.2-1.el7_2 @mhlavink-developerdashboard
python-bugzilla.noarch 1.2.2-3.el7_2.1 mhlavink-developerdashboard
python-bugzilla-develdashboardfixes.noarch
1.2.2-3.el7 @mhlavink-developerdashboard
python2-futures.noarch 3.0.5-1.el7 epel
python-futures.noarch 3.0.3-1.el7 @epel
python2-pip.noarch 8.1.2-5.el7 epel
python-pip.noarch 7.1.0-1.el7 @epel
python2-pyxdg.noarch 0.25-6.el7 epel
pyxdg.noarch 0.25-5.el7 @epel
python2-simplejson.x86_64 3.10.0-1.el7 epel
python-simplejson.x86_64 3.3.3-1.el7 @epel
Security: kernel-3.10.0-327.28.2.el7.x86_64 is an installed security update
Security: kernel-3.10.0-327.22.2.el7.x86_64 is the currently running version
"""
unwrapped_output_rhel7_obsoletes = unwrapped_output_rhel7 + wrapped_output_rhel7_obsoletes_postfix
unwrapped_output_rhel7_expected_pkgs = ["NetworkManager-openvpn", "NetworkManager-openvpn-gnome", "cabal-install",
"cgit", "python34-libs", "python34-test", "python34-tkinter",
"python34-tools", "qgit", "rdiff-backup", "stoken-libs", "xlockmore"]
class TestYumUpdateCheckParse(unittest.TestCase):
def _assert_expected(self, expected_pkgs, result):
for expected_pkg in expected_pkgs:
self.assertIn(expected_pkg, result)
self.assertEqual(len(result), len(expected_pkgs))
self.assertIsInstance(result, dict)
def test_empty_output(self):
res = yum.parse_check_update("")
expected_pkgs = []
self._assert_expected(expected_pkgs, res)
def test_plugin_load_error(self):
res = yum.parse_check_update(yum_plugin_load_error)
expected_pkgs = []
self._assert_expected(expected_pkgs, res)
def test_wrapped_output_1(self):
res = yum.parse_check_update(wrapped_output_1)
expected_pkgs = ["vms-agent"]
self._assert_expected(expected_pkgs, res)
def test_wrapped_output_2(self):
res = yum.parse_check_update(wrapped_output_2)
expected_pkgs = ["empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty-empty",
"libtiff"]
self._assert_expected(expected_pkgs, res)
def test_wrapped_output_3(self):
res = yum.parse_check_update(wrapped_output_3)
expected_pkgs = ["ceph", "ceph-base", "ceph-common", "ceph-mds",
"ceph-mon", "ceph-osd", "ceph-selinux", "libcephfs1",
"librados2", "libradosstriper1", "librbd1", "librgw2",
"python-cephfs", "python-rados", "python-rbd"]
self._assert_expected(expected_pkgs, res)
def test_wrapped_output_4(self):
res = yum.parse_check_update(wrapped_output_4)
expected_pkgs = ["ipxe-roms-qemu", "quota", "quota-nls", "rdma", "screen",
"sos", "sssd-client"]
self._assert_expected(expected_pkgs, res)
def test_wrapped_output_rhel7(self):
res = yum.parse_check_update(unwrapped_output_rhel7)
self._assert_expected(unwrapped_output_rhel7_expected_pkgs, res)
def test_wrapped_output_rhel7_obsoletes(self):
res = yum.parse_check_update(unwrapped_output_rhel7_obsoletes)
self._assert_expected(unwrapped_output_rhel7_expected_pkgs, res)