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salt/0024-proper-checking-if-zypper-exit-codes-and-handling-of.patch

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From 0372b1ff62a79d0c9f384fe48969d8bae039d5a1 Mon Sep 17 00:00:00 2001
From: Michael Calmer <mc@suse.de>
Date: Thu, 25 Feb 2016 10:20:29 +0100
Subject: [PATCH 24/25] proper checking if zypper exit codes and handling of
result messages
add function to check zypper exit codes
check zypper exit code everywhere
add _zypper_check_result() to raise and error or return stdout
use _zypper_check_result()
remove new lines between zypper command and check result
restructure the code a bit
---
salt/modules/zypper.py | 144 +++++++++++++++++++++++++++++--------------------
1 file changed, 85 insertions(+), 59 deletions(-)
diff --git a/salt/modules/zypper.py b/salt/modules/zypper.py
index ab8bb06..d6628aa 100644
--- a/salt/modules/zypper.py
+++ b/salt/modules/zypper.py
@@ -26,6 +26,7 @@ except ImportError:
# pylint: enable=import-error,redefined-builtin,no-name-in-module
from xml.dom import minidom as dom
+from xml.parsers.expat import ExpatError
# Import salt libs
import salt.utils
@@ -70,6 +71,53 @@ def _zypper(*opts):
return cmd
+def _is_zypper_error(retcode):
+ '''
+ Return True in case the exist code indicate a zypper errror.
+ Otherwise False
+ '''
+ # see man zypper for existing exit codes
+ return not int(retcode) in [0, 100, 101, 102, 103]
+
+
+def _zypper_check_result(result, xml=False):
+ '''
+ Check the result of a zypper command. In case of an error, it raise
+ a CommandExecutionError. Otherwise it returns stdout string of the
+ command.
+
+ result
+ The result of a zypper command called with cmd.run_all
+
+ xml
+ Set to True if zypper command was called with --xmlout.
+ In this case it try to read an error message out of the XML
+ stream. Default is False.
+ '''
+ if _is_zypper_error(result['retcode']):
+ msg = list()
+ if not xml:
+ msg.append(result['stderr'] and result['stderr'] or "")
+ else:
+ try:
+ doc = dom.parseString(result['stdout'])
+ except ExpatError as err:
+ log.error(err)
+ doc = None
+ if doc:
+ msg_nodes = doc.getElementsByTagName('message')
+ for node in msg_nodes:
+ if node.getAttribute('type') == 'error':
+ msg.append(node.childNodes[0].nodeValue)
+ elif result['stderr'].strip():
+ msg.append(result['stderr'].strip())
+
+ raise CommandExecutionError("zypper command failed: {0}".format(
+ msg and os.linesep.join(msg) or "Check zypper logs"))
+
+ return result['stdout']
+
+
def list_upgrades(refresh=True):
'''
List all available package upgrades on this system
@@ -89,15 +137,7 @@ def list_upgrades(refresh=True):
refresh_db()
ret = dict()
run_data = __salt__['cmd.run_all'](_zypper('-x', 'list-updates'), output_loglevel='trace')
- if run_data['retcode'] != 0:
- msg = list()
- for chnl in ['stderr', 'stdout']:
- if run_data.get(chnl, ''):
- msg.append(run_data[chnl])
- raise CommandExecutionError(os.linesep.join(msg) or
- 'Zypper returned non-zero system exit. See Zypper logs for more details.')
-
- doc = dom.parseString(run_data['stdout'])
+ doc = dom.parseString(_zypper_check_result(run_data, xml=True))
for update_node in doc.getElementsByTagName('update'):
if update_node.getAttribute('kind') == 'package':
ret[update_node.getAttribute('name')] = update_node.getAttribute('edition')
@@ -506,7 +546,8 @@ def del_repo(repo):
for alias in repos_cfg.sections():
if alias == repo:
cmd = _zypper('-x', 'rr', '--loose-auth', '--loose-query', alias)
- doc = dom.parseString(__salt__['cmd.run'](cmd, output_loglevel='trace'))
+ ret = __salt__['cmd.run_all'](cmd, output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(ret, xml=True))
msg = doc.getElementsByTagName('message')
if doc.getElementsByTagName('progress') and msg:
return {
@@ -590,22 +631,8 @@ def mod_repo(repo, **kwargs):
'Repository \'{0}\' already exists as \'{1}\'.'.format(repo, alias))
# Add new repo
- doc = None
- try:
- # Try to parse the output and find the error,
- # but this not always working (depends on Zypper version)
- doc = dom.parseString(__salt__['cmd.run'](
- _zypper('-x', 'ar', url, repo), output_loglevel='trace'))
- except Exception:
- # No XML out available, but it is still unknown the state of the result.
- pass
-
- if doc:
- msg_nodes = doc.getElementsByTagName('message')
- if msg_nodes:
- msg_node = msg_nodes[0]
- if msg_node.getAttribute('type') == 'error':
- raise CommandExecutionError(msg_node.childNodes[0].nodeValue)
+ _zypper_check_result(__salt__['cmd.run_all'](_zypper('-x', 'ar', url, repo),
+ output_loglevel='trace'), xml=True)
# Verify the repository has been added
repos_cfg = _get_configured_repos()
@@ -641,8 +668,9 @@ def mod_repo(repo, **kwargs):
if cmd_opt:
cmd_opt.append(repo)
- __salt__['cmd.run'](_zypper('-x', 'mr', *cmd_opt),
- output_loglevel='trace')
+ ret = __salt__['cmd.run_all'](_zypper('-x', 'mr', *cmd_opt),
+ output_loglevel='trace')
+ _zypper_check_result(ret, xml=True)
# If repo nor added neither modified, error should be thrown
if not added and not cmd_opt:
@@ -666,17 +694,7 @@ def refresh_db():
'''
cmd = _zypper('refresh', '--force')
ret = {}
- call = __salt__['cmd.run_all'](cmd, output_loglevel='trace')
- if call['retcode'] != 0:
- comment = ''
- if 'stderr' in call:
- comment += call['stderr']
-
- raise CommandExecutionError(
- '{0}'.format(comment)
- )
- else:
- out = call['stdout']
+ out = _zypper_check_result(__salt__['cmd.run_all'](cmd, output_loglevel='trace'))
for line in out.splitlines():
if not line:
@@ -828,19 +846,18 @@ def install(name=None,
cmd = cmd_install + targets[:500]
targets = targets[500:]
call = __salt__['cmd.run_all'](cmd, output_loglevel='trace', python_shell=False)
- if call['retcode'] != 0:
- raise CommandExecutionError(call['stderr']) # Fixme: This needs a proper report mechanism.
- else:
- for line in call['stdout'].splitlines():
- match = re.match(r"^The selected package '([^']+)'.+has lower version", line)
- if match:
- downgrades.append(match.group(1))
+ out = _zypper_check_result(call)
+ for line in out.splitlines():
+ match = re.match(r"^The selected package '([^']+)'.+has lower version", line)
+ if match:
+ downgrades.append(match.group(1))
while downgrades:
cmd = cmd_install + ['--force'] + downgrades[:500]
downgrades = downgrades[500:]
- __salt__['cmd.run'](cmd, output_loglevel='trace', python_shell=False)
+ _zypper_check_result(__salt__['cmd.run_all'](cmd, output_loglevel='trace', python_shell=False))
+
__context__.pop('pkg.list_pkgs', None)
new = list_pkgs()
@@ -877,7 +894,7 @@ def upgrade(refresh=True):
old = list_pkgs()
cmd = _zypper('update', '--auto-agree-with-licenses')
call = __salt__['cmd.run_all'](cmd, output_loglevel='trace')
- if call['retcode'] != 0:
+ if _is_zypper_error(call['retcode']):
ret['result'] = False
if 'stderr' in call:
ret['comment'] += call['stderr']
@@ -906,7 +923,8 @@ def _uninstall(name=None, pkgs=None):
return {}
while targets:
- __salt__['cmd.run'](_zypper('remove', *targets[:500]), output_loglevel='trace')
+ _zypper_check_result(__salt__['cmd.run_all'](_zypper('remove', *targets[:500]),
+ output_loglevel='trace'))
targets = targets[500:]
__context__.pop('pkg.list_pkgs', None)
@@ -1019,7 +1037,8 @@ def clean_locks():
if not os.path.exists("/etc/zypp/locks"):
return out
- doc = dom.parseString(__salt__['cmd.run'](_zypper('-x', 'cl'), output_loglevel='trace'))
+ ret = __salt__['cmd.run_all'](_zypper('-x', 'cl'), output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(ret, xml=True))
for node in doc.getElementsByTagName("message"):
text = node.childNodes[0].nodeValue.lower()
if text.startswith(LCK):
@@ -1057,7 +1076,8 @@ def remove_lock(packages, **kwargs): # pylint: disable=unused-argument
missing.append(pkg)
if removed:
- __salt__['cmd.run'](_zypper('rl', *removed), output_loglevel='trace')
+ _zypper_check_result(__salt__['cmd.run_all'](_zypper('rl', *removed),
+ output_loglevel='trace'))
return {'removed': len(removed), 'not_found': missing}
@@ -1086,7 +1106,8 @@ def add_lock(packages, **kwargs): # pylint: disable=unused-argument
added.append(pkg)
if added:
- __salt__['cmd.run'](_zypper('al', *added), output_loglevel='trace')
+ _zypper_check_result(__salt__['cmd.run_all'](_zypper('al', *added),
+ output_loglevel='trace'))
return {'added': len(added), 'packages': added}
@@ -1218,8 +1239,10 @@ def _get_patterns(installed_only=None):
List all known patterns in repos.
'''
patterns = {}
- doc = dom.parseString(__salt__['cmd.run'](_zypper('--xmlout', 'se', '-t', 'pattern'),
- output_loglevel='trace'))
+
+ ret = __salt__['cmd.run_all'](_zypper('--xmlout', 'se', '-t', 'pattern'),
+ output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(ret, xml=True))
for element in doc.getElementsByTagName('solvable'):
installed = element.getAttribute('status') == 'installed'
if (installed_only and installed) or not installed_only:
@@ -1283,8 +1306,9 @@ def search(criteria, refresh=False):
if refresh:
refresh_db()
- doc = dom.parseString(__salt__['cmd.run'](_zypper('--xmlout', 'se', criteria),
- output_loglevel='trace'))
+ ret = __salt__['cmd.run_all'](_zypper('--xmlout', 'se', criteria),
+ output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(ret, xml=True))
solvables = doc.getElementsByTagName('solvable')
if not solvables:
raise CommandExecutionError('No packages found by criteria "{0}".'.format(criteria))
@@ -1343,7 +1367,9 @@ def list_products(all=False, refresh=False):
cmd = _zypper('-x', 'products')
if not all:
cmd.append('-i')
- doc = dom.parseString(__salt__['cmd.run'](cmd, output_loglevel='trace'))
+
+ call = __salt__['cmd.run_all'](cmd, output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(call, xml=True))
for prd in doc.getElementsByTagName('product-list')[0].getElementsByTagName('product'):
p_nfo = dict()
for k_p_nfo, v_p_nfo in prd.attributes.items():
@@ -1390,8 +1416,8 @@ def download(*packages, **kwargs):
if refresh:
refresh_db()
- doc = dom.parseString(__salt__['cmd.run'](
- _zypper('-x', 'download', *packages), output_loglevel='trace'))
+ ret = __salt__['cmd.run_all'](_zypper('-x', 'download', *packages), output_loglevel='trace')
+ doc = dom.parseString(_zypper_check_result(ret, xml=True))
pkg_ret = {}
for dld_result in doc.getElementsByTagName("download-result"):
repo = dld_result.getElementsByTagName("repository")[0]
--
2.1.4
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