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salt/retry-if-rpm-lock-is-temporarily-unavailable-547.patch

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From cedde1082b3a11b941327ba8e213f44637fb8a6b Mon Sep 17 00:00:00 2001
From: Witek Bedyk <witold.bedyk@suse.com>
Date: Mon, 29 Aug 2022 14:16:00 +0200
Subject: [PATCH] Retry if RPM lock is temporarily unavailable (#547)
* Retry if RPM lock is temporarily unavailable
Backported from saltstack/salt#62204
Signed-off-by: Witek Bedyk <witold.bedyk@suse.com>
* Sync formating fixes from upstream
Signed-off-by: Witek Bedyk <witold.bedyk@suse.com>
---
changelog/62204.fixed | 1 +
salt/modules/zypperpkg.py | 117 +++++++++++++++++----------
tests/unit/modules/test_zypperpkg.py | 45 ++++++++++-
3 files changed, 115 insertions(+), 48 deletions(-)
create mode 100644 changelog/62204.fixed
diff --git a/changelog/62204.fixed b/changelog/62204.fixed
new file mode 100644
index 0000000000..59f1914593
--- /dev/null
+++ b/changelog/62204.fixed
@@ -0,0 +1 @@
+Fixed Zypper module failing on RPM lock file being temporarily unavailable.
diff --git a/salt/modules/zypperpkg.py b/salt/modules/zypperpkg.py
index b622105e15..7a249486fb 100644
--- a/salt/modules/zypperpkg.py
+++ b/salt/modules/zypperpkg.py
@@ -14,6 +14,7 @@ Package support for openSUSE via the zypper package manager
import configparser
import datetime
+import errno
import fnmatch
import logging
import os
@@ -39,6 +40,9 @@ from salt.exceptions import CommandExecutionError, MinionError, SaltInvocationEr
# pylint: disable=import-error,redefined-builtin,no-name-in-module
from salt.utils.versions import LooseVersion
+if salt.utils.files.is_fcntl_available():
+ import fcntl
+
log = logging.getLogger(__name__)
HAS_ZYPP = False
@@ -106,6 +110,7 @@ class _Zypper:
XML_DIRECTIVES = ["-x", "--xmlout"]
# ZYPPER_LOCK is not affected by --root
ZYPPER_LOCK = "/var/run/zypp.pid"
+ RPM_LOCK = "/var/lib/rpm/.rpm.lock"
TAG_RELEASED = "zypper/released"
TAG_BLOCKED = "zypper/blocked"
@@ -276,7 +281,7 @@ class _Zypper:
and self.exit_code not in self.WARNING_EXIT_CODES
)
- def _is_lock(self):
+ def _is_zypper_lock(self):
"""
Is this is a lock error code?
@@ -284,6 +289,23 @@ class _Zypper:
"""
return self.exit_code == self.LOCK_EXIT_CODE
+ def _is_rpm_lock(self):
+ """
+ Is this an RPM lock error?
+ """
+ if salt.utils.files.is_fcntl_available():
+ if self.exit_code > 0 and os.path.exists(self.RPM_LOCK):
+ with salt.utils.files.fopen(self.RPM_LOCK, mode="w+") as rfh:
+ try:
+ fcntl.lockf(rfh, fcntl.LOCK_EX | fcntl.LOCK_NB)
+ except OSError as err:
+ if err.errno == errno.EAGAIN:
+ return True
+ else:
+ fcntl.lockf(rfh, fcntl.LOCK_UN)
+
+ return False
+
def _is_xml_mode(self):
"""
Is Zypper's output is in XML format?
@@ -306,7 +328,7 @@ class _Zypper:
raise CommandExecutionError("No output result from Zypper?")
self.exit_code = self.__call_result["retcode"]
- if self._is_lock():
+ if self._is_zypper_lock() or self._is_rpm_lock():
return False
if self._is_error():
@@ -387,48 +409,11 @@ class _Zypper:
if self._check_result():
break
- if os.path.exists(self.ZYPPER_LOCK):
- try:
- with salt.utils.files.fopen(self.ZYPPER_LOCK) as rfh:
- data = __salt__["ps.proc_info"](
- int(rfh.readline()),
- attrs=["pid", "name", "cmdline", "create_time"],
- )
- data["cmdline"] = " ".join(data["cmdline"])
- data["info"] = "Blocking process created at {}.".format(
- datetime.datetime.utcfromtimestamp(
- data["create_time"]
- ).isoformat()
- )
- data["success"] = True
- except Exception as err: # pylint: disable=broad-except
- data = {
- "info": (
- "Unable to retrieve information about blocking process: {}".format(
- err.message
- )
- ),
- "success": False,
- }
- else:
- data = {
- "info": "Zypper is locked, but no Zypper lock has been found.",
- "success": False,
- }
-
- if not data["success"]:
- log.debug("Unable to collect data about blocking process.")
- else:
- log.debug("Collected data about blocking process.")
-
- __salt__["event.fire_master"](data, self.TAG_BLOCKED)
- log.debug(
- "Fired a Zypper blocked event to the master with the data: %s", data
- )
- log.debug("Waiting 5 seconds for Zypper gets released...")
- time.sleep(5)
- if not was_blocked:
- was_blocked = True
+ if self._is_zypper_lock():
+ self._handle_zypper_lock_file()
+ if self._is_rpm_lock():
+ self._handle_rpm_lock_file()
+ was_blocked = True
if was_blocked:
__salt__["event.fire_master"](
@@ -451,6 +436,50 @@ class _Zypper:
or self.__call_result["stdout"]
)
+ def _handle_zypper_lock_file(self):
+ if os.path.exists(self.ZYPPER_LOCK):
+ try:
+ with salt.utils.files.fopen(self.ZYPPER_LOCK) as rfh:
+ data = __salt__["ps.proc_info"](
+ int(rfh.readline()),
+ attrs=["pid", "name", "cmdline", "create_time"],
+ )
+ data["cmdline"] = " ".join(data["cmdline"])
+ data["info"] = "Blocking process created at {}.".format(
+ datetime.datetime.utcfromtimestamp(
+ data["create_time"]
+ ).isoformat()
+ )
+ data["success"] = True
+ except Exception as err: # pylint: disable=broad-except
+ data = {
+ "info": (
+ "Unable to retrieve information about "
+ "blocking process: {}".format(err)
+ ),
+ "success": False,
+ }
+ else:
+ data = {
+ "info": "Zypper is locked, but no Zypper lock has been found.",
+ "success": False,
+ }
+ if not data["success"]:
+ log.debug("Unable to collect data about blocking process.")
+ else:
+ log.debug("Collected data about blocking process.")
+ __salt__["event.fire_master"](data, self.TAG_BLOCKED)
+ log.debug("Fired a Zypper blocked event to the master with the data: %s", data)
+ log.debug("Waiting 5 seconds for Zypper gets released...")
+ time.sleep(5)
+
+ def _handle_rpm_lock_file(self):
+ data = {"info": "RPM is temporarily locked.", "success": True}
+ __salt__["event.fire_master"](data, self.TAG_BLOCKED)
+ log.debug("Fired an RPM blocked event to the master with the data: %s", data)
+ log.debug("Waiting 5 seconds for RPM to get released...")
+ time.sleep(5)
+
__zypper__ = _Zypper()
diff --git a/tests/unit/modules/test_zypperpkg.py b/tests/unit/modules/test_zypperpkg.py
index 3f1560a385..37d555844c 100644
--- a/tests/unit/modules/test_zypperpkg.py
+++ b/tests/unit/modules/test_zypperpkg.py
@@ -4,6 +4,7 @@
import configparser
+import errno
import io
import os
from xml.dom import minidom
@@ -97,7 +98,7 @@ class ZypperTestCase(TestCase, LoaderModuleMockMixin):
}
with patch.dict(
zypper.__salt__, {"cmd.run_all": MagicMock(return_value=ref_out)}
- ):
+ ), patch.object(zypper.__zypper__, "_is_rpm_lock", return_value=False):
upgrades = zypper.list_upgrades(refresh=False)
self.assertEqual(len(upgrades), 3)
for pkg, version in {
@@ -198,7 +199,9 @@ class ZypperTestCase(TestCase, LoaderModuleMockMixin):
' type="error">Booya!</message></stream>'
)
sniffer = RunSniffer(stdout=stdout_xml_snippet, retcode=1)
- with patch.dict("salt.modules.zypperpkg.__salt__", {"cmd.run_all": sniffer}):
+ with patch.dict(
+ "salt.modules.zypperpkg.__salt__", {"cmd.run_all": sniffer}
+ ), patch.object(zypper.__zypper__, "_is_rpm_lock", return_value=False):
with self.assertRaisesRegex(
CommandExecutionError, "^Zypper command failure: Booya!$"
):
@@ -232,7 +235,7 @@ class ZypperTestCase(TestCase, LoaderModuleMockMixin):
with patch.dict(
"salt.modules.zypperpkg.__salt__",
{"cmd.run_all": MagicMock(return_value=ref_out)},
- ):
+ ), patch.object(zypper.__zypper__, "_is_rpm_lock", return_value=False):
with self.assertRaisesRegex(
CommandExecutionError,
"^Zypper command failure: Some handled zypper internal error{}Another"
@@ -245,7 +248,7 @@ class ZypperTestCase(TestCase, LoaderModuleMockMixin):
with patch.dict(
"salt.modules.zypperpkg.__salt__",
{"cmd.run_all": MagicMock(return_value=ref_out)},
- ):
+ ), patch.object(zypper.__zypper__, "_is_rpm_lock", return_value=False):
with self.assertRaisesRegex(
CommandExecutionError, "^Zypper command failure: Check Zypper's logs.$"
):
@@ -2064,3 +2067,37 @@ pattern() = package-c"""
python_shell=False,
env={"ZYPP_READONLY_HACK": "1"},
)
+
+ def test_is_rpm_lock_no_error(self):
+ with patch.object(os.path, "exists", return_value=True):
+ self.assertFalse(zypper.__zypper__._is_rpm_lock())
+
+ def test_rpm_lock_does_not_exist(self):
+ if salt.utils.files.is_fcntl_available():
+ zypper.__zypper__.exit_code = 1
+ with patch.object(
+ os.path, "exists", return_value=False
+ ) as mock_path_exists:
+ self.assertFalse(zypper.__zypper__._is_rpm_lock())
+ mock_path_exists.assert_called_with(zypper.__zypper__.RPM_LOCK)
+ zypper.__zypper__._reset()
+
+ def test_rpm_lock_acquirable(self):
+ if salt.utils.files.is_fcntl_available():
+ zypper.__zypper__.exit_code = 1
+ with patch.object(os.path, "exists", return_value=True), patch(
+ "fcntl.lockf", side_effect=OSError(errno.EAGAIN, "")
+ ) as lockf_mock, patch("salt.utils.files.fopen", mock_open()):
+ self.assertTrue(zypper.__zypper__._is_rpm_lock())
+ lockf_mock.assert_called()
+ zypper.__zypper__._reset()
+
+ def test_rpm_lock_not_acquirable(self):
+ if salt.utils.files.is_fcntl_available():
+ zypper.__zypper__.exit_code = 1
+ with patch.object(os.path, "exists", return_value=True), patch(
+ "fcntl.lockf"
+ ) as lockf_mock, patch("salt.utils.files.fopen", mock_open()):
+ self.assertFalse(zypper.__zypper__._is_rpm_lock())
+ self.assertEqual(lockf_mock.call_count, 2)
+ zypper.__zypper__._reset()
--
2.37.2
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