From 66301c0a4a316ebb9c0f41ffcca3ec164bb2911f Mon Sep 17 00:00:00 2001
From: Viktor Ashirov <vashirov@redhat.com>
Date: Feb 10 2020 10:46:04 +0000
Subject: Issue 49624 -  DB Deadlock on modrdn appears to corrupt database and entry cache


Description:
Add CI test

Relates: https://pagure.io/389-ds-base/issue/49624

---

diff --git a/dirsrvtests/tests/suites/db_deadlocks/entrycache_test.py b/dirsrvtests/tests/suites/db_deadlocks/entrycache_test.py
new file mode 100644
index 0000000..f046de4
--- /dev/null
+++ b/dirsrvtests/tests/suites/db_deadlocks/entrycache_test.py
@@ -0,0 +1,90 @@
+# --- BEGIN COPYRIGHT BLOCK ---
+# Copyright (C) 2020 Red Hat, Inc.
+# All rights reserved.
+#
+# License: GPL (version 3 or any later version).
+# See LICENSE for details.
+# --- END COPYRIGHT BLOCK ---
+#
+import os
+import ldap
+import pytest
+import subprocess
+from lib389.tasks import *
+from lib389.utils import *
+from lib389.topologies import topology_st
+from lib389.idm.user import UserAccounts
+from lib389._constants import DEFAULT_SUFFIX
+
+pytestmark = pytest.mark.tier1
+
+logging.getLogger(__name__).setLevel(logging.DEBUG)
+log = logging.getLogger(__name__)
+
+txn_testing_config = """[Service]
+Environment=TXN_TESTING=1
+Environment=TXN_TEST_VERBOSE=1
+Environment=TXN_TEST_HOLD_MSEC=200
+"""
+
+@pytest.fixture(scope='function')
+def set_systemd_unit_env(request, topology_st):
+    systemd_dir_path=f'/etc/systemd/system/dirsrv@{topology_st.standalone.serverid}.service.d'
+    if not os.path.exists(systemd_dir_path):
+        os.mkdir(systemd_dir_path)
+    with open(f'{systemd_dir_path}/override.conf', 'w') as f:
+        f.write(txn_testing_config)
+    subprocess.run(["systemctl", "daemon-reload"])
+    topology_st.standalone.restart()
+
+    def fin():
+        if os.path.exists(systemd_dir_path):
+            os.remove(f'{systemd_dir_path}/override.conf')
+            os.rmdir(systemd_dir_path)
+
+    request.addfinalizer(fin)
+
+
+@pytest.mark.ds49624
+@pytest.mark.bz1744623
+def test_db_deadlock_on_modrdn(topology_st, set_systemd_unit_env):
+    """Test that DB deadlock on MODRDN doesn't cause entry cache corruption
+
+    :id: 631b2be9-5c03-44c7-9853-a87c923d5b30
+
+    :setup: Standalone instance
+
+    :steps: 1. Set TXN_TESTING env variable for the current DS instance
+            2. Restart the instance
+            3. Do MODRDN on the same entry back and forth multiple times
+
+    :expectedresults:
+            1. Pass
+            2. Instance should be up and running
+            3. Operations should be successful
+    """
+
+    topo = topology_st.standalone
+    topo.config.set('nsslapd-auditlog-logging-enabled','on')
+    topo.config.set('nsslapd-auditfaillog-logging-enabled','on')
+    TEST_ENTRY_NAME = 'tuser'
+    users = UserAccounts(topo, DEFAULT_SUFFIX)
+    user_properties = {
+        'uid': TEST_ENTRY_NAME,
+        'cn': TEST_ENTRY_NAME,
+        'sn': TEST_ENTRY_NAME,
+        'uidNumber': '1001',
+        'gidNumber': '2001',
+        'homeDirectory': '/home/{}'.format(TEST_ENTRY_NAME)
+    }
+
+    tuser = users.create(properties=user_properties)
+    for i in range(100):
+        try:
+            tuser.rename('uid=tuser', newsuperior=DEFAULT_SUFFIX, deloldrdn=False)
+        except:
+            pass
+        try:
+            tuser.rename('uid=tuser', newsuperior=f'ou=People,{DEFAULT_SUFFIX}', deloldrdn=False)
+        except:
+            pass