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#------------------------------------------------------------------------------
# Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
#------------------------------------------------------------------------------
"""
2400 - Module for testing session pools
"""
import threading
import cx_Oracle as oracledb
import test_env
class TestCase(test_env.BaseTestCase):
require_connection = False
def __connect_and_drop(self):
with self.pool.acquire() as connection:
cursor = connection.cursor()
cursor.execute("select count(*) from TestNumbers")
count, = cursor.fetchone()
self.assertEqual(count, 10)
def __connect_and_generate_error(self):
with self.pool.acquire() as connection:
cursor = connection.cursor()
self.assertRaises(oracledb.DatabaseError, cursor.execute,
"select 1 / 0 from dual")
def __callable_session_callback(self, conn, requested_tag):
self.session_called = True
supported_formats = {
"SIMPLE" : "'YYYY-MM-DD HH24:MI'",
"FULL" : "'YYYY-MM-DD HH24:MI:SS'"
}
supported_time_zones = {
"UTC" : "'UTC'",
"MST" : "'-07:00'"
}
supported_keys = {
"NLS_DATE_FORMAT" : supported_formats,
"TIME_ZONE" : supported_time_zones
}
if requested_tag is not None:
state_parts = []
for directive in requested_tag.split(";"):
parts = directive.split("=")
if len(parts) != 2:
raise ValueError("Tag must contain key=value pairs")
key, value = parts
value_dict = supported_keys.get(key)
if value_dict is None:
raise ValueError("Tag only supports keys: %s" % \
(", ".join(supported_keys)))
actual_value = value_dict.get(value)
if actual_value is None:
raise ValueError("Key %s only supports values: %s" % \
(key, ", ".join(value_dict)))
state_parts.append("%s = %s" % (key, actual_value))
sql = "alter session set %s" % " ".join(state_parts)
cursor = conn.cursor()
cursor.execute(sql)
conn.tag = requested_tag
def __perform_reconfigure_test(self, parameter_name, parameter_value,
min=3, max=30, increment=4, timeout=5,
wait_timeout=5000, stmtcachesize=25,
max_lifetime_session=1000,
max_sessions_per_shard=3, ping_interval=30,
getmode=oracledb.SPOOL_ATTRVAL_WAIT):
creation_args = dict(min=min, max=max, increment=increment,
timeout=timeout, wait_timeout=wait_timeout,
stmtcachesize=stmtcachesize,
max_lifetime_session=max_lifetime_session,
max_sessions_per_shard=max_sessions_per_shard,
ping_interval=ping_interval, getmode=getmode)
reconfigure_args = {}
reconfigure_args[parameter_name] = parameter_value
pool = test_env.get_pool(**creation_args)
connection = pool.acquire()
pool.reconfigure(**reconfigure_args)
actual_args = dict(min=pool.min, max=pool.max,
increment=pool.increment, timeout=pool.timeout,
wait_timeout=pool.wait_timeout,
stmtcachesize=pool.stmtcachesize,
max_lifetime_session=pool.max_lifetime_session,
max_sessions_per_shard=pool.max_sessions_per_shard,
ping_interval=pool.ping_interval,
getmode=pool.getmode)
expected_args = creation_args.copy()
expected_args.update(reconfigure_args)
self.assertEqual(actual_args, expected_args)
def __verify_connection(self, connection, expected_user,
expected_proxy_user=None):
cursor = connection.cursor()
cursor.execute("""
select
sys_context('userenv', 'session_user'),
sys_context('userenv', 'proxy_user')
from dual""")
actual_user, actual_proxy_user = cursor.fetchone()
self.assertEqual(actual_user, expected_user.upper())
self.assertEqual(actual_proxy_user,
expected_proxy_user and expected_proxy_user.upper())
def test_2400_pool(self):
"2400 - test that the pool is created and has the right attributes"
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
self.assertEqual(pool.username, test_env.get_main_user(),
"user name differs")
self.assertEqual(pool.tnsentry, test_env.get_connect_string(),
"tnsentry differs")
self.assertEqual(pool.dsn, test_env.get_connect_string(),
"dsn differs")
self.assertEqual(pool.max, 8, "max differs")
self.assertEqual(pool.min, 2, "min differs")
self.assertEqual(pool.increment, 3, "increment differs")
self.assertEqual(pool.busy, 0, "busy not 0 at start")
connection_1 = pool.acquire()
self.assertEqual(pool.busy, 1, "busy not 1 after acquire")
connection_2 = pool.acquire()
self.assertEqual(pool.busy, 2, "busy not 2 after acquire")
self.assertEqual(pool.opened, 2, "opened differs")
connection_3 = pool.acquire()
self.assertEqual(pool.busy, 3, "busy not 3 after acquire")
pool.release(connection_3)
self.assertEqual(pool.busy, 2, "busy not 2 after release")
pool.release(connection_1)
pool.release(connection_2)
self.assertEqual(pool.busy, 0, "busy not 0 after release")
pool.getmode = oracledb.SPOOL_ATTRVAL_NOWAIT
self.assertEqual(pool.getmode, oracledb.SPOOL_ATTRVAL_NOWAIT)
if test_env.get_client_version() >= (12, 2):
pool.getmode = oracledb.SPOOL_ATTRVAL_TIMEDWAIT
self.assertEqual(pool.getmode, oracledb.SPOOL_ATTRVAL_TIMEDWAIT)
pool.stmtcachesize = 50
self.assertEqual(pool.stmtcachesize, 50)
pool.timeout = 10
self.assertEqual(pool.timeout, 10)
if test_env.get_client_version() >= (12, 1):
pool.max_lifetime_session = 10
self.assertEqual(pool.max_lifetime_session, 10)
def test_2401_proxy_auth(self):
"2401 - test that proxy authentication is possible"
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
self.assertEqual(pool.homogeneous, True,
"homogeneous should be True by default")
self.assertRaises(oracledb.DatabaseError, pool.acquire,
user="missing_proxyuser")
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_WAIT,
homogeneous=False)
msg = "homogeneous should be False after setting it in the constructor"
self.assertEqual(pool.homogeneous, False, msg)
connection = pool.acquire(user=test_env.get_proxy_user())
cursor = connection.cursor()
cursor.execute('select user from dual')
result, = cursor.fetchone()
self.assertEqual(result, test_env.get_proxy_user().upper())
connection.close()
def test_2403_rollback_on_release(self):
"2403 - connection rolls back before released back to the pool"
pool = test_env.get_pool(getmode=oracledb.SPOOL_ATTRVAL_WAIT)
connection = pool.acquire()
cursor = connection.cursor()
cursor.execute("truncate table TestTempTable")
cursor.execute("insert into TestTempTable (IntCol) values (1)")
cursor.close()
pool.release(connection)
pool = test_env.get_pool(getmode=oracledb.SPOOL_ATTRVAL_WAIT)
connection = pool.acquire()
cursor = connection.cursor()
cursor.execute("select count(*) from TestTempTable")
count, = cursor.fetchone()
self.assertEqual(count, 0)
connection.close()
def test_2404_threading(self):
"2404 - test session pool with multiple threads"
self.pool = test_env.get_pool(min=5, max=20, increment=2,
threaded=True,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
threads = []
for i in range(20):
thread = threading.Thread(None, self.__connect_and_drop)
threads.append(thread)
thread.start()
for thread in threads:
thread.join()
def test_2405_threading_with_errors(self):
"2405 - test session pool with multiple threads (with errors)"
self.pool = test_env.get_pool(min=5, max=20, increment=2,
threaded=True,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
threads = []
for i in range(20):
thread = threading.Thread(None, self.__connect_and_generate_error)
threads.append(thread)
thread.start()
for thread in threads:
thread.join()
def test_2406_purity(self):
"2406 - test session pool with various types of purity"
pool = test_env.get_pool(min=1, max=8, increment=1,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
# get connection and set the action
action = "TEST_ACTION"
connection = pool.acquire()
connection.action = action
cursor = connection.cursor()
cursor.execute("select 1 from dual")
cursor.close()
pool.release(connection)
self.assertEqual(pool.opened, 1, "opened (1)")
# verify that the connection still has the action set on it
connection = pool.acquire()
cursor = connection.cursor()
cursor.execute("select sys_context('userenv', 'action') from dual")
result, = cursor.fetchone()
self.assertEqual(result, action)
cursor.close()
pool.release(connection)
self.assertEqual(pool.opened, 1, "opened (2)")
# get a new connection with new purity (should not have state)
connection = pool.acquire(purity=oracledb.ATTR_PURITY_NEW)
cursor = connection.cursor()
cursor.execute("select sys_context('userenv', 'action') from dual")
result, = cursor.fetchone()
self.assertEqual(result, None)
cursor.close()
pool.release(connection)
def test_2407_heterogeneous(self):
"2407 - test heterogeneous pool with user and password specified"
pool = test_env.get_pool(min=2, max=8, increment=3, homogeneous=False,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
self.assertEqual(pool.homogeneous, 0)
conn = pool.acquire()
self.__verify_connection(pool.acquire(), test_env.get_main_user())
conn.close()
conn = pool.acquire(test_env.get_main_user(),
test_env.get_main_password())
self.__verify_connection(conn, test_env.get_main_user())
conn.close()
conn = pool.acquire(test_env.get_proxy_user(),
test_env.get_proxy_password())
self.__verify_connection(conn, test_env.get_proxy_user())
conn.close()
user_str = "%s[%s]" % \
(test_env.get_main_user(), test_env.get_proxy_user())
conn = pool.acquire(user_str, test_env.get_main_password())
self.__verify_connection(conn, test_env.get_proxy_user(),
test_env.get_main_user())
conn.close()
def test_2408_heterogenous_without_user(self):
"2408 - test heterogeneous pool without user and password specified"
pool = test_env.get_pool(user="", password="", min=2, max=8,
increment=3,
getmode=oracledb.SPOOL_ATTRVAL_WAIT,
homogeneous=False)
conn = pool.acquire(test_env.get_main_user(),
test_env.get_main_password())
self.__verify_connection(conn, test_env.get_main_user())
conn.close()
conn = pool.acquire(test_env.get_proxy_user(),
test_env.get_proxy_password())
self.__verify_connection(conn, test_env.get_proxy_user())
conn.close()
user_str = "%s[%s]" % \
(test_env.get_main_user(), test_env.get_proxy_user())
conn = pool.acquire(user_str, test_env.get_main_password())
self.__verify_connection(conn, test_env.get_proxy_user(),
test_env.get_main_user())
def test_2409_heterogeneous_wrong_password(self):
"2409 - test heterogeneous pool with wrong password specified"
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_WAIT,
homogeneous=False)
self.assertRaises(oracledb.DatabaseError, pool.acquire,
test_env.get_proxy_user(),
"this is the wrong password")
def test_2410_tagging_session(self):
"2410 - test tagging a session"
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_NOWAIT)
tag_mst = "TIME_ZONE=MST"
tag_utc = "TIME_ZONE=UTC"
conn = pool.acquire()
self.assertEqual(conn.tag, None)
pool.release(conn, tag=tag_mst)
conn = pool.acquire()
self.assertEqual(conn.tag, None)
conn.tag = tag_utc
conn.close()
conn = pool.acquire(tag=tag_mst)
self.assertEqual(conn.tag, tag_mst)
conn.close()
conn = pool.acquire(tag=tag_utc)
self.assertEqual(conn.tag, tag_utc)
conn.close()
def test_2411_plsql_session_callbacks(self):
"2411 - test PL/SQL session callbacks"
if test_env.get_client_version() < (12, 2):
self.skipTest("PL/SQL session callbacks not supported before 12.2")
callback = "pkg_SessionCallback.TheCallback"
pool = test_env.get_pool(min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_NOWAIT,
session_callback=callback)
tags = [
"NLS_DATE_FORMAT=SIMPLE",
"NLS_DATE_FORMAT=FULL;TIME_ZONE=UTC",
"NLS_DATE_FORMAT=FULL;TIME_ZONE=MST"
]
actual_tags = [None, None, "NLS_DATE_FORMAT=FULL;TIME_ZONE=UTC"]
# truncate PL/SQL session callback log
conn = pool.acquire()
cursor = conn.cursor()
cursor.execute("truncate table PLSQLSessionCallbacks")
conn.close()
# request sessions with each of the first two tags
for tag in tags[:2]:
conn = pool.acquire(tag=tag)
conn.close()
# for the last tag, use the matchanytag flag
conn = pool.acquire(tag=tags[2], matchanytag=True)
conn.close()
# verify the PL/SQL session callback log is accurate
conn = pool.acquire()
cursor = conn.cursor()
cursor.execute("""
select RequestedTag, ActualTag
from PLSQLSessionCallbacks
order by FixupTimestamp""")
results = cursor.fetchall()
expected_results = list(zip(tags, actual_tags))
self.assertEqual(results, expected_results)
conn.close()
def test_2412_tagging_invalid_key(self):
"2412 - testTagging with Invalid key"
pool = test_env.get_pool(getmode=oracledb.SPOOL_ATTRVAL_NOWAIT)
conn = pool.acquire()
self.assertRaises(TypeError, pool.release, conn, tag=12345)
if test_env.get_client_version() >= (12, 2):
self.assertRaises(oracledb.DatabaseError, pool.release, conn,
tag="INVALID_TAG")
def test_2413_close_and_drop_connection_from_pool(self):
"2413 - test dropping/closing a connection from the pool"
pool = test_env.get_pool(min=1, max=8, increment=1,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
conn = pool.acquire()
self.assertEqual(pool.busy, 1, "busy (1)")
self.assertEqual(pool.opened, 1, "opened (1)")
pool.drop(conn)
self.assertEqual(pool.busy, 0, "busy (2)")
self.assertEqual(pool.opened, 0, "opened (2)")
conn = pool.acquire()
self.assertEqual(pool.busy, 1, "busy (3)")
self.assertEqual(pool.opened, 1, "opened (3)")
conn.close()
self.assertEqual(pool.busy, 0, "busy (4)")
self.assertEqual(pool.opened, 1, "opened (4)")
def test_2414_create_new_pure_connection(self):
"2414 - test to ensure pure connections are being created correctly"
pool = test_env.get_pool(min=1, max=2, increment=1,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
connection_1 = pool.acquire()
connection_2 = pool.acquire()
self.assertEqual(pool.opened, 2, "opened (1)")
pool.release(connection_1)
pool.release(connection_2)
connection_3 = pool.acquire(purity=oracledb.ATTR_PURITY_NEW)
self.assertEqual(pool.opened, 2, "opened (2)")
pool.release(connection_3)
def test_2415_reconfigure_pool(self):
"2415 - test to ensure reconfigure() updates pool properties"
pool = test_env.get_pool(min=1, max=2, increment=1,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
self.assertEqual(pool.min, 1, "min (1)")
self.assertEqual(pool.max, 2, "max (2)")
self.assertEqual(pool.increment, 1, "increment (1)")
self.assertEqual(pool.getmode, oracledb.SPOOL_ATTRVAL_WAIT,
"getmode differs")
self.assertEqual(pool.timeout, 0, "timeout (0)")
self.assertEqual(pool.wait_timeout, 5000, "wait_timeout (5000)")
self.assertEqual(pool.max_lifetime_session, 0,
"max_lifetime_sessionmeout (0)")
self.assertEqual(pool.max_sessions_per_shard, 0,
"max_sessions_per_shard (0)")
self.assertEqual(pool.stmtcachesize, 20, "stmtcachesize (20)")
self.assertEqual(pool.ping_interval, 60, "ping_interval (60)")
pool.reconfigure(min=2, max=5, increment=2, timeout=30,
getmode=oracledb.SPOOL_ATTRVAL_TIMEDWAIT,
wait_timeout=3000, max_lifetime_session=20,
max_sessions_per_shard=2, stmtcachesize=30,
ping_interval=30)
self.assertEqual(pool.min, 2, "min (2)")
self.assertEqual(pool.max, 5, "max (5)")
self.assertEqual(pool.increment, 2, "increment (2)")
self.assertEqual(pool.getmode, oracledb.SPOOL_ATTRVAL_TIMEDWAIT,
"getmode differs")
self.assertEqual(pool.timeout, 30, "timeout (30)")
self.assertEqual(pool.wait_timeout, 3000, "wait_timeout (3000)")
self.assertEqual(pool.max_lifetime_session, 20,
"max_lifetime_sessionmeout (20)")
self.assertEqual(pool.max_sessions_per_shard, 2,
"max_sessions_per_shard (2)")
self.assertEqual(pool.stmtcachesize, 30, "stmtcachesize (30)")
self.assertEqual(pool.ping_interval, 30, "ping_interval (30)")
def test_2416_test_reconfigure_pool_with_missing_values(self):
"2416 - test the reconfigure values are changed and rest unchanged"
self.__perform_reconfigure_test("min", 5)
self.__perform_reconfigure_test("max", 20)
self.__perform_reconfigure_test("increment", 5)
self.__perform_reconfigure_test("timeout", 10)
self.__perform_reconfigure_test("wait_timeout", 8000)
self.__perform_reconfigure_test("stmtcachesize", 40)
self.__perform_reconfigure_test("max_lifetime_session", 2000)
self.__perform_reconfigure_test("max_sessions_per_shard", 5)
self.__perform_reconfigure_test("ping_interval", 50)
self.__perform_reconfigure_test("getmode",
oracledb.SPOOL_ATTRVAL_NOWAIT)
def test_2417_setting_each_pool_param(self):
"2417 - test to see if specified parameters are set during creation"
pool = test_env.get_pool(min=1, max=2, increment=1, timeout=10,
wait_timeout=10, max_lifetime_session=20,
max_sessions_per_shard=1, stmtcachesize=25,
ping_interval=25,
getmode=oracledb.SPOOL_ATTRVAL_WAIT)
self.assertEqual(pool.min, 1, "min (1)")
self.assertEqual(pool.max, 2, "max (2)")
self.assertEqual(pool.increment, 1, "increment (1)")
self.assertEqual(pool.getmode, oracledb.SPOOL_ATTRVAL_WAIT,
"getmode differs")
self.assertEqual(pool.timeout, 10, "timeout (10)")
self.assertEqual(pool.wait_timeout, 10, "wait_timeout (10)")
self.assertEqual(pool.max_lifetime_session, 20,
"max_lifetime_sessionmeout (20)")
self.assertEqual(pool.max_sessions_per_shard, 1,
"max_sessions_per_shard (1)")
self.assertEqual(pool.stmtcachesize, 25, "stmtcachesize (25)")
self.assertEqual(pool.ping_interval, 25, "ping_interval (25)")
def test_2418_deprecations(self):
"2418 - test to verify deprecations"
callback = "pkg_SessionCallback.TheCallback"
self.assertRaises(oracledb.ProgrammingError, test_env.get_pool,
min=1, max=2, increment=1, wait_timeout=10,
waitTimeout=10)
self.assertRaises(oracledb.ProgrammingError, test_env.get_pool,
min=1, max=2, increment=1, max_lifetime_session=20,
maxLifetimeSession=20)
self.assertRaises(oracledb.ProgrammingError, test_env.get_pool,
min=1, max=2, increment=1, max_sessions_per_shard=1,
maxSessionsPerShard=1)
self.assertRaises(oracledb.ProgrammingError, test_env.get_pool,
min=2, max=8, increment=3,
getmode=oracledb.SPOOL_ATTRVAL_NOWAIT,
session_callback=callback, sessionCallback=callback)
def test_2419_statement_cache_size(self):
"2419 - test to verify statement cache size is retained"
pool = test_env.get_pool(min=1, max=2, increment=1,
getmode=oracledb.SPOOL_ATTRVAL_WAIT,
stmtcachesize=25)
self.assertEqual(pool.stmtcachesize, 25, "stmtcachesize (25)")
pool.stmtcachesize = 35
self.assertEqual(pool.stmtcachesize, 35, "stmtcachesize (35)")
def test_2420_callable_session_callbacks(self):
"2420 - test that session callbacks are being called correctly"
pool = test_env.get_pool(min=2, max=5, increment=1,
session_callback=self.__callable_session_callback)
# new connection with a tag should invoke the session callback
with pool.acquire(tag="NLS_DATE_FORMAT=SIMPLE") as conn:
cursor = conn.cursor()
cursor.execute("select to_char(2021-05-20) from dual")
result, = cursor.fetchone()
self.assertEqual(self.session_called, True)
# acquiring a connection with the same tag should not invoke the
# session callback
self.session_called = False
with pool.acquire(tag="NLS_DATE_FORMAT=SIMPLE") as conn:
cursor = conn.cursor()
cursor.execute("select to_char(2021-05-20) from dual")
result, = cursor.fetchone()
self.assertEqual(self.session_called, False)
# acquiring a connection with a new tag should invoke the session
# callback
self.session_called = False
with pool.acquire(tag="NLS_DATE_FORMAT=FULL;TIME_ZONE=UTC") as conn:
cursor = conn.cursor()
cursor.execute("select to_char(current_date) from dual")
result, = cursor.fetchone()
self.assertEqual(self.session_called, True)
# acquiring a connection with a new tag and specifying that a
# connection with any tag can be acquired should invoke the session
# callback
self.session_called = False
with pool.acquire(tag="NLS_DATE_FORMAT=FULL;TIME_ZONE=MST", \
matchanytag=True) as conn:
cursor = conn.cursor()
cursor.execute("select to_char(current_date) from dual")
result, = cursor.fetchone()
self.assertEqual(self.session_called, True)
# new session with no tag should invoke the session callback
self.session_called = False
with pool.acquire() as conn:
cursor = conn.cursor()
cursor.execute("select to_char(current_date) from dual")
result, = cursor.fetchone()
self.assertEqual(self.session_called, True)
if __name__ == "__main__":
test_env.run_test_cases()
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