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#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# test_prepare06.py
# Prepare: Rounding up prepared transactions Timestamps.
#
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
from wtscenario import make_scenarios
class test_prepare06(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_prepare06'
uri = 'table:' + tablename
session_config = 'isolation=snapshot'
key_format_values = [
('column', dict(key_format='r')),
('integer_row', dict(key_format='i')),
]
scenarios = make_scenarios(key_format_values)
def test_timestamp_api(self):
self.session.create(self.uri, 'key_format={},value_format=i'.format(self.key_format))
c = self.session.open_cursor(self.uri)
# It is illegal to set the prepare timestamp older than the oldest
# timestamp.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(20))
self.conn.set_timestamp('stable_timestamp=' + self.timestamp_str(30))
self.session.begin_transaction()
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.prepare_transaction(
'prepare_timestamp=' + self.timestamp_str(10)),
"/older than the oldest timestamp/")
self.session.rollback_transaction()
# Check setting a prepared transaction timestamps earlier than the
# oldest timestamp is valid with roundup_timestamps settings.
self.session.begin_transaction('roundup_timestamps=(prepared=true)')
self.session.prepare_transaction('prepare_timestamp=' + self.timestamp_str(10))
self.session.timestamp_transaction('commit_timestamp=' + self.timestamp_str(15))
self.session.timestamp_transaction('durable_timestamp=' + self.timestamp_str(35))
self.session.commit_transaction()
'''
Commented out for now: the system panics if we fail after preparing a transaction.
# Check setting a prepared transaction timestamps earlier than the
# oldest timestamp is invalid, if durable timestamp is less than the
# stable timestamp.
self.session.begin_transaction('roundup_timestamps=(prepared=true)')
self.session.prepare_transaction('prepare_timestamp=' + self.timestamp_str(10))
self.session.timestamp_transaction('commit_timestamp=' + self.timestamp_str(15))
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.timestamp_transaction(
'durable_timestamp=' + self.timestamp_str(25)),
"/is less than the stable timestamp/")
self.session.rollback_transaction()
'''
# Check the cases with an active reader.
# Start a new reader to have an active read timestamp.
s_reader = self.conn.open_session()
s_reader.begin_transaction('read_timestamp=' + self.timestamp_str(40))
# It is illegal to set the prepare timestamp as earlier than an active
# read timestamp even with roundup_timestamps settings. This is only
# checked in diagnostic builds.
if wiredtiger.diagnostic_build():
self.session.begin_transaction('roundup_timestamps=(prepared=true)')
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.prepare_transaction(
'prepare_timestamp=' + self.timestamp_str(10)),
"/must be greater than the latest active read timestamp/")
self.session.rollback_transaction()
# It is illegal to set the prepare timestamp the same as an active read
# timestamp even with roundup_timestamps settings.
self.session.begin_transaction('roundup_timestamps=(prepared=true)')
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.prepare_transaction(
'prepare_timestamp=' + self.timestamp_str(40)),
"/must be greater than the latest active read timestamp/")
self.session.rollback_transaction()
'''
Commented out for now: the system panics if we fail after preparing a transaction.
# It is illegal to set a commit timestamp less than the prepare
# timestamp of a transaction.
self.session.begin_transaction()
c[1] = 1
self.session.prepare_transaction('prepare_timestamp=' + self.timestamp_str(45))
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(
'commit_timestamp=' + self.timestamp_str(30)),
"/less than the prepare timestamp/")
'''
'''
Commented out for now: the system panics if we fail after preparing a transaction.
# It is legal to set a commit timestamp older than prepare timestamp of
# a transaction with roundup_timestamps settings.
self.session.begin_transaction('roundup_timestamps=(prepared=true)')
c[1] = 1
self.session.prepare_transaction(
'prepare_timestamp=' + self.timestamp_str(45))
self.session.timestamp_transaction('commit_timestamp=' + self.timestamp_str(30))
#self.session.timestamp_transaction('durable_timestamp=' + self.timestamp_str(30))
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.timestamp_transaction(
'durable_timestamp=' + self.timestamp_str(30)),
"/is less than the commit timestamp/")
self.session.rollback_transaction()
'''
s_reader.commit_transaction()
if __name__ == '__main__':
wttest.run()
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