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#!/usr/bin/env python
#
# Public Domain 2014-2019 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_assert06.py
# Timestamps: verify key consistent setting for durable timestamps
#
from suite_subprocess import suite_subprocess
import wiredtiger, wttest
def timestamp_str(t):
return '%x' % t
class test_assert06(wttest.WiredTigerTestCase, suite_subprocess):
session_config = 'isolation=snapshot'
def apply_timestamps(self, timestamp):
self.session.prepare_transaction(
'prepare_timestamp=' + timestamp_str(timestamp))
self.session.timestamp_transaction(
'commit_timestamp=' + timestamp_str(timestamp))
self.session.timestamp_transaction(
'durable_timestamp=' + timestamp_str(timestamp))
def test_timestamp_alter(self):
base = 'assert06'
uri = 'file:' + base
cfg_on = 'assert=(durable_timestamp=key_consistent)'
cfg_off = 'assert=(durable_timestamp=none)'
msg_ooo='/out of order/'
msg_usage='/used inconsistently/'
# Create the table without the key consistency checking turned on.
# Create a few items breaking the rules. Then alter the setting and
# verify the inconsistent usage is detected.
self.session.create(uri, 'key_format=S,value_format=S')
# Insert a data item at timestamp 2.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value2'
self.apply_timestamps(2)
self.session.commit_transaction()
c.close()
# Modify the data item at timestamp 1.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value1'
self.apply_timestamps(1)
self.session.commit_transaction()
c.close()
# Insert a non-timestamped item. Then modify with a timestamp. And
# again modify without a timestamp.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots'
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value2'
self.apply_timestamps(2)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots2'
self.session.commit_transaction()
c.close()
# We must move the oldest timestamp forward in order to alter.
# Otherwise alter closing the file will fail with EBUSY.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(2))
# Now alter the setting and make sure we detect incorrect usage.
self.session.alter(uri, cfg_on)
# Detect decreasing timestamp.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value5'
self.apply_timestamps(5)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value4'
self.apply_timestamps(4)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_ooo)
c.close()
# Detect not using a timestamp.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value_nots3'
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
# Detect using a timestamp on the non-timestamp key.
# We must first use a non timestamped operation on the key
# in order to violate the key consistency condition in the
# following transaction.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots3'
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value3'
self.apply_timestamps(3)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
self.session.checkpoint()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts1'], 'value5')
self.assertEquals(c['key_nots'], 'value_nots3')
c.close()
# Test to make sure that key consistency can be turned off
# after turning it on.
self.conn.set_timestamp('oldest_timestamp=' + timestamp_str(5))
self.session.alter(uri, cfg_off)
# Detection is off we can successfully change the same key with and
# without a timestamp.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots4'
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value6'
self.apply_timestamps(6)
self.session.commit_transaction()
c.close()
def test_timestamp_usage(self):
base = 'assert06'
uri = 'file:' + base
msg_ooo='/out of order/'
msg_usage='/used inconsistently/'
# Create the table with the key consistency checking turned on.
# That checking will verify any individual key is always or never
# used with a timestamp. And if it is used with a timestamp that
# the timestamps are in increasing order for that key.
self.session.create(uri, 'key_format=S,value_format=S,assert=(durable_timestamp=key_consistent)')
# Insert a data item at timestamp 2.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value2'
self.apply_timestamps(2)
self.session.commit_transaction()
c.close()
# Modify the data item at timestamp 1. We should detect it is wrong.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts1'] = 'value1'
self.apply_timestamps(1)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_ooo)
c.close()
# Make sure we can successfully add a different key at timestamp 1.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts2'] = 'value1'
self.apply_timestamps(1)
self.session.commit_transaction()
c.close()
#
# Insert key_ts3 at timestamp 10 and key_ts4 at 15.
# Then modify both keys in one transaction at timestamp 13.
# We should not be allowed to modify the one from 15.
# So the whole transaction should fail.
#
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts3'] = 'value10'
self.apply_timestamps(10)
self.session.commit_transaction()
self.session.begin_transaction()
c['key_ts4'] = 'value15'
self.apply_timestamps(15)
self.session.commit_transaction()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts3'] = 'value13'
c['key_ts4'] = 'value13'
self.apply_timestamps(13)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_ooo)
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts3'], 'value10')
self.assertEquals(c['key_ts4'], 'value15')
c.close()
#
# Separately, we should be able to update key_ts3 at timestamp 10
# but not update key_ts4 inserted at timestamp 15.
#
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts3'] = 'value13'
self.apply_timestamps(13)
self.session.commit_transaction()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts4'] = 'value13'
self.apply_timestamps(13)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_ooo)
c.close()
# Make sure multiple update attempts still fail and eventually
# succeed with a later timestamp. This tests that aborted entries
# in the update chain are not considered for the timestamp check.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts4'] = 'value14'
self.apply_timestamps(14)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_ooo)
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts4'], 'value15')
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts4'] = 'value16'
self.apply_timestamps(16)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts4'], 'value16')
c.close()
# Now try to modify a key previously used with timestamps without
# one. We should get the inconsistent usage message.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts4'] = 'value_nots'
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts4'] = 'value_nots'
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts4'], 'value16')
c.close()
# Now confirm the other way. Create a key without a timestamp and then
# attempt to modify it with a timestamp. The only error checking that
# makes sense here is the inconsistent usage.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots'
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value16'
self.apply_timestamps(16)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value_nots1'
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value17'
self.apply_timestamps(17)
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(), msg_usage)
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_nots'], 'value_nots1')
c.close()
# Confirm it is okay to set the timestamp in the middle or end of the
# transaction. That should set the timestamp for the whole thing.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts5'] = 'value_notsyet'
c['key_ts5'] = 'value20'
self.apply_timestamps(20)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts5'], 'value20')
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts6'] = 'value_notsyet'
c['key_ts6'] = 'value21_after'
self.apply_timestamps(21)
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.assertEquals(c['key_ts6'], 'value21_after')
c.close()
# Confirm it is okay to set the durable timestamp on the commit call.
# That should set the timestamp for the whole thing.
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_ts6'] = 'value_committs1'
c['key_ts6'] = 'value22'
self.session.prepare_transaction(
'prepare_timestamp=' + timestamp_str(22))
self.session.timestamp_transaction(
'commit_timestamp=' + timestamp_str(22))
self.session.timestamp_transaction(
'durable_timestamp=' + timestamp_str(22))
self.session.commit_transaction()
c.close()
c = self.session.open_cursor(uri)
self.session.begin_transaction()
c['key_nots'] = 'value23'
self.session.prepare_transaction(
'prepare_timestamp=' + timestamp_str(23))
self.session.timestamp_transaction(
'commit_timestamp=' + timestamp_str(23))
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.commit_transaction(
'durable_timestamp=' + timestamp_str(23)), msg_usage)
c.close()
if __name__ == '__main__':
wttest.run()
|
