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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.
from helper import copy_wiredtiger_home
import wiredtiger, wttest
from wtdataset import SimpleDataSet
from wtscenario import make_scenarios
def timestamp_str(t):
return '%x' %t
# test_durable_ts03.py
# Checking visibility and durability of updates with durable_timestamp
class test_durable_ts03(wttest.WiredTigerTestCase):
keyfmt = [
('row-string', dict(keyfmt='S')),
('row-int', dict(keyfmt='i')),
('column-store', dict(keyfmt='r')),
]
types = [
('file', dict(uri='file', ds=SimpleDataSet)),
('lsm', dict(uri='lsm', ds=SimpleDataSet)),
('table-simple', dict(uri='table', ds=SimpleDataSet)),
]
iso_types = [
('isolation_read_committed', dict(isolation='read-committed')),
('isolation_default', dict(isolation='')),
('isolation_snapshot', dict(isolation='snapshot'))
]
scenarios = make_scenarios(types, keyfmt, iso_types)
def skip(self):
return self.keyfmt == 'r' and \
(self.ds.is_lsm() or self.uri == 'lsm')
# Test durable timestamp.
def test_durable_ts03(self):
if self.skip():
return
# Build an object.
uri = self.uri + ':test_durable_ts03'
ds = self.ds(self, uri, 50, key_format=self.keyfmt)
ds.populate()
session = self.conn.open_session()
cursor = session.open_cursor(uri, None)
# Set stable timestamp to checkpoint initial data set.
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(100))
self.session.checkpoint()
# Scenario: 1
# Check to see commit timestamp > durable timestamap, returns error.
session.begin_transaction()
self.assertEquals(cursor.next(), 0)
for i in range(1, 10):
cursor.set_value(ds.value(111))
self.assertEquals(cursor.update(), 0)
self.assertEquals(cursor.next(), 0)
session.prepare_transaction('prepare_timestamp=' + timestamp_str(150))
msg = "/older than the first commit timestamp/"
# Check for error when commit timestamp > durable timestamp.
self.assertRaisesWithMessage(wiredtiger.WiredTigerError, lambda: session.commit_transaction('commit_timestamp=' + timestamp_str(200) + ',durable_timestamp=' + timestamp_str(180)), msg)
# Set a stable timestamp so that first update value is durable.
self.conn.set_timestamp('stable_timestamp=' + timestamp_str(250))
# Scenario: 2
# Check to see durable timestamp < stable timestamp, returns error.
# Update all values with value 222 i.e. second update value.
self.assertEquals(cursor.reset(), 0)
session.begin_transaction()
self.assertEquals(cursor.next(), 0)
for i in range(1, 10):
cursor.set_value(ds.value(222))
self.assertEquals(cursor.update(), 0)
self.assertEquals(cursor.next(), 0)
session.prepare_transaction('prepare_timestamp=' + timestamp_str(150))
msg = "/older than stable timestamp/"
# Check that error is returned when durable timestamp < stable timestamp.
self.assertRaisesWithMessage(wiredtiger.WiredTigerError, lambda: session.commit_transaction('commit_timestamp=' + timestamp_str(200) + ',durable_timestamp=' + timestamp_str(240)), msg)
if __name__ == '__main__':
wttest.run()
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