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#!/usr/bin/env python
#
# Public Domain 2014-2020 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_txn10.py
# Transactions: commits and rollbacks
#
import fnmatch, os, shutil, time
from suite_subprocess import suite_subprocess
import wttest
class test_txn10(wttest.WiredTigerTestCase, suite_subprocess):
t1 = 'table:test_txn10_1'
t2 = 'table:test_txn10_2'
create_params = 'key_format=i,value_format=i'
conn_config = 'log=(archive=false,enabled,file_max=100K),' + \
'transaction_sync=(method=dsync,enabled)'
def simulate_crash_restart(self, olddir, newdir):
''' Simulate a crash from olddir and restart in newdir. '''
# with the connection still open, copy files to new directory
shutil.rmtree(newdir, ignore_errors=True)
os.mkdir(newdir)
for fname in os.listdir(olddir):
fullname = os.path.join(olddir, fname)
# Skip lock file on Windows since it is locked
if os.path.isfile(fullname) and \
"WiredTiger.lock" not in fullname and \
"Tmplog" not in fullname and \
"Preplog" not in fullname:
shutil.copy(fullname, newdir)
# close the original connection and open to new directory
self.close_conn()
self.conn = self.setUpConnectionOpen(newdir)
self.session = self.setUpSessionOpen(self.conn)
def test_recovery(self):
''' Check for bugs in file ID allocation. '''
# Here's the strategy:
# - Create a table (t1).
# - Do a clean restart.
# - Create another table (t2).
# - Insert data into t2.
# - Make recovery run.
#
# If we aren't tracking file IDs properly, it's possible that
# we'd end up apply the log records for t2 to table t1.
self.session.create(self.t1, self.create_params)
self.reopen_conn()
self.session.create(self.t2, self.create_params)
c = self.session.open_cursor(self.t2, None, None)
for i in range(10000):
c[i] = i + 1
c.close()
self.simulate_crash_restart(".", "RESTART")
c = self.session.open_cursor(self.t2, None, None)
i = 0
for key, value in c:
self.assertEqual(i, key)
self.assertEqual(i+1, value)
i += 1
self.assertEqual(i, 10000)
c.close()
c = self.session.open_cursor(self.t1, None, None)
i = 0
for key, value in c:
i += 1
self.assertEqual(i, 0)
c.close()
if __name__ == '__main__':
wttest.run()
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