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#!/usr/bin/env python
#
# Public Domain 2014-2016 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_txn02.py
# Transactions: commits and rollbacks
#
import fnmatch, os, shutil, time
from suite_subprocess import suite_subprocess
from wtscenario import multiply_scenarios, number_scenarios, prune_scenarios
import wttest
class test_txn09(wttest.WiredTigerTestCase, suite_subprocess):
tablename = 'test_txn09'
uri = 'table:' + tablename
log_enabled = True
types = [
('row', dict(tabletype='row',
create_params = 'key_format=i,value_format=i')),
('var', dict(tabletype='var',
create_params = 'key_format=r,value_format=i')),
('fix', dict(tabletype='fix',
create_params = 'key_format=r,value_format=8t')),
]
op1s = [
('i4', dict(op1=('insert', 4))),
('r1', dict(op1=('remove', 1))),
('u10', dict(op1=('update', 10))),
]
op2s = [
('i6', dict(op2=('insert', 6))),
('r4', dict(op2=('remove', 4))),
('u4', dict(op2=('update', 4))),
]
op3s = [
('i12', dict(op3=('insert', 12))),
('r4', dict(op3=('remove', 4))),
('u4', dict(op3=('update', 4))),
]
op4s = [
('i14', dict(op4=('insert', 14))),
('r12', dict(op4=('remove', 12))),
('u12', dict(op4=('update', 12))),
]
txn1s = [('t1c', dict(txn1='commit')), ('t1r', dict(txn1='rollback'))]
txn2s = [('t2c', dict(txn2='commit')), ('t2r', dict(txn2='rollback'))]
txn3s = [('t3c', dict(txn3='commit')), ('t3r', dict(txn3='rollback'))]
txn4s = [('t4c', dict(txn4='commit')), ('t4r', dict(txn4='rollback'))]
all_scenarios = multiply_scenarios('.', types,
op1s, txn1s, op2s, txn2s, op3s, txn3s, op4s, txn4s)
# This test generates thousands of potential scenarios.
# For default runs, we'll use a small subset of them, for
# long runs (when --long is set) we'll set a much larger limit.
scenarios = number_scenarios(prune_scenarios(all_scenarios, 20, 5000))
# Overrides WiredTigerTestCase
def setUpConnectionOpen(self, dir):
self.home = dir
conn_params = \
'create,error_prefix="%s: ",' % self.shortid() + \
'log=(archive=false,enabled=%s),' % int(self.log_enabled) + \
'transaction_sync=(enabled=false),'
# print "Opening conn at '%s' with config '%s'" % (dir, conn_params)
conn = self.wiredtiger_open(dir, conn_params)
self.pr(`conn`)
self.session2 = conn.open_session()
return conn
# Check that a cursor (optionally started in a new transaction), sees the
# expected values.
def check(self, session, txn_config, expected):
if txn_config:
session.begin_transaction(txn_config)
c = session.open_cursor(self.uri, None)
actual = dict((k, v) for k, v in c if v != 0)
# Search for the expected items as well as iterating
for k, v in expected.iteritems():
self.assertEqual(c[k], v)
c.close()
if txn_config:
session.commit_transaction()
self.assertEqual(actual, expected)
# Check the state of the system with respect to the current cursor and
# different isolation levels.
def check_all(self, current, committed):
# Transactions see their own changes.
# Read-uncommitted transactions see all changes.
# Snapshot and read-committed transactions should not see changes.
self.check(self.session, None, current)
self.check(self.session2, "isolation=snapshot", committed)
self.check(self.session2, "isolation=read-committed", committed)
self.check(self.session2, "isolation=read-uncommitted", current)
def test_ops(self):
# print "Creating %s with config '%s'" % (self.uri, self.create_params)
self.session.create(self.uri, self.create_params)
# Set up the table with entries for 1, 2, 10 and 11.
# We use the overwrite config so insert can update as needed.
c = self.session.open_cursor(self.uri, None, 'overwrite')
c[1] = c[2] = c[10] = c[11] = 1
current = {1:1, 2:1, 10:1, 11:1}
committed = current.copy()
ops = (self.op1, self.op2, self.op3, self.op4)
txns = (self.txn1, self.txn2, self.txn3, self.txn4)
# for ok, txn in zip(ops, txns):
# print ', '.join('%s(%d)[%s]' % (ok[0], ok[1], txn)
for i, ot in enumerate(zip(ops, txns)):
ok, txn = ot
op, k = ok
# Close and reopen the connection and cursor, toggling the log
self.log_enabled = not self.log_enabled
self.reopen_conn()
c = self.session.open_cursor(self.uri, None, 'overwrite')
self.session.begin_transaction(
(self.scenario_number % 2) and 'sync' or None)
# Test multiple operations per transaction by always
# doing the same operation on key k + 1.
k1 = k + 1
# print '%d: %s(%d)[%s]' % (i, ok[0], ok[1], txn)
if op == 'insert' or op == 'update':
c[k] = c[k1] = i + 2
current[k] = current[k1] = i + 2
elif op == 'remove':
del c[k]
del c[k1]
if k in current:
del current[k]
if k1 in current:
del current[k1]
# print current
# Check the state after each operation.
self.check_all(current, committed)
if txn == 'commit':
committed = current.copy()
self.session.commit_transaction()
elif txn == 'rollback':
current = committed.copy()
self.session.rollback_transaction()
# Check the state after each commit/rollback.
self.check_all(current, committed)
if __name__ == '__main__':
wttest.run()
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