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#!/usr/bin/env python
#
# Public Domain 2014-2018 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.
import fnmatch, os, time
import wiredtiger, wttest
from wtscenario import make_scenarios
# test_config07.py
# Test that log files extend as configured and as documented.
class test_config07(wttest.WiredTigerTestCase):
uri = "table:test"
entries = 5000
K = 1024
log_size = K * K
extend_len = [
('default', dict(log_extend_len='()', expected_log_size = log_size)),
('empty', dict(log_extend_len='(log=)', expected_log_size = log_size)),
('disable', dict(log_extend_len='(log=0)', expected_log_size = 128)),
('100K', dict(log_extend_len='(log=100K)', expected_log_size = 100 * K)),
('too_small', dict(log_extend_len='(log=20K)', expected_log_size = None)),
('too_large', dict(log_extend_len='(log=20G)', expected_log_size = None)),
('small_in_allowed range', dict(log_extend_len='(log=200K)',
expected_log_size = 200 * K)),
('large_in_allowed_range', dict(log_extend_len='(log=900K)',
expected_log_size = 900 * K)),
('larger_than_log_file_size', dict(log_extend_len='(log=20M)',
expected_log_size = log_size)),
('with_data_file_extend_conf', dict(log_extend_len='(log=100K,data=16M)',
expected_log_size = 100 * K)),
]
scenarios = make_scenarios(extend_len)
def populate(self):
cur = self.session.open_cursor(self.uri, None, None)
for i in range(0, self.entries):
# Make the values about 200 bytes. That's about 1MB of data for
# 5000 records, generating 10 log files used plus more for overhead.
cur[i] = "abcde" * 40
cur.close()
def checkLogFileSize(self, size):
# Wait for a log file to be preallocated. Avoid timing problems, but
# assert that a file is created within 1 minute.
for i in range(1,60):
logs = fnmatch.filter(os.listdir('.'), "*Prep*")
if logs:
f = logs[-1]
file_size = os.stat(f).st_size
self.assertEqual(size, file_size)
break
time.sleep(1)
self.assertTrue(logs)
def test_log_extend(self):
self.conn.close()
msg = '/invalid log extend length/'
config = 'log=(enabled,file_max=1M),file_extend=' + self.log_extend_len
configarg = 'create,statistics=(fast)' + ',' + config
# Expect an error when an invalid log extend size is provided.
if self.expected_log_size is None:
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.wiredtiger_open('.', configarg), msg)
return
self.conn = self.wiredtiger_open('.', configarg)
self.session = self.conn.open_session(None)
# Create a table, insert data in it to trigger log file writes.
self.session.create(self.uri, 'key_format=i,value_format=S')
self.populate()
self.session.checkpoint()
self.checkLogFileSize(self.expected_log_size)
if __name__ == '__main__':
wttest.run()
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