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#!/usr/bin/env python
#
# Public Domain 2014-present 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_backup09.py
# Verify opening a backup cursor forces a log file switch.
#
import os, shutil, stat
import helper, wiredtiger, wttest
from wtscenario import make_scenarios
class test_backup09(wttest.WiredTigerTestCase):
# Have log writes go directly to the OS to avoid log_flush calls before
# performing file copies not technically part of the backup cursor.
conn_config = 'config_base=false,create,' \
'log=(enabled),transaction_sync=(enabled,method=none)'
uri = 'table:coll1'
backup_dir = 'backup.dir'
types = [
# checkpoint: whether to explicitly checkpoint some data before opening
# the backup cursor.
#
# all_log_files: whether to copy all files in the source directory, or
# only the files returned from the backup cursor. Copying the
# additional log files will result in more operations being recovered.
('checkpoint', dict(checkpoint=True, all_log_files=False)),
('no_checkpoint', dict(checkpoint=False, all_log_files=False)),
('all_log_files', dict(checkpoint=True, all_log_files=True)),
]
scenarios = make_scenarios(types)
def data_and_start_backup(self):
self.session.create(self.uri, 'key_format=i,value_format=i')
cursor = self.session.open_cursor(self.uri)
doc_id = 0
for i in range(10):
doc_id += 1
cursor[doc_id] = doc_id
if self.checkpoint:
self.session.checkpoint()
for i in range(10):
doc_id += 1
cursor[doc_id] = doc_id
last_doc_in_backup = doc_id
self.assertEqual(1, len(filter(lambda x:
x.startswith('WiredTigerLog.'), os.listdir('.'))))
backup_cursor = self.session.open_cursor('backup:')
self.assertEqual(2, len(filter(lambda x:
x.startswith('WiredTigerLog.'), os.listdir('.'))))
for i in range(10):
doc_id += 1
cursor[doc_id] = doc_id
cursor.close()
return backup_cursor, last_doc_in_backup, doc_id
def copy_and_restore(self, backup_cursor, last_doc_in_backup, last_doc_in_data):
log_files_to_copy = 0
os.mkdir(self.backup_dir)
if self.all_log_files:
helper.copy_wiredtiger_home('.', self.backup_dir)
log_files_copied = filter(lambda x: x.startswith('WiredTigerLog.'), os.listdir(self.backup_dir))
self.assertEqual(len(log_files_copied), 2)
else:
while True:
ret = backup_cursor.next()
if ret != 0:
break
shutil.copy(backup_cursor.get_key(), self.backup_dir)
if backup_cursor.get_key().startswith('WiredTigerLog.'):
log_files_to_copy += 1
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
self.assertEqual(log_files_to_copy, 1)
backup_conn = self.wiredtiger_open(self.backup_dir, self.conn_config)
if self.all_log_files:
self.captureout.checkAdditionalPattern(self, 'Both WiredTiger.turtle and WiredTiger.backup exist.*')
session = backup_conn.open_session()
cursor = session.open_cursor(self.uri)
if self.all_log_files:
doc_cnt = 0
for key, val in cursor:
doc_cnt += 1
self.assertLessEqual(key, last_doc_in_data)
self.assertEqual(doc_cnt, last_doc_in_data)
else:
doc_cnt = 0
for key, val in cursor:
doc_cnt += 1
self.assertLessEqual(key, last_doc_in_backup)
self.assertEqual(doc_cnt, last_doc_in_backup)
def test_backup_rotates_log(self):
if os.name == "nt" and self.all_log_files:
self.skipTest('Unix specific test skipped on Windows')
# Add some data, open a backup cursor, and add some more data. Return
# the value of the last document that should appear on a restore.
backup_cursor, last_doc_in_backup, last_doc_in_data = \
self.data_and_start_backup()
# Copy the files returned via the backup cursor and bring up WiredTiger
# on the destination. Verify no document later than last_doc exists.
self.copy_and_restore(
backup_cursor, last_doc_in_backup, last_doc_in_data)
if __name__ == '__main__':
wttest.run()
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