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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.
import wiredtiger, wttest
import os, shutil
from helper import compare_files
from wtbackup import backup_base
from wtdataset import simple_key
from wtscenario import make_scenarios
# test_backup17.py
# Test cursor backup with a block-based incremental cursor and consolidate.
class test_backup17(backup_base):
dir='backup.dir' # Backup directory name
gran="100K"
granval=100*1024
logmax="100K"
uri="table:test"
uri2="table:test2"
conn_config='cache_size=1G,log=(enabled,file_max=%s)' % logmax
pfx = 'test_backup'
# Set the key and value big enough that we modify a few blocks.
bigkey = 'Key' * 100
bigval = 'Value' * 100
nops = 1000
#
# With a file length list, and the consolidate option is used, we expect the incremental
# backup to collapse adjacent blocks and return us lengths that exceed the granularity setting
# and verify that we see multiple blocks. If consolidate is not used, no block lengths should
# ever be greater than the granularity setting.
#
def check_consolidate_sizes(self, file_lens, consolidate):
saw_multiple = False
for size in file_lens:
if size > self.granval:
saw_multiple = True
if consolidate:
self.assertTrue(saw_multiple)
else:
self.assertFalse(saw_multiple)
def test_backup17(self):
self.session.create(self.uri, "key_format=S,value_format=S")
self.session.create(self.uri2, "key_format=S,value_format=S")
self.add_data(self.uri, self.bigkey, self.bigval, True)
self.mult = 0
self.add_data(self.uri2, self.bigkey, self.bigval, True)
os.mkdir(self.dir)
# Open up the backup cursor. This causes a new log file to be created.
# That log file is not part of the list returned. This is a full backup
# primary cursor with incremental configured.
config = 'incremental=(enabled,granularity=%s,this_id="ID1")' % self.gran
bkup_c = self.session.open_cursor('backup:', None, config)
# Now make a full backup and track the log files.
self.take_full_backup(self.dir, bkup_c)
bkup_c.close()
# This is the main part of the test for consolidate. Add data to the first table.
# Then perform the incremental backup with consolidate off (the default). Then add the
# same data to the second table. Perform an incremental backup with consolidate on and
# verify we get fewer, consolidated values.
self.mult = 1
self.add_data(self.uri, self.bigkey, self.bigval, True)
# Do an incremental backup with id 2.
(_, uri1_lens) = self.take_incr_backup(self.dir, 2, False)
self.check_consolidate_sizes(uri1_lens, False)
self.mult = 1
self.add_data(self.uri2, self.bigkey, self.bigval, True)
# Now do an incremental backup with id 3.
(_, uri2_lens) = self.take_incr_backup(self.dir, 3, True)
self.check_consolidate_sizes(uri2_lens, True)
# Assert that we recorded fewer lengths on the consolidated backup.
self.assertLess(len(uri2_lens), len(uri1_lens))
# Assert that we recorded the same total data length for both.
self.assertEqual(sum(uri2_lens), sum(uri1_lens))
if __name__ == '__main__':
wttest.run()
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