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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 suite_subprocess import suite_subprocess
from wtdataset import simple_key
from wtscenario import make_scenarios
# test_backup16.py
# Ensure incremental backup doesn't copy unnecessary files.
class test_backup16(wttest.WiredTigerTestCase, suite_subprocess):
conn_config='cache_size=1G,log=(enabled,file_max=100K)'
counter=1
logmax='100K'
mult=1
nops=10
uri1='table:test1'
uri2='table:test2'
uri3='table:test3'
uri4='table:test4'
uri5='table:test5'
pfx = 'test_backup'
# Set the key and value big enough that we modify a few blocks.
bigkey = 'Key' * 10
bigval = 'Value' * 10
def add_data(self, uri):
c = self.session.open_cursor(uri)
for i in range(0, self.nops):
num = i + (self.mult * self.nops)
key = self.bigkey + str(num)
val = self.bigval + str(num)
c[key] = val
self.session.checkpoint()
c.close()
# Increase the multiplier so that later calls insert unique items.
self.mult += 1
def verify_incr_backup(self, expected_file_list):
bkup_config = ('incremental=(src_id="ID' + str(self.counter-1) +
'",this_id="ID' + str(self.counter) + '")')
bkup_cur = self.session.open_cursor('backup:', None, bkup_config)
self.counter += 1
num_files = 0
# Verify the files included in the incremental backup are the ones we expect.
while True:
ret = bkup_cur.next()
if ret != 0:
break
bkup_file = bkup_cur.get_key()
if bkup_file.startswith('WiredTiger'):
continue
incr_config = 'incremental=(file=' + bkup_file + ')'
incr_cur = self.session.open_cursor(None, bkup_cur, incr_config)
while True:
ret = incr_cur.next()
if ret != 0:
break
# Check this file is one we are expecting.
self.assertTrue(bkup_file in expected_file_list)
num_files += 1
# Ensure that the file we changed has content to copy and the file we didn't
# change doesn't have any content to copy.
# Note:
# Pretty sure this is the file size and not the number of bytes to copy.
incr_list = incr_cur.get_keys()
self.assertNotEqual(incr_list[1], 0)
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
incr_cur.close()
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
bkup_cur.close()
# Ensure that the backup saw all the expected files.
self.assertEqual(num_files, len(expected_file_list))
def test_backup16(self):
self.session.create(self.uri1, 'key_format=S,value_format=S')
self.session.create(self.uri2, 'key_format=S,value_format=S')
self.session.create(self.uri3, 'key_format=S,value_format=S')
self.add_data(self.uri1)
self.add_data(self.uri2)
# Checkpoint and simulate full backup.
self.session.checkpoint()
config = 'incremental=(enabled,granularity=1M,this_id="ID0")'
cursor = self.session.open_cursor('backup:', None, config)
cursor.close()
# Create new tables, add more data and checkpoint.
self.session.create(self.uri4, "key_format=S,value_format=S")
self.session.create(self.uri5, "key_format=S,value_format=S")
self.add_data(self.uri1)
self.add_data(self.uri5)
self.session.checkpoint()
# Validate these three files are included in the incremental.
files_to_backup = ['test1.wt', 'test4.wt', 'test5.wt']
self.verify_incr_backup(files_to_backup)
# Add more data and checkpoint.
self.add_data(self.uri3)
self.add_data(self.uri5)
self.session.checkpoint()
# Validate these three files are included in the incremental.
files_to_backup = ['test3.wt', 'test4.wt', 'test5.wt']
self.verify_incr_backup(files_to_backup)
# Perform one more incremental without changing anything. We should only
# see one file.
files_to_backup = ['test4.wt']
self.verify_incr_backup(files_to_backup)
if __name__ == '__main__':
wttest.run()
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