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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_backup12.py
# Test cursor backup with a block-based incremental cursor.
class test_backup12(wttest.WiredTigerTestCase, suite_subprocess):
conn_config='cache_size=1G,log=(enabled,file_max=100K)'
dir='backup.dir' # Backup directory name
logmax="100K"
uri="table:test"
uri2="table:test2"
uri_rem="table:test_rem"
nops=1000
mult=0
pfx = 'test_backup'
# Set the key and value big enough that we modify a few blocks.
bigkey = 'Key' * 100
bigval = 'Value' * 100
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 test_backup12(self):
self.session.create(self.uri, "key_format=S,value_format=S")
self.session.create(self.uri2, "key_format=S,value_format=S")
self.session.create(self.uri_rem, "key_format=S,value_format=S")
self.add_data(self.uri)
self.add_data(self.uri2)
self.add_data(self.uri_rem)
# 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.
os.mkdir(self.dir)
#
# Note, this first backup is actually done before a checkpoint is taken.
#
config = 'incremental=(enabled,granularity=1M,this_id="ID1")'
bkup_c = self.session.open_cursor('backup:', None, config)
# Add more data while the backup cursor is open.
self.add_data(self.uri)
# Now copy the files returned by the backup cursor.
all_files = []
while True:
ret = bkup_c.next()
if ret != 0:
break
newfile = bkup_c.get_key()
sz = os.path.getsize(newfile)
self.pr('Copy from: ' + newfile + ' (' + str(sz) + ') to ' + self.dir)
shutil.copy(newfile, self.dir)
all_files.append(newfile)
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
# Now open a duplicate backup cursor.
# We *can* use a log target duplicate on an incremental primary backup so that
# a backup process can get all the log files that occur while that primary cursor
# is open.
config = 'target=("log:")'
dupc = self.session.open_cursor(None, bkup_c, config)
dup_logs = []
while True:
ret = dupc.next()
if ret != 0:
break
newfile = dupc.get_key()
self.assertTrue("WiredTigerLog" in newfile)
sz = os.path.getsize(newfile)
if (newfile not in all_files):
self.pr('DUP: Copy from: ' + newfile + ' (' + str(sz) + ') to ' + self.dir)
shutil.copy(newfile, self.dir)
# Record all log files returned for later verification.
dup_logs.append(newfile)
all_files.append(newfile)
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
dupc.close()
bkup_c.close()
# Add more data.
self.add_data(self.uri)
self.add_data(self.uri2)
# Drop a table.
self.session.drop(self.uri_rem)
# Now do an incremental backup.
config = 'incremental=(src_id="ID1",this_id="ID2")'
bkup_c = self.session.open_cursor('backup:', None, config)
self.pr('Open backup cursor ID1')
bkup_files = []
while True:
ret = bkup_c.next()
if ret != 0:
break
newfile = bkup_c.get_key()
config = 'incremental=(file=' + newfile + ')'
self.pr('Open incremental cursor with ' + config)
dup_cnt = 0
dupc = self.session.open_cursor(None, bkup_c, config)
bkup_files.append(newfile)
all_files.append(newfile)
while True:
ret = dupc.next()
if ret != 0:
break
incrlist = dupc.get_keys()
offset = incrlist[0]
size = incrlist[1]
curtype = incrlist[2]
# 1 is WT_BACKUP_FILE
# 2 is WT_BACKUP_RANGE
self.assertTrue(curtype == 1 or curtype == 2)
if curtype == 1:
self.pr('Copy from: ' + newfile + ' (' + str(sz) + ') to ' + self.dir)
shutil.copy(newfile, self.dir)
else:
self.pr('Range copy file ' + newfile + ' offset ' + str(offset) + ' len ' + str(size))
rfp = open(newfile, "r+b")
wfp = open(self.dir + '/' + newfile, "w+b")
rfp.seek(offset, 0)
wfp.seek(offset, 0)
buf = rfp.read(size)
wfp.write(buf)
rfp.close()
wfp.close()
dup_cnt += 1
dupc.close()
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
bkup_c.close()
# We need to remove files in the backup directory that are not in the current backup.
all_set = set(all_files)
bkup_set = set(bkup_files)
rem_files = list(all_set - bkup_set)
for l in rem_files:
self.pr('Remove file: ' + self.dir + '/' + l)
os.remove(self.dir + '/' + l)
# After the full backup, open and recover the backup database.
backup_conn = self.wiredtiger_open(self.dir)
backup_conn.close()
if __name__ == '__main__':
wttest.run()
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