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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.
import wiredtiger, wttest
import os
from wtbackup import backup_base
from wtscenario import make_scenarios
# test_backup10.py
# Test cursor backup with a duplicate backup cursor.
class test_backup10(backup_base):
dir='backup.dir' # Backup directory name
logmax="100K"
uri="table:test"
pfx = 'test_backup'
scenarios = make_scenarios([
('removing', dict(remove='true')),
('not-removing', dict(remove='false')),
])
# Create a large cache, otherwise this test runs quite slowly.
def conn_config(self):
return 'cache_size=1G,log=(remove=%s,' % self.remove + \
'enabled,file_max=%s)' % self.logmax
# Run background inserts while running checkpoints repeatedly.
def test_backup10(self):
log2 = "WiredTigerLog.0000000002"
log3 = "WiredTigerLog.0000000003"
log4 = "WiredTigerLog.0000000004"
self.session.create(self.uri, "key_format=S,value_format=S")
# Insert small amounts of data at a time stopping after we
# cross into log file 2.
while not os.path.exists(log2):
self.add_data(self.uri, 'key', 'value')
# Open up the backup cursor. This causes a new log file to be created.
# That log file is not part of the list returned.
os.mkdir(self.dir)
bkup_c = self.session.open_cursor('backup:', None, None)
# Add some data that will appear in log file 3.
self.add_data(self.uri, 'key', 'value')
self.session.log_flush('sync=on')
# Now make a full backup and track the log files.
all_files = self.take_full_backup(self.dir, bkup_c)
orig_logs = [file for file in all_files if "WiredTigerLog" in file]
# Now open a duplicate backup cursor.
config = 'target=("log:")'
dupc = self.session.open_cursor(None, bkup_c, config)
dup_logs = self.take_log_backup(bkup_c, self.dir, orig_logs, dupc)
# We expect that the duplicate logs are a superset of the
# original logs. And we expect the difference to be the
# addition of two log files, one switch when opening the backup
# cursor and a switch when opening the duplicate cursor.
orig_set = set(orig_logs)
dup_set = set(dup_logs)
self.assertTrue(dup_set.issuperset(orig_set))
diff = dup_set.difference(orig_set)
self.assertEqual(len(diff), 1)
self.assertTrue(log3 in dup_set)
self.assertFalse(log3 in orig_set)
self.assertFalse(log4 in dup_set)
# Test a few error cases now.
# - We cannot make multiple duplcate backup cursors.
# - We cannot duplicate the duplicate backup cursor.
# - We must use the log target.
msg = "/already a duplicate backup cursor open/"
# Test multiple duplicate backup cursors.
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda:self.assertEquals(self.session.open_cursor(None,
bkup_c, config), 0), msg)
# Test duplicate of duplicate backup cursor.
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda:self.assertEquals(self.session.open_cursor(None,
dupc, config), 0), msg)
dupc.close()
# Test we must use the log target.
msg = "/must be for /"
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda:self.assertEquals(self.session.open_cursor(None,
bkup_c, None), 0), msg)
bkup_c.close()
# 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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