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#!/usr/bin/env python
#
# Public Domain 2014-2016 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 glob, os, shutil, string
import wiredtiger, wttest
from helper import compare_files
from suite_subprocess import suite_subprocess
from wtdataset import SimpleDataSet, ComplexDataSet, ComplexLSMDataSet
from wtscenario import make_scenarios
# test_backup03.py
# Utilities: wt backup
# Test cursor backup with target URIs
class test_backup_target(wttest.WiredTigerTestCase, suite_subprocess):
dir='backup.dir' # Backup directory name
# This test is written to test LSM hot backups: we test a simple LSM object
# and a complex LSM object, but we can't test them both at the same time
# because we need to load fast enough the merge threads catch up, and so we
# test the real database, not what the database might look like after the
# merging settles down.
#
# The way it works is we create 4 objects, only one of which is large, then
# we do a hot backup of one or more of the objects and compare the original
# to the backup to confirm the backup is correct.
pfx = 'test_backup'
objs = [ # Objects
('table:' + pfx + '.1', SimpleDataSet, 0),
( 'lsm:' + pfx + '.2', SimpleDataSet, 1),
('table:' + pfx + '.3', ComplexDataSet, 2),
('table:' + pfx + '.4', ComplexLSMDataSet, 3),
]
list = [
( 'backup_1', dict(big=0,list=[0])), # Target objects individually
( 'backup_2', dict(big=1,list=[1])),
( 'backup_3', dict(big=2,list=[2])),
( 'backup_4', dict(big=3,list=[3])),
('backup_5a', dict(big=0,list=[0,2])), # Target groups of objects
('backup_5b', dict(big=2,list=[0,2])),
('backup_6a', dict(big=1,list=[1,3])),
('backup_6b', dict(big=3,list=[1,3])),
('backup_7a', dict(big=0,list=[0,1,2])),
('backup_7b', dict(big=1,list=[0,1,2])),
('backup_7c', dict(big=2,list=[0,1,2])),
('backup_8a', dict(big=0,list=[0,1,2,3])),
('backup_8b', dict(big=1,list=[0,1,2,3])),
('backup_8c', dict(big=2,list=[0,1,2,3])),
('backup_8d', dict(big=3,list=[0,1,2,3])),
('backup_9', dict(big=3,list=[])), # Backup everything
]
scenarios = make_scenarios(list, prune=3, prunelong=1000)
# Create a large cache, otherwise this test runs quite slowly.
conn_config = 'cache_size=1G'
# Populate a set of objects.
def populate(self):
for i in self.objs:
if self.big == i[2]:
rows = 200000 # Big object
else:
rows = 1000 # Small object
i[1](self, i[0], rows).populate()
# Backup needs a checkpoint
self.session.checkpoint(None)
# Compare the original and backed-up files using the wt dump command.
def compare(self, uri):
self.runWt(['dump', uri], outfilename='orig')
self.runWt(['-h', self.dir, 'dump', uri], outfilename='backup')
self.assertEqual(True, compare_files(self, 'orig', 'backup'))
# Check that a URI doesn't exist, both the meta-data and the file names.
def confirmPathDoesNotExist(self, uri):
conn = self.wiredtiger_open(self.dir)
session = conn.open_session()
self.assertRaises(wiredtiger.WiredTigerError,
lambda: session.open_cursor(uri, None, None))
conn.close()
self.assertEqual(
glob.glob(self.dir + '*' + uri.split(":")[1] + '*'), [],
'confirmPathDoesNotExist: URI exists, file name matching \"' +
uri.split(":")[1] + '\" found')
# Backup a set of target tables using a backup cursor.
def backup_table_cursor(self, l):
# Create the backup directory.
os.mkdir(self.dir)
# Build the target list.
config = ""
if l:
config = 'target=('
for i in range(0, len(self.objs)):
if i in l:
config += '"' + self.objs[i][0] + '",'
config += ')'
# Open up the backup cursor, and copy the files.
cursor = self.session.open_cursor('backup:', None, config)
while True:
ret = cursor.next()
if ret != 0:
break
#print 'Copy from: ' + cursor.get_key() + ' to ' + self.dir
shutil.copy(cursor.get_key(), self.dir)
self.assertEqual(ret, wiredtiger.WT_NOTFOUND)
cursor.close()
# Confirm the objects we backed up exist, with correct contents.
for i in range(0, len(self.objs)):
if not l or i in l:
self.compare(self.objs[i][0])
# Confirm the other objects don't exist.
if l:
for i in range(0, len(self.objs)):
if i not in l:
self.confirmPathDoesNotExist(self.objs[i][0])
# Test backup with targets.
def test_backup_target(self):
self.populate()
self.backup_table_cursor(self.list)
if __name__ == '__main__':
wttest.run()
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