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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
from wtscenario import make_scenarios
# test_alter03.py
# Check if app_metadata can be altered.
class test_alter03(wttest.WiredTigerTestCase):
name = "alter03"
def verify_metadata(self, table_metastr, lsm_metastr, file_metastr):
c = self.session.open_cursor('metadata:', None, None)
if table_metastr != '':
# We must find a table type entry for this object and its value
# should contain the provided table meta string.
c.set_key('table:' + self.name)
self.assertNotEqual(c.search(), wiredtiger.WT_NOTFOUND)
value = c.get_value()
self.assertTrue(value.find(table_metastr) != -1)
if lsm_metastr != '':
# We must find a lsm type entry for this object and its value
# should contain the provided lsm meta string.
c.set_key('lsm:' + self.name)
self.assertNotEqual(c.search(), wiredtiger.WT_NOTFOUND)
value = c.get_value()
self.assertTrue(value.find(lsm_metastr) != -1)
if file_metastr != '':
# We must find a file type entry for the object and its value
# should contain the provided file meta string.
c.set_key('file:' + self.name + '.wt')
self.assertNotEqual(c.search(), wiredtiger.WT_NOTFOUND)
value = c.get_value()
self.assertTrue(value.find(file_metastr) != -1)
c.close()
# Alter Table: Change the app_metadata and verify
def test_alter03_table_app_metadata(self):
uri = "table:" + self.name
entries = 100
create_params = 'key_format=i,value_format=i,'
app_meta_orig = 'app_metadata="meta_data_1",'
self.session.create(uri, create_params + app_meta_orig)
# Put some data in table.
c = self.session.open_cursor(uri, None)
for k in range(entries):
c[k+1] = 1
c.close()
# Verify the string in the metadata
self.verify_metadata(app_meta_orig, '', app_meta_orig)
# Alter app metadata and verify
self.session.alter(uri, 'app_metadata="meta_data_2",')
self.verify_metadata('app_metadata="meta_data_2",', '', 'app_metadata="meta_data_2",')
# Alter app metadata, explicitly asking for exclusive access and verify
self.session.alter(uri, 'app_metadata="meta_data_3",exclusive_refreshed=true,')
self.verify_metadata('app_metadata="meta_data_3",', '', 'app_metadata="meta_data_3",')
# Alter app metadata without taking exclusive lock and verify that only
# table object gets modified
self.session.alter(uri, 'app_metadata="meta_data_4",exclusive_refreshed=false,')
self.verify_metadata('app_metadata="meta_data_4",', '', 'app_metadata="meta_data_3",')
# Open a cursor, insert some data and try to alter with session open.
# We should fail unless we ask not to take an exclusive lock
c2 = self.session.open_cursor(uri, None)
for k in range(entries):
c2[k+1] = 2
self.assertRaisesException(wiredtiger.WiredTigerError,
lambda: self.session.alter(uri, 'app_metadata="meta_data_5",'))
self.verify_metadata('app_metadata="meta_data_4",', '', 'app_metadata="meta_data_3",')
self.assertRaisesException(wiredtiger.WiredTigerError,
lambda: self.session.alter(uri,
'exclusive_refreshed=true,app_metadata="meta_data_5",'))
self.verify_metadata('app_metadata="meta_data_4",', '', 'app_metadata="meta_data_3",')
self.session.alter(uri, 'app_metadata="meta_data_5",exclusive_refreshed=false,')
self.verify_metadata('app_metadata="meta_data_5",', '', 'app_metadata="meta_data_3",')
c2.close()
# Close and reopen the connection.
# Confirm we retain the app_metadata as expected after reopen
self.reopen_conn()
self.verify_metadata('app_metadata="meta_data_5",', '', 'app_metadata="meta_data_3",')
# Alter LSM: A non exclusive alter should not be allowed
def test_alter03_lsm_app_metadata(self):
uri = "lsm:" + self.name
create_params = 'key_format=i,value_format=i,'
app_meta_orig = 'app_metadata="meta_data_1",'
self.session.create(uri, create_params + app_meta_orig)
# Try to alter app metadata without exclusive access and verify
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: self.session.alter(uri,
'exclusive_refreshed=false,app_metadata="meta_data_2",'),
'/is applicable only on simple tables/')
self.verify_metadata('', 'app_metadata="meta_data_1",', '')
# Alter app metadata, explicitly asking for exclusive access and verify
self.session.alter(uri, 'exclusive_refreshed=true,app_metadata="meta_data_2",')
self.verify_metadata('', 'app_metadata="meta_data_2",', '')
# Alter app metadata and verify
self.session.alter(uri, 'app_metadata="meta_data_3",')
self.verify_metadata('', 'app_metadata="meta_data_3",', '')
if __name__ == '__main__':
wttest.run()
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