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#!/usr/bin/env python
#
# Public Domain 2014-2019 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 sys, wiredtiger, wttest
from wtscenario import make_scenarios
# test_metadata03.py
# Test atomic schema operations on create.
class test_metadata03(wttest.WiredTigerTestCase):
conn_config = 'log=(enabled)'
types = [
('file', dict(uri='file:', use_cg=False, use_index=False)),
('lsm', dict(uri='lsm:', use_cg=False, use_index=False)),
('table-cg', dict(uri='table:', use_cg=True, use_index=False)),
('table-index', dict(uri='table:', use_cg=False, use_index=True)),
('table-simple', dict(uri='table:', use_cg=False, use_index=False)),
]
scenarios = make_scenarios(types)
# Count actual log records in the log. Log cursors walk the individual
# operations of a transaction as well as the entire record. Skip counting
# any individual commit operations and only count entire records.
def count_logrecs(self):
count = 0
c = self.session.open_cursor('log:', None, None)
while c.next() == 0:
# lsn.file, lsn.offset, opcount
keys = c.get_key()
# Only count whole records, which is when opcount is zero.
# If opcount is not zero it is an operation of a commit.
if keys[2] == 0:
count += 1
c.close()
return count
def verify_logrecs(self, origcnt):
#
# Walk through all the log and make sure that creating any table
# only writes two log records to the log. The two records are the
# commit entry itself and the sync record for the metadata file.
#
count = self.count_logrecs()
# To be re-enabled when WT-3965 is fixed.
#self.assertTrue(count == origcnt + 2)
# Test that creating and dropping tables does not write individual
# log records.
def test_metadata03_create(self):
uri = self.uri + 'table0'
create_params = 'key_format=i,value_format=S,'
cgparam = ''
if self.use_cg or self.use_index:
cgparam = 'columns=(k,v),'
if self.use_cg:
cgparam += 'colgroups=(g0),'
# Create main table.
origcnt = self.count_logrecs()
self.session.create(uri, create_params + cgparam)
self.verify_logrecs(origcnt)
# Add in column group or index tables.
if self.use_cg:
# Create.
cgparam = 'columns=(v),'
suburi = 'colgroup:table0:g0'
origcnt = self.count_logrecs()
self.session.create(suburi, cgparam)
self.verify_logrecs(origcnt)
if self.use_index:
# Create.
suburi = 'index:table0:i0'
origcnt = self.count_logrecs()
self.session.create(suburi, cgparam)
self.verify_logrecs(origcnt)
# Dropping the main table will also drop all index or column group tables.
origcnt = self.count_logrecs()
self.session.drop(uri)
self.verify_logrecs(origcnt)
if __name__ == '__main__':
wttest.run()
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