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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 os, struct
from suite_subprocess import suite_subprocess
from wtscenario import make_scenarios
import wiredtiger, wttest
from wiredtiger import stat
# test_stat04.py
# Statistics key/value pair count
class test_stat04(wttest.WiredTigerTestCase, suite_subprocess):
uripfx = 'table:test_stat04.'
# Note: stats for fixed length bit fields (valuefmt='8t')
# do not include accurate counts for kv pairs.
keyfmt = [
('col', dict(keyfmt='r', valuefmt='S', storekind='col')),
('row', dict(keyfmt='S', valuefmt='S', storekind='row')),
]
nentries = [
('small', dict(nentries=100, valuesize=50)),
('medium', dict(nentries=10000, valuesize=20)),
('large', dict(nentries=100000, valuesize=1)),
('jumboval', dict(nentries=100, valuesize=4200000)),
]
scenarios = make_scenarios(keyfmt, nentries)
conn_config = 'statistics=(all)'
def init_test(self):
self.valuepfx = self.valuesize * 'X'
def genkey(self, n):
if self.keyfmt == 'S':
return 'SOMEKEY' + str(n)
else:
return n + 1
def genvalue(self, n):
if self.valuefmt == 'S':
return self.valuepfx + str(n)
else:
return n & 0xff
def checkcount(self, uri, expectpairs):
statcursor = self.session.open_cursor(
'statistics:' + uri, None, 'statistics=(all,clear)')
self.assertEqual(statcursor[stat.dsrc.btree_entries][2], expectpairs)
statcursor.close()
def test_stat_nentries(self):
"""
Test to make sure the number of key/value pairs is accurate.
"""
self.init_test()
uri = self.uripfx + self.storekind + '.' + str(self.nentries)
self.session.create(uri, 'key_format=' + self.keyfmt +
',value_format=' + self.valuefmt)
cursor = self.session.open_cursor(uri, None, None)
count = 0
# Insert entries, periodically checking that stats match.
for i in range(0, self.nentries):
if count % 50 == 0:
self.checkcount(uri, count)
cursor[self.genkey(i)] = self.genvalue(i)
count += 1
# Remove a number of entries, at each step checking that stats match.
for i in range(0, self.nentries // 37):
cursor.set_key(self.genkey(i*11 % self.nentries))
if cursor.remove() == 0:
count -= 1
self.checkcount(uri, count)
cursor.close()
# Confirm the count is correct after writing to the backing file,
# that tests the on-disk format as well as the in-memory format.
self.reopen_conn()
self.checkcount(uri, count)
if __name__ == '__main__':
wttest.run()
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