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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 wiredtiger import stat
from wtdataset import SimpleDataSet, simple_key
from wtscenario import make_scenarios
# test_stat01.py
# Statistics operations
class test_stat01(wttest.WiredTigerTestCase):
"""
Test statistics
"""
config = 'internal_page_max=4K,leaf_page_max=8K'
nentries = 25
types = [
('file', dict(uri='file:test_stat01.wt')),
('table', dict(uri='table:test_stat01.wt'))
]
keyfmt = [
('column', dict(keyfmt='r', valfmt='S')),
('column-fix', dict(keyfmt='r', valfmt='8t')),
('string-row', dict(keyfmt='S', valfmt='S')),
]
scenarios = make_scenarios(types, keyfmt)
conn_config = 'statistics=(all)'
def statstr_to_int(self, str):
"""
Convert a statistics value string, which may be in either form:
'12345' or '33M (33604836)'
"""
parts = str.rpartition('(')
return int(parts[2].rstrip(')'))
# Do a quick check of the entries in the stats cursor, the "lookfor"
# string should appear with a minimum value of least "min".
def check_stats(self, statcursor, min, lookfor):
stringclass = ''.__class__
intclass = (0).__class__
# Reset the cursor, we're called multiple times.
statcursor.reset()
found = False
foundval = 0
for id, desc, valstr, val in statcursor:
self.assertEqual(type(desc), stringclass)
self.assertEqual(type(valstr), stringclass)
self.assertEqual(type(val), intclass)
self.assertEqual(val, self.statstr_to_int(valstr))
self.printVerbose(2, ' stat: \'' + desc + '\', \'' +
valstr + '\', ' + str(val))
if desc == lookfor:
found = True
foundval = val
self.assertTrue(found, 'in stats, did not see: ' + lookfor)
self.assertTrue(foundval >= min)
# Test simple connection statistics.
def test_basic_conn_stats(self):
# Build an object and force some writes.
ds = SimpleDataSet(self, self.uri, 1000,
config=self.config, key_format=self.keyfmt, value_format = self.valfmt)
ds.populate()
self.session.checkpoint(None)
# See that we can get a specific stat value by its key and verify its
# entry is self-consistent.
allstat_cursor = self.session.open_cursor('statistics:', None, None)
self.check_stats(allstat_cursor, 10, 'block-manager: blocks written')
values = allstat_cursor[stat.conn.block_write]
self.assertEqual(values[0], 'block-manager: blocks written')
val = self.statstr_to_int(values[1])
self.assertEqual(val, values[2])
allstat_cursor.close()
# Test simple object statistics.
def test_basic_data_source_stats(self):
# Build an object.
config = self.config + ',key_format=' + self.keyfmt + \
',value_format=S'
self.session.create(self.uri, config)
cursor = self.session.open_cursor(self.uri, None, None)
value = ""
for i in range(1, self.nentries):
value = value + 1000 * "a"
cursor[simple_key(cursor, i)] = value
cursor.close()
# Force the object to disk, otherwise we can't check the overflow count.
self.reopen_conn()
# See that we can get a specific stat value by its key and verify its
# entry is self-consistent.
cursor = self.session.open_cursor('statistics:' + self.uri, None, None)
self.check_stats(cursor, 8192, 'btree: maximum leaf page size')
self.check_stats(cursor, 4096, 'btree: maximum internal page size')
self.check_stats(cursor, 10, 'btree: overflow pages')
values = cursor[stat.dsrc.btree_overflow]
self.assertEqual(values[0], 'btree: overflow pages')
val = self.statstr_to_int(values[1])
self.assertEqual(val, values[2])
cursor.close()
cursor = self.session.open_cursor(
'statistics:' + self.uri, None, "statistics=(size)")
values = cursor[stat.dsrc.block_size]
self.assertNotEqual(values[2], 0)
cursor.close()
# Test simple per-checkpoint statistics.
def test_checkpoint_stats(self):
ds = SimpleDataSet(self, self.uri, self.nentries,
config=self.config, key_format=self.keyfmt)
for name in ('first', 'second', 'third'):
ds.populate()
self.session.checkpoint('name=' + name)
cursor = self.session.open_cursor(
'statistics:' + self.uri, None, 'checkpoint=' + name)
self.assertEqual(
cursor[stat.dsrc.btree_entries][2], self.nentries)
cursor.close()
def test_missing_file_stats(self):
self.assertRaises(wiredtiger.WiredTigerError, lambda:
self.session.open_cursor('statistics:file:DoesNotExist'))
if __name__ == '__main__':
wttest.run()
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