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#!/usr/bin/env python
#
# Public Domain 2008-2013 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 helper, wiredtiger, wttest
from wiredtiger import stat
# test_stat01.py
# Statistics operations
class test_stat01(wttest.WiredTigerTestCase):
"""
Test statistics
"""
tablename = 'test_stat01.wt'
uri = 'file:' + tablename
config = 'key_format=S,' +\
'allocation_size=512,internal_page_max=16K,leaf_page_max=128K'
nentries = 25
# Override WiredTigerTestCase, we have extensions.
def setUpConnectionOpen(self, dir):
conn = wiredtiger.wiredtiger_open(dir,
'create,statistics=(fast),' +
'error_prefix="%s: "' % self.shortid())
return conn
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(')'))
def check_stats(self, statcursor, mincount, lookfor):
"""
Do a quick check of the entries in the the stats cursor,
There should be at least 'mincount' entries,
and the 'lookfor' string should appear
"""
stringclass = ''.__class__
intclass = (0).__class__
# make sure statistics basically look right
count = 0
found = False
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))
count += 1
if desc == lookfor:
found = True
self.assertTrue(count > mincount)
self.assertTrue(found, 'in stats, did not see: ' + lookfor)
def test_basic_conn_stats(self):
self.printVerbose(2, 'overall database stats:')
allstat_cursor = self.session.open_cursor('statistics:', None, None)
self.check_stats(allstat_cursor, 10, 'block manager: blocks written')
# See that we can get a specific stat value by its key,
# and verify that its entry is self-consistent
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()
def test_basic_data_source_stats(self):
self.session.create(self.uri, self.config)
cursor = self.session.open_cursor(self.uri, None, None)
value = ""
for i in range(0, self.nentries):
key = str(i)
value = value + key + value # size grows exponentially
cursor.set_key(key)
cursor.set_value(value)
cursor.insert()
cursor.close()
self.printVerbose(2, 'data source specific stats:')
cursor = self.session.open_cursor(
'statistics:' + self.uri, None, None)
self.check_stats(cursor, 10, 'overflow pages')
# See that we can get a specific stat value by its key,
# and verify that its entry is self-consistent
values = cursor[stat.dsrc.btree_overflow]
self.assertEqual(values[0], 'overflow pages')
val = self.statstr_to_int(values[1])
self.assertEqual(val, values[2])
cursor.close()
def test_missing_file_stats(self):
self.assertRaises(wiredtiger.WiredTigerError, lambda:
self.session.open_cursor('statistics:file:DoesNotExist'))
def test_checkpoint_stats(self):
nentries = 0
last_size = 0
for name in ('first', 'second', 'third'):
helper.simple_populate(self, self.uri, self.config, nentries)
nentries += self.nentries
self.session.checkpoint('name=' + name)
cursor = self.session.open_cursor(
'statistics:' + self.uri, None, 'checkpoint=' + name)
size = cursor[stat.dsrc.btree_overflow][1]
self.assertTrue(size >= last_size)
last_size = size
cursor.close()
self.session.truncate(self.uri, None, None)
if __name__ == '__main__':
wttest.run()
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