#!/usr/bin/env python
#
# Public Domain 2014-2016 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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import itertools, wiredtiger, wttest
from suite_subprocess import suite_subprocess
from wtscenario import multiply_scenarios, number_scenarios
from wiredtiger import stat
from helper import complex_populate, complex_populate_lsm, simple_populate
from helper import complex_value_populate, key_populate, value_populate

# test_stat05.py
#    Statistics cursor using size only
class test_stat_cursor_config(wttest.WiredTigerTestCase):
    pfx = 'test_stat_cursor_size'
    conn_config = 'statistics=(fast)'

    uri = [
        ('file',  dict(uri='file:' + pfx, pop=simple_populate, cfg='')),
        ('table', dict(uri='table:' + pfx, pop=simple_populate, cfg='')),
        ('inmem', dict(uri='table:' + pfx, pop=simple_populate, cfg='',
            conn_config='in_memory,statistics=(fast)')),
        ('table-lsm', dict(uri='table:' + pfx, pop=simple_populate,
            cfg=',type=lsm,lsm=(chunk_size=1MB,merge_min=2)')),
        ('complex', dict(uri='table:' + pfx, pop=complex_populate, cfg='')),
        ('complex-lsm',
            dict(uri='table:' + pfx, pop=complex_populate_lsm,
            cfg=',lsm=(chunk_size=1MB,merge_min=2)')),
    ]

    scenarios = number_scenarios(uri)

    def openAndWalkStatCursor(self):
        c = self.session.open_cursor(
            'statistics:' + self.uri, None, 'statistics=(size)')
        count = 0
        while c.next() == 0:
            count += 1
        c.close()


    # Open a size-only statistics cursor on various table types. Ensure that
    # the cursor open succeeds. Insert enough data that LSM tables to need to
    # switch and merge.
    def test_stat_cursor_size(self):
        self.pop(self, self.uri, 'key_format=S' + self.cfg, 100)
        self.openAndWalkStatCursor()
        cursor = self.session.open_cursor(self.uri, None)
        for i in range(100, 40000 + 1):
            if i % 100 == 0:
                self.openAndWalkStatCursor()
            if self.pop == simple_populate:
                cursor[key_populate(cursor, i)] = value_populate(cursor, i)
            else:
                cursor[key_populate(cursor, i)] = \
                        tuple(complex_value_populate(cursor, i))
        cursor.close()
        self.openAndWalkStatCursor()

if __name__ == '__main__':
    wttest.run()