view test/test_token.py @ 6565:2c2dbfc332ba

Try to handle multiple connections better. The session database is a hot spot. When multiple requests (e.g. 20) come in at the same time session database contention can get great. The original code didn't retry session database access when the open failed. This resulted in errors at the client. The second pass delayed 0.01 seconds and retried. It was better but we still had multiple second stalls. I think the first request got in, everybody else backed up and then retried at the same time. Again they stepped on each other. With logging I would see many counters go all the way to low single digits or to -1 indicating falure. This pass uses randomint to generate delays from 0-.125 seconds in 5ms increments. This performs better in testing. I rarely saw a counter less than 13 (2 failed retries). Current logging starts after 6 failures and counts down until success or failure.
author John Rouillard <rouilj@ieee.org>
date Thu, 16 Dec 2021 20:02:00 -0500
parents 364c54991861
children 6971c9249c6d
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#
# Copyright (c) 2001 Richard Jones
# This module is free software, and you may redistribute it and/or modify
# under the same terms as Python, so long as this copyright message and
# disclaimer are retained in their original form.
#
# This module is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

import unittest, time

from roundup.token import token_split

class TokenTestCase(unittest.TestCase):
    def testValid(self):
        l = token_split('hello world')
        self.assertEqual(l, ['hello', 'world'])

    def testIgnoreExtraSpace(self):
        l = token_split('hello  world ')
        self.assertEqual(l, ['hello', 'world'])

    def testQuoting(self):
        l = token_split('"hello world"')
        self.assertEqual(l, ['hello world'])
        l = token_split("'hello world'")
        self.assertEqual(l, ['hello world'])

    def testEmbedQuote(self):
        l = token_split(r'Roch\'e Compaan')
        self.assertEqual(l, ["Roch'e", "Compaan"])
        l = token_split('address="1 2 3"')
        self.assertEqual(l, ['address=1 2 3'])

    def testEscaping(self):
        l = token_split('"Roch\'e" Compaan')
        self.assertEqual(l, ["Roch'e", "Compaan"])
        l = token_split(r'hello\ world')
        self.assertEqual(l, ['hello world'])
        l = token_split(r'\\')
        self.assertEqual(l, ['\\'])
        l = token_split(r'\n')
        self.assertEqual(l, ['\n'])

    def testBadQuote(self):
        self.assertRaises(ValueError, token_split, '"hello world')
        self.assertRaises(ValueError, token_split, "Roch'e Compaan")

# vim: set filetype=python ts=4 sw=4 et si

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