Mercurial > p > roundup > code
annotate roundup/cgi/engine_chameleon.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 | 4d20d8251bf2 |
| children | b8e63e65d9a8 |
| rev | line source |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
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1 """Templating engine adapter for the Chameleon.""" |
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2 |
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New Chameleon templating engine, engine is now configurable.
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3 __docformat__ = 'restructuredtext' |
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4 |
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API break: rename Templates to Loader for zopetal and chameleon
anatoly techtonik <techtonik@gmail.com>
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5 import chameleon |
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6 |
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Python 3 preparation: StringIO.
Joseph Myers <jsm@polyomino.org.uk>
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7 from roundup.cgi.templating import context, TALLoaderBase |
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Python 3 preparation: unicode.
Joseph Myers <jsm@polyomino.org.uk>
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8 from roundup.anypy.strings import s2u |
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9 |
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flake8 whitespace; removed unused import os.path.
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10 |
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templating: Move common TAL methods to TALLoaderBase class
anatoly techtonik <techtonik@gmail.com>
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11 class Loader(TALLoaderBase): |
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parents:
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12 def __init__(self, dir): |
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13 self.dir = dir |
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anatoly techtonik <techtonik@gmail.com>
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14 self.loader = chameleon.PageTemplateLoader(dir) |
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15 |
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Untangle template selection logic from template loading functionality.
anatoly techtonik <techtonik@gmail.com>
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16 def load(self, tplname): |
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17 src, filename = self._find(tplname) |
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18 return RoundupPageTemplate(self.loader.load(src)) |
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19 |
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John Rouillard <rouilj@ieee.org>
parents:
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20 |
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Fixes for RoundupPageTemplate in engine_chameleon.py.
Cheer Xiao <xiaqqaix@gmail.com>
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21 class RoundupPageTemplate(object): |
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22 def __init__(self, pt): |
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23 self._pt = pt |
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parents:
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24 |
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parents:
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25 def render(self, client, classname, request, **options): |
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parents:
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26 c = context(client, self, classname, request) |
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parents:
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27 c.update({'options': options}) |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
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28 |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
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29 def translate(msgid, domain=None, mapping=None, default=None): |
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parents:
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30 result = client.translator.translate(domain, msgid, |
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John Rouillard <rouilj@ieee.org>
parents:
5418
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31 mapping=mapping, |
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4d20d8251bf2
flake8 whitespace; removed unused import os.path.
John Rouillard <rouilj@ieee.org>
parents:
5418
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32 default=default) |
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5416
56c9bcdea47f
Python 3 preparation: unicode.
Joseph Myers <jsm@polyomino.org.uk>
parents:
4749
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33 return s2u(result) |
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New Chameleon templating engine, engine is now configurable.
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parents:
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34 |
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4635
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Fixes for RoundupPageTemplate in engine_chameleon.py.
Cheer Xiao <xiaqqaix@gmail.com>
parents:
4587
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35 output = self._pt.render(None, translate, **c) |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
diff
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36 return output.encode(client.charset) |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
diff
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37 |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
diff
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38 def __getitem__(self, name): |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
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39 return self._pt[name] |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
diff
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40 |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
diff
changeset
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41 def __getattr__(self, name): |
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New Chameleon templating engine, engine is now configurable.
Ralf Schlatterbeck <rsc@runtux.com>
parents:
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42 return getattr(self._pt, name) |
