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annotate roundup/cgi/engine_chameleon.py @ 6610:db3f0ba75b4a

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Change checkpoint_data and restore_connection_on_error to subtransaction checkpoint_data and restore_connection_on_error used to commit() and rollback() the db connection. This causes additional I/O and load. Changed them to use 'SAVEPOINT name' and 'ROLLBACK TO name' to get a faster method for handling errors within a tranaction. One thing to note is that postgresql (unlike SQL std) doesn't overwrite an older savepoint with he same name. It keeps all savepoints but only rolls back to the newest one with a given name. This could be a resource issue. I left a commented out release statement in case somebody runs into an issue due to too many savepoints. I expect it to slow down the import but....
author John Rouillard <rouilj@ieee.org>
date Sat, 29 Jan 2022 11:29:36 -0500
parents 4d20d8251bf2
children b8e63e65d9a8
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1 """Templating engine adapter for the Chameleon."""
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3 __docformat__ = 'restructuredtext'
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5 import chameleon
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7 from roundup.cgi.templating import context, TALLoaderBase
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8 from roundup.anypy.strings import s2u
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11 class Loader(TALLoaderBase):
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12 def __init__(self, dir):
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13 self.dir = dir
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14 self.loader = chameleon.PageTemplateLoader(dir)
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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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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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25 def render(self, client, classname, request, **options):
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26 c = context(client, self, classname, request)
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27 c.update({'options': options})
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29 def translate(msgid, domain=None, mapping=None, default=None):
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30 result = client.translator.translate(domain, msgid,
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31 mapping=mapping,
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32 default=default)
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33 return s2u(result)
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35 output = self._pt.render(None, translate, **c)
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36 return output.encode(client.charset)
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38 def __getitem__(self, name):
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39 return self._pt[name]
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41 def __getattr__(self, name):
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42 return getattr(self._pt, name)
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