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annotate roundup/test/mocknull.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 f2c31f5ec50b
children 617d85ce4ac3
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1
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2 class MockNull:
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3 def __init__(self, **kwargs):
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4 for key, value in kwargs.items():
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5 self.__dict__[key] = value
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6
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7 def __call__(self, *args, **kwargs): return MockNull()
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8 def __getattr__(self, name):
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9 # This allows assignments which assume all intermediate steps are Null
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10 # objects if they don't exist yet.
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11 #
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12 # For example (with just 'client' defined):
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13 #
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14 # client.db.config.TRACKER_WEB = 'BASE/'
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15 self.__dict__[name] = MockNull()
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16 return getattr(self, name)
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18 def __getitem__(self, key): return self
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19 def __bool__(self): return False
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20 # Python 2 compatibility:
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21 __nonzero__ = __bool__
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22 def __contains__(self, key): return False
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23 def __eq__(self, rhs): return False
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24 def __ne__(self, rhs): return False
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25 def __str__(self): return ''
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26 def __repr__(self): return '<MockNull 0x%x>'%id(self)
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27 def gettext(self, str): return str
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28 _ = gettext
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29 def get(self, name, default=None):
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30 try:
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31 return self.__dict__[name.lower()]
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32 except KeyError:
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33 return default
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