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annotate roundup/exceptions.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 c177e7128dc9
children e16b7d47fdb2
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1 """Exceptions for use across all Roundup components.
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2 """
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3
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4 __docformat__ = 'restructuredtext'
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6
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7 class RoundupException(Exception):
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8 pass
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9
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10 class LoginError(RoundupException):
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11 pass
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12
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13
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14 class Unauthorised(RoundupException):
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15 pass
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16
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17 class RejectBase(RoundupException):
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18 pass
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19
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20 class Reject(RejectBase):
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21 """An auditor may raise this exception when the current create or set
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22 operation should be stopped.
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23
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24 It is up to the specific interface invoking the create or set to
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25 handle this exception sanely. For example:
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26
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27 - mailgw will trap and ignore Reject for file attachments and messages
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28 - cgi will trap and present the exception in a nice format
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29 """
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30 pass
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32
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33 class RejectRaw(Reject):
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34 """
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35 Performs the same function as Reject, except HTML in the message is not
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36 escaped when displayed to the user.
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37 """
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38 pass
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39
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40
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41 class UsageError(ValueError):
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42 pass
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43
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44 # vim: set filetype=python ts=4 sw=4 et si
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