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From "Graham Dumpleton (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MODPYTHON-113) PythonImport should use apache.import_module() and not PyImport_ImportModule().
Date Fri, 17 Mar 2006 04:17:07 GMT
     [ http://issues.apache.org/jira/browse/MODPYTHON-113?page=all ]
     
Graham Dumpleton resolved MODPYTHON-113:
----------------------------------------

    Fix Version: 3.3
     Resolution: Fixed

> PythonImport should use apache.import_module() and not PyImport_ImportModule().
> -------------------------------------------------------------------------------
>
>          Key: MODPYTHON-113
>          URL: http://issues.apache.org/jira/browse/MODPYTHON-113
>      Project: mod_python
>         Type: Bug
>   Components: core
>     Versions: 3.1.4, 3.2.7
>     Reporter: Graham Dumpleton
>     Assignee: Graham Dumpleton
>      Fix For: 3.3
>  Attachments: MP113_20060316_grahamd_1.diff
>
> When the "PythonImport" directive is used, mod_python uses the "PyImport_ImportModule()"
function to import the specified module. If that same module is later imported using the "apache.import_module()"
function, it will be reloaded a second time even though the Python module file hadn't changed
and even if "PythonAutoReload" is set to "Off".
> This reloading can cause problems if the module when loaded using PythonImport had setup
resources such as database connections etc. This is because "apache.import_module()" will
effectively throw away the existing values
> and replace them. This can be an issue if the resources aren't deleted properly and hold
open stuff like socket connections with those connections no longer being accessible or useable.
> The basic problem here is the mixing of standard Python import mechanism and any system
implemented by mod_python. The best solution now and in the future, would be for the "PythonImport"
directive to use the "apache.import_module()" function to import any modules. That way it
would be ensured they always work together properly and not against each other.
> Note that this problem was previously catalogued as ISSUE 17 on my list of mod_python
module importing problems. This list of problems can be found at:
>   http://www.dscpl.com.au/articles/modpython-003.html

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