Allow PythonImport to optionally call function in module.
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Key: MODPYTHON-118
URL: http://issues.apache.org/jira/browse/MODPYTHON-118
Project: mod_python
Type: Wish
Components: core
Versions: 3.3
Reporter: Graham Dumpleton
PythonImport can currently be used to specify that a module be imported into a
named interpreter at the time that an Apache child process is initiated.
Because all it does is import the module, if any specific action needs to be
triggered, it has to be done as a side effect of the module import.
Triggering actions as a side effect of a module import is generally not a good
idea as failure of the side effect action will cause the import of the module
itself to fail if the code doesn't properly handle this situation. It is
generally preferable to import the module and when that has suceeded only then
call a specific function contained in the module to initiate the action.
Thus proposed that PythonImport be able to take an optional function to be
called upon successful import of the name module. The syntax would be like that
for Python*Handler directives.
PythonImport mymodule::myfunc myinterpreter
This would have the effect of loading module "mymodule" in the interpreter
called "myinterpreter" and then calling "mymodule.myfunc()". No arguments would
be supplied to the function when called.
Another benefit of this feature would be that it would allow a single module to
be able to contain a number of special initialisation functions that might be
triggerable. The user could selectively call those that might be required.
PythonImport mymodule::enable_caching myinterpreter
PythonImport mymodule::disable_logging myinterpreter
At the moment to do that, a distinct module would need to be created for each
where the only thing in the module is the call of the function.
Note that in using something similar to mod_python option/config values, am
talking here about options that must be able to only be enabled/disable in one
spot. The problem with mod_python option/config values in Apache is that
different parts of the document tree can set them to different values, which
for some things is actually a problem, such as the case with PythonAutoReload.
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