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https://issues.apache.org/jira/browse/MINIFICPP-2304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gábor Gyimesi reassigned MINIFICPP-2304:
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Assignee: Gábor Gyimesi
> Clean up Python processor initialization
> ----------------------------------------
>
> Key: MINIFICPP-2304
> URL: https://issues.apache.org/jira/browse/MINIFICPP-2304
> Project: Apache NiFi MiNiFi C++
> Issue Type: Improvement
> Reporter: Gábor Gyimesi
> Assignee: Gábor Gyimesi
> Priority: Major
>
> Python processor initialization should be refactored to be cleaner. We
> instantiate the Python processors twice:
> We instantiate the Python processors that are used in the configured MiNiFi
> flow. This is straightforward and not problematic.
> The problem is that before that we also instantiate all python processors in
> the PythonCreator::registerScriptDescription method for getting the class
> description for all available python processors for the agent manifest
> * In this scenario we call the Python processors' initialize method twice:
> ** Once the PythonObjectFactory::create method calls it to initialize the
> supported properties to set the ScriptFile property to the path of the Python
> processor
> ** After this the PythonCreator::registerScriptDescription also calls it
> explicitly to load the python processor from the set path
> ** This should be circumvented to not need double initialization and have a
> telling warning message in ExecutePythonProcessor::initialize() if the
> loadScript method fails
> * We should also find a way to avoid initializing all the Python processors
> and retrieve the processor data without it. With NiFi Python processors a way
> for this could be to use the "ast" python module to retrieve the processor
> details which does not require loading the python module
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