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https://issues.apache.org/jira/browse/NIFI-8266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17297506#comment-17297506
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ASF subversion and git services commented on NIFI-8266:
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Commit 0965523bab370ae3f91c4ea94e7cf750b4601249 in nifi's branch
refs/heads/main from Matt Burgess
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=0965523 ]
NIFI-8266: Fix NPE when validating supported properties against validation
context
- Removed schema properties from FreeFormTextRecordSetWriter causing validation
issues
This closes #4851.
Signed-off-by: Mark Payne <[email protected]>
> InvokeScriptedProcessor can throw NPE during custom property validation
> -----------------------------------------------------------------------
>
> Key: NIFI-8266
> URL: https://issues.apache.org/jira/browse/NIFI-8266
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
> Priority: Major
> Fix For: 1.14.0, 1.13.1
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> If a script in InvokeScriptedProcessor (ISP) specifies additional properties
> to be added to the configuration dialog, a NullPointerException can occur
> during validation:
> This appears to be the result of the ValidationContext for the ISP being
> created before the script is loaded, and thus the properties are not present
> in the context during validation. However the list iterated over in
> AbstractConfigurableComponent.validate() is the list of supported property
> descriptors, which may or may not include the script's properties when
> validate() is called.
> The list to be iterated over should be the list of properties in the
> ValidationContext, to avoid an NPE. Having said that, for components that can
> provide properties dynamically (via script, e.g.) the ValidationContext
> should be recreated rather than reusing the first one created. This could be
> accomplished with a component annotation (ProvidesCustomProperties or
> something). If the annotation exists for the component, the ValidationContext
> should be recreated before validation; otherwise, the first one created
> should be retained for performance purposes.
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