Vijendra Kulhade created NIFI-7676:
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Summary: Nifi Processor dynamicallyModifiesClasspath doesn't work
Key: NIFI-7676
URL: https://issues.apache.org/jira/browse/NIFI-7676
Project: Apache NiFi
Issue Type: Bug
Components: Configuration
Affects Versions: 1.11.4
Reporter: Vijendra Kulhade
I am trying to pass custom jar to add in the class path for my Custom Processor.
I have used below PropertyDescriptor
{code:java}
static final PropertyDescriptor ADDITIONAL_CLASSPATH_RESOURCES = new
PropertyDescriptor.Builder()
.name("Additional Classpath Resources")
.displayName("Additional Classpath")
.description("A comma-separated list of paths to files and/or
directories that will be added to the classpath and used for loading native
libraries. " +
"When specifying a directory, all files with in the directory
will be added to the classpath, but further sub-directories will not be
included.")
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.dynamicallyModifiesClasspath(true)
.expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
.build();
{code}
Also in onTrigger trying to read get the Class like this.
{code:java}
Class<?> cls =
Thread.currentThread().getContextClassLoader().loadClass("CustomerProto");
Method m = cls.getDeclaredMethod("getDefaultInstance");{code}
I am getting ClassNotFoundException.
I tried referring the existing Nifi JoltTransformRecord Processor.
[https://github.com/apache/nifi/blob/main/nifi-nar-bundles/nifi-jolt-record-bundle/nifi-jolt-record-processors/src/main/java/org/apache/nifi/processors/jolt/record/JoltTransformRecord.java#L156]
Tried checking the test cases for this processor
I found that there was no positive test case for dynamicallyModifiesClasspath.
All the test cases are ignoring the custom class.
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