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NIFI-5551: If session.get() returns null, then return fron onTrigger instead of assuming that the FlowFile is non-null

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Signed-off-by: Pierre Villard <pierre.villard.fr@gmail.com>

This closes #2964.
This commit is contained in:
Mark Payne 2018-08-24 09:55:15 -04:00 committed by Pierre Villard
parent 8c0705cb6b
commit 6ceee25859
1 changed files with 4 additions and 0 deletions
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4
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UpdateCounter.java
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@ -100,6 +100,10 @@ public class UpdateCounter extends AbstractProcessor {
@Override
public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
FlowFile flowFile = session.get();
if (flowFile == null) {
return;
}
session.adjustCounter(context.getProperty(COUNTER_NAME).evaluateAttributeExpressions(flowFile).getValue(),
Long.parseLong(context.getProperty(DELTA).evaluateAttributeExpressions(flowFile).getValue()),
false