mattyb149 commented on a change in pull request #3315: NIFI-5916 Added an
option to enable empty flowfiles to be sent if the…
URL: https://github.com/apache/nifi/pull/3315#discussion_r262095588
##########
File path:
nifi-nar-bundles/nifi-mongodb-bundle/nifi-mongodb-processors/src/main/java/org/apache/nifi/processors/mongodb/GetMongo.java
##########
@@ -228,12 +249,19 @@ public void onTrigger(final ProcessContext context,
final ProcessSession session
outgoingFlowFile =
session.putAllAttributes(outgoingFlowFile, attributes);
session.getProvenanceReporter().receive(outgoingFlowFile,
getURI(context));
session.transfer(outgoingFlowFile, REL_SUCCESS);
+ sent++;
}
}
if (input != null) {
session.transfer(input, REL_ORIGINAL);
}
+
+ if (sent == 0 && sendEmpty) {
+ FlowFile empty = session.create(input);
Review comment:
Still tracking down whether there's a bug or intended behavior, but if
`input == null` here it causes an NPE (looks like its due to changes in #2974
). Just to be safe it should probably check for null here and just call
`create()` instead. Would make a good unit test too (to show it works without
an incoming flow file).
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