dan-s1 commented on code in PR #11850:
URL: https://github.com/apache/nifi/pull/11850#discussion_r4418556742
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nifi-extension-bundles/nifi-jslt-bundle/nifi-jslt-processors/src/main/java/org/apache/nifi/processors/jslt/JSLTTransformJSON.java:
##########
@@ -476,14 +476,26 @@ private FlowFile transformJsonLines(final Expression
jsltExpression, final FlowF
try (final BufferedReader reader = new BufferedReader(new
InputStreamReader(inputStream, StandardCharsets.UTF_8));
final JsonGenerator jsonGenerator =
writer.createGenerator(outputStream)) {
String line;
+ int lines = 0;
+ int transforms = 0;
while ((line = reader.readLine()) != null) {
if (line.isBlank()) {
continue;
}
+ lines++;
final JsonNode jsonNode =
JSON_OBJECT_MAPPER.readTree(line);
final JsonNode transformedJson =
jsltExpression.apply(jsonNode);
- jsonGenerator.writeObject(transformedJson);
+ if (transformedJson == null || transformedJson.isNull()) {
+ getLogger().debug("JSLT Transform resulted in no data
on line {}", lines + 1);
Review Comment:
Why would it be off if `lines` is initialized with 0? The `info` log still
reports how many lines actually resulted in data. Certain lines may have not
resulted in data because they were blank and some because they did not meet the
JSLT filter.
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