Github user cestella commented on a diff in the pull request:
https://github.com/apache/metron/pull/621#discussion_r123512796
--- Diff:
metron-platform/metron-parsers/src/main/java/org/apache/metron/parsers/bolt/ParserBolt.java
---
@@ -129,18 +148,29 @@ public void execute(Tuple tuple) {
boolean ackTuple = !writer.handleAck();
int numWritten = 0;
if(sensorParserConfig != null) {
+ Map<String, Object> metadata = getMetadata(tuple,
sensorParserConfig.readMetadata());
List<FieldValidator> fieldValidations =
getConfigurations().getFieldValidations();
Optional<List<JSONObject>> messages =
parser.parseOptional(originalMessage);
for (JSONObject message :
messages.orElse(Collections.emptyList())) {
message.put(Constants.SENSOR_TYPE, getSensorType());
--- End diff --
* If you turn on parsing metadata and do not indicate to merge the
metadata, it will be available to stellar field transformations.
* If you turn on parsing metadata and *do* indicate that you wish to merge
the metadata, it will be both merged and available to stellar field
transformations.
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