Potential KeyValueProcessor feature: tag_on_failure

[dapowers87]

When a kv operation causes a runtime exception to be thrown within the processor, the operation is safely aborted without crashing the processor, and the event is tagged with the provided value.

Default is keyvalueprocessor_failure

See: https://www.elastic.co/guide/en/logstash/current/plugins-filters-kv.html#plugins-filters-kv-tag_on_failure

[dlvenable]

This requires #629 first. And it is another good reason for us to include a tagging related feature.

[graytaylor0]

Relevant links for example of adding tags on json parse failure in the parse_json processor

• data-prepper/data-prepper-plugins/parse-json-processor/src/main/java/org/opensearch/dataprepper/plugins/processor/parsejson/ParseJsonProcessor.java

  Line 56 in 3d8d01b

  tagsOnFailure = parseJsonProcessorConfig.getTagsOnFailure();

• data-prepper/data-prepper-plugins/parse-json-processor/src/main/java/org/opensearch/dataprepper/plugins/processor/parsejson/ParseJsonProcessor.java

  Line 92 in 3d8d01b

  event.getMetadata().addTags(tagsOnFailure);