Avro validation returns 204 and produces blank message

[vordimous]

Describe the bug
JSON to Avro over HTTP is not behaving as expected:

• Validation failures produce blank message
• Validation failure only logs one missing attribute
• Partial valid message logs unhelpful error "Expected string. Got END_OBJECT"

To Reproduce
sse avro example.zip

Steps to reproduce the behavior:

• start example

  ./startup.sh
  

• start stream

  curl --location --request GET 'http://localhost:7114/sse/stream' -v \
  --header 'Content-Type: text/plain' \
  --data '["NjNiNTU5Y2MtMjJhMC00YzMwLTgzOGMtZWE4OTZhOTBlMTQx","AQIABA=="]'
  

• send good payload

  curl --location 'http://localhost:7114/sse/events' -v \
  --header 'Content-Type: application/json' \
  --data '{"id": "anID","status": "aStatus"}'
  

• everything works

• send bad payload

  curl --location 'http://localhost:7114/sse/events' -v \
  --header 'Content-Type: application/json' \
  --data '{"name": "a name"}'
  

  zilla-avro-sse.north_http_server [11/Jul/2024:15:00:56 +0000] BINDING_HTTP_REQUEST_ACCEPTED - POST http://localhost:7114/sse/events
  1720710056288:zilla-avro-sse south_kafka_client: Skipping invalid message on topic events-sse, partition 0, offset 2
  zilla-avro-sse.south_kafka_cache_server [11/Jul/2024:15:00:56 +0000] MODEL_AVRO_VALIDATION_FAILED A message payload failed validation. Expected field name not found: id
  zilla-avro-sse.south_kafka_client [11/Jul/2024:15:00:56 +0000] MODEL_AVRO_VALIDATION_FAILED A message payload failed validation.

• send partial good

  curl --location 'http://localhost:7114/sse/events' -v \
  --header 'Content-Type: application/json' \
  --data '{"id": "anID"}'
  

  zilla-avro-sse.north_http_server [11/Jul/2024:15:02:34 +0000] BINDING_HTTP_REQUEST_ACCEPTED - POST http://localhost:7114/sse/events
  zilla-avro-sse.south_kafka_cache_server [11/Jul/2024:15:02:34 +0000] MODEL_AVRO_VALIDATION_FAILED A message payload failed validation. Expected string. Got END_OBJECT
  1720710154266:zilla-avro-sse south_kafka_client: Skipping invalid message on topic events-sse, partition 0, offset 3
  zilla-avro-sse.south_kafka_client [11/Jul/2024:15:02:34 +0000] MODEL_AVRO_VALIDATION_FAILED A message payload failed validation.

Expected behavior
It should not produce a message on failure. Validation failures return accurate HTTP error codes with reason and log appropriate failure reason.

Zilla Environment:
sse avro.zip