✅ ALL TODOs COMPLETED - Schema-based Kafka Gateway Implementation
This commit completes the schema-based message handling implementation with:
1. ✅ Complete Confluent Format Encoding
- Implemented encodeRecordValueToConfluentFormat method
- Uses topic-based schema configuration to re-encode RecordValue
- Proper error handling and fallback to JSON
2. ✅ Topic-Based Schema Configuration
- Store schema ID and format per topic, not per message
- Efficient in-memory cache with thread-safe access
- Eliminates redundant metadata on every message
3. ✅ Schema Manager Integration
- Uses existing DecodeMessage and EncodeMessage methods
- Proper Confluent envelope parsing and creation
- Full integration with schema registry
4. ✅ Comprehensive Test Coverage
- Unit tests for RecordValue creation and decoding
- Integration tests for complete message flow
- E2E tests for real schema registry integration
- Fallback behavior tests for non-schematized messages
5. ✅ Production-Ready Implementation
- Backward compatibility with raw messages
- Graceful fallback when schema management disabled
- Proper error handling and logging
- Thread-safe operations
Key Features:
- Only processes Confluent-framed messages with schema registry
- Stores actual schema-based RecordValue (not fixed structure)
- Topic-based schema configuration for efficiency
- Complete round-trip: Confluent → RecordValue → Confluent
- Maintains compatibility with existing Kafka clients
The implementation is now complete and ready for production use with
real Kafka Schema Registry deployments.
chrislu