🚀 Wave 127 Phase 2: Protocol Translation + E2E Infrastructure (Agents 168-172)
## Summary
Major architectural fixes enabling E2E testing through protocol translation layer
and complete infrastructure resolution. Trading Service confirmed 100% implemented.
## Agents 168-172 Achievements
**Agent 168** - Port Configuration Fix:
- Fixed 3-layer port mismatch (tests→API Gateway→backends)
- Test files: localhost:50051 → localhost:50050
- Result: Infrastructure 100% correct, E2E testing unblocked
**Agent 169** - Root Cause Discovery:
- Confirmed Trading Service 100% implemented (all 11 methods exist)
- Identified protocol mismatch as root cause (TLI↔Trading proto)
- Documented all method implementations and field mappings
**Agent 170** - Protocol Translation Implementation:
- Implemented TLI↔Trading proto translation layer (+227 lines)
- Phase 2: 5 core methods (submit_order, cancel_order, get_order_status, get_account_info, get_positions)
- Phase 4: 2 streaming methods (subscribe_market_data, subscribe_order_updates)
- Dual proto compilation setup in build.rs
**Agent 171** - Backend Port Fix:
- Fixed API Gateway backend URLs (50051→50052, 50052→50053)
- Discovered authentication forwarding blocker
- Validated port connectivity working
**Agent 172** - Authentication Forwarding:
- Implemented auth metadata forwarding for all 7 translated methods
- Fixed gRPC Request ownership patterns (metadata clone before into_inner)
- Updated E2E test JWT secret for compliance (88-char base64)
## Files Modified
### API Gateway
- `services/api_gateway/build.rs`: Dual proto compilation
- `services/api_gateway/src/grpc/trading_proxy.rs`: +227 lines (translation + auth)
- `services/api_gateway/src/main.rs`: Port configuration
- `services/api_gateway/src/auth/interceptor.rs`: JWT validation
- `services/api_gateway/src/grpc/backtesting_proxy.rs`: Port updates
### Integration Tests
- `services/integration_tests/tests/trading_service_e2e.rs`: Port + JWT fixes
- `services/integration_tests/tests/backtesting_service_e2e.rs`: Port fixes
- `services/integration_tests/tests/ml_training_service_e2e.rs`: Port fixes
### Other Services
- `services/backtesting_service/src/main.rs`: Port configuration
- Multiple test files: Compliance, risk, pipeline tests
## Test Status
- E2E baseline: 6/54 (11.1%)
- Infrastructure: 100% fixed
- Protocol translation: Implemented, validation pending JWT sync
- Expected after validation: 13/54 (24.1%) with 7 methods working
## Technical Achievements
- Protocol adapter pattern (TLI↔Trading proto)
- gRPC metadata forwarding (5 auth headers)
- Dual proto compilation architecture
- Stream translation with unfold pattern
- Zero-copy enum pass-through
## Remaining Work
- JWT secret synchronization (in progress)
- Agent 170 Phase 5: 15 extended methods
- ML Training Service startup
- Backtesting Service route implementation (9 methods)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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