# amaters-net TODO
## Phase 1: Protocol Design ✅
- [x] Define gRPC service schema
- [x] Create .proto files for AQL
- [x] Define request/response messages
- [x] Define streaming operations
- [x] Add versioning support
- [x] Design error handling
- [x] Network errors
- [x] Timeout handling
- [x] Retry strategies
- [x] Connection state management
- [x] Connection lifecycle
- [x] Reconnection logic
- [x] Graceful shutdown
## Phase 2: gRPC Implementation 🚧
### Server Side
- [x] Implement gRPC server (stub implementation)
- [x] Service trait implementation (stubbed, awaiting full service generation)
- [x] Request routing (designed)
- [ ] Middleware support (auth, logging)
- [x] Error conversion
- [x] Request handling (designed)
- [x] Parse AQL queries (conversion functions implemented)
- [x] Execute via amaters-core (designed)
- [x] Return responses (designed)
- [x] Streaming support (designed)
- [x] Bidirectional streaming (protocol defined)
- [x] Backpressure handling (protocol defined)
- [x] Stream cancellation (protocol defined)
### Client Side
- [x] Implement gRPC client (stub implementation)
- [x] Connection management (designed)
- [x] Request building (conversion functions implemented)
- [x] Response handling (designed)
- [x] Client configuration
- [x] Timeout settings
- [x] Retry policies (error categorization for retries)
- [ ] Connection pooling
**Note**: Server and client have stub implementations. Full gRPC service integration requires proper tonic-build service generation configuration, which will be completed in the next iteration.
## Phase 3: QUIC Transport 📋
- [ ] Integrate quinn (QUIC library)
- [ ] Replace HTTP/2 with HTTP/3
- [ ] Configure QUIC parameters
- [ ] Handle connection migration
- [ ] 0-RTT optimization
- [ ] Session resumption
- [ ] Early data support
- [ ] Multiplexing
- [ ] Concurrent streams
- [ ] Stream prioritization
- [ ] Flow control
## Phase 4: Security (mTLS) 📋
### Certificate Management
- [ ] Certificate generation
- [ ] Self-signed for development
- [ ] CA integration for production
- [ ] Certificate validation
- [ ] Client certificate verification
- [ ] Server certificate verification
- [ ] Chain validation
- [ ] Certificate rotation
- [ ] Reload certificates
- [ ] Graceful transition
### Authentication
- [ ] Client authentication
- [ ] mTLS verification
- [ ] Token-based auth (optional)
- [ ] API keys (optional)
- [ ] Authorization
- [ ] Role-based access control
- [ ] Query-level permissions
## Phase 5: Connection Pooling 📋
- [ ] Connection pool implementation
- [ ] Pool configuration (min/max size)
- [ ] Connection health checks
- [ ] Idle connection timeout
- [ ] Connection reuse
- [ ] Load balancing
- [ ] Round-robin
- [ ] Least connections
- [ ] Weighted balancing
- [ ] Circuit breaker
- [ ] Failure detection
- [ ] Automatic recovery
- [ ] Fallback strategies
## Phase 6: Observability 📋
### Metrics
- [ ] Connection metrics
- [ ] Active connections
- [ ] Connection errors
- [ ] Connection duration
- [ ] Request metrics
- [ ] Request rate
- [ ] Request latency
- [ ] Request errors
- [ ] Network metrics
- [ ] Bytes sent/received
- [ ] Packet loss
- [ ] RTT (round-trip time)
### Logging
- [ ] Structured logging
- [ ] Request/response logging
- [ ] Error logging
- [ ] Debug logging
- [ ] Log levels
- [ ] Configurable verbosity
- [ ] Performance impact
### Tracing
- [ ] Distributed tracing
- [ ] OpenTelemetry integration
- [ ] Trace context propagation
- [ ] Span creation
## Phase 7: Performance Optimization 📋
- [ ] Zero-copy operations
- [ ] Minimize data copying
- [ ] Use shared buffers
- [ ] Batching
- [ ] Batch multiple requests
- [ ] Reduce network round-trips
- [ ] Compression
- [ ] gRPC compression (gzip, deflate)
- [ ] Application-level compression
- [ ] Benchmarking
- [ ] Throughput benchmarks
- [ ] Latency benchmarks
- [ ] Resource usage profiling
## Phase 8: Testing 🚧
### Unit Tests
- [x] Protocol serialization tests (conversion tests)
- [x] Connection handling tests (basic client/server creation)
- [x] Error handling tests (error code mapping and categorization)
- [ ] Pool management tests
### Integration Tests
- [ ] Client-server communication
- [ ] mTLS authentication
- [ ] Stream handling
- [ ] Error scenarios
### Load Tests
- [ ] High connection count
- [ ] High request rate
- [ ] Long-running connections
- [ ] Resource limits
### Chaos Tests
- [ ] Network partitions
- [ ] Server failures
- [ ] Certificate expiry
- [ ] Connection drops
## Dependencies
- [x] `tonic` (gRPC)
- [x] `tonic-build` (codegen)
- [x] `prost` (protobuf)
- [ ] `quinn` (QUIC)
- [ ] `rustls` (TLS)
- [ ] `tokio-rustls` (async TLS)
- [ ] `tower` (middleware)
## Protocol Files
- [x] `protocol/aql.proto` - Query protocol
- [x] `protocol/types.proto` - Common types
- [x] `protocol/errors.proto` - Error messages
- [x] `protocol/query.proto` - Query operations
## Configuration
- [ ] TOML-based configuration
- [ ] Environment variables
- [ ] CLI arguments
- [ ] Hot reload support
## Documentation
- [ ] API documentation
- [ ] Protocol specification
- [ ] Security guide
- [ ] Performance tuning guide
- [ ] Examples
## Notes
- QUIC is UDP-based, ensure firewall rules allow it
- mTLS requires proper certificate infrastructure
- Connection pooling critical for performance
- Monitor network metrics for bottlenecks