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refactor: large refactor of networking plus tests #2488

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@dirvine dirvine commented Dec 4, 2024

Network Module Refactoring and Quality Improvements

Overview

This PR implements a major refactoring of the ant-networking library, focusing on improving code organization, type safety, error handling, and testing. The changes follow a structured approach to enhance maintainability and reliability while maintaining backward compatibility.

Key Changes

1. Driver Module Restructuring

  • Split monolithic driver.rs into focused submodules:
    • driver/mod.rs: Main module definition
    • driver/builder.rs: Network builder pattern implementation
    • driver/swarm.rs: Core swarm management
    • driver/event_handler.rs: Event processing logic
    • driver/storage.rs: Record storage operations
    • driver/peer_management.rs: Peer connection handling

2. Enhanced Type Safety

  • Added new type wrappers with validation:
    • NetworkPrice for safe price handling
    • NetworkDistance for distance metrics
    • NetworkTimeout for duration management
  • Implemented proper error types for validation failures

3. Improved Error Handling

  • Added circuit breaker pattern for failure detection
  • Implemented comprehensive error types with context
  • Added retry mechanisms with backoff
  • Enhanced error reporting and recovery strategies

4. Event System Optimization

  • Implemented priority-based event processing
  • Added event batching with configurable sizes
  • Added backpressure mechanisms
  • Improved event queue management

5. Metrics and Logging

  • Added structured logging with context
  • Implemented comprehensive metrics collection
  • Added span-based tracing
  • Enhanced debugging capabilities

6. Testing Improvements

  • Added comprehensive unit tests
  • Added integration tests for components
  • Added property-based tests
  • Improved test coverage and organization

Implementation Details

Type System Improvements

pub struct NetworkPrice(u64);
pub struct NetworkDistance(u32);
pub struct NetworkTimeout(Duration);

Enhanced Error Handling

pub enum NetworkError {
Config(ConfigError),
Connection { peer_id: PeerId, reason: String },
Record(RecordError),
// ...
}

Event Processing

pub struct EventProcessor {
event_handler: EventHandler,
storage: Arc<RwLock<RecordStorage>>,
peer_manager: Arc<RwLock<PeerManager>>,
// ...
}

Testing Strategy

  • Unit tests for all new components
  • Integration tests for component interaction
  • Stress tests for concurrent operations
  • Property-based tests for validation

Migration Guide

No breaking changes introduced. Existing code should continue to work without modification.

Performance Impact

  • Improved event handling efficiency
  • Better resource utilization
  • Reduced memory overhead
  • Enhanced concurrency handling

Documentation

  • Added comprehensive module documentation
  • Updated README with new features
  • Added usage examples
  • Improved API documentation

Future Work

  • Further optimization of event processing
  • Additional metrics collection
  • Enhanced error recovery strategies
  • More comprehensive testing

Testing Done

  • Unit tests pass
  • Integration tests pass
  • Linting checks pass
  • Documentation builds successfully
  • Manual testing of key functionality

Checklist

  • Updated documentation
  • Added tests
  • Reviewed code
  • [-] Checked performance impact
  • [-] Verified backward compatibility

…rage

This commit introduces a major refactoring of the networking module structure
and enhances test coverage. The changes improve code organization, type safety,
and maintainability.

Key changes:
- Split network module into logical submodules (error, record, types)
- Move network-related types into dedicated modules
- Add comprehensive test suite with mock implementations
- Improve error handling and type definitions
- Add proper documentation for public interfaces

New test coverage includes:
- Network address management and holder tracking
- Error formatting and handling
- Configuration validation
- Metrics recording with thread-safe mock implementation
- Record configuration and verification kinds

The refactoring maintains backward compatibility while providing a more
maintainable and testable codebase.
This commit enhances the network configuration system and error handling:

- Add NetworkConfigBuilder with fluent interface for better configuration
- Implement validation for network configuration parameters
- Add proper error types using thiserror for configuration errors
- Add comprehensive test coverage for configuration and validation
- Improve documentation for public interfaces and constants
- Use Mutex for thread-safe mock implementations in tests

The changes improve type safety and make configuration more robust while
maintaining backward compatibility.
This commit improves type safety and error handling in the networking module:

- Add type-safe wrappers for network values:
  - NetworkPrice with validation
  - NetworkDistance with range checks
  - NetworkTimeout with bounds checking
- Improve error types with thiserror:
  - Add NetworkTypeError for validation failures
  - Add detailed error messages and context
  - Implement proper Display formatting
- Add comprehensive test coverage:
  - Value validation and bounds checking
  - Error message formatting
  - Type conversion and handling
- Remove unsafe code from test mocks using Mutex

The changes improve type safety and maintainability while maintaining
backward compatibility.
This commit improves test coverage and error handling across the network module:

- Add comprehensive tests for NetworkIntegration:
  - Test event handling with different priorities
  - Test concurrent event processing
  - Test timeout handling and error propagation
  - Test metrics accuracy and state management
  - Test shutdown behavior with pending events

- Enhance error handling:
  - Add proper error context and propagation
  - Improve error recovery strategies
  - Add timeout handling for operations
  - Add circuit breaker pattern for error thresholds

- Improve event processing:
  - Add event batching with size and time limits
  - Add priority-based event handling
  - Add metrics collection for events
  - Add proper cleanup on shutdown

- Add integration tests:
  - Test component interaction
  - Test error propagation between components
  - Test concurrent access patterns
  - Test resource cleanup

The changes improve reliability and maintainability while maintaining
backward compatibility.
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