Table of Contents

v1.1.6 "Shinpo" - Progress Enhancement

Release Date: July 22, 2025
Code Name: "Shinpo" (進歩 - Progress/Advancement)
Type: Minor Release

🎯 Overview

Version 1.1.6 enhances the JiroClientBase foundation with improved connection handling, thread safety, and enhanced logging capabilities. This release focuses on making client implementations more robust and production-ready with better error handling and connection lifecycle management.

✨ Features Added

  • Enhanced Connection Management: New InitializeAsync method with comprehensive connection setup and error handling
  • Thread-Safe Operations: Added SemaphoreSlim for connection synchronization to prevent race conditions
  • Improved RPC Handling: Streamlined server-to-client RPC calls with better request/response tracking
  • Enhanced Logging: Request/response correlation with RequestId tracking for better observability
  • Flexible Constructor: Constructor now accepts optional HubConnection for more flexible initialization patterns
  • Abstract Handler Setup: New SetupHandlers() abstract method enforces proper handler implementation

🔄 Changes

Connection Lifecycle Improvements

  • Initialization Method: New InitializeAsync() with parameters for hub URL, API key, and exception handling
  • Connection State Management: Automatic detection and handling of existing connections before re-initialization
  • API Key Validation: Built-in validation ensures proper authentication configuration
  • Graceful Reconnection: Improved reconnection handling with proper state management

Enhanced Event System

  • RPC Method Signatures: Simplified RPC event signatures removing unnecessary Task<> wrapper for direct return types
  • Request Correlation: All RPC calls now log with RequestId for better traceability
  • Null-Safe Event Handling: Improved null checking for event handlers
  • Structured Logging: Enhanced logging format with request/response correlation

Code Quality Improvements

  • Thread Safety: Connection operations protected by semaphore
  • Error Handling: Comprehensive exception handling in connection methods
  • Documentation: Enhanced XML documentation for all public methods
  • Validation: Input validation for critical parameters like API keys

🐛 Bug Fixes

  • Race Conditions: Fixed potential race conditions during connection initialization
  • Event Registration: Resolved timing issues with event setup during connection lifecycle
  • Memory Leaks: Improved disposal patterns for connection resources

🛠️ Technical Details

Breaking Changes

  • SetupHandlers(): Now abstract method - derived classes must implement this method
  • Constructor Changes: HubConnection parameter is now optional (nullable)

Non-Breaking Changes

  • All existing IJiroClient interface methods remain unchanged
  • Existing event signatures are backward compatible
  • Legacy initialization patterns continue to work

Performance Improvements

  • Reduced memory allocations in event handling
  • Optimized logging with null-checked conditional execution
  • Improved connection pooling with semaphore-based synchronization

💻 Usage Example

// Enhanced client implementation with new initialization pattern
public class MyJiroClient : JiroClientBase
{
    public MyJiroClient(ILogger<MyJiroClient> logger) 
        : base(logger: logger) // HubConnection now optional
    {
    }

    protected override void SetupHandlers()
    {
        // Required implementation for event handlers
        CommandReceived += async command => 
        {
            // Handle command with enhanced logging
        };
        
        LogsRequested += async request => 
        {
            // RequestId automatically logged for correlation
            return new LogsResponse { RequestId = request.RequestId };
        };
    }

    // Enhanced initialization with error handling
    public async Task ConnectAsync(string hubUrl, string apiKey)
    {
        await InitializeAsync(
            hubUrl: hubUrl,
            apiKey: apiKey,
            exceptionHandler: (ex, context) => Console.WriteLine($"Error in {context}: {ex.Message}")
        );
    }
}

🚀 Deployment

  • Version 1.1.6 has been built, tested, and is ready for deployment to NuGet.org
  • All tests pass on .NET 9.0 runtime
  • Package metadata updated with latest version information
  • Enhanced thread safety validated under load testing

Note: This release significantly improves the robustness and production-readiness of JiroClientBase, making it easier to build reliable, thread-safe Jiro clients with comprehensive logging and error handling capabilities.

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