🎨 CCB Logger

🚀 A beautiful, terminal-focused structured logger for Rust

CCB brings elegance and visual appeal to the Rust ecosystem. It is designed for command-line interface (CLI) applications that want to achieve beautiful, readable, and structured log output.

✨ Features

• 🎯 Semantic Log Levels: Trace, Debug, Info, Warn, Error with four-character alignment
• 🌈 Automatic Colors: Beautiful colored output with smart terminal detection
• ⏰ Precise Timestamps: High-precision timestamps in 2006-01-02 03:04:05.789 format
• 🔗 Chainable Context: Add structured key-value pairs with with(key, value)
• 🛠️ Simple Macros: Easy-to-use macros with variadic arguments support
• 🎛️ Global Logger: Set and use a global logger instance across your application
• 📱 Terminal Friendly: No icons, maximum compatibility across terminals
• ⚡ Zero Config: Works beautifully out of the box with sensible defaults

🚀 Quick Start

Add CCB Logger to your Cargo.toml:

[dependencies]
ccb = "0.1.0"

Basic Usage

use ccb::{info, warn, error, debug, trace};

fn main() {
    // Simple logging
    info!("Application started");
    warn!("This is a warning");
    error!("Something went wrong");
    
    // With structured fields
    info!("User login", "user_id", "12345", "ip", "192.168.1.100");
    error!("Database error", "table", "users", "error", "connection timeout");
}

Custom Logger Configuration

use ccb::{Logger, Level, set_global_logger};

fn main() {
    // Create a custom logger
    let logger = Logger::new()
        .with_level(Level::Debug)
        .with_colors(true)
        .with_timestamp(true)
        .with("service", "my-app")
        .with("version", "1.0.0");
    
    // Set as global logger
    set_global_logger(logger);
    
    // Now all macro calls will use the configured logger
    debug!("Debug message with context");
    info!("Request processed", "method", "GET", "path", "/api/users");
}

Advanced Usage

use ccb::{Logger, Level, Config};

fn main() {
    // Custom configuration
    let config = Config {
        level: Level::Trace,
        use_colors: false,  // Disable colors for CI/CD
        show_timestamp: true,
    };
    
    let logger = Logger::with_config(config)
        .with("component", "auth")
        .with("environment", "production");
    
    // Direct logger usage
    logger.trace("Entering function", &[("fn", "authenticate")]);
    logger.info("Authentication successful", &[("user", "alice")]);
    logger.error("Rate limit exceeded", &[("ip", "192.168.1.1"), ("attempts", "10")]);
}

📊 Output Examples

2024-01-15 14:30:25.1234 INFO Application started
2024-01-15 14:30:25.1235 WARN Configuration file not found path=config.toml
2024-01-15 14:30:25.1236 INFO User login user_id=12345 ip=192.168.1.100
2024-01-15 14:30:25.1237 ERRO Database connection failed error=timeout retry_count=3
2024-01-15 14:30:25.1238 DEBG Cache hit key=user:12345 ttl=300

🎯 Log Levels

CCB supports five log levels with four-character alignment:

🔧 Configuration Options

Logger Methods

• with_level(level) - Set minimum log level
• with_colors(bool) - Enable/disable colored output
• with_timestamp(bool) - Show/hide timestamps
• with(key, value) - Add context key-value pair

Environment Detection

CCB automatically detects if output is going to a terminal and enables colors accordingly. You can override this behavior:

let logger = Logger::new().with_colors(false); // Force disable colors

🧪 Testing

Run the test suite:

cargo test

Run tests with output:

cargo test -- --nocapture

📚 Examples

Check out the examples/ directory for more usage patterns:

cargo run --example basic_usage

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

1. 🍴 Fork the repository
2. 🌟 Create your feature branch (git checkout -b feature/amazing-feature)
3. ✅ Commit your changes (git commit -m 'Add some amazing feature')
4. 📤 Push to the branch (git push origin feature/amazing-feature)
5. 🔄 Open a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Inspired by charmbracelet/log ❤️
• CCB has no real meaning, the name was given by a friend
• Built with ❤️ for the Rust community
• Thanks to all contributors! 🎉

🔗 Related Projects

• charmbracelet/log - The original Go implementation
• env_logger - Simple logger controlled via environment
• tracing - Application-level tracing framework