thrilled-be-core/dist/examples/logger-usage.js

Core Express backend package with middleware, logging, security, and base application setup

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Logger_1 = require("../logging/Logger");
// Example 1: Using the default logger
console.log('=== Example 1: Default Logger ===');
Logger_1.defaultLogger.info('Application starting up');
Logger_1.defaultLogger.warn('This is a warning message');
Logger_1.defaultLogger.error('This is an error message');
// Example 2: Creating a custom logger for a service
console.log('\n=== Example 2: Custom Service Logger ===');
const apiLogger = (0, Logger_1.createLogger)({
    level: 'debug',
    dir: './logs/api',
    format: 'json',
    maxFiles: 7,
});
apiLogger.info('API server starting', { port: 3000, env: 'development' });
apiLogger.debug('Database connection established', {
    host: 'localhost',
    db: 'myapp',
});
// Example 3: Error logging with Error objects
console.log('\n=== Example 3: Error Handling ===');
const authLogger = (0, Logger_1.createLogger)({
    level: 'info',
    dir: './logs/auth',
    format: 'simple',
});
try {
    // Simulate an error
    throw new Error('Invalid credentials');
}
catch (error) {
    authLogger.error(error, {
        userId: 123,
        action: 'login_attempt',
        ip: '192.168.1.1',
    });
}
// Example 4: Different log levels
console.log('\n=== Example 4: Log Levels ===');
const appLogger = Logger_1.Logger.create({
    level: 'debug',
    dir: './logs/app',
    correlationId: true,
});
appLogger.error('Critical error occurred');
appLogger.warn('Memory usage is high', { memoryUsage: '85%' });
appLogger.info('User registered successfully', {
    userId: 456,
    email: 'user@example.com',
});
appLogger.debug('Processing request', {
    requestId: 'req-789',
    step: 'validation',
});
// Example 5: Disabling correlation IDs
console.log('\n=== Example 5: Without Correlation IDs ===');
const simpleLogger = (0, Logger_1.createLogger)({
    level: 'info',
    dir: './logs/simple',
    correlationId: false,
});
simpleLogger.info('Simple log message without correlation ID');
console.log('\nLogger examples completed. Check the ./logs directories for generated log files.');