Improve logging
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Sosthene
parent
06a6b5c7aa
commit
888ca48712
@ -1,3 +1,5 @@
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import { inspect } from 'util';
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interface LogContext {
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requestId?: string;
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userId?: string;
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@ -9,36 +11,194 @@ interface LogContext {
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}
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export class Logger {
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private static getLogLevel(): string {
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return process.env.LOG_LEVEL || (process.env.NODE_ENV === 'development' ? 'debug' : 'info');
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}
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private static shouldLog(level: string): boolean {
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const currentLevel = this.getLogLevel().toLowerCase();
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const levels = ['error', 'warn', 'info', 'debug'];
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const currentIndex = levels.indexOf(currentLevel);
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const messageIndex = levels.indexOf(level.toLowerCase());
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return messageIndex <= currentIndex;
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}
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private static formatMessage(level: string, message: string, context?: LogContext): string {
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const timestamp = new Date().toISOString();
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const baseLog = {
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timestamp,
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level,
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message,
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...context
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};
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const isDevelopment = process.env.NODE_ENV === 'development';
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const supportsColors = this.supportsColors();
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// Create a more readable header with level, timestamp, and message
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const levelSymbol = this.getLevelSymbol(level);
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const levelColor = this.getLevelColor(level, isDevelopment && supportsColors);
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const timestampFormatted = (isDevelopment && supportsColors) ?
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`\x1b[90m${timestamp}\x1b[0m` : // Gray timestamp in dev
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timestamp;
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const header = (isDevelopment && supportsColors) ?
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`${levelColor}${levelSymbol} [${level}]\x1b[0m ${timestampFormatted} \x1b[1m${message}\x1b[0m` :
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`${levelSymbol} [${level}] ${timestamp} ${message}`;
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// Format context data if present
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if (context && Object.keys(context).length > 0) {
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const contextFormatted = inspect(context, {
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depth: isDevelopment ? 10 : 6, // Much deeper inspection
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colors: isDevelopment && supportsColors,
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compact: false,
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breakLength: 100,
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maxArrayLength: isDevelopment ? 20 : 10, // Show more array elements
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maxStringLength: isDevelopment ? 500 : 200, // Longer strings
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showHidden: false,
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sorted: true,
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getters: false,
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showProxy: false, // Don't show proxy details
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customInspect: true // Use custom inspect methods
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});
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// Add visual separation
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const separator = (isDevelopment && supportsColors) ?
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`\x1b[90m${'─'.repeat(80)}\x1b[0m` :
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'─'.repeat(80);
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return `${header}\n${separator}\n${contextFormatted}`;
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}
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return header;
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}
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return JSON.stringify(baseLog, null, process.env.NODE_ENV === 'development' ? 2 : 0);
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private static supportsColors(): boolean {
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// Check if colors are explicitly disabled
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if (process.env.FORCE_COLOR === '0') return false;
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if (process.env.NO_COLOR) return false;
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if (process.env.TERM === 'dumb') return false;
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// Check if colors are explicitly enabled
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if (process.env.FORCE_COLOR === '1' || process.env.FORCE_COLOR === '2' || process.env.FORCE_COLOR === '3') return true;
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// Check if we're in a TTY
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if (process.stdout && !process.stdout.isTTY) return false;
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// Check terminal capabilities - be more permissive
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if (process.env.TERM && (
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process.env.TERM.includes('256color') ||
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process.env.TERM.includes('truecolor') ||
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process.env.TERM.includes('xterm') ||
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process.env.TERM.includes('screen') ||
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process.env.TERM.includes('tmux') ||
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process.env.TERM.includes('color')
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)) return true;
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// Check COLORTERM
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if (process.env.COLORTERM) return true;
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// Default to true for development mode if we have a TTY
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return process.env.NODE_ENV === 'development' && process.stdout.isTTY;
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}
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private static getLevelSymbol(level: string): string {
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const symbols = {
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'INFO': 'ℹ️ ',
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'DEBUG': '🐛',
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'WARN': '⚠️ ',
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'ERROR': '❌'
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};
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return symbols[level as keyof typeof symbols] || '📝';
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}
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private static getLevelPrefix(level: string, supportsColors: boolean): string {
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if (supportsColors) {
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return '';
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}
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// Provide visual distinction without colors
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const prefixes = {
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'ERROR': '>>> ',
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'WARN': '>>> ',
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'INFO': '>>> ',
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'DEBUG': '>>> '
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};
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return prefixes[level as keyof typeof prefixes] || '>>> ';
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}
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private static getLevelColor(level: string, isDevelopment: boolean): string {
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if (!isDevelopment) return '';
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const colors = {
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'INFO': '\x1b[36m', // Cyan
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'DEBUG': '\x1b[35m', // Magenta
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'WARN': '\x1b[33m', // Yellow
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'ERROR': '\x1b[31m' // Red
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};
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return colors[level as keyof typeof colors] || '\x1b[37m'; // White default
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}
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static info(message: string, context?: LogContext): void {
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console.log(this.formatMessage('INFO', message, context));
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if (this.shouldLog('info')) {
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console.log(this.formatMessage('INFO', message, context));
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}
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}
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static warn(message: string, context?: LogContext): void {
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console.warn(this.formatMessage('WARN', message, context));
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if (this.shouldLog('warn')) {
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console.warn(this.formatMessage('WARN', message, context));
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}
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}
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static error(message: string, context?: LogContext): void {
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console.error(this.formatMessage('ERROR', message, context));
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if (this.shouldLog('error')) {
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console.error(this.formatMessage('ERROR', message, context));
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}
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}
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static debug(message: string, context?: LogContext): void {
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if (process.env.NODE_ENV === 'development') {
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if (this.shouldLog('debug')) {
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console.debug(this.formatMessage('DEBUG', message, context));
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}
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}
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// Enhanced logging methods that automatically detect and format objects
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static logObject(message: string, obj: any, level: 'info' | 'debug' | 'warn' | 'error' = 'info'): void {
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const isDevelopment = process.env.NODE_ENV === 'development';
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const supportsColors = this.supportsColors();
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// Create a more readable object representation
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const formattedObj = inspect(obj, {
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depth: isDevelopment ? 10 : 6, // Much deeper inspection
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colors: isDevelopment && supportsColors,
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compact: false, // Always use expanded format for objects
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breakLength: 100,
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maxArrayLength: isDevelopment ? 20 : 10,
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maxStringLength: isDevelopment ? 500 : 200,
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showHidden: false,
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sorted: true,
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getters: false,
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showProxy: false,
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customInspect: true
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});
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const context = {
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objectType: obj?.constructor?.name || typeof obj,
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objectSize: JSON.stringify(obj).length,
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formattedObject: formattedObj
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};
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switch (level) {
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case 'info':
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this.info(message, context);
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break;
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case 'debug':
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this.debug(message, context);
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break;
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case 'warn':
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this.warn(message, context);
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break;
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case 'error':
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this.error(message, context);
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break;
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}
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}
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// Helper for HTTP request logging
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static logRequest(req: any, res: any, duration: number): void {
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const context = {
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@ -78,4 +238,37 @@ export class Logger {
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this.error(message, logContext);
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}
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}
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// Helper for logging API responses with better formatting
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static logApiResponse(operation: string, response: any, level: 'info' | 'debug' | 'warn' | 'error' = 'info'): void {
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const context = {
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operation,
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responseType: response?.constructor?.name || typeof response,
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statusCode: response?.status || response?.statusCode,
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hasData: !!response?.data,
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dataKeys: response?.data ? Object.keys(response.data) : [],
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responseSize: JSON.stringify(response).length
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};
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// Add the actual response data for detailed inspection
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if (process.env.NODE_ENV === 'development') {
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context['responseData'] = response;
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}
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switch (level) {
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case 'info':
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this.info(`API Response: ${operation}`, context);
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break;
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case 'debug':
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this.debug(`API Response: ${operation}`, context);
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break;
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case 'warn':
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this.warn(`API Response: ${operation}`, context);
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break;
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case 'error':
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this.error(`API Response: ${operation}`, context);
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break;
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}
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}
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}
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