feat(logging): Add structured Logger and integrate into Smarts3Server; pass full config to server

2025-11-23 22:37:32 +00:00
parent a7bc902dd0
commit 7f3de92961
5 changed files with 547 additions and 29 deletions
--- a/ts/classes/logger.ts
+++ b/ts/classes/logger.ts
@@ -0,0 +1,130 @@
+import type { ILoggingConfig } from '../index.js';
+
+/**
+ * Log levels in order of severity
+ */
+const LOG_LEVELS = {
+  error: 0,
+  warn: 1,
+  info: 2,
+  debug: 3,
+} as const;
+
+type LogLevel = keyof typeof LOG_LEVELS;
+
+/**
+ * Structured logger with configurable levels and formats
+ */
+export class Logger {
+  private config: Required<ILoggingConfig>;
+  private minLevel: number;
+
+  constructor(config: ILoggingConfig) {
+    // Apply defaults for any missing config
+    this.config = {
+      level: config.level ?? 'info',
+      format: config.format ?? 'text',
+      enabled: config.enabled ?? true,
+    };
+    this.minLevel = LOG_LEVELS[this.config.level];
+  }
+
+  /**
+   * Check if a log level should be output
+   */
+  private shouldLog(level: LogLevel): boolean {
+    if (!this.config.enabled) {
+      return false;
+    }
+    return LOG_LEVELS[level] <= this.minLevel;
+  }
+
+  /**
+   * Format a log message
+   */
+  private format(level: LogLevel, message: string, meta?: Record<string, any>): string {
+    const timestamp = new Date().toISOString();
+
+    if (this.config.format === 'json') {
+      return JSON.stringify({
+        timestamp,
+        level,
+        message,
+        ...(meta || {}),
+      });
+    }
+
+    // Text format
+    const metaStr = meta ? ` ${JSON.stringify(meta)}` : '';
+    return `[${timestamp}] ${level.toUpperCase()}: ${message}${metaStr}`;
+  }
+
+  /**
+   * Log at error level
+   */
+  public error(message: string, meta?: Record<string, any>): void {
+    if (this.shouldLog('error')) {
+      console.error(this.format('error', message, meta));
+    }
+  }
+
+  /**
+   * Log at warn level
+   */
+  public warn(message: string, meta?: Record<string, any>): void {
+    if (this.shouldLog('warn')) {
+      console.warn(this.format('warn', message, meta));
+    }
+  }
+
+  /**
+   * Log at info level
+   */
+  public info(message: string, meta?: Record<string, any>): void {
+    if (this.shouldLog('info')) {
+      console.log(this.format('info', message, meta));
+    }
+  }
+
+  /**
+   * Log at debug level
+   */
+  public debug(message: string, meta?: Record<string, any>): void {
+    if (this.shouldLog('debug')) {
+      console.log(this.format('debug', message, meta));
+    }
+  }
+
+  /**
+   * Log HTTP request
+   */
+  public request(method: string, url: string, meta?: Record<string, any>): void {
+    this.info(`→ ${method} ${url}`, meta);
+  }
+
+  /**
+   * Log HTTP response
+   */
+  public response(method: string, url: string, statusCode: number, duration: number): void {
+    const level: LogLevel = statusCode >= 500 ? 'error' : statusCode >= 400 ? 'warn' : 'info';
+
+    if (this.shouldLog(level)) {
+      const message = `← ${method} ${url} - ${statusCode} (${duration}ms)`;
+
+      if (level === 'error') {
+        this.error(message, { statusCode, duration });
+      } else if (level === 'warn') {
+        this.warn(message, { statusCode, duration });
+      } else {
+        this.info(message, { statusCode, duration });
+      }
+    }
+  }
+
+  /**
+   * Log S3 error
+   */
+  public s3Error(code: string, message: string, status: number): void {
+    this.error(`[S3Error] ${code}: ${message}`, { code, status });
+  }
+}