Initial: Privacy Gateway Projekt mit Team-Implementierung

backend/src/utils/logger.ts

@@ -0,0 +1,39 @@
+import winston from 'winston';
+
+const { combine, timestamp, json, printf, colorize, errors } = winston.format;
+
+const devFormat = printf(({ level, message, timestamp, ...metadata }) => {
+  let msg = `${timestamp} [${level}]: ${message}`;
+  if (Object.keys(metadata).length > 0) {
+    msg += ` ${JSON.stringify(metadata)}`;
+  }
+  return msg;
+});
+
+export const createLogger = (service: string): winston.Logger => {
+  const isDev = process.env.NODE_ENV !== 'production';
+  const logLevel = process.env.LOG_LEVEL || (isDev ? 'debug' : 'info');
+
+  return winston.createLogger({
+    level: logLevel,
+    defaultMeta: { service },
+    format: isDev
+      ? combine(
+          colorize(),
+          timestamp({ format: 'HH:mm:ss' }),
+          errors({ stack: true }),
+          devFormat
+        )
+      : combine(
+          timestamp(),
+          json()
+        ),
+    transports: [
+      new winston.transports.Console({
+        stderrLevels: ['error'],
+      }),
+    ],
+  });
+};
+
+export const logger = createLogger('App');