project setup with core files including configuration, package management, and basic structure. Added .gitignore, README, and various TypeScript types for CMS components. Implemented initial components and layouts for the application.

middlelayer/monitoring/logger.ts

@@ -0,0 +1,86 @@
+import winston from "winston";
+
+/**
+ * Structured Logging mit Winston
+ * Erstellt JSON-Logs für bessere Analyse und Monitoring
+ */
+export const logger = winston.createLogger({
+  level: process.env.LOG_LEVEL || "info",
+  format: winston.format.combine(
+    winston.format.timestamp(),
+    winston.format.errors({ stack: true }),
+    winston.format.json()
+  ),
+  defaultMeta: {
+    service: "graphql-middlelayer",
+    environment: process.env.NODE_ENV || "development",
+  },
+  transports: [
+    // Console Output (für Development)
+    new winston.transports.Console({
+      format: winston.format.combine(
+        winston.format.colorize(),
+        winston.format.printf(({ timestamp, level, message, ...meta }) => {
+          const metaStr = Object.keys(meta).length
+            ? JSON.stringify(meta, null, 2)
+            : "";
+          return `${timestamp} [${level}]: ${message} ${metaStr}`;
+        })
+      ),
+    }),
+    // File Output (für Production)
+    ...(process.env.NODE_ENV === "production"
+      ? [
+          new winston.transports.File({
+            filename: "logs/error.log",
+            level: "error",
+          }),
+          new winston.transports.File({
+            filename: "logs/combined.log",
+          }),
+        ]
+      : []),
+  ],
+});
+
+// Helper-Funktionen für strukturiertes Logging
+export const logQuery = (
+  operationName: string,
+  variables: any,
+  duration: number
+) => {
+  logger.info("GraphQL Query executed", {
+    operation: operationName,
+    variables,
+    duration: `${duration}ms`,
+    type: "query",
+  });
+};
+
+export const logError = (error: Error, context?: Record<string, any>) => {
+  logger.error("Error occurred", {
+    error: {
+      message: error.message,
+      stack: error.stack,
+      name: error.name,
+    },
+    ...context,
+    type: "error",
+  });
+};
+
+export const logCacheHit = (key: string, type: string) => {
+  logger.debug("Cache hit", {
+    cacheKey: key,
+    cacheType: type,
+    type: "cache",
+  });
+};
+
+export const logCacheMiss = (key: string, type: string) => {
+  logger.debug("Cache miss", {
+    cacheKey: key,
+    cacheType: type,
+    type: "cache",
+  });
+};