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