implemented logging

src/logger.js

@@ -0,0 +1,25 @@
+const winston = require('winston');
+require('winston-daily-rotate-file');
+
+const logConfiguration = {
+    'transports': [
+        new winston.transports.DailyRotateFile({
+            filename: './logs/application-%DATE%.log',
+            datePattern: 'YYYY-MM-DD-HH',
+            zippedArchive: true,
+            maxSize: '20m',
+            maxFiles: '90d',
+            level: 'info'
+        })
+    ],
+    format: winston.format.combine(
+        winston.format.timestamp({
+            format: 'YYYY-MM-DD HH:mm:ss'
+        }),
+        winston.format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
+    )
+};
+
+const logger = winston.createLogger(logConfiguration);
+
+module.exports = logger;