separate utilities for logs

lib/index.js

@@ -13,7 +13,7 @@ const {
   createRouteLogger,
   createErrorLogger,
 } = require('./middlewares')
-const { createAppLogger } = require('./utils')
+const { createAppLogger } = require('./log-utils')
 
 const port = process.env.PORT
 const certEndpoint = process.env.CERT_ENDPOINT || ''

lib/log-utils.js

@@ -0,0 +1,37 @@
+const path = require('path')
+const winston = require('winston')
+require('winston-daily-rotate-file')
+
+const createDailyRotateLogFileTransport = () => {
+  const transport =  new (winston.transports.DailyRotateFile)({
+    filename: path.join(__dirname, '..', 'logs', 'app-%DATE%.log'),
+    datePattern: 'YYYY-MM-DD',
+    zippedArchive: false,
+    maxSize: '20m',
+    maxFiles: '14d',
+  })
+
+  return transport
+}
+
+const createTransports = (dev) => {
+  return [
+    dev && new winston.transports.Console(),
+    createDailyRotateLogFileTransport(),
+  ].filter(transport => transport)
+}
+
+const createAppLogger = ({ dev }) => {
+  return winston.createLogger({
+    transports: createTransports(dev),
+    format: winston.format.combine(
+      winston.format.timestamp(),
+      winston.format.json()
+    ),
+  })
+}
+
+module.exports = {
+  createTransports,
+  createAppLogger,
+}

lib/middlewares.js

@@ -1,7 +1,8 @@
 const winston = require('winston')
 const expressWinston = require('express-winston')
 const path = require('path')
-const { checkValidURL, createTransports } = require('./utils')
+const { checkValidURL } = require('./utils')
+const { createTransports } = require('./log-utils')
 const MissingURLParameter = () => new Error('Please provide valid URL or event number.')
 
 const sendJSON = (req) => {

lib/utils.js

@@ -1,6 +1,4 @@
 const dayjs = require('dayjs')
-const winston = require('winston')
-require('winston-daily-rotate-file')
 const path = require('path')
 
 const checkValidURL = (url) => {
@@ -55,34 +53,6 @@ const getNormalizedUrl = (URLparameter) => {
   return mobileUrl
 }
 
-const createDailyRotateLogFileTransport = () => {
-  const transport =  new (winston.transports.DailyRotateFile)({
-    filename: path.join(__dirname, '..', 'logs', 'app-%DATE%.log'),
-    datePattern: 'YYYY-MM-DD',
-    zippedArchive: false,
-    maxSize: '20m',
-    maxFiles: '14d',
-  })
-
-  return transport
-}
-
-const createTransports = (dev) => {
-  return [
-    dev && new winston.transports.Console(),
-    createDailyRotateLogFileTransport(),
-  ].filter(transport => transport)
-}
-
-const createAppLogger = ({ dev }) => {
-  return winston.createLogger({
-    transports: createTransports(dev),
-    format: winston.format.combine(
-      winston.format.timestamp(),
-      winston.format.json()
-    ),
-  })
-}
 
 module.exports = {
   checkValidURL,
@@ -92,6 +62,4 @@ module.exports = {
   createMobileURL,
   createURL,
   getNormalizedUrl,
-  createAppLogger,
-  createTransports,
 }