Add log library

lib/log/Readme.md

@@ -0,0 +1,13 @@
+<a name="createLog"></a>
+
+## createLog(label, filename) ⇒ <code>object</code>
+createLog() - Returns a winston logger configured to service
+
+**Kind**: global function  
+**Returns**: <code>object</code> - Winston logger  
+
+| Param | Type | Default | Description |
+| --- | --- | --- | --- |
+| label | <code>string</code> |  | Label appearing on logger |
+| filename | <code>string</code> | <code>null</code> | Optional file to write log to |
+

lib/log/index.js

@@ -0,0 +1,22 @@
+'use strict'
+
+const winston = require('winston')
+
+/**
+* createLog() - Returns a winston logger configured to service
+*
+* @param {string} label Label appearing on logger
+* @param {string} filename Optional file to write log to 
+* @returns {object} Winston logger
+*/
+function createLog (label, filename = null) {
+    const transports = [ new (winston.transports.Console)({ label : label }) ]
+    if (filename !== null) {
+        transports.push( new (winston.transports.File)({ label : label, filename : filename }) )
+    }
+    return new (winston.Logger)({
+        transports: transports
+    })
+}
+
+module.exports = createLog

lib/wifi/index.js

@@ -9,6 +9,7 @@ const refresh = '/sbin/ifdown wlan0 && /sbin/ifup --force wlan0'
 const iwlist = '/sbin/iwlist wlan0 scanning | grep "ESSID:"'
 const iwgetid = '/sbin/iwgetid'
 
+const log = require('../log')('wifi')
 const exec = require('child_process').exec
 const fs = require('fs')