From ec0fd992a819552ed8befa0e61a8470a768ed1d3 Mon Sep 17 00:00:00 2001
From: e-cloud <saintscott119@gmail.com>
Date: Fri, 15 Jul 2016 20:34:51 +0800
Subject: [PATCH] refactor: appenders/logFacesAppender.js

---
 lib/appenders/logFacesAppender.js | 61 ++++++++++++++-----------------
 1 file changed, 28 insertions(+), 33 deletions(-)

diff --git a/lib/appenders/logFacesAppender.js b/lib/appenders/logFacesAppender.js
index ad88cfe..6df3a62 100644
--- a/lib/appenders/logFacesAppender.js
+++ b/lib/appenders/logFacesAppender.js
@@ -10,34 +10,25 @@
  *  - message text
  */
 
-"use strict";
-var dgram = require('dgram'),
-  layouts = require('../layouts'),
-  os = require('os'),
-  util = require('util');
-
-try {
-  var process = require('process');
-}
-catch (error) {
-  //this module is optional as it may not be available
-  //in older versions of node.js, so ignore if it failes to load
-}
+'use strict';
+const dgram = require('dgram');
+const layouts = require('../layouts');
+const os = require('os');
+const util = require('util');
 
 function logFacesAppender(config, layout) {
-  var lfsSock = dgram.createSocket('udp4');
-  var localhost = "";
+  const lfsSock = dgram.createSocket('udp4');
+  let localhost = '';
 
-  if (os && os.hostname())
-    localhost = os.hostname().toString();
+  if (os && os.hostname()) localhost = os.hostname().toString();
 
-  var pid = "";
-  if (process && process.pid)
-    pid = process.pid;
+  let pid;
+
+  if (process && process.pid) pid = process.pid;
 
   return function log(loggingEvent) {
-    var lfsEvent = {
-      a: config.application || "",                      // application name
+    const lfsEvent = {
+      a: config.application || '',                      // application name
       h: localhost,                                     // this host name
       t: loggingEvent.startTime.getTime(),              // time stamp
       p: loggingEvent.level.levelStr,                   // level (priority)
@@ -46,12 +37,14 @@ function logFacesAppender(config, layout) {
       m: layout(loggingEvent)                           // message text
     };
 
-    var buffer = new Buffer(JSON.stringify(lfsEvent));
-    var lfsHost = config.remoteHost || "127.0.0.1";
-    var lfsPort = config.port || 55201;
-    lfsSock.send(buffer, 0, buffer.length, lfsPort, lfsHost, function (err, bytes) {
+    const buffer = new Buffer(JSON.stringify(lfsEvent));
+    const lfsHost = config.remoteHost || '127.0.0.1';
+    const lfsPort = config.port || 55201;
+
+    /* eslint no-unused-vars:0 */
+    lfsSock.send(buffer, 0, buffer.length, lfsPort, lfsHost, (err, bytes) => {
       if (err) {
-        console.error("log4js.logFacesAppender send to %s:%d failed, error: %s",
+        console.error('log4js.logFacesAppender send to %s:%d failed, error: %s',
           config.host, config.port, util.inspect(err));
       }
     });
@@ -59,13 +52,15 @@ function logFacesAppender(config, layout) {
 }
 
 function configure(config) {
-  var layout;
-  if (config.layout)
+  let layout;
+  if (config.layout) {
     layout = layouts.layout(config.layout.type, config.layout);
-  else
-    layout = layouts.layout("pattern", { "type": "pattern", "pattern": "%m" });
+  } else {
+    layout = layouts.layout('pattern', { type: 'pattern', pattern: '%m' });
+  }
+
   return logFacesAppender(config, layout);
 }
 
-exports.appender = logFacesAppender;
-exports.configure = configure;
+module.exports.appender = logFacesAppender;
+module.exports.configure = configure;