Format message before adding loggly metadata

Also removed a throw err inside an asynchronous callback.

lib/appenders/loggly.js

@@ -1,7 +1,9 @@
 'use strict';
 var layouts = require('../layouts')
 , loggly = require('loggly')
-, os = require('os');
+, os = require('os')
+, passThrough = layouts.messagePassThroughLayout;
+
 
 /**
  * Loggly Appender. Sends logging events to Loggly using node-loggly 
@@ -17,8 +19,8 @@ var layouts = require('../layouts')
 function logglyAppender(config, layout) {
 	var client = loggly.createClient(config);
 
-	var packageMessage = function (loggingEvent) {
-		var BaseItem = function(level, msg) {
+	function packageMessage(loggingEvent) {
+		function BaseItem(level, msg) {
 			this.level    = level || loggingEvent.level.toString();
 			this.category = loggingEvent.categoryName;
 			this.hostname = os.hostname().toString();
@@ -26,48 +28,13 @@ function logglyAppender(config, layout) {
 				this.msg = msg;
 		};
 
-		var packageItem = function (item) {
-			if (item instanceof Error)
-				return new BaseItem('ERROR', item.message);
-
-			if (['string', 'number', 'boolean'].indexOf(typeof item) > -1 )
-				return new BaseItem(undefined, item);
-
-			var obj = new BaseItem();
-			if (Array.isArray(item))
-				return item.unshift(obj); //add base object as first item
-
-			if (item && Object.prototype.toString.call(item) === '[object Object]') {
-				for (var key in item) {
-					if (item.hasOwnProperty(key)) {
-						obj[key] = item[key]; //don't do packageItem on nested items, because level, category and hostname are needed on top level items only.
-					}
-				}
-			}
-
-			return obj;
-		};
-
-		if (loggingEvent.data.length === 1) {
-			return packageItem(loggingEvent.data[0]);
-		}
-		//length >1
-		var msg = loggingEvent.data;
-        for (var i = 0, l = msg.length; i < l; i++) {
-        	msg[i] = packageItem(msg[i]);
-        }
-
-		return msg;
+    var formattedMsg = passThrough(loggingEvent);
+    return new BaseItem(formattedMsg);
 	};
 
 	return function(loggingEvent) {
 		var a = layout ? layout(loggingEvent) : packageMessage(loggingEvent);
-		//console.log('log now', a);
-		client.log(a, config.tags, function(err, result) {
-			if (err) {
-				throw err;
-			}
-		});
+		client.log(a, config.tags);
 	};
 }