Switch to using actual node server to receive log events

app/core/Tracker.coffee

@@ -165,22 +165,13 @@ module.exports = class Tracker extends CocoClass
 
     properties[key] = value for key, value of @explicitTraits if @explicitTraits?
     console.log 'Tracking internal analytics event:', event, properties if debugAnalytics
-    if @isProduction
-      eventObject = {}
-      eventObject["event"] = event
-      eventObject["properties"] = properties unless _.isEmpty properties
-      eventObject["user"] = me.id
-      dataToSend = JSON.stringify eventObject
-      # console.log dataToSend if debugAnalytics
-      $.post("#{window.location.protocol or 'http:'}//analytics-cf.codecombat.com/analytics", dataToSend).fail ->
-        console.error "Analytics post failed!"
-    else
-      request = @supermodel.addRequestResource {
-        url: '/db/analytics.log.event/-/log_event'
-        data: {event: event, properties: properties}
-        method: 'POST'
-      }, 0
-      request.load()
+
+    request = @supermodel.addRequestResource {
+      url: '/db/analytics.log.event/-/log_event'
+      data: {event: event, properties: properties}
+      method: 'POST'
+    }, 0
+    request.load()
 
   trackTiming: (duration, category, variable, label) ->
     # https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings

server/models/AnalyticsLogEvent.coffee

@@ -6,15 +6,10 @@ http = require 'http'
 config = require '../../server_config'
 
 AnalyticsLogEventSchema = new mongoose.Schema({
-  u: mongoose.Schema.Types.ObjectId
-  e: Number  # event analytics.string ID
-  p: mongoose.Schema.Types.Mixed
-
-  # TODO: Remove these legacy properties after we stop querying for them (probably 30 days, ~2/16/15)
-  user: mongoose.Schema.Types.ObjectId
+  user: String #Actually a `mongoose.Schema.Types.ObjectId` but ...
   event: String
   properties: mongoose.Schema.Types.Mixed
-}, {strict: false})
+}, {strict: false, versionKey: false})
 
 AnalyticsLogEventSchema.index({event: 1, _id: -1})
 AnalyticsLogEventSchema.index({event: 1, 'properties.level': 1})
@@ -30,23 +25,9 @@ AnalyticsLogEventSchema.statics.logEvent = (user, event, properties={}) ->
     user: user
     event: event
     properties: properties
-  if config.isProduction and not config.unittest
-    docString = JSON.stringify doc
-    headers =
-      "Content-Type":'application/json'
-      "Content-Length": docString.length
 
-    options =
-      host: 'analytics.codecombat.com'
-      port: 80
-      path: '/analytics'
-      method: 'POST'
-      headers: headers
-    req = http.request options, (res) ->
-    req.on 'error', (e) -> log.warn e
-    req.write(docString)
-    req.end()
-  else
-    doc.save()
+  doc.save()
 
-module.exports = AnalyticsLogEvent = mongoose.model('analytics.log.event', AnalyticsLogEventSchema)
+analyticsMongoose = mongoose.createConnection "mongodb://#{config.mongo.analytics_host}:#{config.mongo.analytics_port}/#{config.mongo.analytics_db}"
+
+module.exports = AnalyticsLogEvent = analyticsMongoose.model(config.mongo.analytics_collection, AnalyticsLogEventSchema)

server_config.coffee

@@ -21,10 +21,13 @@ config.mongo =
   analytics_port: process.env.COCO_MONGO_ANALYTICS_PORT or 27017
   analytics_host: process.env.COCO_MONGO_ANALYTICS_HOST or 'localhost'
   analytics_db: process.env.COCO_MONGO_ANALYTICS_DATABASE_NAME or 'analytics'
+  analytics_collection: process.env.COCO_MONGO_ANALYTICS_COLLECTION or 'analytics.log.event'
   mongoose_replica_string: process.env.COCO_MONGO_MONGOOSE_REPLICA_STRING or ''
   mongoose_tokyo_replica_string: process.env.COCO_MONGO_MONGOOSE_TOKYO_REPLICA_STRING or ''
   mongoose_saoPaulo_replica_string : process.env.COCO_MONGO_MONGOOSE_SAOPAULO_REPLICA_STRING or ''
 
+
+
 if config.tokyo or config.saoPaulo
   config.mongo.readpref = 'nearest'
 else