Use POST in place of GET to fetch usage data from server

server/app.rb

@@ -42,54 +42,69 @@ def url_for_asset(asset_name)
 end
 
 get "/api/usage" do
-  content_type :json
+  get_usage(params)
+end
 
-  date_start = params[:start] || (halt 500)
-  date_end = params[:end] || (halt 500)
-  unit = params[:unit] || (halt 500)
-  zone = params[:zone] || (halt 500)
-  users = params[:user] || (halt 500)
-  users_to_aggregate = params[:users_to_aggregate] || (halt 500)
-  cluster = params[:cluster] || (halt 500)
-  type = (params[:type] && params[:type].to_sym) || (halt 500)
+post "/api/usage" do
+  parsed = JSON.parse request.body.read
+  params = {}
+  parsed.each do |k,v|
+    params[k.to_sym] = v
+  end 
+  get_usage(params)
+end
 
-  time = {
-    :start => date_start.to_i,
-    :end => date_end.to_i,
-    :unit => unit,
-    :zone => zone
-  }
+helpers do 
+  def get_usage(params)
+    content_type :json
 
-  users = users.split(",").uniq
-  users_to_aggregate = users_to_aggregate.split(",").uniq
+    date_start = params[:start] || (halt 500)
+    date_end = params[:end] || (halt 500)
+    unit = params[:unit] || (halt 500)
+    zone = params[:zone] || (halt 500)
+    users = params[:user] || (halt 500)
+    users_to_aggregate = params[:users_to_aggregate] || (halt 500)
+    cluster = params[:cluster] || (halt 500)
+    type = (params[:type] && params[:type].to_sym) || (halt 500)
 
-  return_val = {}
+    time = {
+      :start => date_start.to_i,
+      :end => date_end.to_i,
+      :unit => unit,
+      :zone => zone
+    }
 
-  if users.size > 0
-    result = UsageData.fetch_per_user_data(cluster,users,time,type)
+    users = users.split(",").uniq
+    users_to_aggregate = users_to_aggregate.split(",").uniq
 
-    return_val[:times] = result[:times]
-    return_val[:users] = result[:users]
-  else
-    return_val[:users] = []
-  end
+    return_val = {}
 
-  return_val[:users_aggregated] = []
-  return_val[:num_aggregated_users] = 0
+    if users.size > 0
+      result = UsageData.fetch_per_user_data(cluster,users,time,type)
 
-  if users_to_aggregate.size > 0    
-    result = UsageData.fetch_aggregated_data(cluster,users_to_aggregate,time,type)
-
-    return_val[:users_aggregated] = result[:data]
-    return_val[:num_aggregated_users] = users_to_aggregate.size
+      return_val[:times] = result[:times]
+      return_val[:users] = result[:users]
+    else
+      return_val[:users] = []
+    end
 
-    # get times from first available, they're all the same
-    return_val[:times] ||= result[:times]
-  end
+    return_val[:users_aggregated] = []
+    return_val[:num_aggregated_users] = 0
+
+    if users_to_aggregate.size > 0    
+      result = UsageData.fetch_aggregated_data(cluster,users_to_aggregate,time,type)
+
+      return_val[:users_aggregated] = result[:data]
+      return_val[:num_aggregated_users] = users_to_aggregate.size
 
-  return_val[:cluster] = cluster
+      # get times from first available, they're all the same
+      return_val[:times] ||= result[:times]
+    end
 
-  return_val.to_json
+    return_val[:cluster] = cluster
+
+    return_val.to_json
+  end
 end
 
 get "/api/table" do

server/app/assets/javascripts/controllers/index.js.coffee

@@ -139,19 +139,22 @@ App.IndexController = Ember.Controller.extend(
 
     console?.log "Loading usage data"
 
+    data = {
+      start: start_time,
+      end: end_time,
+      unit: selected_unit
+      zone: selected_zone
+      user: selected_users.join(",")
+      users_to_aggregate: users_to_aggregate.join(",")
+      cluster: selected_cluster
+      type: selected_type
+    }
+
     this.incrementInProgress()
     $.ajax(
       url: "api/usage"
-      type: "GET"
-      data:
-        start: start_time,
-        end: end_time,
-        unit: selected_unit
-        zone: selected_zone
-        user: selected_users.join(",")
-        users_to_aggregate: users_to_aggregate.join(",")
-        cluster: selected_cluster
-        type: selected_type
+      type: "POST"
+      data: JSON.stringify(data)        
       success: (data) =>
         this.decrementInProgress()
         this.set("usageData",data)