From 05eaee6d11ce391b089b3d8a2f8e47db04086324 Mon Sep 17 00:00:00 2001
From: Dan Buch <daniel.buch@gmail.com>
Date: Thu, 27 Aug 2015 00:51:56 -0400
Subject: [PATCH] Fail fast if response is empty

---
 cpi_feed.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpi_feed.rb b/cpi_feed.rb
index 3689ca7..9878037 100644
--- a/cpi_feed.rb
+++ b/cpi_feed.rb
@@ -8,6 +8,8 @@ class CPIFeed < Sinatra::Base
   get '/' do
     resp = JSON.parse(Faraday.get(cpi_series_url).body)
 
+    halt 502 unless resp['Results']['series']
+
     expires 300, :public, :must_revalidate
     content_type :csv
     "cpi\n#{resp['Results']['series'].first['data'].first['value']}\n"