From dfdae481e4281089e223632d54cc8bc7eb37be9e Mon Sep 17 00:00:00 2001
From: Dwight Scott <dwight@forem.com>
Date: Thu, 7 Apr 2022 13:53:20 -0400
Subject: [PATCH] cache open graph response (#17157)

* Trigger Build

* Cache the HTML response for quicker previews

* remove unnecessary comments
---
 app/services/open_graph.rb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/app/services/open_graph.rb b/app/services/open_graph.rb
index 16fa9f37f..93062121d 100644
--- a/app/services/open_graph.rb
+++ b/app/services/open_graph.rb
@@ -9,9 +9,11 @@ class OpenGraph
   attr_reader :page, :tags
 
   DEFAULT_METHODS = %i[description title url].freeze
+  CACHE_EXPIRY_IN_MINUTES = 15
 
   def initialize(url)
-    @page = MetaInspector.new(url)
+    html = fetch_html(url)
+    @page = MetaInspector.new(url, document: html)
     @tags = meta_tags
   end
 
@@ -80,6 +82,12 @@ class OpenGraph
 
   private
 
+  def fetch_html(url)
+    Rails.cache.fetch("#{url}_open_graph_html", expires_in: CACHE_EXPIRY_IN_MINUTES.minutes) do
+      Net::HTTP.get(URI(url))
+    end
+  end
+
   def group(data)
     data.each_with_object({}) do |(key, value), hash|
       group_key = key.split(":").first