From 674788dc49b70c246c1542cdb514c7457a9d7b87 Mon Sep 17 00:00:00 2001
From: Laurent Demailly <ldemailly@gmail.com>
Date: Tue, 21 Nov 2017 05:11:47 -0800
Subject: [PATCH] Add external url cache (#724)
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That should help avoid the spurious failures or at least make “rebuild”
work if the remote site isn’t actually down
---
 .circleci/config.yml | 8 ++++++++
 .gitignore           | 1 +
 Rakefile             | 1 +
 3 files changed, 10 insertions(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 11205f791e..b52390a91f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -31,5 +31,13 @@ jobs:
             - ./vendor/bundle
           key: v1-dependencies-{{ checksum "Gemfile.lock" }}
 
+      - restore_cache:
+          keys:
+          - htmlproofer-cache
       # Run the test/html checker
       - run: bundle exec rake test
+      # save the external URLs cache
+      - save_cache:
+          key: htmlproofer-cache
+          paths:
+            - tmp/.htmlproofer
diff --git a/.gitignore b/.gitignore
index 2d51f1ea83..39b7d9de23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ config_override.yml
 *.iml
 .idea/
 .bundle/
+tmp/
diff --git a/Rakefile b/Rakefile
index e8db52863c..eb0f6e02a3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,6 +3,7 @@ require 'html-proofer'
 task :test do
   sh "bundle exec jekyll build"
   options = { :check_html => true, # :validation => { :report_missing_names, :report_invalid_tags => true, :report_script_embeds => true },
+              :cache => { :timeframe => '2d'},
               :assume_extension => true, :url_ignore => [/localhost|github\.com\/istio\/istio\.github\.io\/edit\/master\//] }
   HTMLProofer.check_directory("./_site", options).run
 end