implement the cache purger

workers/purge_cache_worker.rb

@@ -2,21 +2,22 @@ class PurgeCacheWorker
   include Sidekiq::Worker
   sidekiq_options queue: :purgecache, retry: 10, backtrace: true
 
+  def perform(subdomain, path)
+    res = Dnsruby::Resolver.new
 
-  def perform(payload)
-    # :nocov:
-    attempt = 0
-    begin
-      attempt += 1
-      $pubsub_pool.with do |redis|
-        redis.publish 'purgecache', payload.to_json
-      end
-    rescue Redis::BaseConnectionError => error
-      raise if attempt > 3
-      puts "pubsub error: #{error}, retrying in 1s"
-      sleep 1
-      retry
+    if ENV['RACK_ENV'] == 'test'
+      proxy_ips = ['10.0.0.1', '10.0.0.2']
+    else
+      proxy_ips = res.query($config['cache_purge_ips_uri']).answer.collect {|a| a.address.to_s}
+    end
+
+    proxy_ips.each do |proxy_ip|
+      url = "http://#{proxy_ip}/:cache/purge#{path}"
+
+      begin
+        RestClient.get(url, host: "#{subdomain}.neocities.org")
+      rescue RestClient::ResourceNotFound
+      end
     end
-    # :nocov:
   end
-end
+end