FEATURE: unicorn sidekiq will restart sidekiq on complete failure.

(checks every 30 minutes for complete failure)

config/unicorn.conf.rb

@@ -72,6 +72,7 @@ before_fork do |server, worker|
     sidekiqs = ENV['UNICORN_SIDEKIQS'].to_i
     if sidekiqs > 0
       puts "Starting up #{sidekiqs} supervised sidekiqs"
+
       require 'demon/sidekiq'
 
       Demon::Sidekiq.start(sidekiqs)
@@ -79,8 +80,26 @@ before_fork do |server, worker|
       class ::Unicorn::HttpServer
         alias :master_sleep_orig :master_sleep
 
+        def check_sidekiq_heartbeat
+          @sidekiq_heartbeat_interval ||= 30.minutes
+          @sidekiq_next_heartbeat_check ||= Time.new.to_i + @sidekiq_heartbeat_interval
+
+          if @sidekiq_next_heartbeat_check < Time.new.to_i
+            last_heartbeat = Jobs::RunHeartbeat.last_heartbeat
+            if last_heartbeat < Time.new.to_i - @sidekiq_heartbeat_interval
+              STDERR.puts "Sidekiq heartbeat test failed, restarting"
+              puts "Sidekiq heartbeat test failed, restarting"
+
+              Demon::Sidekiq.restart
+            end
+            @sidekiq_next_heartbeat_check = Time.new.to_i + @sidekiq_heartbeat_interval
+          end
+        end
+
         def master_sleep(sec)
           Demon::Sidekiq.ensure_running
+          check_sidekiq_heartbeat
+
           master_sleep_orig(sec)
         end
       end