From a1434ff50b7cc86e1e1a2863366e235da0f77cd7 Mon Sep 17 00:00:00 2001
From: Jakub Jirutka <jakub@jirutka.cz>
Date: Tue, 25 Dec 2012 23:14:00 +0100
Subject: [PATCH] Fix shared Redis connection issue on Passenger

---
 config/initializers/passenger_fix.rb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 config/initializers/passenger_fix.rb

diff --git a/config/initializers/passenger_fix.rb b/config/initializers/passenger_fix.rb
new file mode 100644
index 00000000000..3a88eb10a36
--- /dev/null
+++ b/config/initializers/passenger_fix.rb
@@ -0,0 +1,16 @@
+if defined?(PhusionPassenger)
+
+  # When you're using Passenger with smart-lv2 (default) or smart spawn method,
+  # Resque doesn't recognize that it has been forked and should re-establish
+  # Redis connection. You can see this error message in log:
+  #   Redis::InheritedError, Tried to use a connection from a child process 
+  #   without reconnecting. You need to reconnect to Redis after forking.
+  # 
+  # This solution is based on 
+  # https://github.com/redis/redis-rb/wiki/redis-rb-on-Phusion-Passenger
+  #
+  PhusionPassenger.on_event(:starting_worker_process) do |forked|
+    # if we're in smart spawning mode, reconnect to Redis
+    Resque.redis.client.reconnect if forked
+  end
+end