Add RAILS_RESQUE_REDIS_PASSWORD env var support

Author: kirillplatonov

README.md

@@ -42,6 +42,11 @@ end
 
 If `RAILS_RESQUE_REDIS` is set in `ENV` and is not the empty string, this gem will set `Resque.redis` equal to `ENV['RAILS_RESQUE_REDIS']` in an initializer.
 
+If you need to set a password for your redis server, use this env variable.
+```
+RAILS_RESQUE_REDIS_PASSWORD=secure_pass
+```
+
 For info on configuring Resque itself (and accepted values of `Resque.redis`) see [the Configuration section of the Resque README](https://github.com/resque/resque#configuration).
 
 

config/initializers/resque_config.rb

@@ -1,8 +1,16 @@
 require 'resque'
 
-# Previously, this initializer always set Resque.redis, and defaulted to '127.0.0.1:6379' if
-# RAILS_RESQUE_REDIS was not set.
-
+# Previously, this initializer always set Resque.redis, and defaulted
+# to '127.0.0.1:6379' if RAILS_RESQUE_REDIS was not set.
 if ENV['RAILS_RESQUE_REDIS'].present?
   Resque.redis = ENV['RAILS_RESQUE_REDIS']
 end
+
+# Have to do this to accept password because resque does not support
+# setting it in the string.
+redis_password = ENV['RAILS_RESQUE_REDIS_PASSWORD']
+if redis_password.present?
+  opts = Resque.redis.client.options
+  redis = Redis.new(opts.merge(password: redis_password))
+  Resque.redis = redis
+end