Torquebox JRuby/Rails app rarely loads

Ruby JRuby
1

I am having one heck of a time keeping an app running. Every time I
restart the app for any reason (and it’s in staging, so it restarts A
LOT), I get this “JRuby puke”:

javax.servlet.ServletException: org.jruby.exceptions.RaiseException:
(NoMethodError) undefined method `each’ for nil:NilClass
org.torquebox.web.servlet.RackFilter.doRack(RackFilter.java:117)
org.torquebox.web.servlet.RackFilter.doFilter(RackFilter.java:101)
org.torquebox.web.servlet.RackFilter.doFilter(RackFilter.java:72)
root cause

org.jruby.exceptions.RaiseException: (NoMethodError) undefined method
`each’ for nil:NilClass
ClassMethods.register_javascript_expansion(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/actionpack-3.2.1/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb:68)
(Anonymous).Railtie(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/actionpack-3.2.1/lib/action_view/railtie.rb:21)
org.jruby.RubyKernel.instance_eval(org/jruby/RubyKernel.java:2045)
(Anonymous).execute_hook(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:36)
(Anonymous).on_load(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:26)
(Anonymous).Railtie(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/actionpack-3.2.1/lib/action_view/railtie.rb:20)
org.jruby.RubyKernel.instance_exec(org/jruby/RubyKernel.java:2062)
Rails::Initializable::Initializer.run(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/railties-3.2.1/lib/rails/initializable.rb:30)
(Anonymous).run_initializers(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/railties-3.2.1/lib/rails/initializable.rb:55)
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1615)
Initializable.run_initializers(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/railties-3.2.1/lib/rails/initializable.rb:54)
Application.initialize!(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/railties-3.2.1/lib/rails/application.rb:136)
Class.method_added(file:/f:/torquebox-2.0.3/jboss/modules/org/torquebox/web/main/torquebox-web.jar!/org/torquebox/web/rails/boot.rb:89)
org.jruby.RubyKernel.send(org/jruby/RubyKernel.java:2076)
ClassMethods.method_missing(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/railties-3.2.1/lib/rails/railtie/configurable.rb:30)
(Anonymous).(root)(F:/Websites/rsacfod-torque/config/environment.rb:5)
org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:1033)
ActiveSupport::Dependencies::Loadable.require(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251)
ActiveSupport::Dependencies::Loadable.load_dependency(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:236)
ActiveSupport::Dependencies::Loadable.require(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251)
(Anonymous).(root)(F:/Websites/rsacfod-torque/config/environment.rb:5)
org.jruby.RubyKernel.instance_eval(org/jruby/RubyKernel.java:2045)
Builder.initialize(f:/torquebox-2.0.3/jruby/lib/ruby/gems/1.8/gems/rack-1.4.5/lib/rack/builder.rb:51)
(Anonymous).(root)(F:\Websites\rsacfod-torque\config.ru:2)

Now it says it’s something to do with javascript_tag_helpers.rb. Is this
really possible? I was leaning more toward jdbc/mysql stuff.

I’m deploying to Torquebox 2.0.3. I’ve attempted to move to Torquebox
2.3.0, but this Windows server refuses to start it as a service… and I
can’t just start it from a command line and leave it logged in.

Does anyone see anything in this trace that I may not be seeing?

Thanks,
-Jim

2

When I’ve seen other TorqueBox users report this kind of issue in the
past, there’s usually a Rails initialization error earlier in the logs
that’s the real cause of the failure. Look a bit earlier in the logs and
see if you see some an error thrown when TorqueBox tries to initialize
the Rails runtime.

Ben

3

Running Torquebox from the commandline gives me this before the error I
was seeing:

17:54:59,953 ERROR [org.torquebox.core.runtime] (http-/127.0.0.1:8080-1)
Error during execution: require %q(rack)
Rack::Builder.new{(

This file is used by Rack-based servers to start the application.

require ::File.expand_path(’…/config/environment’, FILE)
run Rsacfod::Application

)}.to_app: org.jruby.exceptions.RaiseException: (NoMethodError)
undefined method `each’ for nil:NilClass

So it’s a rack error? This app runs in Trinidad (albeit poorly and
without serving assets). So it’s just Torquebox.

-Jim