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org.jruby.exceptions.RaiseException: (NameError) uninitialized constant #4987

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ralleman opened this issue Jan 17, 2018 · 6 comments
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org.jruby.exceptions.RaiseException: (NameError) uninitialized constant #4987

ralleman opened this issue Jan 17, 2018 · 6 comments
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Invalid or Duplicate

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@ralleman
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I'm repeating what I've written on Stackoverflow here https://stackoverflow.com/questions/48302471/org-jruby-exceptions-raiseexception-nameerror-uninitialized-constant/48304548#48304548. Looks like a bug to me.

I'm getting the following error from a JRuby wrapping of the ActiveMerchant library:

org.jruby.exceptions.RaiseException: (NameError) uninitialized constant ActiveMerchant::Billing::SecurePayAuGateway
    at org.jruby.RubyModule.const_missing(org/jruby/RubyModule.java:3345)
    at org.jruby.RubyModule.const_get(org/jruby/RubyModule.java:3290)
    at RUBY.createGateway(classpath:/scripts/main.rb:79)

The code initiating it is:

gateway = ActiveMerchant::Billing::const_get(name).new(options)

I think this is happening because there is some dynamic loading of the gateways happening in gateways.rb:

module ActiveMerchant
    module Billing
        load_path = Pathname.new(__FILE__ + '/../../..')
        Dir[File.dirname(__FILE__) + '/gateways/**/*.rb'].each do |filename|
            gateway_name      = File.basename(filename, '.rb')
            gateway_classname = "#{gateway_name}_gateway".camelize
            gateway_filename  = Pathname.new(filename).relative_path_from(load_path).sub_ext('')

            autoload(gateway_classname, gateway_filename)
        end
    end
end

This works during unit tests because the Ruby files are real files in my Maven target directory. However in the final application, the Ruby files are contained within a Jar which is in a Jar.
@kares
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kares commented Jan 18, 2018 •
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please - as the guidelines suggest - you should specify the JRuby version you're using at the minimal.
old (defunct) JRuby 1.7 had autoload-ing issues that simply won't fix and are expected to be resolved on 9K

@ralleman
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ralleman commented Jan 18, 2018 •
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Sorry, version 9.1.15.0 JRuby. And I'm using ActiveMerchant gem 1.75.0. I'm using gem-maven-plugin 1.0.0 for assembly. Java 8.

@ralleman
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I've managed to get the app working by externalising the gems. Unfortunately I couldn't get it working if the gems are inside any jar file, including the top level one.

@mkristian
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@ralleman yes, that is probably not working due to maybe Pathname.new(filename).relative_path_from(load_path) or some of the other path manipulation you mentioned in your issue. so externalising is the thing to go.

@headius
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headius commented Feb 13, 2018

@ralleman If you can investigate more, or provide a simple repro (like a git repository we can just clone and run) we might be able to do more here, but since the related Ruby libraries are using their own tricks to look up other files we might be a little stuck. You could put some logic into the Billing module code you show above and see where it's getting mixed up about paths inside the jar. Dir[], File.basename and the others should work inside jars, but there's a lot of caveats.

@kares
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kares commented Dec 6, 2022

closing as defunct

@kares kares closed this as completed Dec 6, 2022
@kares kares added this to the Invalid or Duplicate milestone Dec 6, 2022
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@headius @mkristian @kares @ralleman