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require 'active_support/ordered_hash'
module Rails
module Rack
class Metal
NotFoundResponse = [404, {}, []].freeze
NotFound = lambda { NotFoundResponse }
def self.metals
base = "#{Rails.root}/app/metal"
matcher = /\A#{Regexp.escape(base)}\/(.*)\.rb\Z/
Dir["#{base}/**/*.rb"].sort.map do |file|
file.sub!(matcher, '\1')
require file
file.classify.constantize
end
end
def initialize(app)
@app = app
@metals = ActiveSupport::OrderedHash.new
self.class.metals.each { |app| @metals[app] = true }
freeze
end
def call(env)
@metals.keys.each do |app|
result = app.call(env)
return result unless result[0].to_i == 404
end
@app.call(env)
end
end
end
end
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