Class: RescueRegistry::ExceptionsApp

Inherits:
Object
  • Object
show all
Defined in:
lib/rescue_registry/exceptions_app.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ ExceptionsApp

Returns a new instance of ExceptionsApp.



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# File 'lib/rescue_registry/exceptions_app.rb', line 3

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rescue_registry/exceptions_app.rb', line 7

def call(env)
  request = ::ActionDispatch::Request.new(env)
  exception = request.get_header "action_dispatch.exception"

  if RescueRegistry.handles_exception?(exception)
    content_type = request.formats.first || Mime[:text]
    response = RescueRegistry.response_for_public(content_type, exception)
  end

  if response
    status, body, format = response

    if request.path_info != "/#{status}"
      warn "status mismatch; path_info=#{request.path_info}; status=#{status}"
    end

    [status, { "Content-Type" => "#{format}; charset=#{::ActionDispatch::Response.default_charset}",
      "Content-Length" => body.bytesize.to_s }, [body]]
  else
    # If we have no response, it means one of the following:
    # * RescueRegistry doesn't handle this exception
    # * RescueRegistry doesn't have a response to render for this content_type.
    # In either case, we use the default handler instead
    @app.call(env)
  end
end