Class: Praxis::MiddlewareApp

Inherits:
Object
  • Object
show all
Defined in:
lib/praxis/middleware_app.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(inner) ⇒ MiddlewareApp

Returns a new instance of MiddlewareApp.



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# File 'lib/praxis/middleware_app.rb', line 31

def initialize(inner)
  @target = inner
  @setup_done = false
end

Instance Attribute Details

#target ⇒ Object (readonly)

Returns the value of attribute target.



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# File 'lib/praxis/middleware_app.rb', line 5

def target
  @target
end

Class Method Details

.for(**args) ⇒ Object

Initialize the application instance with the desired args, and return the wrapping class.



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# File 'lib/praxis/middleware_app.rb', line 8

def self.for(**args)
  Class.new(self) do
    @args = args
    @setup_done = false
    def self.name
      'MiddlewareApp'
    end

    class << self
      attr_reader :args
    end

    class << self
      attr_reader :setup_done
    end

    def self.setup
      @setup_done = true
      Praxis::Application.instance.setup(**@args)
    end
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/praxis/middleware_app.rb', line 36

def call(env)
  self.class.setup unless self.class.setup_done

  result = Praxis::Application.instance.call(env)

  if [404, 405].include?(result[0].to_i) && result[1]['X-Cascade'] == 'pass'
    last_body = result[2]
    last_body.close if last_body.respond_to? :close
    target.call(env)
  else
    # Respect X-Cascade header if it doesn't specify 'pass'
    result
  end
end