Class: Rhod::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/rhod/middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/rhod/middleware.rb', line 4

def initialize
  @stack = []
end

Instance Method Details

#build_stack ⇒ Object 



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# File 'lib/rhod/middleware.rb', line 12

def build_stack
  @stack = @stack.map do |current_middleware|
    klass, args, block = current_middleware

    if klass.is_a?(Class)
      klass.new(*args, &block)
    else
      raise Rhod::InvalidMiddleware, "Unable to call middleware #{current_middleware}"
    end
  end
end

#on(event, env) ⇒ Object 



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# File 'lib/rhod/middleware.rb', line 24

def on(event, env)
  @stack.reduce(env) do |e, current_middleware|
    if current_middleware.respond_to?(:on)
      e = current_middleware.on(event, e)
    end
    e
  end
end

#use(middleware, *args, &block) ⇒ Object 



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# File 'lib/rhod/middleware.rb', line 8

def use(middleware, *args, &block)
  @stack << [middleware, args, block]
end