Class: Interceptors::Pipeline

Inherits:
Object
  • Object
show all
Defined in:
lib/interceptors/pipeline.rb

Instance Method Summary collapse

Constructor Details

#initialize(interceptors) ⇒ Pipeline

Returns a new instance of Pipeline.



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# File 'lib/interceptors/pipeline.rb', line 5

def initialize(interceptors)
  @interceptors = Array(interceptors)
end

Instance Method Details

#call(ctx, &final_handler) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/interceptors/pipeline.rb', line 9

def call(ctx, &final_handler)
  raise ArgumentError, "a final handler block is required" unless final_handler

  chain = @interceptors.reverse.inject(final_handler) do |acc, interceptor|
    proc do |inner_ctx|
      interceptor.before(inner_ctx)
      result = interceptor.around(inner_ctx) { |next_ctx| acc.call(next_ctx) }
      interceptor.after(inner_ctx, result) || result
    end
  end

  chain.call(ctx)
end