Class: Dynflow::Middleware::Stack

Inherits:
Object
  • Object
show all
Includes:
Algebrick::TypeCheck
Defined in:
lib/dynflow/middleware/stack.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(next_stack, middleware_class, method, action) ⇒ Stack

Returns a new instance of Stack.



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# File 'lib/dynflow/middleware/stack.rb', line 15

def initialize(next_stack, middleware_class, method, action)
  @middleware_class = Child! middleware_class, Middleware
  @middleware       = middleware_class.new self
  @action           = Type! action, Dynflow::Action, NilClass
  @method           = Match! method, :delay, :plan, :run, :finalize, :plan_phase, :finalize_phase, :present, :hook
  @next_stack       = Type! next_stack, Middleware::Stack, Proc
end

Instance Attribute Details

#action ⇒ Object (readonly)

Returns the value of attribute action.



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# File 'lib/dynflow/middleware/stack.rb', line 7

def action
  @action
end

#middleware ⇒ Object (readonly)

Returns the value of attribute middleware.



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# File 'lib/dynflow/middleware/stack.rb', line 7

def middleware
  @middleware
end

#middleware_class ⇒ Object (readonly)

Returns the value of attribute middleware_class.



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# File 'lib/dynflow/middleware/stack.rb', line 7

def middleware_class
  @middleware_class
end

Class Method Details

.build(middleware_classes, method, action, &block) ⇒ Object 



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# File 'lib/dynflow/middleware/stack.rb', line 9

def self.build(middleware_classes, method, action, &block)
  middleware_classes.reverse_each.reduce(block) do |stack, klass|
    Middleware::Stack.new(stack, klass, method, action)
  end
end

Instance Method Details

#call(*args) ⇒ Object 



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# File 'lib/dynflow/middleware/stack.rb', line 23

def call(*args)
  @middleware.send @method, *args
end

#pass(*args) ⇒ Object 



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# File 'lib/dynflow/middleware/stack.rb', line 27

def pass(*args)
  @next_stack.call(*args)
end