Class: DirtyPipeline::Transition

Inherits:
Object
  • Object
show all
Defined in:
lib/dirty_pipeline/transition.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(event, railway) ⇒ Transition

Returns a new instance of Transition.



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# File 'lib/dirty_pipeline/transition.rb', line 41

def initialize(event, railway, *, **)
  @event = event
  @railway = railway
end

Instance Attribute Details

#event ⇒ Object (readonly)

Returns the value of attribute event.



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# File 'lib/dirty_pipeline/transition.rb', line 40

def event
  @event
end

#railway ⇒ Object (readonly)

Returns the value of attribute railway.



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# File 'lib/dirty_pipeline/transition.rb', line 40

def railway
  @railway
end

Class Method Details

.call(*args, **kwargs) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 32

def self.call(*args, **kwargs)
  event, pipeline, *args = args
  instance = new(event, pipeline.railway, *args, **kwargs)
  pipeline&.railway&.send(:[], :undo)&.send(:<<, event)
  pipeline&.railway&.send(:[], :finalize)&.send(:<<, event)
  instance.call(pipeline.subject)
end

.finalize(*args, **kwargs) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 18

def self.finalize(*args, **kwargs)
  event, pipeline, *args = args
  instance = new(event, pipeline.railway, *args, **kwargs)
  return unless instance.respond_to?(:finalize)
  instance.finalize(pipeline.subject)
end

.undo(*args, **kwargs) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 25

def self.undo(*args, **kwargs)
  event, pipeline, *args = args
  instance = new(event, pipeline.railway, *args, **kwargs)
  return unless instance.respond_to?(:undo)
  instance.undo(pipeline.subject)
end

Instance Method Details

#cache(key) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 46

def cache(key)
  event.cache.fetch(key) { event.cache[key] = yield }
end

#Failure(error) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 3

def Failure(error)
  railway&.switch_to(:undo)
  throw :fail_transition, error
end

#Success(changes = nil) ⇒ Object 



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# File 'lib/dirty_pipeline/transition.rb', line 8

def Success(changes = nil)
  case railway&.active
  when "call"
    railway&.switch_to(:finalize) if respond_to?(:finalize)
  when "finalize"
    railway&.switch_to(:call)
  end
  throw :success, changes.to_h
end