Class: Reacto::Operations::Cache

Inherits:
Object
  • Object
show all
Defined in:
lib/reacto/operations/cache.rb

Constant Summary collapse

TYPES = 
{
  memory: Reacto::Cache::Memory,
  file: Reacto::Cache::File
}

Instance Method Summary collapse

Constructor Details

#initialize(type: :memory, **settings) ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/reacto/operations/cache.rb', line 14

def initialize(type: :memory, **settings)
  type = TYPES[type] if TYPES.key?(type)

  @cache = type.new(**settings)
end

Instance Method Details

#call(tracker) ⇒ Object 



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# File 'lib/reacto/operations/cache.rb', line 20

def call(tracker)
  if @cache.ready?
    @cache.each do |value|
      tracker.on_value(value)
    end

    if @cache.error?
      tracker.on_error(@cache.error)
    else
      tracker.on_close
    end

    NOTHING
  else
    Subscriptions::OperationSubscription.new(
      tracker,
      value: -> (v) do
        @cache.on_value(v)
        tracker.on_value(v)
      end,
      error: -> (e) do
        @cache.on_error(e)
        tracker.on_error(e)
      end,
      close: -> () do
        @cache.on_close
        tracker.on_close
      end
    )
  end
end