Class: Cloudfuji::Data

Inherits:
Object
  • Object
show all
Defined in:
lib/cloudfuji/data.rb

Overview

:nodoc:

Constant Summary collapse

@@observers = 
[]

Class Method Summary collapse

Class Method Details

.add_observer(observer) ⇒ Object 



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# File 'lib/cloudfuji/data.rb', line 6

def add_observer(observer)
  puts "Subscribing #{observer} to Cloudfuji data calls"
  @@observers << observer
end

.fire(data, event) ⇒ Object 



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# File 'lib/cloudfuji/data.rb', line 24

def fire(data, event)
  puts "Cloudfuji Hooks Firing #{event} with => #{data.inspect}"

  halted = false
  # Test if each observer responds to the named event, or #catch_all
  [event, :catch_all].each do |method|
    @@observers.each do |observer|
      # Process observer if event propagation isn't halted,
      # or we are trying the #catch_all method
      # (All #catch_all methods should be processed regardless of
      #  halted status)
      if !halted || method == :catch_all
        puts "#{observer}.respond_to?(#{method}) => #{observer.respond_to?(method)}"

        if observer.respond_to?(method)
          # Make a copy of the data so it's not mutated as the events
          # pass through the observers
          observer.instance_variable_set("@params", data.dup)

          result = observer.send(method)

          # Allow an observer to halt event propagation for
          # other named event methods
          if result == :halt
            puts "Observer #{observer} halted event propagation"
            halted = true
          end
        end
      end
    end
  end
end

.observed_events ⇒ Object

Returns an array of the unique instance methods defined for all observers, except #catch_all



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# File 'lib/cloudfuji/data.rb', line 13

def observed_events
  if Cloudfuji::Platform.on_cloudfuji?
    @@observers.map {|observer|
      observer.class.instance_methods - Cloudfuji::EventObserver.instance_methods
    }.flatten.uniq - [:catch_all]
  else
    # Return some dummy events if in development
    %w(dummy_event app_claimed app_destroyed user_added email_opened).map(&:to_sym)
  end
end