Module: Replay::Publisher

Defined in:
lib/replay/publisher.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.include_essentials(base) ⇒ Object 



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# File 'lib/replay/publisher.rb', line 7

def self.include_essentials(base)
  base.instance_variable_set :@application_blocks, {}
  base.extend ClassMethods
  base.extend(Replay::Events)
end

.included(base) ⇒ Object 



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# File 'lib/replay/publisher.rb', line 3

def self.included(base)
  include_essentials base
end

Instance Method Details

#add_subscriber(subscriber) ⇒ Object 



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# File 'lib/replay/publisher.rb', line 17

def add_subscriber(subscriber)
  subscription_manager.add_subscriber(subscriber)
end

#apply(events, raise_unhandled = true) ⇒ Object 



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# File 'lib/replay/publisher.rb', line 21

def apply(events, raise_unhandled = true)
  return apply([events], raise_unhandled) unless events.is_a?(Array)

  events.each do |event|
    blk = block_for(event.class)
    raise UnhandledEventError.new "event #{event.class.name} is not handled by #{self.class.name}" if (blk.nil? && raise_unhandled)
    self.instance_exec(event, &blk)
  end
  return self
end

#publish(event) ⇒ Object 



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# File 'lib/replay/publisher.rb', line 37

def publish(event)
  apply(event)
  subscription_manager.notify_subscribers(to_stream_id, event)
  return self
end

#subscription_manager ⇒ Object 



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# File 'lib/replay/publisher.rb', line 13

def subscription_manager
  @subscription_manager ||= Replay::SubscriptionManager.new(Replay.logger)
end

#to_stream_id ⇒ Object

Raises:



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# File 'lib/replay/publisher.rb', line 44

def to_stream_id
  raise Replay::UndefinedKeyError.new("No key attribute defined for #{self.class.to_s}") unless self.class.key_attr
  self.send(self.class.key_attr).to_s
end