Module: Announce::Subscriber

Defined in:
lib/announce/subscriber.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/announce/subscriber.rb', line 3

def self.included(base)
  base.class_eval { attr_accessor :subject, :action, :message }

  base.extend(ClassMethods)
end

Instance Method Details

#delegate_event(event) ⇒ Object

For use in adapters to delegate to method named receive_subject_action



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# File 'lib/announce/subscriber.rb', line 20

def delegate_event(event)
  @message = event.deep_symbolize_keys
  @subject = message[:subject]
  @action = message[:action]

  if [message, subject, action].any?(&:nil?)
    raise "Missing message, subject, or action for '#{event.inspect}'"
  end

  if respond_to?(delegate_method)
    public_send(delegate_method, message[:body])
  else
    raise "`#{self.class.name}` subscribed, but doesn't implement " \
            "`#{delegate_method}` for '#{event.inspect}'"
  end
end

#delegate_method(message = @message) ⇒ Object 



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# File 'lib/announce/subscriber.rb', line 37

def delegate_method(message = @message)
  ["receive", message[:subject], message[:action]].join("_")
end

#perform(*args) ⇒ Object 



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# File 'lib/announce/subscriber.rb', line 15

def perform(*args)
  delegate_event(*args)
end