Class: Eventr::Coordinator

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/eventr/coordinator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Coordinator

Returns a new instance of Coordinator.



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# File 'lib/eventr/coordinator.rb', line 26

def initialize
  @publishers = {}
  @consumers  = {}
end

Instance Attribute Details

#consumers ⇒ Object (readonly)

Returns the value of attribute consumers.



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# File 'lib/eventr/coordinator.rb', line 24

def consumers
  @consumers
end

#publishers(*queues) ⇒ Object (readonly)

Returns the value of attribute publishers.



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# File 'lib/eventr/coordinator.rb', line 24

def publishers
  @publishers
end

Class Method Details

.method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/eventr/coordinator.rb', line 31

def self.method_missing(method, *args, &block)
  return super unless instance.public_method.include? method
  instance.public_send(method, *args, &block)
end

Instance Method Details

#consumer(queue_name, &block) ⇒ Object 



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# File 'lib/eventr/coordinator.rb', line 54

def consumer(queue_name, &block)
  unless @publishers.include? queue_name
    fail Error::InvalidQueue, "#{queue_name} queue does not exist. Define a publisher for the queue first."
  end
  @consumers[queue_name] ||= []
  @consumers[queue_name] << Consumer.new(@publishers[queue_name], &block)
end

#publish(queue_name, event) ⇒ Object 



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# File 'lib/eventr/coordinator.rb', line 47

def publish(queue_name, event)
  unless @publishers.include? queue_name
    fail Error::InvalidQueue, "Publisher #{queue_name.inspect} doesn't exist"
  end
  @publishers[queue_name].push(event)
end

#publisher(queue_name, &block) ⇒ Object 



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# File 'lib/eventr/coordinator.rb', line 40

def publisher(queue_name, &block)
  if @publishers.include? queue_name
    fail Error::InvalidQueue, "publisher already defined for queue '#{queue_name}'"
  end
  @publishers[queue_name] = Publisher.new(&block)
end

#start ⇒ Object

rubycop:disable



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# File 'lib/eventr/coordinator.rb', line 62

def start # rubycop:disable
  @publishers.each do |q, p|
    p.start
    @consumers[q].each { |c| c.start }
  end
end

#stop ⇒ Object 



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# File 'lib/eventr/coordinator.rb', line 69

def stop
  @publishers.each do |q, p|
    p.stop
    @consumers[q].each { |c| c.stop }
  end
end