Class: Peatio::MQ::Events::RangerEvents

Inherits:
Object
  • Object
show all
Defined in:
lib/peatio/mq/events.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RangerEvents

Returns a new instance of RangerEvents.



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# File 'lib/peatio/mq/events.rb', line 56

def initialize
  @exchange_name = "peatio.events.ranger"
end

Instance Attribute Details

#exchange_name ⇒ Object

Returns the value of attribute exchange_name.



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# File 'lib/peatio/mq/events.rb', line 54

def exchange_name
  @exchange_name
end

Instance Method Details

#connect! ⇒ Object 



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# File 'lib/peatio/mq/events.rb', line 60

def connect!
  if Peatio::MQ::Client.channel.nil?
    Peatio::MQ::Client.new
    Peatio::MQ::Client.connect!
    Peatio::MQ::Client.create_channel!
  end
  @exchange = Peatio::MQ::Client.channel.topic(@exchange_name)
end

#publish(type, id, event, payload) ⇒ Object 



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# File 'lib/peatio/mq/events.rb', line 69

def publish(type, id, event, payload)
  routing_key = [type, id, event].join(".")
  serialized_data = JSON.dump(payload)

  @exchange.publish(serialized_data, routing_key: routing_key)

  Peatio::Logger::debug { "published event to #{routing_key} " }

  yield if block_given?
end

#subscribe ⇒ Object 



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# File 'lib/peatio/mq/events.rb', line 80

def subscribe
  exchange = Peatio::MQ::Client.channel.topic(@exchange_name)

  suffix = "#{Socket.gethostname.split(/-/).last}#{Random.rand(10_000)}"

  queue_name = "#{@topic_name}.ranger.#{suffix}"

  Peatio::MQ::Client.channel
    .queue(queue_name, durable: false, auto_delete: true)
    .bind(exchange, routing_key: "#").subscribe do |delivery_info, metadata, payload|

    # type@id@event
    # type can be public|private
    # id can be user id or market
    # event can be anything like order_completed or just trade

    routing_key = delivery_info.routing_key
    if routing_key.count(".") != 2
      Peatio::Logger::error do
        "got invalid routing key from amqp: #{routing_key}"
      end

      next
    end

    type, id, event = routing_key.split(".")
    payload_decoded = JSON.parse payload

    if type == "private"
      Client.user(id) do |client|
        if client.streams.include?(event)
          client.send_payload(event => payload_decoded)
        end
      end

      next
    end

    stream = [id, event].join(".")

    Client.all.each do |handler|
      if handler.streams.include?(id) or handler.streams.include?(stream)
        handler.send_payload(stream => payload_decoded)
      end
    end
  end
end