Class: Freddy::Producers::SendAndForgetProducer

Inherits:
Object
  • Object
show all
Defined in:
lib/freddy/producers/send_and_forget_producer.rb

Constant Summary collapse

CONTENT_TYPE = 
'application/json'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(channel, logger) ⇒ SendAndForgetProducer

Returns a new instance of SendAndForgetProducer.



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# File 'lib/freddy/producers/send_and_forget_producer.rb', line 6

def initialize(channel, logger)
  @logger = logger
  @exchange = channel.default_exchange
  @topic_exchange = channel.topic Freddy::FREDDY_TOPIC_EXCHANGE_NAME
end

Instance Method Details

#produce(destination, payload, properties) ⇒ Object 



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# File 'lib/freddy/producers/send_and_forget_producer.rb', line 12

def produce(destination, payload, properties)
  span = OpenTracing.start_span("freddy:notify:#{destination}",
    child_of: Freddy.trace,
    tags: {
      'message_bus.destination': destination,
      'component': 'freddy',
      'span.kind': 'producer' # Message Bus
    }
  )
  span.log event: 'Sending message', payload: payload

  properties = properties.merge(
    routing_key: destination,
    content_type: CONTENT_TYPE
  )
  OpenTracing.global_tracer.inject(span.context, OpenTracing::FORMAT_TEXT_MAP, TraceCarrier.new(properties))
  json_payload = Payload.dump(payload)

  # Connection adapters handle thread safety for #publish themselves. No
  # need to lock these.
  @topic_exchange.publish json_payload, properties.dup
  @exchange.publish json_payload, properties.dup
ensure
  # We don't know how many listeners there are and we do not know when
  # this message gets processed. Instead we close the span immediately.
  # Listeners should use FollowsFrom to add trace information.
  # https://github.com/opentracing/specification/blob/master/specification.md
  span.finish
end