Class: Dionysus::Consumer::ParamsBatchProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/dionysus/consumer/params_batch_processor.rb

Instance Method Summary collapse

Constructor Details

#initialize(config, topic) ⇒ ParamsBatchProcessor

Returns a new instance of ParamsBatchProcessor.



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# File 'lib/dionysus/consumer/params_batch_processor.rb', line 7

def initialize(config, topic)
  @config = config
  @topic = topic
end

Instance Method Details

#process(batch, batch_number) ⇒ Object 



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# File 'lib/dionysus/consumer/params_batch_processor.rb', line 12

def process(batch, batch_number)
  processed_events = []
  instrument("dionysus.consume.#{topic}.batch_number_#{batch_number}") do
    payload = batch.payload.to_h
    metadata = batch.metadata
    message = payload["message"].to_a

    with_mutex(metadata, config) do
      message.each do |current_event|
        event_name = current_event["event"]
        data = Array.wrap(current_event["data"])
        model_name = current_event["model_name"]

        transformed_data = nil
        config.instrumenter.instrument("dionysus.consume.#{topic}.batch_number_#{batch_number}.deserialize") do
          transformed_data = Dionysus::Consumer::Deserializer.new(data).deserialize
        end

        if (applicable_message_filter = find_applicable_message_filter(topic, message, transformed_data))
          applicable_message_filter.notify_about_ignored_message(topic: topic, message: message,
            transformed_data: transformed_data)
          next
        end

        dionysus_event = Dionysus::Consumer::DionysusEvent.new(event_name, model_name,
          transformed_data)
        config.instrumenter.instrument("dionysus.consume.#{topic}.batch_number_#{batch_number}.persist",
          dionysus_event.to_h.except(:transformed_data, :local_changes)) do
          config.transaction_provider.connection_pool.with_connection do
            Dionysus::Consumer::Persistor.new(config, topic).persist(dionysus_event,
              batch_number)
          end
        end
        processed_events << dionysus_event
      end
    end
  end
  processed_events
end