Class: Phobos::Actions::ProcessBatch

Inherits:
Object
  • Object
show all
Includes:
Instrumentation
Defined in:
lib/phobos/actions/process_batch.rb

Constant Summary

Constants included from Instrumentation

Instrumentation::NAMESPACE

Instance Method Summary collapse

Methods included from Instrumentation

#instrument, #measure, subscribe, unsubscribe

Constructor Details

#initialize(listener:, batch:, listener_metadata:) ⇒ ProcessBatch

Returns a new instance of ProcessBatch.



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# File 'lib/phobos/actions/process_batch.rb', line 6

def initialize(listener:, batch:, listener_metadata:)
  @listener = listener
  @batch = batch
  @listener_metadata = listener_metadata
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/phobos/actions/process_batch.rb', line 12

def execute
  @batch.messages.each do |message|
    backoff = @listener.create_exponential_backoff
    metadata = @listener_metadata.merge(
      key: message.key,
      partition: message.partition,
      offset: message.offset,
      retry_count: 0
    )

    begin
      instrument('listener.process_message', metadata) do |metadata|
        time_elapsed = measure do
          Phobos::Actions::ProcessMessage.new(
            listener: @listener,
            message: message,
            metadata: metadata,
            encoding: @listener.encoding
          ).execute
        end
        metadata.merge!(time_elapsed: time_elapsed)
      end
    rescue => e
      retry_count = metadata[:retry_count]
      interval = backoff.interval_at(retry_count).round(2)

      error = {
        waiting_time: interval,
        exception_class: e.class.name,
        exception_message: e.message,
        backtrace: e.backtrace
      }

      instrument('listener.retry_handler_error', error.merge(metadata)) do
        Phobos.logger.error do
          { message: "error processing message, waiting #{interval}s" }.merge(error).merge(metadata)
        end

        sleep interval
        metadata.merge!(retry_count: retry_count + 1)
      end

      raise Phobos::AbortError if @listener.should_stop?
      retry
    end
  end
end