Class: Appsignal::Hooks::ShoryukenMiddleware Private

Inherits:
Object
  • Object
show all
Defined in:
lib/appsignal/hooks/shoryuken.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Instance Method Details

#call(worker_instance, queue, sqs_msg, body) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/hooks/shoryuken.rb', line 7

def call(worker_instance, queue, sqs_msg, body)
  batch = sqs_msg.is_a?(Array)
  attributes =
    if batch
      # We can't instrument batched message separately, the `yield` will
      # perform all the batched messages.
      # To provide somewhat useful metadata, Get first message based on
      # SentTimestamp, and use its attributes as metadata for the
      # transaction. We can't combine them all because then they would
      # overwrite each other and the last message (in an sorted order)
      # would be used as the source of the metadata.  With the
      # oldest/first message at least some useful information is stored
      # such as the first received time and the number of retries for the
      # first message. The newer message should have lower values and
      # timestamps in their metadata.
      first_msg = sqs_msg.min do |a, b|
        a.attributes["SentTimestamp"].to_i <=> b.attributes["SentTimestamp"].to_i
      end
      # Add batch => true metadata so people can recognize when a
      # transaction is about a batch of messages.
      first_msg.attributes.merge(:batch => true)
    else
      sqs_msg.attributes.merge(:message_id => sqs_msg.message_id)
    end
  metadata = { :queue => queue }.merge(attributes)
  options = {
    :class => worker_instance.class.name,
    :method => "perform",
    :metadata => metadata
  }

  args =
    if batch
      bodies = {}
      sqs_msg.each_with_index do |msg, index|
        # Store all separate bodies on a hash with the key being the
        # message_id
        bodies[msg.message_id] = body[index]
      end
      bodies
    else
      case body
      when Hash
        body
      else
        { :params => body }
      end
    end
  options[:params] = Appsignal::Utils::HashSanitizer.sanitize(
    args,
    Appsignal.config[:filter_parameters]
  )

  if attributes.key?("SentTimestamp")
    options[:queue_start] = Time.at(attributes["SentTimestamp"].to_i / 1000)
  end

  Appsignal.monitor_transaction("perform_job.shoryuken", options) do
    yield
  end
end