Module: Plog::Packets::MultipartMessage

Defined in:
lib/plog/packets/multipart_message.rb

Class Method Summary collapse

Class Method Details

.encode(message_id, length, checksum, chunk_size, count, index, payload, options = {}) ⇒ Object 



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# File 'lib/plog/packets/multipart_message.rb', line 5

def self.encode(message_id, length, checksum, chunk_size, count, index, payload, options = {})
  message = [
      PROTOCOL_VERSION,
      TYPE_MULTIPART_MESSAGE,
      count,
      index,
      chunk_size,
      message_id,
      length,
      checksum]

  # Plog encoding: https://github.com/airbnb/plog
  template = 'CCS>S>S>L>l>L>S>x2'

  # Generate pack template for tags
  tags = options[:tags]
  if tags.nil? || tags.empty?
    message << 0
  else
    tag_len = 0
    tags.each do |tag|
      len = tag.length + 1 # extra byte for '\0'
      template += "a#{len}"
      tag_len += len
    end
    message << tag_len
    message.concat(tags)
  end

  message << payload
  template += 'a*'

  return message.pack(template)
end