Method: Fluent::Kafka2Output#configure

Defined in:
lib/fluent/plugin/out_kafka2.rb

#configure(conf) ⇒ Object



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# File 'lib/fluent/plugin/out_kafka2.rb', line 168

def configure(conf)
  super

  if @brokers.size > 0
    @seed_brokers = @brokers
    log.info "brokers has been set: #{@seed_brokers}"
  else
    raise Fluent::ConfigError, 'No brokers specified. Need one broker at least.'
  end

  formatter_conf = conf.elements('format').first
  unless formatter_conf
    raise Fluent::ConfigError, "<format> section is required."
  end
  unless formatter_conf["@type"]
    raise Fluent::ConfigError, "format/@type is required."
  end
  @formatter_proc = setup_formatter(formatter_conf)

  if @default_topic.nil?
    if @use_default_for_unknown_topic
      raise Fluent::ConfigError, "default_topic must be set when use_default_for_unknown_topic is true"
    end
    if @chunk_keys.include?('topic') && !@chunk_key_tag
      log.warn "Use 'topic' field of event record for topic but no fallback. Recommend to set default_topic or set 'tag' in buffer chunk keys like <buffer topic,tag>"
    end
  else
    if @chunk_key_tag
      log.warn "default_topic is set. Fluentd's event tag is not used for topic"
    end
  end

  @producer_opts = {max_retries: @max_send_retries, required_acks: @required_acks, idempotent: @idempotent}
  @producer_opts[:ack_timeout] = @ack_timeout if @ack_timeout
  @producer_opts[:compression_codec] = @compression_codec.to_sym if @compression_codec
  if @active_support_notification_regex
    require 'active_support/notifications'
    require 'active_support/core_ext/hash/keys'
    ActiveSupport::Notifications.subscribe(Regexp.new(@active_support_notification_regex)) do |*args|
      event = ActiveSupport::Notifications::Event.new(*args)
      message = event.payload.respond_to?(:stringify_keys) ? event.payload.stringify_keys : event.payload
      @router.emit("fluent_kafka_stats.#{event.name}", Time.now.to_i, message)
    end
  end

  @topic_key_sym = @topic_key.to_sym

  @headers_from_record_accessors = {}
  @headers_from_record.each do |key, value|
    @headers_from_record_accessors[key] = record_accessor_create(value)
  end

  @exclude_field_accessors = @exclude_fields.map do |field|
    record_accessor_create(field)
  end

  @record_field_accessor = nil
  @record_field_accessor = record_accessor_create(@record_key) unless @record_key.nil?
end