Class: Kafka::FFI::Admin::Result

Inherits:
Array
  • Object
show all
Defined in:
lib/kafka/ffi/admin/result.rb

Instance Method Summary collapse

Constructor Details

#initialize(event) ⇒ Result

Returns a new instance of Result.



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# File 'lib/kafka/ffi/admin/result.rb', line 5

def initialize(event)
  @event = event

  super(get_results(event))
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/kafka/ffi/admin/result.rb', line 55

def destroy
  if @event
    @event.destroy
    @event = nil
  end

  clear

  nil
end

#get_results(event) ⇒ Object 



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# File 'lib/kafka/ffi/admin/result.rb', line 11

def get_results(event)
  count = ::FFI::MemoryPointer.new(:size_t)

  klass, results =
    case event.type
    when :create_topics
      [
        TopicResult,
        ::Kafka::FFI.rd_kafka_CreateTopics_result_topics(event, count),
      ]
    when :delete_topics
      [
        TopicResult,
        ::Kafka::FFI.rd_kafka_DeleteTopics_result_topics(event, count),
      ]
    when :create_partitions
      [
        TopicResult,
        ::Kafka::FFI.rd_kafka_CreateTopics_result_topics(event, count),
      ]
    when :alter_configs
      [
        ConfigResource,
        ::Kafka::FFI.rd_kafka_AlterConfigs_result_resources(event, count),
      ]
    when :describe_configs
      [
        ConfigResource,
        ::Kafka::FFI.rd_kafka_DescribeConfigs_result_resources(event, count),
      ]
    else
      raise ArgumentError, "unable to map #{event.class} to result type"
    end

  if results.null?
    return []
  end

  results = results.read_array_of_pointer(count.read(:size_t))
  results.map! { |p| klass.from_native(p, nil) }
ensure
  count.free
end