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Size: 1.46 KB

Versions: 33

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Stored size: 1.46 KB

Contents

module Kafka
  module Protocol

    # A request to fetch messages from a given partition.
    #
    # ## API Specification
    #
    #     FetchRequest => ReplicaId MaxWaitTime MinBytes [TopicName [Partition FetchOffset MaxBytes]]
    #       ReplicaId => int32
    #       MaxWaitTime => int32
    #       MinBytes => int32
    #       TopicName => string
    #       Partition => int32
    #       FetchOffset => int64
    #       MaxBytes => int32
    #
    class FetchRequest

      # @param max_wait_time [Integer]
      # @param min_bytes [Integer]
      # @param topics [Hash]
      def initialize(max_wait_time:, min_bytes:, topics:)
        @replica_id = REPLICA_ID
        @max_wait_time = max_wait_time
        @min_bytes = min_bytes
        @topics = topics
      end

      def api_key
        1
      end

      def response_class
        Protocol::FetchResponse
      end

      def encode(encoder)
        encoder.write_int32(@replica_id)
        encoder.write_int32(@max_wait_time)
        encoder.write_int32(@min_bytes)

        encoder.write_array(@topics) do |topic, partitions|
          encoder.write_string(topic)

          encoder.write_array(partitions) do |partition, config|
            fetch_offset = config.fetch(:fetch_offset)
            max_bytes = config.fetch(:max_bytes)

            encoder.write_int32(partition)
            encoder.write_int64(fetch_offset)
            encoder.write_int32(max_bytes)
          end
        end
      end
    end
  end
end

Version data entries

33 entries across 33 versions & 1 rubygems

Version Path
ruby-kafka-0.4.0.beta1 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.18.beta2 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.18.beta1 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.17 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.16 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.16.beta2 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.16.beta1 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.15 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.15.beta3 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.15.beta2 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.15.beta1 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.14 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.13.beta4 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.13.beta3 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.13.beta2 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.13.beta1 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.12 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.11 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.10 lib/kafka/protocol/fetch_request.rb
ruby-kafka-0.3.9 lib/kafka/protocol/fetch_request.rb