lib/klife_protocol/generated/messages/offset_for_leader_epoch.ex

# DO NOT EDIT THIS FILE MANUALLY  
# This module is automatically generated by running mix task generate_file
# every change must be done inside the mix task directly

defmodule KlifeProtocol.Messages.OffsetForLeaderEpoch do
  @moduledoc """
  Kafka protocol OffsetForLeaderEpoch message

  Request versions summary:   
  - Version 1 is the same as version 0.
  - Version 2 adds the current leader epoch to support fencing.
  - Version 3 adds ReplicaId (the default is -2 which conventionally represents a
  "debug" consumer which is allowed to see offsets beyond the high watermark).
  Followers will use this replicaId when using an older version of the protocol.
  - Version 4 enables flexible versions.

  Response versions summary:
  - Version 1 added the leader epoch to the response.
  - Version 2 added the throttle time.
  - Version 3 is the same as version 2.
  - Version 4 enables flexible versions.

  """

  alias KlifeProtocol.Deserializer
  alias KlifeProtocol.Serializer
  alias KlifeProtocol.Header

  @api_key 23
  @min_flexible_version_req 4
  @min_flexible_version_res 4

  @doc """
  Receives a map and serialize it to kafka wire format of the given version.

  Input content fields:
  - replica_id: The broker ID of the follower, of -1 if this request is from a consumer. (int32 | versions 3+)
  - topics: Each topic to get offsets for. ([]OffsetForLeaderTopic | versions 0+)
      - topic: The topic name. (string | versions 0+)
      - partitions: Each partition to get offsets for. ([]OffsetForLeaderPartition | versions 0+)
          - partition: The partition index. (int32 | versions 0+)
          - current_leader_epoch: An epoch used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned. (int32 | versions 2+)
          - leader_epoch: The epoch to look up an offset for. (int32 | versions 0+)

  """
  def serialize_request(%{headers: headers, content: content}, version) do
    headers
    |> Map.put(:request_api_key, @api_key)
    |> Map.put(:request_api_version, version)
    |> Header.serialize_request(req_header_version(version))
    |> then(&Serializer.execute(content, request_schema(version), &1))
  end

  @doc """
  Receive a binary in the kafka wire format and deserialize it into a map.

  Response content fields:

  - throttle_time_ms: The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota. (int32 | versions 2+)
  - topics: Each topic we fetched offsets for. ([]OffsetForLeaderTopicResult | versions 0+)
      - topic: The topic name. (string | versions 0+)
      - partitions: Each partition in the topic we fetched offsets for. ([]EpochEndOffset | versions 0+)
          - error_code: The error code 0, or if there was no error. (int16 | versions 0+)
          - partition: The partition index. (int32 | versions 0+)
          - leader_epoch: The leader epoch of the partition. (int32 | versions 1+)
          - end_offset: The end offset of the epoch. (int64 | versions 0+)

  """
  def deserialize_response(data, version, with_header? \\ true)

  def deserialize_response(data, version, true) do
    {:ok, {headers, rest_data}} = Header.deserialize_response(data, res_header_version(version))

    case Deserializer.execute(rest_data, response_schema(version)) do
      {:ok, {content, <<>>}} ->
        {:ok, %{headers: headers, content: content}}

      {:error, _reason} = err ->
        err
    end
  end

  def deserialize_response(data, version, false) do
    case Deserializer.execute(data, response_schema(version)) do
      {:ok, {content, <<>>}} ->
        {:ok, %{content: content}}

      {:error, _reason} = err ->
        err
    end
  end

  @doc """
  Returns the message api key number.
  """
  def api_key(), do: @api_key

  @doc """
  Returns the current max supported version of this message.
  """
  def max_supported_version(), do: 4

  @doc """
  Returns the current min supported version of this message.
  """
  def min_supported_version(), do: 0

  defp req_header_version(msg_version),
    do: if(msg_version >= @min_flexible_version_req, do: 2, else: 1)

  defp res_header_version(msg_version),
    do: if(msg_version >= @min_flexible_version_res, do: 1, else: 0)

  defp request_schema(0),
    do: [
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp request_schema(1),
    do: [
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp request_schema(2),
    do: [
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  partition: {:int32, %{is_nullable?: false}},
                  current_leader_epoch: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp request_schema(3),
    do: [
      replica_id: {:int32, %{is_nullable?: false}},
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  partition: {:int32, %{is_nullable?: false}},
                  current_leader_epoch: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp request_schema(4),
    do: [
      replica_id: {:int32, %{is_nullable?: false}},
      topics:
        {{:compact_array,
          [
            topic: {:compact_string, %{is_nullable?: false}},
            partitions:
              {{:compact_array,
                [
                  partition: {:int32, %{is_nullable?: false}},
                  current_leader_epoch: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}},
                  tag_buffer: {:tag_buffer, []}
                ]}, %{is_nullable?: false}},
            tag_buffer: {:tag_buffer, []}
          ]}, %{is_nullable?: false}},
      tag_buffer: {:tag_buffer, []}
    ]

  defp request_schema(unkown_version),
    do: raise("Unknown version #{unkown_version} for message OffsetForLeaderEpoch")

  defp response_schema(0),
    do: [
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  error_code: {:int16, %{is_nullable?: false}},
                  partition: {:int32, %{is_nullable?: false}},
                  end_offset: {:int64, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp response_schema(1),
    do: [
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  error_code: {:int16, %{is_nullable?: false}},
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}},
                  end_offset: {:int64, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp response_schema(2),
    do: [
      throttle_time_ms: {:int32, %{is_nullable?: false}},
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  error_code: {:int16, %{is_nullable?: false}},
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}},
                  end_offset: {:int64, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp response_schema(3),
    do: [
      throttle_time_ms: {:int32, %{is_nullable?: false}},
      topics:
        {{:array,
          [
            topic: {:string, %{is_nullable?: false}},
            partitions:
              {{:array,
                [
                  error_code: {:int16, %{is_nullable?: false}},
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}},
                  end_offset: {:int64, %{is_nullable?: false}}
                ]}, %{is_nullable?: false}}
          ]}, %{is_nullable?: false}}
    ]

  defp response_schema(4),
    do: [
      throttle_time_ms: {:int32, %{is_nullable?: false}},
      topics:
        {{:compact_array,
          [
            topic: {:compact_string, %{is_nullable?: false}},
            partitions:
              {{:compact_array,
                [
                  error_code: {:int16, %{is_nullable?: false}},
                  partition: {:int32, %{is_nullable?: false}},
                  leader_epoch: {:int32, %{is_nullable?: false}},
                  end_offset: {:int64, %{is_nullable?: false}},
                  tag_buffer: {:tag_buffer, %{}}
                ]}, %{is_nullable?: false}},
            tag_buffer: {:tag_buffer, %{}}
          ]}, %{is_nullable?: false}},
      tag_buffer: {:tag_buffer, %{}}
    ]

  defp response_schema(unkown_version),
    do: raise("Unknown version #{unkown_version} for message OffsetForLeaderEpoch")
end